/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/Fibonacci03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:33:38,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:33:38,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:33:38,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 18:33:38,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:33:38,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:33:38,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:33:38,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:33:38,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:33:38,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:33:38,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:33:38,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:33:38,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:33:38,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:33:38,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:33:38,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:33:38,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:33:38,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:33:38,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:33:38,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:33:38,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:33:38,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:33:38,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:33:38,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:33:38,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:33:38,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:33:38,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:33:38,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:33:38,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:33:38,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:33:38,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:33:38,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:33:38,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:33:38,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:33:38,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:33:38,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:33:38,360 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:33:38,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:33:38,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:33:38,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:33:38,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:33:38,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:33:38,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:33:38,362 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:33:38,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:33:38,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:33:38,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:33:38,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:33:38,709 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:33:38,710 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci03.c [2020-08-22 18:33:38,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ec1b3a68/bb3b113e3fbd4c7986a48ad72ac7f270/FLAG04459b4f7 [2020-08-22 18:33:39,231 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:33:39,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci03.c [2020-08-22 18:33:39,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ec1b3a68/bb3b113e3fbd4c7986a48ad72ac7f270/FLAG04459b4f7 [2020-08-22 18:33:39,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ec1b3a68/bb3b113e3fbd4c7986a48ad72ac7f270 [2020-08-22 18:33:39,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:33:39,667 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:33:39,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:33:39,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:33:39,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:33:39,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:33:39" (1/1) ... [2020-08-22 18:33:39,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9e2a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:33:39, skipping insertion in model container [2020-08-22 18:33:39,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:33:39" (1/1) ... [2020-08-22 18:33:39,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:33:39,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:33:39,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:33:39,884 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:33:39,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:33:39,915 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:33:39,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:33:39 WrapperNode [2020-08-22 18:33:39,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:33:39,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:33:39,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:33:39,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:33:39,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:33:39" (1/1) ... [2020-08-22 18:33:39,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:33:39" (1/1) ... [2020-08-22 18:33:40,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:33:39" (1/1) ... [2020-08-22 18:33:40,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:33:39" (1/1) ... [2020-08-22 18:33:40,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:33:39" (1/1) ... [2020-08-22 18:33:40,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:33:39" (1/1) ... [2020-08-22 18:33:40,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:33:39" (1/1) ... [2020-08-22 18:33:40,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:33:40,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:33:40,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:33:40,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:33:40,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:33:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:33:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:33:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:33:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-08-22 18:33:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:33:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:33:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:33:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-08-22 18:33:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:33:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:33:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:33:40,275 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:33:40,276 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 18:33:40,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:33:40 BoogieIcfgContainer [2020-08-22 18:33:40,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:33:40,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:33:40,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:33:40,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:33:40,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:33:39" (1/3) ... [2020-08-22 18:33:40,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc63368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:33:40, skipping insertion in model container [2020-08-22 18:33:40,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:33:39" (2/3) ... [2020-08-22 18:33:40,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc63368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:33:40, skipping insertion in model container [2020-08-22 18:33:40,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:33:40" (3/3) ... [2020-08-22 18:33:40,315 