/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o200.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:30:21,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:30:21,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:30:21,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:30:21,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:30:21,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:30:21,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:30:21,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:30:21,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:30:21,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:30:21,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:30:21,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:30:21,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:30:21,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:30:21,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:30:21,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:30:21,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:30:21,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:30:21,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:30:21,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:30:21,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:30:21,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:30:21,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:30:21,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:30:21,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:30:21,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:30:21,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:30:21,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:30:21,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:30:21,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:30:21,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:30:21,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:30:21,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:30:21,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:30:21,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:30:21,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:30:21,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:30:21,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:30:21,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:30:21,230 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:30:21,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:30:21,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:30:21,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:30:21,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:30:21,231 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:30:21,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:30:21,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:30:21,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:30:21,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:30:21,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:30:21,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:30:21,232 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:30:21,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:30:21,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:30:21,699 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:30:21,701 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:30:21,702 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:30:21,703 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-04 16:30:21,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98264ca4/1ff78ee4cf22420e956d5b2223e317ea/FLAG1d3e57050 [2020-09-04 16:30:22,332 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:30:22,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o200.c [2020-09-04 16:30:22,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98264ca4/1ff78ee4cf22420e956d5b2223e317ea/FLAG1d3e57050 [2020-09-04 16:30:22,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98264ca4/1ff78ee4cf22420e956d5b2223e317ea [2020-09-04 16:30:22,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:30:22,711 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:30:22,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:30:22,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:30:22,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:30:22,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:30:22" (1/1) ... [2020-09-04 16:30:22,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424943e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:22, skipping insertion in model container [2020-09-04 16:30:22,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:30:22" (1/1) ... [2020-09-04 16:30:22,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:30:22,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:30:22,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:30:22,968 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:30:22,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:30:23,000 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:30:23,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:23 WrapperNode [2020-09-04 16:30:23,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:30:23,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:30:23,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:30:23,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:30:23,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:23" (1/1) ... [2020-09-04 16:30:23,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:23" (1/1) ... [2020-09-04 16:30:23,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:23" (1/1) ... [2020-09-04 16:30:23,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:23" (1/1) ... [2020-09-04 16:30:23,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:23" (1/1) ... [2020-09-04 16:30:23,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:23" (1/1) ... [2020-09-04 16:30:23,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:23" (1/1) ... [2020-09-04 16:30:23,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:30:23,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:30:23,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:30:23,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:30:23,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:23" (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 [2020-09-04 16:30:23,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:30:23,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:30:23,211 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-04 16:30:23,211 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:30:23,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 16:30:23,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:30:23,211 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-04 16:30:23,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:30:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:30:23,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:30:23,398 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:30:23,398 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:30:23,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:30:23 BoogieIcfgContainer [2020-09-04 16:30:23,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:30:23,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:30:23,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:30:23,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:30:23,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:30:22" (1/3) ... [2020-09-04 16:30:23,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e148e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:30:23, skipping insertion in model container [2020-09-04 16:30:23,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:30:23" (2/3) ... [2020-09-04 16:30:23,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e148e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:30:23, skipping insertion in model container [2020-09-04 16:30:23,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:30:23" (3/3) ... [2020-09-04 16:30:23,414 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o200.c [2020-09-04 16:30:23,426 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:30:23,438 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:30:23,461 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:30:23,490 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:30:23,491 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:30:23,491 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:30:23,491 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:30:23,491 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:30:23,491 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:30:23,492 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:30:23,492 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:30:23,509 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-04 16:30:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 16:30:23,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:23,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:23,522 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:23,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:23,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-04 16:30:23,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:23,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891745420] [2020-09-04 16:30:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:23,614 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:23,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:23,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:30:23,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891745420] [2020-09-04 16:30:23,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:23,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:30:23,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700556206] [2020-09-04 16:30:23,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:30:23,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:23,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:30:23,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:30:23,926 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-04 16:30:24,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:24,021 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-04 16:30:24,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:30:24,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-04 16:30:24,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:24,038 INFO L225 Difference]: With dead ends: 37 [2020-09-04 16:30:24,038 INFO L226 Difference]: Without dead ends: 22 [2020-09-04 16:30:24,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:30:24,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-04 16:30:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-04 16:30:24,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-04 16:30:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-04 16:30:24,102 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-04 16:30:24,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:24,103 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-04 16:30:24,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:30:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-04 16:30:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-04 16:30:24,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:24,106 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:24,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:30:24,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:24,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:24,107 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-04 16:30:24,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:24,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735066531] [2020-09-04 16:30:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:24,110 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:24,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:24,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:24,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 16:30:24,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735066531] [2020-09-04 16:30:24,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:24,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:30:24,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074868165] [2020-09-04 16:30:24,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:30:24,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:24,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:30:24,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:30:24,379 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-04 16:30:24,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:24,499 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-04 16:30:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 16:30:24,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-04 16:30:24,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:24,503 INFO L225 Difference]: With dead ends: 31 [2020-09-04 16:30:24,504 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 16:30:24,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 16:30:24,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 16:30:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-04 16:30:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 16:30:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-04 16:30:24,527 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-04 16:30:24,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:24,528 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-04 16:30:24,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:30:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-04 16:30:24,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 16:30:24,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:24,530 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:24,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:30:24,532 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:24,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:24,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-04 16:30:24,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:24,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972615359] [2020-09-04 16:30:24,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:24,540 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:24,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:24,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:24,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:24,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 16:30:24,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972615359] [2020-09-04 16:30:24,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:24,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 16:30:24,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214648077] [2020-09-04 16:30:24,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 16:30:24,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:24,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 16:30:24,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-04 16:30:24,775 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-04 16:30:24,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:24,903 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-04 16:30:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 16:30:24,904 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-04 16:30:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:24,905 INFO L225 Difference]: With dead ends: 35 [2020-09-04 16:30:24,905 INFO L226 Difference]: Without dead ends: 30 [2020-09-04 16:30:24,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-04 16:30:24,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-04 16:30:24,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-04 16:30:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-04 16:30:24,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-04 16:30:24,916 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-04 16:30:24,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:24,916 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-04 16:30:24,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 16:30:24,916 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-04 16:30:24,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 16:30:24,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:24,918 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:24,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:30:24,919 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:24,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:24,919 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-04 16:30:24,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:24,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388576330] [2020-09-04 16:30:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:24,922 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-04 16:30:25,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388576330] [2020-09-04 16:30:25,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:25,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 16:30:25,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260906566] [2020-09-04 16:30:25,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 16:30:25,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:25,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 16:30:25,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:30:25,235 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-04 16:30:25,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:25,371 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-04 16:30:25,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 16:30:25,371 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-04 16:30:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:25,373 INFO L225 Difference]: With dead ends: 39 [2020-09-04 16:30:25,373 INFO L226 Difference]: Without dead ends: 34 [2020-09-04 16:30:25,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-04 16:30:25,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-04 16:30:25,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-04 16:30:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-04 16:30:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-04 16:30:25,383 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-04 16:30:25,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:25,384 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-04 16:30:25,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 16:30:25,384 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-04 16:30:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-04 16:30:25,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:25,386 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:25,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:30:25,386 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:25,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:25,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-04 16:30:25,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:25,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158316755] [2020-09-04 16:30:25,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:25,390 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,697 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-04 16:30:25,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158316755] [2020-09-04 16:30:25,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:25,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 16:30:25,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31288710] [2020-09-04 16:30:25,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 16:30:25,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:25,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 16:30:25,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-04 16:30:25,701 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-04 16:30:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:25,889 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-04 16:30:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 16:30:25,890 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-04 16:30:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:25,891 INFO L225 Difference]: With dead ends: 43 [2020-09-04 16:30:25,892 INFO L226 Difference]: Without dead ends: 38 [2020-09-04 16:30:25,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-04 16:30:25,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-04 16:30:25,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-04 16:30:25,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-04 16:30:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-04 16:30:25,902 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-04 16:30:25,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:25,903 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-04 16:30:25,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 16:30:25,903 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-04 16:30:25,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-04 16:30:25,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:25,905 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:25,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:30:25,906 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:25,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:25,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-04 16:30:25,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:25,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111044771] [2020-09-04 16:30:25,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:25,909 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:25,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-04 16:30:26,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111044771] [2020-09-04 16:30:26,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:26,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 16:30:26,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040368253] [2020-09-04 16:30:26,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 16:30:26,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:26,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 16:30:26,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-04 16:30:26,321 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-04 16:30:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:26,581 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-04 16:30:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 16:30:26,582 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-04 16:30:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:26,585 INFO L225 Difference]: With dead ends: 47 [2020-09-04 16:30:26,585 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 16:30:26,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-04 16:30:26,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 16:30:26,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-04 16:30:26,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-04 16:30:26,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-04 16:30:26,605 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-04 16:30:26,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:26,606 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-04 16:30:26,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 16:30:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-04 16:30:26,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-04 16:30:26,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:26,610 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:26,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:30:26,610 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:26,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:26,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-04 16:30:26,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:26,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732112462] [2020-09-04 16:30:26,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:26,617 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:26,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-04 16:30:27,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732112462] [2020-09-04 16:30:27,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:27,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-04 16:30:27,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17986798] [2020-09-04 16:30:27,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 16:30:27,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:27,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 16:30:27,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-04 16:30:27,171 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-04 16:30:27,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:27,489 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-04 16:30:27,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 16:30:27,490 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-04 16:30:27,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:27,493 INFO L225 Difference]: With dead ends: 51 [2020-09-04 16:30:27,494 INFO L226 Difference]: Without dead ends: 46 [2020-09-04 16:30:27,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-04 16:30:27,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-04 16:30:27,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-04 16:30:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-04 16:30:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-04 16:30:27,510 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-04 16:30:27,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:27,512 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-04 16:30:27,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 16:30:27,513 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-04 16:30:27,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-04 16:30:27,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:27,518 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:27,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 16:30:27,520 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:27,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:27,520 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-04 16:30:27,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:27,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106599364] [2020-09-04 16:30:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:27,524 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:27,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-04 16:30:28,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106599364] [2020-09-04 16:30:28,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:28,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-09-04 16:30:28,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329324339] [2020-09-04 16:30:28,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 16:30:28,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:28,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 16:30:28,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-04 16:30:28,022 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-04 16:30:28,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:28,359 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-04 16:30:28,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 16:30:28,360 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-04 