/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:54:21,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:54:21,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:54:21,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:54:21,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:54:21,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:54:21,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:54:21,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:54:21,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:54:21,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:54:21,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:54:21,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:54:21,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:54:21,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:54:21,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:54:21,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:54:21,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:54:21,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:54:21,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:54:21,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:54:21,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:54:21,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:54:21,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:54:21,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:54:21,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 21:54:21,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:54:21,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:54:21,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:54:21,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 21:54:21,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:54:21,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:54:21,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:54:21,208 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:54:21,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:54:21,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:54:21,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:54:21,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:54:21,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:54:21,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:54:21,210 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:54:21,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:54:21,211 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:54:21,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:54:21,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:54:21,212 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:54:21,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:54:21,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:54:21,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:54:21,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:54:21,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:54:21,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:54:21,213 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 21:54:21,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:54:21,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:54:21,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:54:21,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:54:21,674 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:54:21,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-09-04 21:54:21,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4063ce39f/e51b6ab9be7746c6b8ae539bdba5b310/FLAGf19412e70 [2020-09-04 21:54:22,345 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:54:22,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-09-04 21:54:22,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4063ce39f/e51b6ab9be7746c6b8ae539bdba5b310/FLAGf19412e70 [2020-09-04 21:54:22,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4063ce39f/e51b6ab9be7746c6b8ae539bdba5b310 [2020-09-04 21:54:22,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:54:22,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:54:22,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:54:22,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:54:22,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:54:22,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:54:22" (1/1) ... [2020-09-04 21:54:22,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21be1380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:54:22, skipping insertion in model container [2020-09-04 21:54:22,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:54:22" (1/1) ... [2020-09-04 21:54:22,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:54:22,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:54:22,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:54:22,968 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:54:22,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:54:23,006 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:54:23,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:54:23 WrapperNode [2020-09-04 21:54:23,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:54:23,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:54:23,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:54:23,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:54:23,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:54:23" (1/1) ... [2020-09-04 21:54:23,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:54:23" (1/1) ... [2020-09-04 21:54:23,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:54:23" (1/1) ... [2020-09-04 21:54:23,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:54:23" (1/1) ... [2020-09-04 21:54:23,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:54:23" (1/1) ... [2020-09-04 21:54:23,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:54:23" (1/1) ... [2020-09-04 21:54:23,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:54:23" (1/1) ... [2020-09-04 21:54:23,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:54:23,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:54:23,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:54:23,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:54:23,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:54:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:54:23,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:54:23,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:54:23,251 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-04 21:54:23,251 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-04 21:54:23,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:54:23,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 21:54:23,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:54:23,251 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-04 21:54:23,252 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-04 21:54:23,252 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:54:23,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:54:23,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:54:23,520 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:54:23,521 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 21:54:23,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:54:23 BoogieIcfgContainer [2020-09-04 21:54:23,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:54:23,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:54:23,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:54:23,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:54:23,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:54:22" (1/3) ... [2020-09-04 21:54:23,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698c24a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:54:23, skipping insertion in model container [2020-09-04 21:54:23,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:54:23" (2/3) ... [2020-09-04 21:54:23,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698c24a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:54:23, skipping insertion in model container [2020-09-04 21:54:23,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:54:23" (3/3) ... [2020-09-04 21:54:23,545 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2020-09-04 21:54:23,560 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:54:23,573 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:54:23,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:54:23,640 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:54:23,640 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:54:23,640 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:54:23,641 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:54:23,641 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:54:23,641 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:54:23,641 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:54:23,641 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:54:23,664 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-04 21:54:23,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 21:54:23,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:23,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:23,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:23,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-04 21:54:23,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:23,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381569260] [2020-09-04 21:54:23,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:23,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:54:24,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381569260] [2020-09-04 21:54:24,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:54:24,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 21:54:24,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245961895] [2020-09-04 21:54:24,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 21:54:24,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:24,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 21:54:24,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 