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2020-08-22 18:33:40,347 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:33:40,358 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:33:40,374 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:33:40,414 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:33:40,414 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:33:40,414 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:33:40,415 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:33:40,415 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:33:40,415 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:33:40,415 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:33:40,415 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:33:40,429 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-22 18:33:40,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 18:33:40,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:33:40,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:33:40,442 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:33:40,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:33:40,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1379859160, now seen corresponding path program 1 times [2020-08-22 18:33:40,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:33:40,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443143628] [2020-08-22 18:33:40,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:33:40,513 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:33:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:40,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:33:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:40,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:33:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:33:40,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443143628] [2020-08-22 18:33:40,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:33:40,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:33:40,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655203225] [2020-08-22 18:33:40,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:33:40,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:33:40,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:33:40,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:33:40,698 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-08-22 18:33:40,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:33:40,834 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-08-22 18:33:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:33:40,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-22 18:33:40,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:33:40,847 INFO L225 Difference]: With dead ends: 50 [2020-08-22 18:33:40,847 INFO L226 Difference]: Without dead ends: 31 [2020-08-22 18:33:40,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:33:40,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-22 18:33:40,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-22 18:33:40,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 18:33:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-08-22 18:33:40,900 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-08-22 18:33:40,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:33:40,901 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-08-22 18:33:40,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:33:40,901 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-08-22 18:33:40,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 18:33:40,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:33:40,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:33:40,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:33:40,905 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:33:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:33:40,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2056866127, now seen corresponding path program 1 times [2020-08-22 18:33:40,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:33:40,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535964184] [2020-08-22 18:33:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:33:40,909 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:33:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:40,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:33:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:40,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:33:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:33:40,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535964184] [2020-08-22 18:33:40,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:33:40,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:33:40,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268986003] [2020-08-22 18:33:40,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:33:40,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:33:40,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:33:40,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:33:40,996 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-08-22 18:33:41,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:33:41,071 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-08-22 18:33:41,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:33:41,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-22 18:33:41,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:33:41,074 INFO L225 Difference]: With dead ends: 39 [2020-08-22 18:33:41,074 INFO L226 Difference]: Without dead ends: 33 [2020-08-22 18:33:41,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:33:41,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-22 18:33:41,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-08-22 18:33:41,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 18:33:41,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-08-22 18:33:41,088 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-08-22 18:33:41,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:33:41,088 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-08-22 18:33:41,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:33:41,089 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-08-22 18:33:41,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 18:33:41,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:33:41,091 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:33:41,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:33:41,091 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:33:41,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:33:41,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1274124978, now seen corresponding path program 1 times [2020-08-22 18:33:41,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:33:41,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501454527] [2020-08-22 18:33:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:33:41,095 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:33:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:33:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:33:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 18:33:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 18:33:41,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501454527] [2020-08-22 18:33:41,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:33:41,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:33:41,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242898365] [2020-08-22 18:33:41,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:33:41,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:33:41,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:33:41,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:33:41,241 