16:30:28,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:28,361 INFO L225 Difference]: With dead ends: 55 [2020-09-04 16:30:28,361 INFO L226 Difference]: Without dead ends: 50 [2020-09-04 16:30:28,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-04 16:30:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-04 16:30:28,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-04 16:30:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-04 16:30:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-04 16:30:28,371 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-04 16:30:28,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:28,372 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-04 16:30:28,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 16:30:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-04 16:30:28,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-04 16:30:28,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:28,373 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:28,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 16:30:28,374 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:28,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:28,374 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-04 16:30:28,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:28,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775800772] [2020-09-04 16:30:28,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:28,379 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-04 16:30:28,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775800772] [2020-09-04 16:30:28,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:28,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-09-04 16:30:28,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042883995] [2020-09-04 16:30:28,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-04 16:30:28,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:28,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-04 16:30:28,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-04 16:30:28,985 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-04 16:30:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:29,432 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-04 16:30:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-04 16:30:29,432 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-04 16:30:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:29,434 INFO L225 Difference]: With dead ends: 59 [2020-09-04 16:30:29,434 INFO L226 Difference]: Without dead ends: 54 [2020-09-04 16:30:29,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-04 16:30:29,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-04 16:30:29,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-04 16:30:29,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-04 16:30:29,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-04 16:30:29,443 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-04 16:30:29,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:29,443 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-04 16:30:29,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-04 16:30:29,444 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-04 16:30:29,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-04 16:30:29,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:29,445 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:29,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 16:30:29,445 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:29,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:29,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-04 16:30:29,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:29,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118479667] [2020-09-04 16:30:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:29,448 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:29,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:29,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:29,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:29,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:29,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:29,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:29,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:29,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:29,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-04 16:30:30,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118479667] [2020-09-04 16:30:30,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:30,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-09-04 16:30:30,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122926460] [2020-09-04 16:30:30,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 16:30:30,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:30,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 16:30:30,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-04 16:30:30,121 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-04 16:30:30,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:30,629 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-04 16:30:30,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-04 16:30:30,630 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-04 16:30:30,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:30,631 INFO L225 Difference]: With dead ends: 63 [2020-09-04 16:30:30,631 INFO L226 Difference]: Without dead ends: 58 [2020-09-04 16:30:30,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 16:30:30,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-04 16:30:30,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-04 16:30:30,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-04 16:30:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-04 16:30:30,641 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-04 16:30:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:30,642 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-04 16:30:30,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 16:30:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-04 16:30:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-04 16:30:30,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:30,643 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:30,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 16:30:30,644 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:30,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:30,644 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-04 16:30:30,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:30,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146954576] [2020-09-04 16:30:30,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:30,647 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:30,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-04 16:30:31,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146954576] [2020-09-04 16:30:31,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:31,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-09-04 16:30:31,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590859957] [2020-09-04 16:30:31,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-04 16:30:31,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:31,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-04 16:30:31,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-04 16:30:31,457 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-04 16:30:32,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:32,116 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-04 16:30:32,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 16:30:32,116 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-04 16:30:32,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:32,118 INFO L225 Difference]: With dead ends: 67 [2020-09-04 16:30:32,118 INFO L226 Difference]: Without dead ends: 62 [2020-09-04 16:30:32,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 16:30:32,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-04 16:30:32,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-04 16:30:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-04 16:30:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-04 16:30:32,127 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-04 16:30:32,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:32,128 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-04 16:30:32,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-04 16:30:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-04 16:30:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-04 16:30:32,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:32,129 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:32,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 16:30:32,130 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:32,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:32,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-04 16:30:32,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:32,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887282948] [2020-09-04 16:30:32,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:32,132 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:32,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-04 16:30:33,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887282948] [2020-09-04 16:30:33,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:33,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-09-04 16:30:33,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938107968] [2020-09-04 16:30:33,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-04 16:30:33,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:33,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-04 16:30:33,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-04 16:30:33,060 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-04 16:30:33,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:33,872 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-04 16:30:33,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-04 16:30:33,872 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-04 16:30:33,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:33,873 INFO L225 Difference]: With dead ends: 71 [2020-09-04 16:30:33,874 INFO L226 Difference]: Without dead ends: 66 [2020-09-04 16:30:33,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 16:30:33,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-04 16:30:33,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-04 16:30:33,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-04 16:30:33,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-04 16:30:33,883 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-04 16:30:33,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:33,883 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-04 16:30:33,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-04 16:30:33,884 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-04 16:30:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-04 16:30:33,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:33,885 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:33,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 16:30:33,885 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:33,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:33,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-04 16:30:33,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:33,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645680994] [2020-09-04 16:30:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:33,888 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:33,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:33,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:34,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:35,100 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-04 16:30:35,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645680994] [2020-09-04 16:30:35,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:35,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2020-09-04 16:30:35,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901981549] [2020-09-04 16:30:35,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-04 16:30:35,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:35,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-04 16:30:35,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-04 16:30:35,104 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-04 16:30:35,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:35,956 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-04 16:30:35,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-04 16:30:35,956 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-04 16:30:35,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:35,957 INFO L225 Difference]: With dead ends: 75 [2020-09-04 16:30:35,958 INFO L226 Difference]: Without dead ends: 70 [2020-09-04 16:30:35,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 16:30:35,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-04 16:30:35,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-04 16:30:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-04 16:30:35,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-04 16:30:35,981 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-04 16:30:35,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:35,981 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-04 16:30:35,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-04 16:30:35,982 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-04 16:30:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-04 16:30:35,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:35,983 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:35,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 16:30:35,983 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:35,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:35,986 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-04 16:30:35,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:35,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694474312] [2020-09-04 16:30:35,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:35,990 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:36,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:37,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-04 16:30:37,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694474312] [2020-09-04 16:30:37,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:37,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-09-04 16:30:37,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898487782] [2020-09-04 16:30:37,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-04 16:30:37,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:37,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-04 16:30:37,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-04 16:30:37,156 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-04 16:30:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:38,181 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-04 16:30:38,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-04 16:30:38,182 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-04 16:30:38,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:38,184 INFO L225 Difference]: With dead ends: 79 [2020-09-04 16:30:38,184 INFO L226 Difference]: Without dead ends: 74 [2020-09-04 16:30:38,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 16:30:38,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-04 16:30:38,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-04 16:30:38,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-04 16:30:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-04 16:30:38,194 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-04 16:30:38,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:38,195 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-04 16:30:38,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-04 16:30:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-04 16:30:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-04 16:30:38,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:38,196 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:38,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 16:30:38,197 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:38,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:38,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-04 16:30:38,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:38,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581817590] [2020-09-04 16:30:38,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:38,199 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:38,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:39,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:39,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:39,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:39,505 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-09-04 16:30:39,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581817590] [2020-09-04 16:30:39,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:39,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-09-04 16:30:39,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671920728] [2020-09-04 16:30:39,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-04 16:30:39,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:39,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-04 16:30:39,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 16:30:39,508 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 33 states. [2020-09-04 16:30:40,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:40,707 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2020-09-04 16:30:40,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-09-04 16:30:40,707 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 114 [2020-09-04 16:30:40,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:40,709 INFO L225 Difference]: With dead ends: 83 [2020-09-04 16:30:40,709 INFO L226 Difference]: Without dead ends: 78 [2020-09-04 16:30:40,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=2133, Unknown=0, NotChecked=0, Total=2256 [2020-09-04 16:30:40,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-04 16:30:40,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-04 16:30:40,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-04 16:30:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-04 16:30:40,719 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 114 [2020-09-04 16:30:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:40,719 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-04 16:30:40,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-04 16:30:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-04 16:30:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-04 16:30:40,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:40,721 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:40,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 16:30:40,722 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:40,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:40,722 INFO L82 PathProgramCache]: Analyzing trace with hash -751861855, now seen corresponding path program 15 times [2020-09-04 16:30:40,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:40,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10265634] [2020-09-04 16:30:40,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:40,724 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:40,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:40,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:41,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-09-04 16:30:42,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10265634] [2020-09-04 16:30:42,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:42,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-09-04 16:30:42,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490590575] [2020-09-04 16:30:42,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-04 16:30:42,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:42,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-04 16:30:42,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 16:30:42,563 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 35 states. [2020-09-04 16:30:43,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:43,829 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2020-09-04 16:30:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-04 16:30:43,830 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 121 [2020-09-04 16:30:43,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:43,831 INFO L225 Difference]: With dead ends: 87 [2020-09-04 16:30:43,831 INFO L226 Difference]: Without dead ends: 82 [2020-09-04 16:30:43,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=131, Invalid=2419, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 16:30:43,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-04 16:30:43,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-09-04 16:30:43,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-04 16:30:43,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-09-04 16:30:43,840 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 121 [2020-09-04 16:30:43,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:43,841 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-09-04 16:30:43,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-04 16:30:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-09-04 16:30:43,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-04 16:30:43,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:43,843 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:43,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 16:30:43,843 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:43,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:43,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2017083634, now seen corresponding path program 16 times [2020-09-04 16:30:43,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:43,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262919803] [2020-09-04 16:30:43,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:43,846 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:43,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:43,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:43,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:44,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:44,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:44,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:44,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:44,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:44,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:44,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:45,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:45,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:45,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:45,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:45,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-09-04 16:30:45,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262919803] [2020-09-04 16:30:45,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:45,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2020-09-04 16:30:45,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881353485] [2020-09-04 16:30:45,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-09-04 16:30:45,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:45,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-09-04 16:30:45,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 16:30:45,613 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 37 states. [2020-09-04 16:30:47,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:47,144 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2020-09-04 16:30:47,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-09-04 16:30:47,144 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 128 [2020-09-04 16:30:47,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:47,146 INFO L225 Difference]: With dead ends: 91 [2020-09-04 16:30:47,146 INFO L226 Difference]: Without dead ends: 86 [2020-09-04 16:30:47,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=139, Invalid=2723, Unknown=0, NotChecked=0, Total=2862 [2020-09-04 16:30:47,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-04 16:30:47,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-09-04 16:30:47,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-04 16:30:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2020-09-04 16:30:47,157 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 128 [2020-09-04 16:30:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:47,157 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2020-09-04 16:30:47,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-09-04 16:30:47,160 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2020-09-04 16:30:47,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-04 16:30:47,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:47,162 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:47,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 16:30:47,164 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:47,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:47,164 INFO L82 PathProgramCache]: Analyzing trace with hash -750736845, now seen corresponding path program 17 times [2020-09-04 16:30:47,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:47,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704068813] [2020-09-04 16:30:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:47,167 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:47,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:48,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:48,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:48,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:48,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:48,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:48,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:48,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:48,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-09-04 16:30:48,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704068813] [2020-09-04 16:30:48,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:48,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-09-04 16:30:48,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756061875] [2020-09-04 16:30:48,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 16:30:48,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:48,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 16:30:48,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 16:30:48,922 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 39 states. [2020-09-04 16:30:50,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:50,630 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2020-09-04 16:30:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-09-04 16:30:50,631 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 135 [2020-09-04 16:30:50,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:50,633 INFO L225 Difference]: With dead ends: 95 [2020-09-04 16:30:50,633 INFO L226 Difference]: Without dead ends: 90 [2020-09-04 16:30:50,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=147, Invalid=3045, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 