21:54:24,041 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-04 21:54:24,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:24,205 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-04 21:54:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 21:54:24,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-04 21:54:24,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:24,224 INFO L225 Difference]: With dead ends: 58 [2020-09-04 21:54:24,225 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 21:54:24,230 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 [2020-09-04 21:54:24,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 21:54:24,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-04 21:54:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-04 21:54:24,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-04 21:54:24,306 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-04 21:54:24,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:24,307 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-04 21:54:24,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 21:54:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-04 21:54:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 21:54:24,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:24,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:24,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:54:24,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:24,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:24,312 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-04 21:54:24,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:24,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901906029] [2020-09-04 21:54:24,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:54:24,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901906029] [2020-09-04 21:54:24,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:54:24,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 21:54:24,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794268073] [2020-09-04 21:54:24,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 21:54:24,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:24,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 21:54:24,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 21:54:24,393 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-04 21:54:24,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:24,473 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-04 21:54:24,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 21:54:24,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-04 21:54:24,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:24,476 INFO L225 Difference]: With dead ends: 50 [2020-09-04 21:54:24,476 INFO L226 Difference]: Without dead ends: 44 [2020-09-04 21:54:24,478 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 [2020-09-04 21:54:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-04 21:54:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-04 21:54:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-04 21:54:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-04 21:54:24,493 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-04 21:54:24,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:24,494 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-04 21:54:24,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 21:54:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-04 21:54:24,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 21:54:24,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:24,497 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:24,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:54:24,497 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:24,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:24,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-04 21:54:24,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:24,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441083190] [2020-09-04 21:54:24,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 21:54:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 21:54:24,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441083190] [2020-09-04 21:54:24,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:24,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 21:54:24,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103895831] [2020-09-04 21:54:24,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 21:54:24,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:24,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 21:54:24,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-04 21:54:24,684 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-04 21:54:24,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:24,797 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-04 21:54:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 21:54:24,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-04 21:54:24,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:24,800 INFO L225 Difference]: With dead ends: 82 [2020-09-04 21:54:24,800 INFO L226 Difference]: Without dead ends: 46 [2020-09-04 21:54:24,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 21:54:24,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-04 21:54:24,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-04 21:54:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-04 21:54:24,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-04 21:54:24,818 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-04 21:54:24,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:24,819 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-04 21:54:24,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 21:54:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-04 21:54:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 21:54:24,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:24,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:24,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 21:54:24,822 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-04 21:54:24,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:24,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180795777] [2020-09-04 21:54:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 21:54:24,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180795777] [2020-09-04 21:54:24,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:24,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 21:54:24,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737464852] [2020-09-04 21:54:24,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 21:54:25,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:25,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 21:54:25,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 21:54:25,001 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-09-04 21:54:25,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:25,260 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2020-09-04 21:54:25,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 21:54:25,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-04 21:54:25,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:25,263 INFO L225 Difference]: With dead ends: 74 [2020-09-04 21:54:25,264 INFO L226 Difference]: Without dead ends: 68 [2020-09-04 21:54:25,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 21:54:25,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-04 21:54:25,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-09-04 21:54:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-04 21:54:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2020-09-04 21:54:25,283 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 34 [2020-09-04 21:54:25,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:25,284 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2020-09-04 21:54:25,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 21:54:25,284 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2020-09-04 21:54:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-04 21:54:25,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:25,287 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:25,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 21:54:25,288 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:25,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:25,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1875452576, now seen corresponding path program 1 times [2020-09-04 21:54:25,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:25,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420767417] [2020-09-04 21:54:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 21:54:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 21:54:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 21:54:25,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420767417] [2020-09-04 21:54:25,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:25,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-04 21:54:25,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667345376] [2020-09-04 21:54:25,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 21:54:25,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:25,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 21:54:25,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 21:54:25,428 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand 6 states. [2020-09-04 21:54:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:25,514 INFO L93 Difference]: Finished difference Result 130 states and 178 transitions. [2020-09-04 21:54:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 21:54:25,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-09-04 21:54:25,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:25,517 INFO L225 Difference]: With dead ends: 130 [2020-09-04 21:54:25,517 INFO L226 Difference]: Without dead ends: 70 [2020-09-04 21:54:25,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 21:54:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-04 