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-08-22 18:33:41,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:33:41,327 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-08-22 18:33:41,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:33:41,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-08-22 18:33:41,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:33:41,329 INFO L225 Difference]: With dead ends: 55 [2020-08-22 18:33:41,329 INFO L226 Difference]: Without dead ends: 33 [2020-08-22 18:33:41,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:33:41,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-22 18:33:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-22 18:33:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-22 18:33:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-22 18:33:41,342 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2020-08-22 18:33:41,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:33:41,343 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-22 18:33:41,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:33:41,343 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-22 18:33:41,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 18:33:41,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:33:41,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:33:41,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:33:41,347 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:33:41,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:33:41,347 INFO L82 PathProgramCache]: Analyzing trace with hash -2043121517, now seen corresponding path program 1 times [2020-08-22 18:33:41,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:33:41,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929642786] [2020-08-22 18:33:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:33:41,350 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:33:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:33:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:33:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 18:33:41,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929642786] [2020-08-22 18:33:41,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:33:41,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:33:41,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873363642] [2020-08-22 18:33:41,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:33:41,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:33:41,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:33:41,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:33:41,500 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-08-22 18:33:41,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:33:41,614 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-08-22 18:33:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 18:33:41,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-08-22 18:33:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:33:41,618 INFO L225 Difference]: With dead ends: 59 [2020-08-22 18:33:41,618 INFO L226 Difference]: Without dead ends: 53 [2020-08-22 18:33:41,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:33:41,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-22 18:33:41,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-08-22 18:33:41,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-08-22 18:33:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2020-08-22 18:33:41,634 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 37 [2020-08-22 18:33:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:33:41,635 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2020-08-22 18:33:41,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:33:41,635 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2020-08-22 18:33:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 18:33:41,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:33:41,639 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:33:41,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:33:41,640 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:33:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:33:41,640 INFO L82 PathProgramCache]: Analyzing trace with hash 847598467, now seen corresponding path program 2 times [2020-08-22 18:33:41,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:33:41,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184521051] [2020-08-22 18:33:41,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:33:41,644 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:33:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:33:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:33:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-22 18:33:41,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184521051] [2020-08-22 18:33:41,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:33:41,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 18:33:41,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334008955] [2020-08-22 18:33:41,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 18:33:41,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:33:41,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 18:33:41,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:33:41,850 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand 7 states. [2020-08-22 18:33:41,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:33:41,958 INFO L93 Difference]: Finished difference Result 111 states and 154 transitions. [2020-08-22 18:33:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 18:33:41,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-22 18:33:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:33:41,961 INFO L225 Difference]: With dead ends: 111 [2020-08-22 18:33:41,961 INFO L226 Difference]: Without dead ends: 67 [2020-08-22 18:33:41,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:33:41,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-22 18:33:41,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-08-22 18:33:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-22 18:33:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-22 18:33:41,978 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 54 [2020-08-22 18:33:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:33:41,979 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-22 18:33:41,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 18:33:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-22 18:33:41,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-22 18:33:41,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:33:41,982 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:33:41,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:33:41,982 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:33:41,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:33:41,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1275966376, now seen corresponding path program 3 times [2020-08-22 18:33:41,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:33:41,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831091128] [2020-08-22 18:33:41,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:33:41,988 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:33:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:33:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:33:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,156 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 