16:30:50,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-04 16:30:50,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-09-04 16:30:50,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-04 16:30:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2020-09-04 16:30:50,642 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 135 [2020-09-04 16:30:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:50,643 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2020-09-04 16:30:50,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 16:30:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2020-09-04 16:30:50,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 16:30:50,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:50,644 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:50,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 16:30:50,645 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:50,645 INFO L82 PathProgramCache]: Analyzing trace with hash 112489604, now seen corresponding path program 18 times [2020-09-04 16:30:50,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:50,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045181563] [2020-09-04 16:30:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:50,647 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:50,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:50,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:50,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:50,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:52,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:52,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:52,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:52,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-09-04 16:30:52,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045181563] [2020-09-04 16:30:52,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:52,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2020-09-04 16:30:52,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391244236] [2020-09-04 16:30:52,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-09-04 16:30:52,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:52,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-09-04 16:30:52,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 16:30:52,663 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 41 states. [2020-09-04 16:30:54,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:54,542 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2020-09-04 16:30:54,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-09-04 16:30:54,545 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 142 [2020-09-04 16:30:54,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:54,546 INFO L225 Difference]: With dead ends: 99 [2020-09-04 16:30:54,546 INFO L226 Difference]: Without dead ends: 94 [2020-09-04 16:30:54,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=155, Invalid=3385, Unknown=0, NotChecked=0, Total=3540 [2020-09-04 16:30:54,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-04 16:30:54,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-09-04 16:30:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-04 16:30:54,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-09-04 16:30:54,556 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 142 [2020-09-04 16:30:54,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:54,556 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-09-04 16:30:54,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-09-04 16:30:54,556 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-09-04 16:30:54,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-04 16:30:54,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:54,558 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:54,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 16:30:54,559 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:54,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:54,559 INFO L82 PathProgramCache]: Analyzing trace with hash 374596293, now seen corresponding path program 19 times [2020-09-04 16:30:54,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:54,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846635496] [2020-09-04 16:30:54,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:54,561 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:54,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:54,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:54,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:54,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:54,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:55,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:55,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:55,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:55,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:55,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:55,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:55,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:55,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:55,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:56,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:56,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:56,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:56,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:56,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-09-04 16:30:56,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846635496] [2020-09-04 16:30:56,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:30:56,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2020-09-04 16:30:56,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452776043] [2020-09-04 16:30:56,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-09-04 16:30:56,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:30:56,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-09-04 16:30:56,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 16:30:56,755 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 43 states. [2020-09-04 16:30:58,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:30:58,824 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2020-09-04 16:30:58,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-09-04 16:30:58,825 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 149 [2020-09-04 16:30:58,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:30:58,827 INFO L225 Difference]: With dead ends: 103 [2020-09-04 16:30:58,827 INFO L226 Difference]: Without dead ends: 98 [2020-09-04 16:30:58,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=163, Invalid=3743, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 16:30:58,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-04 16:30:58,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-04 16:30:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-04 16:30:58,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2020-09-04 16:30:58,841 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 149 [2020-09-04 16:30:58,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:30:58,842 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2020-09-04 16:30:58,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-09-04 16:30:58,842 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2020-09-04 16:30:58,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 16:30:58,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:30:58,844 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:30:58,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 16:30:58,845 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:30:58,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:30:58,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1900661226, now seen corresponding path program 20 times [2020-09-04 16:30:58,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:30:58,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884886957] [2020-09-04 16:30:58,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:30:58,847 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:30:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:58,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:30:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:58,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:30:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:30:59,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:30:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:00,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:00,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:00,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:00,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:00,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:00,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:00,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:00,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:01,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-09-04 16:31:01,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884886957] [2020-09-04 16:31:01,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:01,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2020-09-04 16:31:01,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635786692] [2020-09-04 16:31:01,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-04 16:31:01,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:01,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-04 16:31:01,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 16:31:01,277 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 45 states. [2020-09-04 16:31:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:03,523 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2020-09-04 16:31:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-09-04 16:31:03,523 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 156 [2020-09-04 16:31:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:03,525 INFO L225 Difference]: With dead ends: 107 [2020-09-04 16:31:03,525 INFO L226 Difference]: Without dead ends: 102 [2020-09-04 16:31:03,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=171, Invalid=4119, Unknown=0, NotChecked=0, Total=4290 [2020-09-04 16:31:03,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-04 16:31:03,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-04 16:31:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-04 16:31:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2020-09-04 16:31:03,535 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 156 [2020-09-04 16:31:03,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:03,536 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2020-09-04 16:31:03,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-04 16:31:03,536 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2020-09-04 16:31:03,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 16:31:03,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:03,538 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:31:03,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 16:31:03,539 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:03,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:03,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1591006889, now seen corresponding path program 21 times [2020-09-04 16:31:03,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:03,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771849191] [2020-09-04 16:31:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:03,541 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:03,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:04,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:05,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:05,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:05,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:05,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:05,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:05,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:05,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-09-04 16:31:06,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771849191] [2020-09-04 16:31:06,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:06,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2020-09-04 16:31:06,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633356057] [2020-09-04 16:31:06,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-09-04 16:31:06,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:06,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-09-04 16:31:06,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2020-09-04 16:31:06,169 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 47 states. [2020-09-04 16:31:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:08,652 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2020-09-04 16:31:08,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-09-04 16:31:08,654 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 163 [2020-09-04 16:31:08,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:08,655 INFO L225 Difference]: With dead ends: 111 [2020-09-04 16:31:08,655 INFO L226 Difference]: Without dead ends: 106 [2020-09-04 16:31:08,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=179, Invalid=4513, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 16:31:08,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-04 16:31:08,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-09-04 16:31:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-04 16:31:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-09-04 16:31:08,665 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 163 [2020-09-04 16:31:08,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:08,666 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-09-04 16:31:08,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-09-04 16:31:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-09-04 16:31:08,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-04 16:31:08,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:08,668 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:31:08,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 16:31:08,668 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:08,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:08,669 INFO L82 PathProgramCache]: Analyzing trace with hash 2196904, now seen corresponding path program 22 times [2020-09-04 16:31:08,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:08,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351448992] [2020-09-04 16:31:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:08,670 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:08,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:08,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:08,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:08,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:09,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:10,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:11,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:11,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-09-04 16:31:11,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351448992] [2020-09-04 16:31:11,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:11,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2020-09-04 16:31:11,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494490095] [2020-09-04 16:31:11,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-09-04 16:31:11,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:11,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-09-04 16:31:11,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2020-09-04 16:31:11,506 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 49 states. [2020-09-04 16:31:14,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:14,276 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2020-09-04 16:31:14,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-09-04 16:31:14,277 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 170 [2020-09-04 16:31:14,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:14,279 INFO L225 Difference]: With dead ends: 115 [2020-09-04 16:31:14,279 INFO L226 Difference]: Without dead ends: 110 [2020-09-04 16:31:14,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=187, Invalid=4925, Unknown=0, NotChecked=0, Total=5112 [2020-09-04 16:31:14,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-04 16:31:14,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-04 16:31:14,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-04 16:31:14,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2020-09-04 16:31:14,290 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 170 [2020-09-04 16:31:14,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:14,290 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2020-09-04 16:31:14,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-09-04 16:31:14,290 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2020-09-04 16:31:14,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 16:31:14,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:14,292 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:31:14,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 16:31:14,292 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:14,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:14,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1568113175, now seen corresponding path program 23 times [2020-09-04 16:31:14,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:14,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668227602] [2020-09-04 16:31:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:14,294 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:14,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:14,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:14,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:14,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:14,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:14,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:14,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:15,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:16,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:17,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-09-04 16:31:17,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668227602] [2020-09-04 16:31:17,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:17,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2020-09-04 16:31:17,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148372633] [2020-09-04 16:31:17,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-09-04 16:31:17,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:17,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-09-04 16:31:17,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 16:31:17,397 INFO L87 Difference]: Start difference. First operand 110 states and 111 transitions. Second operand 51 states. [2020-09-04 16:31:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:20,393 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2020-09-04 16:31:20,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-09-04 16:31:20,394 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 177 [2020-09-04 16:31:20,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:20,396 INFO L225 Difference]: With dead ends: 119 [2020-09-04 16:31:20,396 INFO L226 Difference]: Without dead ends: 114 [2020-09-04 16:31:20,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=195, Invalid=5355, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 16:31:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-04 16:31:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-09-04 16:31:20,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-04 16:31:20,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2020-09-04 16:31:20,407 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 177 [2020-09-04 16:31:20,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:20,407 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2020-09-04 16:31:20,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-09-04 16:31:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2020-09-04 16:31:20,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-04 16:31:20,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:20,409 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:31:20,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 16:31:20,409 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:20,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:20,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1126669510, now seen corresponding path program 24 times [2020-09-04 16:31:20,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:20,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911524996] [2020-09-04 16:31:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:20,411 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:20,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:20,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:20,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:20,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:20,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:20,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:20,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:21,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:21,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:21,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:21,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:21,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:21,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:21,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:22,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:23,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:23,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:23,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-09-04 16:31:23,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911524996] [2020-09-04 16:31:23,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:23,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2020-09-04 16:31:23,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831387701] [2020-09-04 16:31:23,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-09-04 16:31:23,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:23,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-09-04 16:31:23,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 16:31:23,785 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 53 states. [2020-09-04 16:31:27,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:27,076 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2020-09-04 16:31:27,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-09-04 16:31:27,077 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 184 [2020-09-04 16:31:27,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:27,079 INFO L225 Difference]: With dead ends: 123 [2020-09-04 16:31:27,079 INFO L226 Difference]: Without dead ends: 118 [2020-09-04 16:31:27,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=203, Invalid=5803, Unknown=0, NotChecked=0, Total=6006 [2020-09-04 16:31:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-04 16:31:27,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-09-04 16:31:27,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-04 16:31:27,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-09-04 16:31:27,089 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 184 [2020-09-04 16:31:27,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:27,089 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-09-04 16:31:27,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-09-04 16:31:27,089 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-09-04 16:31:27,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-04 16:31:27,091 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:27,091 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:31:27,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 16:31:27,091 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:27,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:27,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1932386427, now seen corresponding path program 25 times [2020-09-04 16:31:27,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:27,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020939477] [2020-09-04 16:31:27,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:27,094 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:27,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:27,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:27,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:27,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:27,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:27,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:27,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:27,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:28,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:28,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:28,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:28,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:28,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:28,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:28,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:29,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:29,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:29,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:29,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:29,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:29,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:30,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:30,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:30,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-09-04 16:31:30,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020939477] [2020-09-04 16:31:30,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:30,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2020-09-04 16:31:30,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459881785] [2020-09-04 16:31:30,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-09-04 16:31:30,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:30,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-09-04 16:31:30,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 16:31:30,747 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 55 states. [2020-09-04 16:31:34,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:34,257 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2020-09-04 16:31:34,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-09-04 16:31:34,258 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 191 [2020-09-04 16:31:34,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:34,259 INFO L225 Difference]: With dead ends: 127 [2020-09-04 16:31:34,259 INFO L226 Difference]: Without dead ends: 122 [2020-09-04 16:31:34,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=211, Invalid=6269, Unknown=0, NotChecked=0, Total=6480 [2020-09-04 16:31:34,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-04 16:31:34,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-09-04 16:31:34,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-04 16:31:34,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2020-09-04 16:31:34,269 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 191 [2020-09-04 