21:54:25,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-04 21:54:25,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-04 21:54:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2020-09-04 21:54:25,541 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 50 [2020-09-04 21:54:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:25,542 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2020-09-04 21:54:25,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 21:54:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2020-09-04 21:54:25,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-04 21:54:25,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:25,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:25,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 21:54:25,552 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:25,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:25,554 INFO L82 PathProgramCache]: Analyzing trace with hash 104828256, now seen corresponding path program 1 times [2020-09-04 21:54:25,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:25,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781110671] [2020-09-04 21:54:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-04 21:54:25,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781110671] [2020-09-04 21:54:25,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:25,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-04 21:54:25,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861536059] [2020-09-04 21:54:25,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 21:54:25,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:25,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 21:54:25,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 21:54:25,736 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand 8 states. [2020-09-04 21:54:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:25,854 INFO L93 Difference]: Finished difference Result 142 states and 197 transitions. [2020-09-04 21:54:25,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 21:54:25,854 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-04 21:54:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:25,857 INFO L225 Difference]: With dead ends: 142 [2020-09-04 21:54:25,857 INFO L226 Difference]: Without dead ends: 78 [2020-09-04 21:54:25,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-04 21:54:25,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-04 21:54:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2020-09-04 21:54:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-04 21:54:25,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2020-09-04 21:54:25,877 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 51 [2020-09-04 21:54:25,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:25,877 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2020-09-04 21:54:25,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 21:54:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2020-09-04 21:54:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-04 21:54:25,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:25,880 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:25,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 21:54:25,881 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:25,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:25,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 1 times [2020-09-04 21:54:25,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:25,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583575829] [2020-09-04 21:54:25,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:25,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 21:54:26,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583575829] [2020-09-04 21:54:26,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:26,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-04 21:54:26,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156321808] [2020-09-04 21:54:26,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 21:54:26,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:26,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 21:54:26,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 21:54:26,022 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand 8 states. [2020-09-04 21:54:26,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:26,245 INFO L93 Difference]: Finished difference Result 118 states and 158 transitions. [2020-09-04 21:54:26,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 21:54:26,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-04 21:54:26,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:26,250 INFO L225 Difference]: With dead ends: 118 [2020-09-04 21:54:26,250 INFO L226 Difference]: Without dead ends: 112 [2020-09-04 21:54:26,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-04 21:54:26,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-04 21:54:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2020-09-04 21:54:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-04 21:54:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 145 transitions. [2020-09-04 21:54:26,275 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 145 transitions. Word has length 52 [2020-09-04 21:54:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:26,275 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 145 transitions. [2020-09-04 21:54:26,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 21:54:26,275 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 145 transitions. [2020-09-04 21:54:26,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-04 21:54:26,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:26,278 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:26,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 21:54:26,278 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:26,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:26,279 INFO L82 PathProgramCache]: Analyzing trace with hash -521446491, now seen corresponding path program 1 times [2020-09-04 21:54:26,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:26,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731071708] [2020-09-04 21:54:26,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 21:54:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-04 21:54:26,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731071708] [2020-09-04 21:54:26,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:26,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-04 21:54:26,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948554690] [2020-09-04 21:54:26,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 21:54:26,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:26,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 21:54:26,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 21:54:26,466 INFO L87 Difference]: Start difference. First operand 106 states and 145 transitions. Second operand 8 states. [2020-09-04 21:54:26,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:26,622 INFO L93 Difference]: Finished difference Result 227 states and 348 transitions. [2020-09-04 21:54:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 21:54:26,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-04 21:54:26,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:26,625 INFO L225 Difference]: With dead ends: 227 [2020-09-04 21:54:26,625 INFO L226 Difference]: Without dead ends: 127 [2020-09-04 21:54:26,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-04 21:54:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-04 21:54:26,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2020-09-04 21:54:26,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-04 21:54:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 161 transitions. [2020-09-04 21:54:26,655 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 161 transitions. Word has length 69 [2020-09-04 21:54:26,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:26,656 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 161 transitions. [2020-09-04 21:54:26,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 21:54:26,656 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 161 transitions. [2020-09-04 21:54:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-04 21:54:26,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:26,659 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:26,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 21:54:26,659 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:26,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:26,660 INFO L82 PathProgramCache]: Analyzing trace with hash -439633211, now seen corresponding path program 1 times [2020-09-04 21:54:26,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:26,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851243756] [2020-09-04 21:54:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-04 21:54:26,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851243756] [2020-09-04 21:54:26,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:26,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-04 21:54:26,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054198665] [2020-09-04 21:54:26,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 21:54:26,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:26,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 21:54:26,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-04 21:54:26,887 INFO L87 Difference]: Start difference. First operand 115 states and 161 transitions. Second operand 10 states. [2020-09-04 21:54:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:27,153 INFO L93 Difference]: Finished difference Result 257 states and 400 transitions. [2020-09-04 21:54:27,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 21:54:27,154 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-09-04 21:54:27,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:27,156 INFO L225 Difference]: With dead ends: 257 [2020-09-04 21:54:27,157 