18:33:42,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831091128] [2020-08-22 18:33:42,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:33:42,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 18:33:42,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684845632] [2020-08-22 18:33:42,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 18:33:42,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:33:42,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 18:33:42,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:33:42,162 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand 7 states. [2020-08-22 18:33:42,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:33:42,287 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2020-08-22 18:33:42,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 18:33:42,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-08-22 18:33:42,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:33:42,290 INFO L225 Difference]: With dead ends: 89 [2020-08-22 18:33:42,290 INFO L226 Difference]: Without dead ends: 83 [2020-08-22 18:33:42,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:33:42,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-22 18:33:42,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2020-08-22 18:33:42,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-22 18:33:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 103 transitions. [2020-08-22 18:33:42,311 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 103 transitions. Word has length 55 [2020-08-22 18:33:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:33:42,312 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 103 transitions. [2020-08-22 18:33:42,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 18:33:42,312 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 103 transitions. [2020-08-22 18:33:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-22 18:33:42,318 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:33:42,318 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:33:42,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:33:42,319 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:33:42,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:33:42,319 INFO L82 PathProgramCache]: Analyzing trace with hash 237402259, now seen corresponding path program 4 times [2020-08-22 18:33:42,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:33:42,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435770621] [2020-08-22 18:33:42,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:33:42,322 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:33:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:33:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:33:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 23 proven. 69 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-08-22 18:33:42,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435770621] [2020-08-22 18:33:42,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:33:42,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 18:33:42,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811223036] [2020-08-22 18:33:42,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 18:33:42,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:33:42,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 18:33:42,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:33:42,622 INFO L87 Difference]: Start difference. First operand 77 states and 103 transitions. Second operand 10 states. [2020-08-22 18:33:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:33:42,896 INFO L93 Difference]: Finished difference Result 140 states and 202 transitions. [2020-08-22 18:33:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 18:33:42,897 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-08-22 18:33:42,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:33:42,900 INFO L225 Difference]: With dead ends: 140 [2020-08-22 18:33:42,900 INFO L226 Difference]: Without dead ends: 71 [2020-08-22 18:33:42,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-08-22 18:33:42,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-08-22 18:33:42,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2020-08-22 18:33:42,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-08-22 18:33:42,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2020-08-22 18:33:42,915 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 126 [2020-08-22 18:33:42,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:33:42,916 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2020-08-22 18:33:42,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 18:33:42,916 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2020-08-22 18:33:42,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 18:33:42,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:33:42,918 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:33:42,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 18:33:42,919 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:33:42,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:33:42,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1698410615, now seen corresponding path program 5 times [2020-08-22 18:33:42,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:33:42,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117985376] [2020-08-22 18:33:42,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:33:42,922 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:33:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:33:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:42,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:33:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-22 18:33:43,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117985376] [2020-08-22 18:33:43,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:33:43,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 18:33:43,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447870050] [2020-08-22 18:33:43,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 18:33:43,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:33:43,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 18:33:43,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:33:43,141 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand 8 states. [2020-08-22 18:33:43,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:33:43,277 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2020-08-22 18:33:43,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 18:33:43,277 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-22 18:33:43,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:33:43,279 INFO L225 Difference]: With dead ends: 74 [2020-08-22 18:33:43,279 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 18:33:43,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-22 18:33:43,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 18:33:43,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-22 18:33:43,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 18:33:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2020-08-22 18:33:43,292 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 90 [2020-08-22 18:33:43,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:33:43,293 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2020-08-22 18:33:43,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 18:33:43,293 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2020-08-22 18:33:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-08-22 18:33:43,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:33:43,296 