16:31:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:34,270 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2020-09-04 16:31:34,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-09-04 16:31:34,270 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2020-09-04 16:31:34,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-04 16:31:34,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:34,271 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:31:34,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 16:31:34,272 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:34,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:34,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1732456756, now seen corresponding path program 26 times [2020-09-04 16:31:34,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:34,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953110639] [2020-09-04 16:31:34,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:34,274 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:34,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:34,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:34,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:34,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:34,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:34,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:34,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:34,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:35,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:35,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:35,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:35,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:35,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:35,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:35,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:35,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:36,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:36,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:36,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:36,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:36,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:36,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:37,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:37,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:37,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:37,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:37,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-09-04 16:31:38,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953110639] [2020-09-04 16:31:38,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:38,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2020-09-04 16:31:38,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440884926] [2020-09-04 16:31:38,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-09-04 16:31:38,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:38,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-09-04 16:31:38,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 16:31:38,268 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 57 states. [2020-09-04 16:31:42,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:42,201 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2020-09-04 16:31:42,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-09-04 16:31:42,204 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 198 [2020-09-04 16:31:42,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:42,206 INFO L225 Difference]: With dead ends: 131 [2020-09-04 16:31:42,206 INFO L226 Difference]: Without dead ends: 126 [2020-09-04 16:31:42,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=219, Invalid=6753, Unknown=0, NotChecked=0, Total=6972 [2020-09-04 16:31:42,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-04 16:31:42,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-09-04 16:31:42,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-04 16:31:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2020-09-04 16:31:42,215 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 198 [2020-09-04 16:31:42,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:42,215 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2020-09-04 16:31:42,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-09-04 16:31:42,215 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2020-09-04 16:31:42,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-04 16:31:42,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:42,217 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:31:42,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-04 16:31:42,217 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:42,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:42,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1780657907, now seen corresponding path program 27 times [2020-09-04 16:31:42,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:42,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617515614] [2020-09-04 16:31:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:42,220 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:42,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:42,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:42,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:42,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:42,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:42,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:42,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:43,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:43,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:43,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:43,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:43,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:43,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:43,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:43,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:43,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:44,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:44,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:44,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:44,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:44,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:44,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:45,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:45,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:45,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:45,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:45,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:46,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-09-04 16:31:46,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617515614] [2020-09-04 16:31:46,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:46,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2020-09-04 16:31:46,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483273859] [2020-09-04 16:31:46,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-09-04 16:31:46,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:46,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-09-04 16:31:46,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2020-09-04 16:31:46,608 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 59 states. [2020-09-04 16:31:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:50,768 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2020-09-04 16:31:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-09-04 16:31:50,769 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 205 [2020-09-04 16:31:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:50,770 INFO L225 Difference]: With dead ends: 135 [2020-09-04 16:31:50,771 INFO L226 Difference]: Without dead ends: 130 [2020-09-04 16:31:50,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=227, Invalid=7255, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 16:31:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-04 16:31:50,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-09-04 16:31:50,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-04 16:31:50,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2020-09-04 16:31:50,780 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 205 [2020-09-04 16:31:50,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:50,780 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2020-09-04 16:31:50,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-09-04 16:31:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2020-09-04 16:31:50,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-04 16:31:50,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:50,782 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:31:50,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-04 16:31:50,782 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:50,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:50,783 INFO L82 PathProgramCache]: Analyzing trace with hash -642725794, now seen corresponding path program 28 times [2020-09-04 16:31:50,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:50,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601836301] [2020-09-04 16:31:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:50,785 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:50,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:50,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:50,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:51,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:52,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:52,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:52,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:52,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:52,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:52,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:52,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:53,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:53,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:53,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:53,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:53,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:53,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:54,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:54,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:54,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:54,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:31:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-09-04 16:31:55,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601836301] [2020-09-04 16:31:55,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:31:55,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2020-09-04 16:31:55,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199007146] [2020-09-04 16:31:55,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-09-04 16:31:55,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:31:55,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-09-04 16:31:55,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2020-09-04 16:31:55,323 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand 61 states. [2020-09-04 16:31:59,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:31:59,791 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2020-09-04 16:31:59,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-09-04 16:31:59,792 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 212 [2020-09-04 16:31:59,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:31:59,793 INFO L225 Difference]: With dead ends: 139 [2020-09-04 16:31:59,793 INFO L226 Difference]: Without dead ends: 134 [2020-09-04 16:31:59,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=235, Invalid=7775, Unknown=0, NotChecked=0, Total=8010 [2020-09-04 16:31:59,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-04 16:31:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-09-04 16:31:59,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-04 16:31:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2020-09-04 16:31:59,804 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 212 [2020-09-04 16:31:59,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:31:59,805 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2020-09-04 16:31:59,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-09-04 16:31:59,805 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2020-09-04 16:31:59,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-04 16:31:59,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:31:59,807 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:31:59,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-04 16:31:59,808 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:31:59,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:31:59,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1218916449, now seen corresponding path program 29 times [2020-09-04 16:31:59,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:31:59,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123716026] [2020-09-04 16:31:59,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:31:59,811 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:31:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:59,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:31:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:31:59,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:31:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:00,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:01,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:01,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:01,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:01,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:01,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:01,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:02,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:02,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:02,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:02,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:02,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:02,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:03,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:03,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:03,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:03,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:03,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:04,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-09-04 16:32:04,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123716026] [2020-09-04 16:32:04,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:04,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2020-09-04 16:32:04,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831805805] [2020-09-04 16:32:04,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-09-04 16:32:04,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:04,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-09-04 16:32:04,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 16:32:04,712 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 63 states. [2020-09-04 16:32:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:09,542 INFO L93 Difference]: Finished difference Result 143 states and 144 transitions. [2020-09-04 16:32:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-09-04 16:32:09,543 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 219 [2020-09-04 16:32:09,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:09,544 INFO L225 Difference]: With dead ends: 143 [2020-09-04 16:32:09,544 INFO L226 Difference]: Without dead ends: 138 [2020-09-04 16:32:09,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=243, Invalid=8313, Unknown=0, NotChecked=0, Total=8556 [2020-09-04 16:32:09,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-04 16:32:09,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-09-04 16:32:09,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-04 16:32:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2020-09-04 16:32:09,554 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 219 [2020-09-04 16:32:09,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:09,555 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2020-09-04 16:32:09,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-09-04 16:32:09,555 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2020-09-04 16:32:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-04 16:32:09,557 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:09,557 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:09,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-04 16:32:09,557 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:09,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:09,558 INFO L82 PathProgramCache]: Analyzing trace with hash 932597744, now seen corresponding path program 30 times [2020-09-04 16:32:09,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:09,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900219294] [2020-09-04 16:32:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:09,560 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:09,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:09,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:32:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:09,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:09,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:10,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:11,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:11,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:11,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:11,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:11,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:11,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:12,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:12,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:12,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:12,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:12,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:12,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:13,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:13,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:13,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:13,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:13,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:14,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:14,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-09-04 16:32:14,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900219294] [2020-09-04 16:32:14,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:14,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2020-09-04 16:32:14,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193746653] [2020-09-04 16:32:14,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-09-04 16:32:14,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:14,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-09-04 16:32:14,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2020-09-04 16:32:14,916 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 65 states. [2020-09-04 16:32:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:20,127 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2020-09-04 16:32:20,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-09-04 16:32:20,128 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 226 [2020-09-04 16:32:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:20,130 INFO L225 Difference]: With dead ends: 147 [2020-09-04 16:32:20,130 INFO L226 Difference]: Without dead ends: 142 [2020-09-04 16:32:20,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=251, Invalid=8869, Unknown=0, NotChecked=0, Total=9120 [2020-09-04 16:32:20,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-04 16:32:20,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-09-04 16:32:20,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-04 16:32:20,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2020-09-04 16:32:20,141 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 226 [2020-09-04 16:32:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:20,141 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2020-09-04 16:32:20,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-09-04 16:32:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2020-09-04 16:32:20,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-04 16:32:20,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:20,143 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:20,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-04 16:32:20,144 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:20,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:20,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1369285583, now seen corresponding path program 31 times [2020-09-04 16:32:20,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:20,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712945020] [2020-09-04 16:32:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:20,146 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:32:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:20,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:21,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:22,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:22,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:22,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:22,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:22,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:23,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:23,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:23,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:23,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:23,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:24,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:24,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:24,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:24,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:25,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:25,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-09-04 16:32:25,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712945020] [2020-09-04 16:32:25,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:25,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2020-09-04 16:32:25,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271202175] [2020-09-04 16:32:25,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-09-04 16:32:25,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:25,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-09-04 16:32:25,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2020-09-04 16:32:25,888 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 67 states. [2020-09-04 16:32:31,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:31,473 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2020-09-04 16:32:31,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-09-04 16:32:31,474 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 233 [2020-09-04 16:32:31,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:31,475 INFO L225 Difference]: With dead ends: 151 [2020-09-04 16:32:31,476 INFO L226 Difference]: Without dead ends: 146 [2020-09-04 16:32:31,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=259, Invalid=9443, Unknown=0, NotChecked=0, Total=9702 [2020-09-04 16:32:31,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-04 16:32:31,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-04 16:32:31,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-04 16:32:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2020-09-04 16:32:31,488 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 233 [2020-09-04 16:32:31,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:31,489 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2020-09-04 16:32:31,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-09-04 16:32:31,489 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2020-09-04 16:32:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-04 16:32:31,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:31,491 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:31,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-04 16:32:31,491 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:31,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:31,491 INFO L82 PathProgramCache]: Analyzing trace with hash -598776446, now seen corresponding path program 32 times [2020-09-04 16:32:31,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:31,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627713598] [2020-09-04 16:32:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:31,502 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:31,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:31,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:32:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:31,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:31,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:31,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:32,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:34,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:34,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:34,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:34,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:34,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:34,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:35,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:35,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:35,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:35,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-09-04 16:32:37,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627713598] [2020-09-04 16:32:37,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:37,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2020-09-04 16:32:37,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014916813] [2020-09-04 16:32:37,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-09-04 16:32:37,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:37,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-09-04 16:32:37,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 16:32:37,650 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 69 states. [2020-09-04 16:32:43,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:43,733 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2020-09-04 16:32:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-09-04 16:32:43,734 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 240 [2020-09-04 16:32:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:43,736 INFO L225 Difference]: With dead ends: 155 [2020-09-04 16:32:43,737 INFO L226 Difference]: Without dead ends: 150 [2020-09-04 16:32:43,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=267, Invalid=10035, Unknown=0, NotChecked=0, Total=10302 [2020-09-04 16:32:43,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-04 16:32:43,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-09-04 16:32:43,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-04 16:32:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 151 transitions. [2020-09-04 16:32:43,747 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 151 transitions. Word has length 240 [2020-09-04 