INFO L226 Difference]: Without dead ends: 151 [2020-09-04 21:54:27,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-04 21:54:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-04 21:54:27,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 133. [2020-09-04 21:54:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-09-04 21:54:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2020-09-04 21:54:27,187 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 70 [2020-09-04 21:54:27,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:27,188 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2020-09-04 21:54:27,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 21:54:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2020-09-04 21:54:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-04 21:54:27,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:27,191 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:27,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 21:54:27,192 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:27,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:27,193 INFO L82 PathProgramCache]: Analyzing trace with hash 307755032, now seen corresponding path program 2 times [2020-09-04 21:54:27,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:27,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322660869] [2020-09-04 21:54:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:27,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:27,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:27,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:27,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:27,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:27,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:27,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:27,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:27,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:27,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:27,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:27,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 36 proven. 59 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-09-04 21:54:27,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322660869] [2020-09-04 21:54:27,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:27,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-04 21:54:27,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638340681] [2020-09-04 21:54:27,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 21:54:27,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:27,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 21:54:27,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-04 21:54:27,494 INFO L87 Difference]: Start difference. First operand 133 states and 191 transitions. Second operand 12 states. [2020-09-04 21:54:28,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:28,064 INFO L93 Difference]: Finished difference Result 265 states and 420 transitions. [2020-09-04 21:54:28,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 21:54:28,065 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2020-09-04 21:54:28,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:28,070 INFO L225 Difference]: With dead ends: 265 [2020-09-04 21:54:28,070 INFO L226 Difference]: Without dead ends: 116 [2020-09-04 21:54:28,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-09-04 21:54:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-04 21:54:28,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 95. [2020-09-04 21:54:28,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-04 21:54:28,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2020-09-04 21:54:28,098 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 105 [2020-09-04 21:54:28,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:28,098 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2020-09-04 21:54:28,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 21:54:28,099 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2020-09-04 21:54:28,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-04 21:54:28,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:28,101 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:28,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 21:54:28,102 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:28,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:28,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1534580400, now seen corresponding path program 1 times [2020-09-04 21:54:28,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:28,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827672059] [2020-09-04 21:54:28,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-04 21:54:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 50 proven. 67 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-09-04 21:54:28,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827672059] [2020-09-04 21:54:28,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:28,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-04 21:54:28,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950492772] [2020-09-04 21:54:28,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 21:54:28,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:28,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 21:54:28,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-04 21:54:28,452 INFO L87 Difference]: Start difference. First operand 95 states and 117 transitions. Second operand 10 states. [2020-09-04 21:54:28,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:28,731 INFO L93 Difference]: Finished difference Result 193 states and 255 transitions. [2020-09-04 21:54:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 21:54:28,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 123 [2020-09-04 21:54:28,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:28,734 INFO L225 Difference]: With dead ends: 193 [2020-09-04 21:54:28,734 INFO L226 Difference]: Without dead ends: 105 [2020-09-04 21:54:28,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-04 21:54:28,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-04 21:54:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-09-04 21:54:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-04 21:54:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2020-09-04 21:54:28,753 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 123 [2020-09-04 21:54:28,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:28,753 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2020-09-04 21:54:28,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 21:54:28,754 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2020-09-04 21:54:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-04 21:54:28,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:28,756 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:28,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 21:54:28,756 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:28,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:28,757 INFO L82 PathProgramCache]: Analyzing trace with hash 822116120, now seen corresponding path program 2 times [2020-09-04 21:54:28,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:28,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919175736] [2020-09-04 21:54:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:28,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 21:54:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 72 proven. 111 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-09-04 21:54:29,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919175736] [2020-09-04 21:54:29,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:29,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-04 21:54:29,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970033698] [2020-09-04 21:54:29,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 21:54:29,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:29,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 21:54:29,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-04 21:54:29,119 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand 12 states. [2020-09-04 21:54:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:29,612 INFO L93 Difference]: Finished difference Result 241 states and 326 transitions. [2020-09-04 21:54:29,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 21:54:29,613 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 140 [2020-09-04 21:54:29,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:29,616 INFO L225 Difference]: With dead ends: 241 [2020-09-04 21:54:29,616 INFO L226 Difference]: Without dead ends: 141 [2020-09-04 21:54:29,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-09-04 21:54:29,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-09-04 21:54:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123. [2020-09-04 21:54:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-04 21:54:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 149 transitions. [2020-09-04 21:54:29,636 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 149 transitions. Word has length 140 [2020-09-04 21:54:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:29,637 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 149 transitions. [2020-09-04 21:54:29,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 21:54:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 149 transitions. [2020-09-04 21:54:29,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-04 21:54:29,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:29,639 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:29,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 21:54:29,640 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:29,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:29,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1260071360, now seen corresponding path program 2 times [2020-09-04 21:54:29,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:29,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245171924] [2020-09-04 21:54:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 26 proven. 