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:33:43,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 18:33:43,296 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:33:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:33:43,297 INFO L82 PathProgramCache]: Analyzing trace with hash -376429873, now seen corresponding path program 6 times [2020-08-22 18:33:43,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:33:43,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694788498] [2020-08-22 18:33:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:33:43,299 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:33:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:33:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:33:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 18:33:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 18:33:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-08-22 18:33:43,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694788498] [2020-08-22 18:33:43,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:33:43,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:33:43,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120154256] [2020-08-22 18:33:43,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:33:43,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:33:43,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:33:43,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:33:43,725 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand 9 states. [2020-08-22 18:33:43,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:33:43,929 INFO L93 Difference]: Finished difference Result 170 states and 223 transitions. [2020-08-22 18:33:43,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:33:43,929 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2020-08-22 18:33:43,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:33:43,933 INFO L225 Difference]: With dead ends: 170 [2020-08-22 18:33:43,933 INFO L226 Difference]: Without dead ends: 164 [2020-08-22 18:33:43,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:33:43,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-22 18:33:43,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 146. [2020-08-22 18:33:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 18:33:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 195 transitions. [2020-08-22 18:33:43,959 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 195 transitions. Word has length 196 [2020-08-22 18:33:43,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:33:43,960 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 195 transitions. [2020-08-22 18:33:43,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:33:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 195 transitions. [2020-08-22 18:33:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-08-22 18:33:43,964 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:33:43,965 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:33:43,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 18:33:43,965 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:33:43,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:33:43,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1092378888, now seen corresponding path program 7 times [2020-08-22 18:33:43,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:33:43,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791861181] [2020-08-22 18:33:43,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:33:43,968 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:33:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:33:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:33:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 18:33:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:33:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2020-08-22 18:33:44,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791861181] [2020-08-22 18:33:44,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:33:44,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 18:33:44,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077025500] [2020-08-22 18:33:44,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 18:33:44,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:33:44,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 18:33:44,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:33:44,434 INFO L87 Difference]: Start difference. First operand 146 states and 195 transitions. Second operand 10 states. [2020-08-22 18:33:44,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:33:44,677 INFO L93 Difference]: Finished difference Result 342 states and 493 transitions. [2020-08-22 18:33:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 18:33:44,677 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 231 [2020-08-22 18:33:44,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:33:44,685 INFO L225 Difference]: With dead ends: 342 [2020-08-22 18:33:44,685 INFO L226 Difference]: Without dead ends: 336 [2020-08-22 18:33:44,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-22 18:33:44,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-22 18:33:44,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 312. [2020-08-22 18:33:44,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-22 18:33:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 458 transitions. [2020-08-22 18:33:44,759 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 458 transitions. Word has length 231 [2020-08-22 18:33:44,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:33:44,760 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 458 transitions. [2020-08-22 18:33:44,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 18:33:44,760 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 458 transitions. [2020-08-22 18:33:44,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-08-22 18:33:44,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:33:44,769 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 13, 13, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:33:44,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 18:33:44,770 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:33:44,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:33:44,771 INFO L82 PathProgramCache]: Analyzing trace with hash 897250737, now seen corresponding path program 8 times [2020-08-22 18:33:44,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:33:44,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915192995] [2020-08-22 18:33:44,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:33:44,776 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:33:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:33:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:44,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:33:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 18:33:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:33:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-22 18:33:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 18:33:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2020-08-22 18:33:45,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915192995] [2020-08-22 18:33:45,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:33:45,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 18:33:45,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440106675] [2020-08-22 18:33:45,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 18:33:45,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:33:45,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 18:33:45,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:33:45,797 