16:32:43,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:43,747 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 151 transitions. [2020-09-04 16:32:43,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-09-04 16:32:43,748 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 151 transitions. [2020-09-04 16:32:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-04 16:32:43,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:43,749 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:43,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-04 16:32:43,750 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:43,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:43,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2075915971, now seen corresponding path program 33 times [2020-09-04 16:32:43,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:43,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649532656] [2020-09-04 16:32:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:43,752 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:43,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:43,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:32:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:44,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:44,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:44,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:44,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:44,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:44,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:44,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:45,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:45,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:45,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:45,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:45,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:45,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:45,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:46,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:46,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:46,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:46,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:48,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:48,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:48,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:48,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:48,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:49,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:49,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:49,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-09-04 16:32:50,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649532656] [2020-09-04 16:32:50,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:50,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2020-09-04 16:32:50,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859667162] [2020-09-04 16:32:50,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-09-04 16:32:50,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:50,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-09-04 16:32:50,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2020-09-04 16:32:50,399 INFO L87 Difference]: Start difference. First operand 150 states and 151 transitions. Second operand 71 states. [2020-09-04 16:32:56,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:56,868 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2020-09-04 16:32:56,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-09-04 16:32:56,870 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 247 [2020-09-04 16:32:56,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:56,871 INFO L225 Difference]: With dead ends: 159 [2020-09-04 16:32:56,872 INFO L226 Difference]: Without dead ends: 154 [2020-09-04 16:32:56,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=275, Invalid=10645, Unknown=0, NotChecked=0, Total=10920 [2020-09-04 16:32:56,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-04 16:32:56,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-09-04 16:32:56,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-04 16:32:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2020-09-04 16:32:56,881 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 247 [2020-09-04 16:32:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:56,882 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2020-09-04 16:32:56,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-09-04 16:32:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2020-09-04 16:32:56,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-04 16:32:56,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:56,884 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:56,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-04 16:32:56,884 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:56,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:56,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1673398548, now seen corresponding path program 34 times [2020-09-04 16:32:56,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:56,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088356801] [2020-09-04 16:32:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:56,887 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:57,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:57,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:32:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:57,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:57,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:57,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:57,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:57,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:57,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:58,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:58,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:58,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:58,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:58,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:58,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:59,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:59,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:59,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:59,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:32:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:00,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:00,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:00,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:00,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:00,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:01,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:01,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:01,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:01,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:01,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:02,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:02,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:02,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:02,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:03,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-09-04 16:33:04,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088356801] [2020-09-04 16:33:04,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:04,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2020-09-04 16:33:04,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642859632] [2020-09-04 16:33:04,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-09-04 16:33:04,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:04,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-09-04 16:33:04,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2020-09-04 16:33:04,064 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 73 states. [2020-09-04 16:33:10,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:10,966 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2020-09-04 16:33:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-09-04 16:33:10,967 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 254 [2020-09-04 16:33:10,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:10,969 INFO L225 Difference]: With dead ends: 163 [2020-09-04 16:33:10,969 INFO L226 Difference]: Without dead ends: 158 [2020-09-04 16:33:10,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=283, Invalid=11273, Unknown=0, NotChecked=0, Total=11556 [2020-09-04 16:33:10,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-04 16:33:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-04 16:33:10,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-04 16:33:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2020-09-04 16:33:10,980 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 254 [2020-09-04 16:33:10,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:10,981 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2020-09-04 16:33:10,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-09-04 16:33:10,981 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2020-09-04 16:33:10,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-04 16:33:10,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:10,983 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:10,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-04 16:33:10,983 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:10,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:10,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1244110677, now seen corresponding path program 35 times [2020-09-04 16:33:10,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:10,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717313633] [2020-09-04 16:33:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:10,986 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:11,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:11,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:33:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:11,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:11,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:11,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:11,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:12,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:12,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:12,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:12,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:12,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:13,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:13,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:13,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:13,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:14,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:14,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:14,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:14,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:14,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:14,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:15,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:15,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:15,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:15,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:17,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:17,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:17,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:17,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:18,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-09-04 16:33:18,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717313633] [2020-09-04 16:33:18,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:18,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2020-09-04 16:33:18,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929489704] [2020-09-04 16:33:18,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-09-04 16:33:18,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:18,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-09-04 16:33:18,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 16:33:18,649 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand 75 states. [2020-09-04 16:33:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:25,960 INFO L93 Difference]: Finished difference Result 167 states and 168 transitions. [2020-09-04 16:33:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-09-04 16:33:25,961 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 261 [2020-09-04 16:33:25,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:25,964 INFO L225 Difference]: With dead ends: 167 [2020-09-04 16:33:25,964 INFO L226 Difference]: Without dead ends: 162 [2020-09-04 16:33:25,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=291, Invalid=11919, Unknown=0, NotChecked=0, Total=12210 [2020-09-04 16:33:25,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-04 16:33:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-09-04 16:33:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-04 16:33:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2020-09-04 16:33:25,975 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 261 [2020-09-04 16:33:25,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:25,975 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2020-09-04 16:33:25,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-09-04 16:33:25,976 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2020-09-04 16:33:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-04 16:33:25,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:25,978 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:25,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-09-04 16:33:25,978 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:25,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:25,979 INFO L82 PathProgramCache]: Analyzing trace with hash -607896922, now seen corresponding path program 36 times [2020-09-04 16:33:25,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:25,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746383584] [2020-09-04 16:33:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:25,981 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:26,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:26,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:33:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:26,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:26,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:26,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:27,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:28,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:28,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:28,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:28,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:29,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:29,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:29,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:29,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:29,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:30,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:30,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:30,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:30,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:31,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:31,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:31,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:32,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:32,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:32,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:33,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-09-04 16:33:34,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746383584] [2020-09-04 16:33:34,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:34,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2020-09-04 16:33:34,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808376695] [2020-09-04 16:33:34,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-09-04 16:33:34,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:34,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-09-04 16:33:34,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2020-09-04 16:33:34,032 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 77 states. [2020-09-04 16:33:41,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:41,843 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2020-09-04 16:33:41,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-09-04 16:33:41,844 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 268 [2020-09-04 16:33:41,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:41,846 INFO L225 Difference]: With dead ends: 171 [2020-09-04 16:33:41,846 INFO L226 Difference]: Without dead ends: 166 [2020-09-04 16:33:41,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=299, Invalid=12583, Unknown=0, NotChecked=0, Total=12882 [2020-09-04 16:33:41,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-04 16:33:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-04 16:33:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-04 16:33:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2020-09-04 16:33:41,857 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 268 [2020-09-04 16:33:41,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:41,857 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2020-09-04 16:33:41,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-09-04 16:33:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2020-09-04 16:33:41,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-04 16:33:41,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:41,859 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:41,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-04 16:33:41,860 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:41,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:41,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1852265959, now seen corresponding path program 37 times [2020-09-04 16:33:41,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:41,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812473239] [2020-09-04 16:33:41,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:41,862 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:33:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:42,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:43,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:43,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:43,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:43,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:43,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:43,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:44,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:44,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:44,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:44,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:44,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:45,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:45,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:45,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:45,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:45,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:46,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:46,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:46,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:46,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:46,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:47,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:47,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:47,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:48,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:48,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:48,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:48,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:49,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:49,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-09-04 16:33:50,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812473239] [2020-09-04 16:33:50,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:50,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2020-09-04 16:33:50,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926584778] [2020-09-04 16:33:50,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-09-04 16:33:50,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:50,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-09-04 16:33:50,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2020-09-04 16:33:50,395 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 79 states. [2020-09-04 16:33:58,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:58,955 INFO L93 Difference]: Finished difference Result 175 states and 176 transitions. [2020-09-04 16:33:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-09-04 16:33:58,956 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 275 [2020-09-04 16:33:58,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:58,958 INFO L225 Difference]: With dead ends: 175 [2020-09-04 16:33:58,958 INFO L226 Difference]: Without dead ends: 170 [2020-09-04 16:33:58,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=307, Invalid=13265, Unknown=0, NotChecked=0, Total=13572 [2020-09-04 16:33:58,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-04 16:33:58,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-09-04 16:33:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-04 16:33:58,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions. [2020-09-04 16:33:58,969 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 275 [2020-09-04 16:33:58,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:58,970 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions. [2020-09-04 16:33:58,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-09-04 16:33:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions. [2020-09-04 16:33:58,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-04 16:33:58,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:58,972 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:58,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-04 16:33:58,972 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:58,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:58,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1002177992, now seen corresponding path program 38 times [2020-09-04 16:33:58,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:58,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182017050] [2020-09-04 16:33:58,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:58,975 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:59,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:33:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:59,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:59,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:59,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:33:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:00,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:00,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:00,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:00,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:00,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:00,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:01,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:01,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:01,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:01,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:01,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:02,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:02,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:02,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:02,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:02,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:03,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:03,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:03,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:03,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:04,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:04,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:04,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:05,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:05,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:05,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:05,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:06,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:06,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:06,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:06,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:07,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-09-04 16:34:08,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182017050] [2020-09-04 16:34:08,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:08,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2020-09-04 16:34:08,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926873590] [2020-09-04 16:34:08,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-09-04 16:34:08,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:08,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-09-04 16:34:08,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2020-09-04 16:34:08,352 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand 81 states. [2020-09-04 16:34:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:17,349 INFO L93 Difference]: Finished difference Result 179 states and 180 transitions. [2020-09-04 16:34:17,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-09-04 16:34:17,351 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 282 [2020-09-04 16:34:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:17,353 INFO L225 Difference]: With dead ends: 179 [2020-09-04 16:34:17,353 INFO L226 Difference]: Without dead ends: 174 [2020-09-04 16:34:17,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=315, Invalid=13965, Unknown=0, NotChecked=0, Total=14280 [2020-09-04 16:34:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-04 16:34:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-04 16:34:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-04 16:34:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2020-09-04 16:34:17,363 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 282 [2020-09-04 16:34:17,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:17,364 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2020-09-04 16:34:17,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-09-04 16:34:17,364 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2020-09-04 16:34:17,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-09-04 16:34:17,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:17,366 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:34:17,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-09-04 16:34:17,367 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:17,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:17,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1732057721, now seen corresponding path program 39 times [2020-09-04 16:34:17,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:17,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361912114] [2020-09-04 