126 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-09-04 21:54:29,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245171924] [2020-09-04 21:54:29,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:29,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-04 21:54:29,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423283180] [2020-09-04 21:54:29,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 21:54:29,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:29,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 21:54:29,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-04 21:54:29,914 INFO L87 Difference]: Start difference. First operand 123 states and 149 transitions. Second operand 10 states. [2020-09-04 21:54:30,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:30,227 INFO L93 Difference]: Finished difference Result 244 states and 326 transitions. [2020-09-04 21:54:30,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 21:54:30,228 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 140 [2020-09-04 21:54:30,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:30,232 INFO L225 Difference]: With dead ends: 244 [2020-09-04 21:54:30,232 INFO L226 Difference]: Without dead ends: 238 [2020-09-04 21:54:30,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-09-04 21:54:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-04 21:54:30,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 213. [2020-09-04 21:54:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-04 21:54:30,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 287 transitions. [2020-09-04 21:54:30,266 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 287 transitions. Word has length 140 [2020-09-04 21:54:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:30,266 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 287 transitions. [2020-09-04 21:54:30,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 21:54:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 287 transitions. [2020-09-04 21:54:30,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-04 21:54:30,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:30,270 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:30,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 21:54:30,271 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:30,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:30,271 INFO L82 PathProgramCache]: Analyzing trace with hash -88380307, now seen corresponding path program 3 times [2020-09-04 21:54:30,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:30,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333707086] [2020-09-04 21:54:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 179 proven. 163 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-09-04 21:54:30,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333707086] [2020-09-04 21:54:30,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:30,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-04 21:54:30,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6725337] [2020-09-04 21:54:30,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 21:54:30,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:30,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 21:54:30,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-09-04 21:54:30,842 INFO L87 Difference]: Start difference. First operand 213 states and 287 transitions. Second operand 14 states. [2020-09-04 21:54:31,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:31,391 INFO L93 Difference]: Finished difference Result 470 states and 677 transitions. [2020-09-04 21:54:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 21:54:31,392 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 193 [2020-09-04 21:54:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:31,397 INFO L225 Difference]: With dead ends: 470 [2020-09-04 21:54:31,397 INFO L226 Difference]: Without dead ends: 257 [2020-09-04 21:54:31,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2020-09-04 21:54:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-04 21:54:31,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 233. [2020-09-04 21:54:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-09-04 21:54:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 310 transitions. [2020-09-04 21:54:31,442 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 310 transitions. Word has length 193 [2020-09-04 21:54:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:31,442 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 310 transitions. [2020-09-04 21:54:31,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 21:54:31,443 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 310 transitions. [2020-09-04 21:54:31,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-09-04 21:54:31,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:31,450 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 18, 18, 17, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:31,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 21:54:31,450 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:31,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:31,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1293350858, now seen corresponding path program 4 times [2020-09-04 21:54:31,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:31,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051458515] [2020-09-04 21:54:31,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:31,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 21:54:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2292 backedges. 199 proven. 672 refuted. 0 times theorem prover too weak. 1421 trivial. 0 not checked. [2020-09-04 21:54:32,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051458515] [2020-09-04 21:54:32,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:32,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-04 21:54:32,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790881857] [2020-09-04 21:54:32,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 21:54:32,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:32,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 21:54:32,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-09-04 21:54:32,424 INFO L87 Difference]: Start difference. First operand 233 states and 310 transitions. Second operand 14 states. [2020-09-04 21:54:33,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:33,340 INFO L93 Difference]: Finished difference Result 541 states and 798 transitions. [2020-09-04 21:54:33,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 21:54:33,341 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 351 [2020-09-04 21:54:33,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:33,347 INFO L225 Difference]: With dead ends: 541 [2020-09-04 21:54:33,348 INFO L226 Difference]: Without dead ends: 308 [2020-09-04 21:54:33,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2020-09-04 21:54:33,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-09-04 21:54:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 269. [2020-09-04 21:54:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-09-04 21:54:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 359 transitions. [2020-09-04 21:54:33,394 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 359 transitions. Word has length 351 [2020-09-04 21:54:33,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:33,395 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 359 transitions. [2020-09-04 21:54:33,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 21:54:33,395 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 359 transitions. [2020-09-04 21:54:33,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-04 21:54:33,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:33,401 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:33,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 21:54:33,401 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:33,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:33,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1117162661, now seen corresponding path program 5 times [2020-09-04 21:54:33,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:33,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852698973] [2020-09-04 21:54:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 60 proven. 311 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2020-09-04 21:54:33,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852698973] [2020-09-04 21:54:33,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:33,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-04 21:54:33,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993323805] [2020-09-04 21:54:33,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 21:54:33,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:33,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 21:54:33,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-04 21:54:33,945 INFO L87 Difference]: Start difference. First operand 269 states and 359 transitions. Second operand 11 states. [2020-09-04 21:54:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:34,347 INFO L93 Difference]: Finished difference Result 530 states and 743 transitions. [2020-09-04 21:54:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 21:54:34,347 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 228 [2020-09-04 21:54:34,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:34,372 INFO L225 Difference]: With dead ends: 530 [2020-09-04 21:54:34,375 INFO L226 Difference]: Without dead ends: 524 [2020-09-04 21:54:34,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-09-04 21:54:34,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-09-04 21:54:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 499. [2020-09-04 21:54:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-09-04 21:54:34,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 696 transitions. [2020-09-04 21:54:34,445 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 696 transitions. Word has length 228 [2020-09-04 21:54:34,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:34,446 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 696 transitions. [2020-09-04 21:54:34,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 21:54:34,446 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 696 transitions. [2020-09-04 21:54:34,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-09-04 21:54:34,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:34,453 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 18, 18, 16, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:34,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 21:54:34,454 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:34,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:34,454 INFO L82 PathProgramCache]: Analyzing trace with hash -184396701, now seen corresponding path program 6 times [2020-09-04 21:54:34,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:34,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684384441] [2020-09-04 21:54:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 21:54:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:34,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 21:54:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2288 backedges. 