INFO L87 Difference]: Start difference. First operand 312 states and 458 transitions. Second operand 11 states. [2020-08-22 18:33:46,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:33:46,125 INFO L93 Difference]: Finished difference Result 690 states and 1078 transitions. [2020-08-22 18:33:46,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 18:33:46,126 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 372 [2020-08-22 18:33:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:33:46,136 INFO L225 Difference]: With dead ends: 690 [2020-08-22 18:33:46,136 INFO L226 Difference]: Without dead ends: 684 [2020-08-22 18:33:46,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-08-22 18:33:46,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-08-22 18:33:46,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 654. [2020-08-22 18:33:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2020-08-22 18:33:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1036 transitions. [2020-08-22 18:33:46,222 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1036 transitions. Word has length 372 [2020-08-22 18:33:46,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:33:46,223 INFO L479 AbstractCegarLoop]: Abstraction has 654 states and 1036 transitions. [2020-08-22 18:33:46,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 18:33:46,224 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1036 transitions. [2020-08-22 18:33:46,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2020-08-22 18:33:46,239 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:33:46,240 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 54, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 21, 21, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:33:46,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 18:33:46,240 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:33:46,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:33:46,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2036115571, now seen corresponding path program 9 times [2020-08-22 18:33:46,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:33:46,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900793790] [2020-08-22 18:33:46,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:33:46,244 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:33:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:46,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:33:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:46,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:33:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:46,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:46,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:46,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 18:33:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:33:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-22 18:33:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 18:33:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-22 18:33:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 18:33:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:33:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:47,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2615 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 2222 trivial. 0 not checked. [2020-08-22 18:33:48,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900793790] [2020-08-22 18:33:48,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:33:48,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 18:33:48,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280065793] [2020-08-22 18:33:48,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 18:33:48,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:33:48,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 18:33:48,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-22 18:33:48,249 INFO L87 Difference]: Start difference. First operand 654 states and 1036 transitions. Second operand 12 states. [2020-08-22 18:33:48,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:33:48,714 INFO L93 Difference]: Finished difference Result 1390 states and 2329 transitions. [2020-08-22 18:33:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 18:33:48,714 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 601 [2020-08-22 18:33:48,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:33:48,745 INFO L225 Difference]: With dead ends: 1390 [2020-08-22 18:33:48,746 INFO L226 Difference]: Without dead ends: 1384 [2020-08-22 18:33:48,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-08-22 18:33:48,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-08-22 18:33:48,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1348. [2020-08-22 18:33:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1348 states. [2020-08-22 18:33:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2280 transitions. [2020-08-22 18:33:48,923 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2280 transitions. Word has length 601 [2020-08-22 18:33:48,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:33:48,925 INFO L479 AbstractCegarLoop]: Abstraction has 1348 states and 2280 transitions. [2020-08-22 18:33:48,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 18:33:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2280 transitions. [2020-08-22 18:33:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2020-08-22 18:33:48,963 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:33:48,964 INFO L422 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 34, 34, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:33:48,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 18:33:48,964 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:33:48,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:33:48,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1047272888, now seen corresponding path program 10 times [2020-08-22 18:33:48,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:33:48,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208442291] [2020-08-22 18:33:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:33:48,969 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:33:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:49,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:33:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:49,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:33:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:50,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:50,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:50,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 18:33:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:33:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-22 18:33:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 18:33:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-22 18:33:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:51,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 18:33:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:33:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2020-08-22 18:33:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 18:33:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:33:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-22 18:33:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 18:33:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 18:33:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:33:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 18:33:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:52,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 18:33:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:33:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6710 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6710 trivial. 