16:34:17,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:17,369 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:17,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:17,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:34:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:17,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:17,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:18,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:18,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:18,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:18,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:18,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:19,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:19,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:19,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:19,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:20,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:20,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:20,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:20,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:20,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:21,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:21,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:21,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:21,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:22,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:22,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:22,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:22,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:22,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:23,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:23,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:23,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:24,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:24,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:24,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:24,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:25,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:25,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:25,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:25,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:27,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2020-09-04 16:34:27,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361912114] [2020-09-04 16:34:27,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:27,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2020-09-04 16:34:27,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635187248] [2020-09-04 16:34:27,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-09-04 16:34:27,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:27,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-09-04 16:34:27,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2020-09-04 16:34:27,173 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 83 states. [2020-09-04 16:34:36,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:36,696 INFO L93 Difference]: Finished difference Result 183 states and 184 transitions. [2020-09-04 16:34:36,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-09-04 16:34:36,697 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 289 [2020-09-04 16:34:36,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:36,700 INFO L225 Difference]: With dead ends: 183 [2020-09-04 16:34:36,700 INFO L226 Difference]: Without dead ends: 178 [2020-09-04 16:34:36,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=323, Invalid=14683, Unknown=0, NotChecked=0, Total=15006 [2020-09-04 16:34:36,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-04 16:34:36,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-09-04 16:34:36,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-04 16:34:36,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 179 transitions. [2020-09-04 16:34:36,711 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 179 transitions. Word has length 289 [2020-09-04 16:34:36,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:36,711 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 179 transitions. [2020-09-04 16:34:36,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-09-04 16:34:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 179 transitions. [2020-09-04 16:34:36,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-09-04 16:34:36,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:36,714 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:34:36,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-09-04 16:34:36,714 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:36,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:36,715 INFO L82 PathProgramCache]: Analyzing trace with hash 253708234, now seen corresponding path program 40 times [2020-09-04 16:34:36,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:36,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274752046] [2020-09-04 16:34:36,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:36,717 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:36,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:34:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:37,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:37,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:37,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:37,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:37,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:37,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:38,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:38,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:38,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:38,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:38,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:39,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:39,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:39,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:39,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:39,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:40,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:40,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:40,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:40,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:40,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:41,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:41,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:41,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:41,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:42,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:42,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:42,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:42,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:43,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:43,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:43,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:43,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:44,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:44,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:44,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:45,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:45,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:45,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-09-04 16:34:47,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274752046] [2020-09-04 16:34:47,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:47,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2020-09-04 16:34:47,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416584053] [2020-09-04 16:34:47,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-09-04 16:34:47,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:47,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-09-04 16:34:47,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2020-09-04 16:34:47,082 INFO L87 Difference]: Start difference. First operand 178 states and 179 transitions. Second operand 85 states. [2020-09-04 16:34:57,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:57,107 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2020-09-04 16:34:57,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-09-04 16:34:57,109 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 296 [2020-09-04 16:34:57,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:57,110 INFO L225 Difference]: With dead ends: 187 [2020-09-04 16:34:57,110 INFO L226 Difference]: Without dead ends: 182 [2020-09-04 16:34:57,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=331, Invalid=15419, Unknown=0, NotChecked=0, Total=15750 [2020-09-04 16:34:57,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-04 16:34:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-09-04 16:34:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-04 16:34:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2020-09-04 16:34:57,120 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 296 [2020-09-04 16:34:57,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:57,120 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2020-09-04 16:34:57,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-09-04 16:34:57,121 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2020-09-04 16:34:57,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-04 16:34:57,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:57,123 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:34:57,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-04 16:34:57,123 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:57,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:57,123 INFO L82 PathProgramCache]: Analyzing trace with hash -580195061, now seen corresponding path program 41 times [2020-09-04 16:34:57,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:57,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139111625] [2020-09-04 16:34:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:57,126 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:57,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:34:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:57,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:57,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:57,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:58,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:58,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:58,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:58,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:58,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:59,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:59,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:59,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:59,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:59,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:00,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:00,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:00,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:00,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:01,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:01,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:01,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:02,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:02,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:02,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:02,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:04,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:04,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:04,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:05,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:05,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:05,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:06,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:06,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:06,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2020-09-04 16:35:08,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139111625] [2020-09-04 16:35:08,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:35:08,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2020-09-04 16:35:08,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402565753] [2020-09-04 16:35:08,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-09-04 16:35:08,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:35:08,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-09-04 16:35:08,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 16:35:08,328 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand 87 states. [2020-09-04 16:35:19,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:35:19,478 INFO L93 Difference]: Finished difference Result 191 states and 192 transitions. [2020-09-04 16:35:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-09-04 16:35:19,479 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 303 [2020-09-04 16:35:19,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:35:19,481 INFO L225 Difference]: With dead ends: 191 [2020-09-04 16:35:19,481 INFO L226 Difference]: Without dead ends: 186 [2020-09-04 16:35:19,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=339, Invalid=16173, Unknown=0, NotChecked=0, Total=16512 [2020-09-04 16:35:19,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-04 16:35:19,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-09-04 16:35:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-04 16:35:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2020-09-04 16:35:19,493 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 303 [2020-09-04 16:35:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:35:19,493 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2020-09-04 16:35:19,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-09-04 16:35:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2020-09-04 16:35:19,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-09-04 16:35:19,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:35:19,496 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:35:19,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-04 16:35:19,496 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:35:19,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:35:19,497 INFO L82 PathProgramCache]: Analyzing trace with hash 540549980, now seen corresponding path program 42 times [2020-09-04 16:35:19,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:35:19,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525996797] [2020-09-04 16:35:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:35:19,499 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:35:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:19,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:19,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:35:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:19,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:20,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:20,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:20,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:20,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:20,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:21,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:21,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:21,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:21,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:21,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:21,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:22,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:22,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:22,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:22,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:22,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:23,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:23,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:23,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:24,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:24,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:24,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:24,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:26,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:26,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:26,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:27,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:27,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:27,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:27,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:28,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:28,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:29,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2667 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2020-09-04 16:35:31,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525996797] [2020-09-04 16:35:31,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:35:31,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2020-09-04 16:35:31,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305430171] [2020-09-04 16:35:31,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-09-04 16:35:31,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:35:31,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-09-04 16:35:31,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2020-09-04 16:35:31,232 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand 89 states. [2020-09-04 16:35:42,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:35:42,605 INFO L93 Difference]: Finished difference Result 195 states and 196 transitions. [2020-09-04 16:35:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-09-04 16:35:42,606 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 310 [2020-09-04 16:35:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:35:42,607 INFO L225 Difference]: With dead ends: 195 [2020-09-04 16:35:42,608 INFO L226 Difference]: Without dead ends: 190 [2020-09-04 16:35:42,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=347, Invalid=16945, Unknown=0, NotChecked=0, Total=17292 [2020-09-04 16:35:42,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-04 16:35:42,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-09-04 16:35:42,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-04 16:35:42,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2020-09-04 16:35:42,619 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 310 [2020-09-04 16:35:42,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:35:42,619 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2020-09-04 16:35:42,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-09-04 16:35:42,620 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2020-09-04 16:35:42,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-09-04 16:35:42,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:35:42,622 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:35:42,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-09-04 16:35:42,622 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:35:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:35:42,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1548563043, now seen corresponding path program 43 times [2020-09-04 16:35:42,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:35:42,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808543606] [2020-09-04 16:35:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:35:42,625 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:35:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:42,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:42,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:35:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:42,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:43,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:43,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:43,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:43,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:43,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:44,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:44,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:44,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:44,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:44,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:44,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:45,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:45,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:45,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:45,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:46,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:46,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:46,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:46,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:47,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:47,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:47,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:47,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:50,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:50,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:50,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:51,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:51,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:52,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:52,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:52,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:53,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2795 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2795 trivial. 0 not checked. [2020-09-04 16:35:54,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808543606] [2020-09-04 16:35:54,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:35:54,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2020-09-04 16:35:54,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494635511] [2020-09-04 16:35:54,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-09-04 16:35:54,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:35:54,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-09-04 16:35:54,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2020-09-04 16:35:54,726 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand 91 states. [2020-09-04 16:36:06,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:36:06,670 INFO L93 Difference]: Finished difference Result 199 states and 200 transitions. [2020-09-04 16:36:06,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2020-09-04 16:36:06,671 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 317 [2020-09-04 16:36:06,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:36:06,673 INFO L225 Difference]: With dead ends: 199 [2020-09-04 16:36:06,673 INFO L226 Difference]: Without dead ends: 194 [2020-09-04 16:36:06,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=355, Invalid=17735, Unknown=0, NotChecked=0, Total=18090 [2020-09-04 16:36:06,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-04 16:36:06,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-09-04 16:36:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-04 16:36:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2020-09-04 16:36:06,684 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 317 [2020-09-04 16:36:06,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:36:06,685 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2020-09-04 16:36:06,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-09-04 16:36:06,685 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2020-09-04 16:36:06,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-04 16:36:06,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:36:06,687 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:36:06,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-09-04 16:36:06,688 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:36:06,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:36:06,688 INFO L82 PathProgramCache]: Analyzing trace with hash -848261906, now seen corresponding path program 44 times [2020-09-04 16:36:06,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:36:06,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892800733] [2020-09-04 16:36:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:36:06,690 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:36:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:36:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:07,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:07,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:07,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:07,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:07,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:08,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:08,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:08,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:08,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:08,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:09,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:09,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:09,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:09,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:09,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:12,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:12,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:12,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:13,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:13,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:13,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:13,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:14,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:14,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:14,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:15,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:15,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:15,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:16,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:16,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:16,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:16,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:17,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2926 trivial. 