226 proven. 437 refuted. 0 times theorem prover too weak. 1625 trivial. 0 not checked. [2020-09-04 21:54:35,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684384441] [2020-09-04 21:54:35,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:35,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-04 21:54:35,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107045154] [2020-09-04 21:54:35,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 21:54:35,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:35,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 21:54:35,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-04 21:54:35,281 INFO L87 Difference]: Start difference. First operand 499 states and 696 transitions. Second operand 11 states. [2020-09-04 21:54:35,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:35,602 INFO L93 Difference]: Finished difference Result 987 states and 1429 transitions. [2020-09-04 21:54:35,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 21:54:35,603 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 351 [2020-09-04 21:54:35,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:35,611 INFO L225 Difference]: With dead ends: 987 [2020-09-04 21:54:35,612 INFO L226 Difference]: Without dead ends: 501 [2020-09-04 21:54:35,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-09-04 21:54:35,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-09-04 21:54:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 489. [2020-09-04 21:54:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-09-04 21:54:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 671 transitions. [2020-09-04 21:54:35,672 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 671 transitions. Word has length 351 [2020-09-04 21:54:35,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:35,673 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 671 transitions. [2020-09-04 21:54:35,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 21:54:35,673 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 671 transitions. [2020-09-04 21:54:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-09-04 21:54:35,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:35,681 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 17, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:35,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 21:54:35,682 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:35,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:35,682 INFO L82 PathProgramCache]: Analyzing trace with hash 549243331, now seen corresponding path program 7 times [2020-09-04 21:54:35,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:35,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214550566] [2020-09-04 21:54:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:35,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 21:54:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2534 backedges. 130 proven. 672 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2020-09-04 21:54:36,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214550566] [2020-09-04 21:54:36,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:36,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-04 21:54:36,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956964162] [2020-09-04 21:54:36,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 21:54:36,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:36,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 21:54:36,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-04 21:54:36,727 INFO L87 Difference]: Start difference. First operand 489 states and 671 transitions. Second operand 12 states. [2020-09-04 21:54:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:37,185 INFO L93 Difference]: Finished difference Result 881 states and 1252 transitions. [2020-09-04 21:54:37,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 21:54:37,186 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 369 [2020-09-04 21:54:37,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:37,200 INFO L225 Difference]: With dead ends: 881 [2020-09-04 21:54:37,200 INFO L226 Difference]: Without dead ends: 875 [2020-09-04 21:54:37,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-09-04 21:54:37,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2020-09-04 21:54:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 846. [2020-09-04 21:54:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-09-04 21:54:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1202 transitions. [2020-09-04 21:54:37,312 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1202 transitions. Word has length 369 [2020-09-04 21:54:37,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:37,313 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1202 transitions. [2020-09-04 21:54:37,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 21:54:37,313 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1202 transitions. [2020-09-04 21:54:37,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2020-09-04 21:54:37,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:37,369 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 42, 40, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 17, 17, 15, 15, 11, 11, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:37,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 21:54:37,369 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:37,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:37,370 INFO L82 PathProgramCache]: Analyzing trace with hash -775988945, now seen corresponding path program 8 times [2020-09-04 21:54:37,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:37,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258176867] [2020-09-04 21:54:37,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:37,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:37,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 21:54:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:38,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-09-04 21:54:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 21:54:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:39,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:40,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:40,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:40,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:40,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-09-04 21:54:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:40,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:40,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:40,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:40,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 16165 backedges. 815 proven. 3051 refuted. 0 times theorem prover too weak. 12299 trivial. 0 not checked. [2020-09-04 21:54:40,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258176867] [2020-09-04 21:54:40,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:40,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-04 21:54:40,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384496871] [2020-09-04 21:54:40,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 21:54:40,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:40,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 21:54:40,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-09-04 21:54:40,967 INFO L87 Difference]: Start difference. First operand 846 states and 1202 transitions. Second operand 18 states. [2020-09-04 21:54:42,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:42,187 INFO L93 Difference]: Finished difference Result 1414 states and 2190 transitions. [2020-09-04 21:54:42,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-04 21:54:42,188 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 898 [2020-09-04 21:54:42,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:42,198 INFO L225 Difference]: With dead ends: 1414 [2020-09-04 21:54:42,199 INFO L226 Difference]: Without dead ends: 513 [2020-09-04 21:54:42,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=250, Invalid=1472, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 21:54:42,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-09-04 21:54:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 421. [2020-09-04 21:54:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-09-04 21:54:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 593 transitions. [2020-09-04 21:54:42,272 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 593 transitions. Word has length 898 [2020-09-04 21:54:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:42,273 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 593 