0 not checked. [2020-08-22 18:33:54,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208442291] [2020-08-22 18:33:54,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:33:54,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-08-22 18:33:54,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409187632] [2020-08-22 18:33:54,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 18:33:54,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:33:54,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 18:33:54,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-08-22 18:33:54,165 INFO L87 Difference]: Start difference. First operand 1348 states and 2280 transitions. Second operand 28 states. [2020-08-22 18:33:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:33:56,503 INFO L93 Difference]: Finished difference Result 8062 states and 17360 transitions. [2020-08-22 18:33:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-08-22 18:33:56,504 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 971 [2020-08-22 18:33:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:33:56,511 INFO L225 Difference]: With dead ends: 8062 [2020-08-22 18:33:56,512 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 18:33:56,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1515, Invalid=4035, Unknown=0, NotChecked=0, Total=5550 [2020-08-22 18:33:56,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 18:33:56,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 18:33:56,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 18:33:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 18:33:56,682 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 971 [2020-08-22 18:33:56,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:33:56,683 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 18:33:56,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 18:33:56,683 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 18:33:56,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 18:33:56,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 18:33:56,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 18:34:50,936 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 290 DAG size of output: 43 [2020-08-22 18:34:56,520 WARN L193 SmtUtils]: Spent 5.43 s on a formula simplification. DAG size of input: 778 DAG size of output: 50 [2020-08-22 18:34:57,915 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 271 DAG size of output: 37 [2020-08-22 18:34:59,350 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 272 DAG size of output: 39 [2020-08-22 18:35:00,457 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 275 DAG size of output: 41 [2020-08-22 18:35:06,407 WARN L193 SmtUtils]: Spent 5.88 s on a formula simplification. DAG size of input: 818 DAG size of output: 62 [2020-08-22 18:35:11,763 WARN L193 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 778 DAG size of output: 50 [2020-08-22 18:35:13,272 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 289 DAG size of output: 43 [2020-08-22 18:35:13,408 INFO L264 CegarLoopResult]: At program point fibonacciFINAL(lines 14 22) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (<= 0 |fibonacci_#res|) (or (not (<= 1 |fibonacci_#in~n|)) (and (<= |fibonacci_#in~n| 2) (<= 1 |fibonacci_#res|)) (and (<= 13 |fibonacci_#res|) (<= |fibonacci_#in~n| 7)) (and (<= |fibonacci_#in~n| 6) (<= 8 |fibonacci_#res|)) (and (<= 3 |fibonacci_#res|) (<= |fibonacci_#in~n| 4)) (and (<= 5 |fibonacci_#res|) (<= |fibonacci_#in~n| 5)) (and (<= 21 |fibonacci_#res|) (<= |fibonacci_#in~n| 8)) (<= 34 |fibonacci_#res|) (and (<= |fibonacci_#in~n| 3) (<= 2 |fibonacci_#res|)))) [2020-08-22 18:35:13,408 INFO L271 CegarLoopResult]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2020-08-22 18:35:13,408 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (< 1 fibonacci_~n)) [2020-08-22 18:35:13,408 INFO L264 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: (and (or (and (<= 8 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 7)) (and (<= 3 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 5)) (and (<= 2 |fibonacci_#t~ret0|) (<= fibonacci_~n 4)) (and (<= |fibonacci_#in~n| 6) (<= 5 |fibonacci_#t~ret0|)) (and (<= 1 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 3)) (<= 13 |fibonacci_#t~ret0|)) (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= 21 |fibonacci_#t~ret0|) .cse0 (<= 3 |fibonacci_#in~n|)) (and (<= |fibonacci_#in~n| 8) .cse0 (< 1 fibonacci_~n))))) [2020-08-22 18:35:13,408 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= |fibonacci_#in~n| 1) (= fibonacci_~n |fibonacci_#in~n|) (< 0 fibonacci_~n)) [2020-08-22 18:35:13,410 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= 1 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 3) .cse0) (and (<= 21 |fibonacci_#t~ret0|) .cse0) (and (<= |fibonacci_#in~n| 6) (<= 5 |fibonacci_#t~ret0|) .cse0) (and .cse0 (<= 2 |fibonacci_#t~ret0|) (<= fibonacci_~n 4)) (and .cse0 (<= 8 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 7)) (and (<= |fibonacci_#in~n| 8) .cse0 (<= 13 |fibonacci_#t~ret0|)) (and .cse0 (<= 3 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 5)))) (< 1 fibonacci_~n)) [2020-08-22 18:35:13,411 INFO L264 CegarLoopResult]: At program point fibonacciEXIT(lines 14 22) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (<= 0 |fibonacci_#res|) (or (not (<= 1 |fibonacci_#in~n|)) (and (<= |fibonacci_#in~n| 2) (<= 1 |fibonacci_#res|)) (and (<= 13 |fibonacci_#res|) (<= |fibonacci_#in~n| 7)) (and (<= |fibonacci_#in~n| 6) (<= 8 |fibonacci_#res|)) (and (<= 3 |fibonacci_#res|) (<= |fibonacci_#in~n| 4)) (and (<= 5 |fibonacci_#res|) (<= |fibonacci_#in~n| 5)) (and (<= 21 |fibonacci_#res|) (<= |fibonacci_#in~n| 8)) (<= 34 |fibonacci_#res|) (and (<= |fibonacci_#in~n| 3) (<= 2 |fibonacci_#res|)))) [2020-08-22 18:35:13,411 INFO L264 CegarLoopResult]: At program point L17(lines 17 21) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (< 0 fibonacci_~n)) [2020-08-22 18:35:13,411 INFO L264 CegarLoopResult]: At program point L20-3(line 20) the Hoare annotation is: (and (let ((.cse2 (<= 1 |fibonacci_#t~ret0|)) (.cse0 (+ |fibonacci_#t~ret1| |fibonacci_#t~ret0|)) (.cse1 (= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= 13 .cse0) .cse1 (<= 8 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 7)) (and (<= |fibonacci_#in~n| 6) (<= 5 |fibonacci_#t~ret0|) .cse1 (<= 8 .cse0)) (and .cse1 (<= 5 .cse0) (<= 3 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 5)) (and (<= 2 .cse0) .cse2 (<= |fibonacci_#in~n| 3) .cse1) (and (<= 1 .cse0) (<= |fibonacci_#in~n| 2) .cse2 .cse1) (and (<= |fibonacci_#in~n| 8) .cse1 (<= 21 .cse0) (<= 13 |fibonacci_#t~ret0|)) (and .cse1 (<= 3 .cse0) (<= 2 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 4)) (and (<= 34 .cse0) (<= 21 |fibonacci_#t~ret0|) .cse1))) (< 1 fibonacci_~n)) [2020-08-22 18:35:13,411 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (<= |fibonacci_#in~n| 0)) [2020-08-22 18:35:13,411 INFO L264 CegarLoopResult]: At program point L20-4(line 20) the Hoare annotation is: (and (let ((.cse2 (<= 1 |fibonacci_#t~ret0|)) (.cse0 (+ |fibonacci_#t~ret1| |fibonacci_#t~ret0|)) (.cse1 (= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= 13 .cse0) .cse1 (<= 8 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 7)) (and (<= |fibonacci_#in~n| 6) (<= 5 |fibonacci_#t~ret0|) .cse1 (<= 8 .cse0)) (and .cse1 (<= 5 .cse0) (<= 3 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 5)) (and (<= 2 .cse0) .cse2 (<= |fibonacci_#in~n| 3) .cse1) (and (<= 1 .cse0) (<= |fibonacci_#in~n| 2) .cse2 .cse1) (and (<= |fibonacci_#in~n| 8) .cse1 (<= 21 .cse0) (<= 13 |fibonacci_#t~ret0|)) (and .cse1 (<= 3 .cse0) (<= 2 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 4)) (and (<= 34 .cse0) (<= 21 |fibonacci_#t~ret0|) .cse1))) (< 1 fibonacci_~n)) [2020-08-22 18:35:13,412 INFO L264 CegarLoopResult]: At program point L15(lines 15 21) the Hoare annotation is: (= fibonacci_~n |fibonacci_#in~n|) [2020-08-22 18:35:13,412 INFO L264 CegarLoopResult]: At program point L20-5(line 20) the Hoare annotation is: (let ((.cse0 (+ |fibonacci_#t~ret1| |fibonacci_#t~ret0|))) (and (let ((.cse1 (<= 1 |fibonacci_#t~ret0|))) (or (and (<= 5 |fibonacci_#res|) (<= 5 .cse0) (<= 3 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 5)) (and (<= 21 |fibonacci_#res|) (<= 21 .cse0) (<= 13 |fibonacci_#t~ret0|)) (and (<= 3 |fibonacci_#res|) (<= 3 .cse0) (<= 2 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 4)) (and (<= 2 .cse0) .cse1 (<= |fibonacci_#in~n| 3) (<= 2 |fibonacci_#res|)) (and (<= |fibonacci_#in~n| 6) (<= 5 |fibonacci_#t~ret0|) (<= 8 |fibonacci_#res|) (<= 8 .cse0)) (and (<= 13 .cse0) (<= 13 |fibonacci_#res|) (<= 8 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 7)) (and (<= 1 .cse0) (<= |fibonacci_#in~n| 2) .cse1 (<= 1 |fibonacci_#res|)))) (let ((.cse2 (= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= 34 .cse0) (<= 21 |fibonacci_#t~ret0|) .cse2 (<= 3 |fibonacci_#in~n|) (<= 34 |fibonacci_#res|)) (and (<= |fibonacci_#in~n| 8) .cse2 (< 1 fibonacci_~n)))))) [2020-08-22 18:35:13,412 INFO L264 CegarLoopResult]: At program point L20-6(line 20) the Hoare annotation is: (and (or (and (<= 13 |fibonacci_#res|) (<= |fibonacci_#in~n| 7)) (and (<= |fibonacci_#in~n| 2) (<= 1 |fibonacci_#res|)) (and (<= |fibonacci_#in~n| 6) (<= 8 |fibonacci_#res|)) (and (<= 3 |fibonacci_#res|) (<= |fibonacci_#in~n| 4)) (and (<= 5 |fibonacci_#res|) (<= |fibonacci_#in~n| 5)) (and (<= 21 |fibonacci_#res|) (<= |fibonacci_#in~n| 8)) (<= 34 |fibonacci_#res|) (and (<= |fibonacci_#in~n| 3) (<= 2 |fibonacci_#res|))) (= fibonacci_~n |fibonacci_#in~n|) (< 1 fibonacci_~n)) [2020-08-22 18:35:13,412 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 18:35:13,412 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 18:35:13,412 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 18:35:13,413 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 18:35:13,413 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 18:35:13,413 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 18:35:13,413 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-08-22 18:35:13,413 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) the Hoare annotation is: false [2020-08-22 18:35:13,413 INFO L264 CegarLoopResult]: At program point L31(lines 31 35) the Hoare annotation is: (or (<= 34 main_~result~0) (<= main_~x~0 8)) [2020-08-22 18:35:13,414 INFO L271 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-08-22 18:35:13,415 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 36) the Hoare annotation is: true [2020-08-22 18:35:13,415 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (or (<= 34 |main_#t~ret3|) (<= main_~x~0 8)) [2020-08-22 18:35:13,415 INFO L271 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-08-22 18:35:13,415 INFO L264 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: (or (<= 34 |main_#t~ret3|) (<= main_~x~0 8)) [2020-08-22 18:35:13,415 INFO L271 CegarLoopResult]: At program point L27(lines 27 29) the Hoare annotation is: true [2020-08-22 18:35:13,416 INFO L264 CegarLoopResult]: At program point L30-3(line 30) the Hoare annotation is: (or (<= main_~x~0 8) (and (<= 34 main_~result~0) (<= 34 |main_#t~ret3|))) [2020-08-22 18:35:13,416 INFO L271 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-08-22 18:35:13,416 INFO L271 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-08-22 18:35:13,416 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 25 36) the Hoare annotation is: true [2020-08-22 18:35:13,416 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 25 36) the Hoare annotation is: true [2020-08-22 18:35:13,417 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: false [2020-08-22 18:35:13,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:35:13 BoogieIcfgContainer [2020-08-22 18:35:13,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:35:13,453 INFO L168 Benchmark]: Toolchain (without parser) took 93785.94 ms. Allocated memory was 144.7 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 100.1 MB in the beginning and 539.5 MB in the end (delta: -439.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2020-08-22 18:35:13,454 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:35:13,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.39 ms. Allocated memory is still 144.7 MB. Free memory was 99.9 MB in the beginning and 90.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:35:13,456 INFO L168 Benchmark]: Boogie Preprocessor took 114.83 ms. Allocated memory was 144.7 MB in the beginning and 199.8 MB in the end (delta: 55.1 MB). Free memory was 90.5 MB in the beginning and 178.5 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:35:13,465 INFO L168 Benchmark]: RCFGBuilder took 249.40 ms. Allocated memory is still 199.8 MB. Free memory was 178.5 MB in the beginning and 165.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:35:13,467 INFO L168 Benchmark]: TraceAbstraction took 93162.41 ms. Allocated memory was 199.8 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 165.1 MB in the beginning and 539.5 MB in the end (delta: -374.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2020-08-22 18:35:13,475 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.39 ms. Allocated memory is still 144.7 MB. Free memory was 99.9 MB in the beginning and 90.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.83 ms. Allocated memory was 144.7 MB in the beginning and 199.8 MB in the end (delta: 55.1 MB). Free memory was 90.5 MB in the beginning and 178.5 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 249.40 ms. Allocated memory is still 199.8 MB. Free memory was 178.5 MB in the beginning and 165.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 93162.41 ms. Allocated memory was 199.8 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 165.1 MB in the beginning and 539.5 MB in the end (delta: -374.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 14]: Procedure Contract for fibonacci Derived contract for procedure fibonacci: (n == \old(n) && 0 <= \result) && ((((((((!(1 <= \old(n)) || (\old(n) <= 2 && 1 <= \result)) || (13 <= \result && \old(n) <= 7)) || (\old(n) <= 6 && 8 <= \result)) || (3 <= \result && \old(n) <= 4)) || (5 <= \result && \old(n) <= 5)) || (21 <= \result && \old(n) <= 8)) || 34 <= \result) || (\old(n) <= 3 && 2 <= \result)) - ProcedureContractResult [Line: 25]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.2s, OverallIterations: 13, TraceHistogramMax: 109, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 76.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 473 SDtfs, 600 SDslu, 1744 SDs, 0 SdLazy, 1655 SolverSat, 417 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1054 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1348occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 137 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 35 LocationsWithAnnotation, 11291 PreInvPairs, 117213 NumberOfFragments, 782 HoareAnnotationTreeSize, 11291 FomulaSimplifications, 3991431 FormulaSimplificationTreeSizeReduction, 52.6s HoareSimplificationTime, 35 FomulaSimplificationsInter, 198359 FormulaSimplificationTreeSizeReductionInter, 23.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...