0 not checked. [2020-09-04 16:36:19,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892800733] [2020-09-04 16:36:19,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:36:19,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2020-09-04 16:36:19,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077017464] [2020-09-04 16:36:19,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-09-04 16:36:19,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:36:19,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-09-04 16:36:19,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2020-09-04 16:36:19,264 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand 93 states. [2020-09-04 16:36:31,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:36:31,843 INFO L93 Difference]: Finished difference Result 203 states and 204 transitions. [2020-09-04 16:36:31,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2020-09-04 16:36:31,844 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 324 [2020-09-04 16:36:31,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:36:31,846 INFO L225 Difference]: With dead ends: 203 [2020-09-04 16:36:31,846 INFO L226 Difference]: Without dead ends: 198 [2020-09-04 16:36:31,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=363, Invalid=18543, Unknown=0, NotChecked=0, Total=18906 [2020-09-04 16:36:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-04 16:36:31,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-09-04 16:36:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-04 16:36:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2020-09-04 16:36:31,858 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 324 [2020-09-04 16:36:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:36:31,858 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2020-09-04 16:36:31,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-09-04 16:36:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2020-09-04 16:36:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-09-04 16:36:31,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:36:31,861 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:36:31,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-09-04 16:36:31,861 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:36:31,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:36:31,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1227441105, now seen corresponding path program 45 times [2020-09-04 16:36:31,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:36:31,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723612899] [2020-09-04 16:36:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:36:31,864 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:36:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:32,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:32,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:36:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:32,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:32,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:32,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:32,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:32,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:33,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:33,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:33,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:33,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:33,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:34,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:34,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:34,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:34,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:34,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:35,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:35,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:35,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:35,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:36,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:36,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:36,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:36,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:37,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:37,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:37,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:37,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:38,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:38,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:38,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:39,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:39,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:39,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:40,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:40,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:40,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:41,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:41,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:41,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:42,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:42,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:42,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:43,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:43,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:45,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3060 trivial. 0 not checked. [2020-09-04 16:36:45,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723612899] [2020-09-04 16:36:45,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:36:45,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2020-09-04 16:36:45,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198036114] [2020-09-04 16:36:45,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-09-04 16:36:45,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:36:45,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-09-04 16:36:45,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2020-09-04 16:36:45,341 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 95 states. [2020-09-04 16:36:59,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:36:59,487 INFO L93 Difference]: Finished difference Result 207 states and 208 transitions. [2020-09-04 16:36:59,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2020-09-04 16:36:59,489 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 331 [2020-09-04 16:36:59,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:36:59,491 INFO L225 Difference]: With dead ends: 207 [2020-09-04 16:36:59,491 INFO L226 Difference]: Without dead ends: 202 [2020-09-04 16:36:59,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=371, Invalid=19369, Unknown=0, NotChecked=0, Total=19740 [2020-09-04 16:36:59,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-04 16:36:59,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-04 16:36:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-04 16:36:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2020-09-04 16:36:59,503 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 331 [2020-09-04 16:36:59,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:36:59,504 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2020-09-04 16:36:59,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-09-04 16:36:59,504 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2020-09-04 16:36:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-09-04 16:36:59,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:36:59,507 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:36:59,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-09-04 16:36:59,507 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:36:59,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:36:59,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1588233344, now seen corresponding path program 46 times [2020-09-04 16:36:59,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:36:59,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828734649] [2020-09-04 16:36:59,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:36:59,510 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:36:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:59,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:59,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:36:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:00,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:00,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:00,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:01,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:01,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:01,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:01,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:01,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:02,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:02,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:02,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:02,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:03,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:03,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:03,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:03,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:04,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:04,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:04,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:05,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:05,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:05,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:06,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:06,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:06,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:06,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:07,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:07,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:07,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:08,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:08,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:08,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:09,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:09,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:09,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:10,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:10,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:11,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:11,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:12,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:12,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:12,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:13,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3197 trivial. 0 not checked. [2020-09-04 16:37:15,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828734649] [2020-09-04 16:37:15,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:37:15,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2020-09-04 16:37:15,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908157596] [2020-09-04 16:37:15,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-09-04 16:37:15,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:37:15,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-09-04 16:37:15,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2020-09-04 16:37:15,142 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand 97 states. [2020-09-04 16:37:29,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:37:29,998 INFO L93 Difference]: Finished difference Result 211 states and 212 transitions. [2020-09-04 16:37:30,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2020-09-04 16:37:30,000 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 338 [2020-09-04 16:37:30,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:37:30,001 INFO L225 Difference]: With dead ends: 211 [2020-09-04 16:37:30,001 INFO L226 Difference]: Without dead ends: 206 [2020-09-04 16:37:30,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=379, Invalid=20213, Unknown=0, NotChecked=0, Total=20592 [2020-09-04 16:37:30,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-04 16:37:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-09-04 16:37:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-09-04 16:37:30,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2020-09-04 16:37:30,012 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 338 [2020-09-04 16:37:30,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:37:30,012 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 207 transitions. [2020-09-04 16:37:30,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-09-04 16:37:30,012 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 207 transitions. [2020-09-04 16:37:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-09-04 16:37:30,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:37:30,015 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:37:30,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-04 16:37:30,015 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:37:30,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:37:30,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1033418945, now seen corresponding path program 47 times [2020-09-04 16:37:30,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:37:30,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870257695] [2020-09-04 16:37:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:37:30,018 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:37:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:30,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:37:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:30,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:37:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:30,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:30,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:30,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:30,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:31,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:31,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:31,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:31,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:32,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:32,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:32,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:32,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:33,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:33,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:33,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:33,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:34,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:34,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:35,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:35,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:35,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:36,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:36,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:36,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:36,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:37,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:37,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:37,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:38,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:38,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:39,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:39,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:39,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:40,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:40,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:40,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:41,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:41,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:42,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:42,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:42,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:43,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:43,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:44,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:37:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:37:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3337 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3337 trivial. 0 not checked. [2020-09-04 16:37:46,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870257695] [2020-09-04 16:37:46,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:37:46,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2020-09-04 16:37:46,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777847632] [2020-09-04 16:37:46,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-09-04 16:37:46,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:37:46,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-09-04 16:37:46,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2020-09-04 16:37:46,059 INFO L87 Difference]: Start difference. First operand 206 states and 207 transitions. Second operand 99 states. [2020-09-04 16:38:03,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:38:03,133 INFO L93 Difference]: Finished difference Result 215 states and 216 transitions. [2020-09-04 16:38:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2020-09-04 16:38:03,135 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 345 [2020-09-04 16:38:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:38:03,137 INFO L225 Difference]: With dead ends: 215 [2020-09-04 16:38:03,137 INFO L226 Difference]: Without dead ends: 210 [2020-09-04 16:38:03,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=387, Invalid=21075, Unknown=0, NotChecked=0, Total=21462 [2020-09-04 16:38:03,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-04 16:38:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-09-04 16:38:03,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-04 16:38:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 211 transitions. [2020-09-04 16:38:03,150 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 211 transitions. Word has length 345 [2020-09-04 16:38:03,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:38:03,151 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 211 transitions. [2020-09-04 16:38:03,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-09-04 16:38:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 211 transitions. [2020-09-04 16:38:03,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-09-04 16:38:03,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:38:03,153 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:38:03,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-04 16:38:03,154 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:38:03,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:38:03,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1916270062, now seen corresponding path program 48 times [2020-09-04 16:38:03,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:38:03,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155352718] [2020-09-04 16:38:03,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:38:03,156 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:38:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:03,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:38:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:03,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:38:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:03,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:03,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:04,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:04,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:04,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:05,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:05,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:05,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:05,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:06,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:06,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:06,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:06,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:06,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:07,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:07,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:07,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:08,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:08,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:08,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:08,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:09,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:09,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:09,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:10,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:10,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:10,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:11,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:11,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:11,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:12,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:12,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:13,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:13,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:14,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:14,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:14,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:15,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:15,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:16,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:16,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:16,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:17,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:17,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:18,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:20,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3480 trivial. 0 not checked. [2020-09-04 16:38:20,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155352718] [2020-09-04 16:38:20,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:38:20,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2020-09-04 16:38:20,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56349912] [2020-09-04 16:38:20,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-09-04 16:38:20,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:38:20,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-09-04 16:38:20,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2020-09-04 16:38:20,348 INFO L87 Difference]: Start difference. First operand 210 states and 211 transitions. Second operand 101 states. [2020-09-04 16:38:38,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:38:38,600 INFO L93 Difference]: Finished difference Result 219 states and 220 transitions. [2020-09-04 16:38:38,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2020-09-04 16:38:38,602 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 352 [2020-09-04 16:38:38,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:38:38,603 INFO L225 Difference]: With dead ends: 219 [2020-09-04 16:38:38,604 INFO L226 Difference]: Without dead ends: 214 [2020-09-04 16:38:38,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=395, Invalid=21955, Unknown=0, NotChecked=0, Total=22350 [2020-09-04 16:38:38,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-04 16:38:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-04 16:38:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-04 16:38:38,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2020-09-04 16:38:38,616 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 352 [2020-09-04 16:38:38,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:38:38,617 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2020-09-04 16:38:38,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-09-04 16:38:38,617 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2020-09-04 16:38:38,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-09-04 16:38:38,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:38:38,620 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:38:38,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-04 16:38:38,620 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:38:38,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:38:38,621 INFO L82 PathProgramCache]: Analyzing trace with hash -2001026221, now seen corresponding path program 49 times [2020-09-04 16:38:38,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:38:38,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116789280] [2020-09-04 16:38:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:38:38,623 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:38:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:38,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:38:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:38,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:38:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:39,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:39,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:39,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:39,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:39,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:40,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:40,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:40,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:40,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:41,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:41,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:41,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:41,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:42,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:42,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:42,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:42,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:43,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:43,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:43,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:44,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:44,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:44,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:45,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:45,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:45,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:46,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:46,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:47,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:48,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:48,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:49,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:49,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:50,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:50,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:51,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:51,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:52,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:52,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:53,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:53,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:54,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:38:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3626 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3626 trivial. 