transitions. [2020-09-04 21:54:42,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 21:54:42,273 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 593 transitions. [2020-09-04 21:54:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-09-04 21:54:42,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:42,280 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 23, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 9, 9, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:42,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 21:54:42,281 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:42,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:42,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1921101036, now seen corresponding path program 9 times [2020-09-04 21:54:42,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:42,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929892767] [2020-09-04 21:54:42,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:42,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:42,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:42,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:42,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:42,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:42,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:42,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 21:54:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-09-04 21:54:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5013 backedges. 552 proven. 1134 refuted. 0 times theorem prover too weak. 3327 trivial. 0 not checked. [2020-09-04 21:54:43,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929892767] [2020-09-04 21:54:43,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:43,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-04 21:54:43,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897567848] [2020-09-04 21:54:43,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-04 21:54:43,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:43,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-04 21:54:43,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-09-04 21:54:43,975 INFO L87 Difference]: Start difference. First operand 421 states and 593 transitions. Second operand 16 states. [2020-09-04 21:54:44,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:44,813 INFO L93 Difference]: Finished difference Result 925 states and 1405 transitions. [2020-09-04 21:54:44,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 21:54:44,814 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 510 [2020-09-04 21:54:44,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:44,823 INFO L225 Difference]: With dead ends: 925 [2020-09-04 21:54:44,824 INFO L226 Difference]: Without dead ends: 518 [2020-09-04 21:54:44,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2020-09-04 21:54:44,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-09-04 21:54:44,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 469. [2020-09-04 21:54:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-09-04 21:54:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 652 transitions. [2020-09-04 21:54:44,893 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 652 transitions. Word has length 510 [2020-09-04 21:54:44,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:44,894 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 652 transitions. [2020-09-04 21:54:44,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-04 21:54:44,894 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 652 transitions. [2020-09-04 21:54:44,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-09-04 21:54:44,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:44,899 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 23, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 9, 9, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:44,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 21:54:44,900 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:44,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:44,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2053047112, now seen corresponding path program 10 times [2020-09-04 21:54:44,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:44,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480848659] [2020-09-04 21:54:44,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 21:54:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:45,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-09-04 21:54:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5013 backedges. 884 proven. 974 refuted. 0 times theorem prover too weak. 3155 trivial. 0 not checked. [2020-09-04 21:54:46,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480848659] [2020-09-04 21:54:46,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:46,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-04 21:54:46,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484167517] [2020-09-04 21:54:46,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 21:54:46,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:46,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 21:54:46,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-09-04 21:54:46,581 INFO L87 Difference]: Start difference. First operand 469 states and 652 transitions. Second operand 18 states. [2020-09-04 21:54:47,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:47,719 INFO L93 Difference]: Finished difference Result 1019 states and 1522 transitions. [2020-09-04 21:54:47,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 21:54:47,720 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 510 [2020-09-04 21:54:47,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:47,732 INFO L225 Difference]: With dead ends: 1019 [2020-09-04 21:54:47,732 INFO L226 Difference]: Without dead ends: 564 [2020-09-04 21:54:47,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2020-09-04 21:54:47,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-09-04 21:54:47,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 499. [2020-09-04 21:54:47,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-09-04 21:54:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 703 transitions. [2020-09-04 21:54:47,799 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 703 transitions. Word has length 510 [2020-09-04 21:54:47,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:47,800 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 703 transitions. [2020-09-04 21:54:47,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 21:54:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 703 transitions. [2020-09-04 21:54:47,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2020-09-04 21:54:47,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:47,806 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 26, 25, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 11, 9, 9, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:47,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 21:54:47,807 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:47,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:47,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1895597470, now seen corresponding path program 11 times [2020-09-04 21:54:47,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:47,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591004428] [2020-09-04 21:54:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 21:54:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-09-04 21:54:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6165 backedges. 1410 proven. 1085 refuted. 0 times theorem prover too weak. 3670 trivial. 0 not checked. [2020-09-04 21:54:49,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591004428] [2020-09-04 21:54:49,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:49,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-04 21:54:49,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590684511] [2020-09-04 21:54:49,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-04 21:54:49,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:49,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-04 21:54:49,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2020-09-04 21:54:49,876 INFO L87 Difference]: Start difference. First operand 499 states and 703 transitions. Second operand 22 states. [2020-09-04 21:54:51,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:51,257 INFO L93 Difference]: Finished difference Result 1165 states and 1888 transitions. [2020-09-04 21:54:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-04 21:54:51,259 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 563 [2020-09-04 21:54:51,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:51,271 INFO L225 Difference]: With dead ends: 1165 [2020-09-04 21:54:51,272 INFO L226 Difference]: Without dead ends: 680 [2020-09-04 21:54:51,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=1408, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 21:54:51,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-09-04 21:54:51,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 600. [2020-09-04 21:54:51,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-09-04 21:54:51,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 921 transitions. [2020-09-04 21:54:51,357 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 921 transitions. Word has length 563 [2020-09-04 21:54:51,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:51,358 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 921 transitions. [2020-09-04 21:54:51,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-04 21:54:51,358 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 921 transitions. [2020-09-04 21:54:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2020-09-04 21:54:51,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:51,366 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 34, 33, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 14, 14, 12, 12, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:51,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 21:54:51,367 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:51,367 INFO L82 PathProgramCache]: Analyzing trace with hash -881046408, now seen corresponding path program 12 times [2020-09-04 21:54:51,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:51,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432294682] [2020-09-04 21:54:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:51,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:54:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:51,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 21:54:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:51,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 21:54:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-09-04 21:54:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:52,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 21:54:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 21:54:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-04 21:54:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-04 21:54:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 21:54:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 21:54:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:53,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:54:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:54:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10826 backedges. 