0 not checked. [2020-09-04 16:38:56,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116789280] [2020-09-04 16:38:56,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:38:56,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2020-09-04 16:38:56,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373224680] [2020-09-04 16:38:56,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-09-04 16:38:56,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:38:56,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-09-04 16:38:56,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2020-09-04 16:38:56,909 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 103 states. [2020-09-04 16:39:17,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:39:17,092 INFO L93 Difference]: Finished difference Result 223 states and 224 transitions. [2020-09-04 16:39:17,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2020-09-04 16:39:17,094 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 359 [2020-09-04 16:39:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:39:17,095 INFO L225 Difference]: With dead ends: 223 [2020-09-04 16:39:17,095 INFO L226 Difference]: Without dead ends: 218 [2020-09-04 16:39:17,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=403, Invalid=22853, Unknown=0, NotChecked=0, Total=23256 [2020-09-04 16:39:17,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-04 16:39:17,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-04 16:39:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-04 16:39:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 219 transitions. [2020-09-04 16:39:17,107 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 219 transitions. Word has length 359 [2020-09-04 16:39:17,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:39:17,107 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 219 transitions. [2020-09-04 16:39:17,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-09-04 16:39:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 219 transitions. [2020-09-04 16:39:17,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-09-04 16:39:17,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:39:17,110 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:39:17,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-09-04 16:39:17,110 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:39:17,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:39:17,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2035606108, now seen corresponding path program 50 times [2020-09-04 16:39:17,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:39:17,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679660873] [2020-09-04 16:39:17,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:39:17,113 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:39:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:17,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:39:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:17,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:39:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:17,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:17,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:17,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:18,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:18,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:19,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:19,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:19,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:20,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:20,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:20,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:21,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:21,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:21,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:22,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:22,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:22,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:22,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:23,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:23,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:23,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:24,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:24,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:25,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:25,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:26,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:27,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:27,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:28,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:29,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:29,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:30,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:30,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:30,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:31,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:32,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:32,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:33,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:33,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:34,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:34,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:35,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:39:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3775 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3775 trivial. 0 not checked. [2020-09-04 16:39:37,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679660873] [2020-09-04 16:39:37,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:39:37,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2020-09-04 16:39:37,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723210695] [2020-09-04 16:39:37,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-09-04 16:39:37,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:39:37,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-09-04 16:39:37,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2020-09-04 16:39:37,814 INFO L87 Difference]: Start difference. First operand 218 states and 219 transitions. Second operand 105 states. [2020-09-04 16:40:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:00,143 INFO L93 Difference]: Finished difference Result 227 states and 228 transitions. [2020-09-04 16:40:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2020-09-04 16:40:00,146 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 366 [2020-09-04 16:40:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:00,148 INFO L225 Difference]: With dead ends: 227 [2020-09-04 16:40:00,148 INFO L226 Difference]: Without dead ends: 222 [2020-09-04 16:40:00,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=411, Invalid=23769, Unknown=0, NotChecked=0, Total=24180 [2020-09-04 16:40:00,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-09-04 16:40:00,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-09-04 16:40:00,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-04 16:40:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2020-09-04 16:40:00,161 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 366 [2020-09-04 16:40:00,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:00,161 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2020-09-04 16:40:00,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-09-04 16:40:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2020-09-04 16:40:00,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-09-04 16:40:00,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:00,165 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:40:00,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-09-04 16:40:00,165 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:00,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:00,165 INFO L82 PathProgramCache]: Analyzing trace with hash 318692325, now seen corresponding path program 51 times [2020-09-04 16:40:00,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:00,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817365621] [2020-09-04 16:40:00,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:00,168 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:40:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:01,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:01,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:01,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:02,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:02,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:02,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:03,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:03,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:03,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:04,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:04,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:04,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:04,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:05,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:05,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:05,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:06,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:06,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:06,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:07,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:07,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:07,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:08,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:08,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:09,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:09,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:09,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:11,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:12,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:14,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:14,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:16,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:16,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:17,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:18,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:19,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3927 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3927 trivial. 0 not checked. [2020-09-04 16:40:21,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817365621] [2020-09-04 16:40:21,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:21,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2020-09-04 16:40:21,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685568506] [2020-09-04 16:40:21,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2020-09-04 16:40:21,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:21,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2020-09-04 16:40:21,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=11131, Unknown=0, NotChecked=0, Total=11342 [2020-09-04 16:40:21,519 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand 107 states. [2020-09-04 16:40:44,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:44,907 INFO L93 Difference]: Finished difference Result 231 states and 232 transitions. [2020-09-04 16:40:44,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2020-09-04 16:40:44,910 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 373 [2020-09-04 16:40:44,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:44,912 INFO L225 Difference]: With dead ends: 231 [2020-09-04 16:40:44,912 INFO L226 Difference]: Without dead ends: 226 [2020-09-04 16:40:44,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=419, Invalid=24703, Unknown=0, NotChecked=0, Total=25122 [2020-09-04 16:40:44,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-04 16:40:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-04 16:40:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-04 16:40:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2020-09-04 16:40:44,925 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 373 [2020-09-04 16:40:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:44,926 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2020-09-04 16:40:44,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 107 states. [2020-09-04 16:40:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2020-09-04 16:40:44,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-04 16:40:44,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:44,929 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:40:44,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-09-04 16:40:44,929 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:44,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:44,929 INFO L82 PathProgramCache]: Analyzing trace with hash -415908042, now seen corresponding path program 52 times [2020-09-04 16:40:44,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:44,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585639554] [2020-09-04 16:40:44,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:44,932 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:45,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:45,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:40:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:45,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:45,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:45,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:46,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:46,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:46,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:47,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:47,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:47,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:47,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:48,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:48,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:48,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:49,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:49,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:49,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:50,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:50,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:50,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:51,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:51,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:52,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:52,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:52,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:53,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:54,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:54,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:54,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:55,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:56,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:56,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:56,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:57,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:57,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:58,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:59,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:59,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:40:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:00,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:00,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:01,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:02,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:02,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:03,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:03,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:04,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:04,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4082 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4082 trivial. 0 not checked. [2020-09-04 16:41:07,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585639554] [2020-09-04 16:41:07,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:07,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2020-09-04 16:41:07,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178350547] [2020-09-04 16:41:07,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-09-04 16:41:07,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:07,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-09-04 16:41:07,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=11557, Unknown=0, NotChecked=0, Total=11772 [2020-09-04 16:41:07,382 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand 109 states. [2020-09-04 16:41:32,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:32,908 INFO L93 Difference]: Finished difference Result 235 states and 236 transitions. [2020-09-04 16:41:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2020-09-04 16:41:32,911 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 380 [2020-09-04 16:41:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:32,913 INFO L225 Difference]: With dead ends: 235 [2020-09-04 16:41:32,914 INFO L226 Difference]: Without dead ends: 230 [2020-09-04 16:41:32,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=427, Invalid=25655, Unknown=0, NotChecked=0, Total=26082 [2020-09-04 16:41:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-04 16:41:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-04 16:41:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-04 16:41:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 231 transitions. [2020-09-04 16:41:32,927 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 231 transitions. Word has length 380 [2020-09-04 16:41:32,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:32,927 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 231 transitions. [2020-09-04 16:41:32,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-09-04 16:41:32,927 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 231 transitions. [2020-09-04 16:41:32,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-09-04 16:41:32,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:32,930 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:32,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-04 16:41:32,930 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:32,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:32,931 INFO L82 PathProgramCache]: Analyzing trace with hash -2128149897, now seen corresponding path program 53 times [2020-09-04 16:41:32,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:32,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011539911] [2020-09-04 16:41:32,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:32,933 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:33,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:33,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:41:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:33,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:33,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:33,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:34,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:34,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:34,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:35,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:35,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:35,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:35,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:36,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:36,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:36,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:37,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:37,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:37,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:38,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:38,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:38,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:39,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:39,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:39,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:40,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:40,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:41,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:41,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:41,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:42,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:43,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:43,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:43,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:44,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:44,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:45,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:45,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:46,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:46,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:47,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:47,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:48,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:49,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:49,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:50,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:50,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:51,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:51,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:52,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:53,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:54,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:55,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:41:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4240 trivial. 0 not checked. [2020-09-04 16:41:58,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011539911] [2020-09-04 16:41:58,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:58,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2020-09-04 16:41:58,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984271155] [2020-09-04 16:41:58,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2020-09-04 16:41:58,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:58,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2020-09-04 16:41:58,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=11991, Unknown=0, NotChecked=0, Total=12210 [2020-09-04 16:41:58,558 INFO L87 Difference]: Start difference. First operand 230 states and 231 transitions. Second operand 111 states. [2020-09-04 16:42:25,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:42:25,450 INFO L93 Difference]: Finished difference Result 239 states and 240 transitions. [2020-09-04 16:42:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2020-09-04 16:42:25,453 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 387 [2020-09-04 16:42:25,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:42:25,455 INFO L225 Difference]: With dead ends: 239 [2020-09-04 16:42:25,455 INFO L226 Difference]: Without dead ends: 234 [2020-09-04 16:42:25,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=435, Invalid=26625, Unknown=0, NotChecked=0, Total=27060 [2020-09-04 16:42:25,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-09-04 16:42:25,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-09-04 16:42:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-04 16:42:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 235 transitions. [2020-09-04 16:42:25,464 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 235 transitions. Word has length 387 [2020-09-04 16:42:25,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:42:25,464 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 235 transitions. [2020-09-04 16:42:25,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 111 states. [2020-09-04 16:42:25,464 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 235 transitions. [2020-09-04 16:42:25,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-09-04 16:42:25,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:42:25,466 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:42:25,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-04 16:42:25,467 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:42:25,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:42:25,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1085673784, now seen corresponding path program 54 times [2020-09-04 16:42:25,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:42:25,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704025879] [2020-09-04 16:42:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:42:25,469 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:42:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:42:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 16:42:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:27,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:27,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:27,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:27,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:28,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:28,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:28,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:29,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:29,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:30,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:30,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:30,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:31,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:31,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:32,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:32,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:33,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:33,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:34,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:34,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:35,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:35,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:36,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:36,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:36,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:37,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:38,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:38,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:39,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:39,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:40,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:40,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:41,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:41,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:42,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:42,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:43,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:44,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:44,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:45,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:46,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:47,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:47,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:49,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:42:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:42:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4401 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4401 trivial. 0 not checked. [2020-09-04 16:42:52,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704025879] [2020-09-04 16:42:52,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:42:52,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2020-09-04 16:42:52,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430307165] [2020-09-04 16:42:52,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2020-09-04 16:42:52,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:42:52,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2020-09-04 16:42:52,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=12433, Unknown=0, NotChecked=0, Total=12656 [2020-09-04 16:42:52,446 INFO L87 Difference]: Start difference. First operand 234 states and 235 transitions. Second operand 113 states.