1189 proven. 2172 refuted. 0 times theorem prover too weak. 7465 trivial. 0 not checked. [2020-09-04 21:54:54,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432294682] [2020-09-04 21:54:54,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 21:54:54,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-04 21:54:54,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464024171] [2020-09-04 21:54:54,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 21:54:54,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:54:54,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 21:54:54,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-09-04 21:54:54,805 INFO L87 Difference]: Start difference. First operand 600 states and 921 transitions. Second operand 20 states. [2020-09-04 21:54:56,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:54:56,467 INFO L93 Difference]: Finished difference Result 970 states and 1552 transitions. [2020-09-04 21:54:56,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-09-04 21:54:56,468 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 739 [2020-09-04 21:54:56,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:54:56,476 INFO L225 Difference]: With dead ends: 970 [2020-09-04 21:54:56,476 INFO L226 Difference]: Without dead ends: 326 [2020-09-04 21:54:56,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=333, Invalid=2117, Unknown=0, NotChecked=0, Total=2450 [2020-09-04 21:54:56,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-09-04 21:54:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 280. [2020-09-04 21:54:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-09-04 21:54:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 396 transitions. [2020-09-04 21:54:56,517 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 396 transitions. Word has length 739 [2020-09-04 21:54:56,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:54:56,518 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 396 transitions. [2020-09-04 21:54:56,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 21:54:56,519 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 396 transitions. [2020-09-04 21:54:56,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2020-09-04 21:54:56,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:54:56,527 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 11, 11, 10, 10, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:54:56,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 21:54:56,528 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:54:56,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:54:56,528 INFO L82 PathProgramCache]: Analyzing trace with hash -425442147, now seen corresponding path program 13 times [2020-09-04 21:54:56,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:54:56,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444462926] [2020-09-04 21:54:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:54:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:54:56,680 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:54:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:54:56,872 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:54:57,023 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 21:54:57,024 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 21:54:57,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 21:54:57,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 09:54:57 BoogieIcfgContainer [2020-09-04 21:54:57,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 21:54:57,264 INFO L168 Benchmark]: Toolchain (without parser) took 34584.98 ms. Allocated memory was 145.8 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 101.8 MB in the beginning and 518.9 MB in the end (delta: -417.1 MB). Peak memory consumption was 775.1 MB. Max. memory is 7.1 GB. [2020-09-04 21:54:57,265 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 145.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 21:54:57,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.20 ms. Allocated memory is still 145.8 MB. Free memory was 101.4 MB in the beginning and 91.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-04 21:54:57,266 INFO L168 Benchmark]: Boogie Preprocessor took 152.80 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 91.9 MB in the beginning and 182.1 MB in the end (delta: -90.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-04 21:54:57,267 INFO L168 Benchmark]: RCFGBuilder took 368.04 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 168.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-09-04 21:54:57,277 INFO L168 Benchmark]: TraceAbstraction took 33727.92 ms. Allocated memory was 203.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 167.3 MB in the beginning and 518.9 MB in the end (delta: -351.6 MB). Peak memory consumption was 783.0 MB. Max. memory is 7.1 GB. [2020-09-04 21:54:57,283 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 145.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.20 ms. Allocated memory is still 145.8 MB. Free memory was 101.4 MB in the beginning and 91.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.80 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 91.9 MB in the beginning and 182.1 MB in the end (delta: -90.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 368.04 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 168.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33727.92 ms. Allocated memory was 203.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 167.3 MB in the beginning and 518.9 MB in the end (delta: -351.6 MB). Peak memory consumption was 783.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int x = 8; VAL [x=8] [L37] CALL, EXPR fibo1(x) VAL [\old(n)=8] [L8] COND FALSE !(n < 1) VAL [\old(n)=8, n=8] [L10] COND FALSE !(n == 1) VAL [\old(n)=8, n=8] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=7] [L18] COND FALSE !(n < 1) VAL [\old(n)=7, n=7] [L20] COND FALSE !(n == 1) VAL [\old(n)=7, n=7] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=6] [L8] COND FALSE !(n < 1) VAL [\old(n)=6, n=6] [L10] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=5] [L18] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L20] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=4] [L8] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L10] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L18] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L20] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L18] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L19] return 0; VAL [\old(n)=0, \result=0, n=0] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L11] return 1; VAL [\old(n)=1, \result=1, n=1] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=3, \result=2, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=4, fibo2(n-1)=2, n=4] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=2] [L18] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L20] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L11] return 1; VAL [\old(n)=1, \result=1, n=1] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L9] return 0; VAL [\old(n)=0, \result=0, n=0] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=2, \result=1, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=4, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=4, \result=3, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=5, fibo1(n-1)=3, n=5] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=3] [L8] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L10] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L18] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L20] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L11] return 1; VAL [\old(n)=1, \result=1, n=1] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L9] return 0; VAL [\old(n)=0, \result=0, n=0] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=2, \result=1, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=3, \result=2, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=5, fibo1(n-1)=3, fibo1(n-2)=2, n=5] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=5, \result=5, fibo1(n-1)=3, fibo1(n-2)=2, n=5] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=6, fibo2(n-1)=5, n=6] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=4] [L18] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L20] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L8] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L10] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L18] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L20] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L11] return 1; VAL [\old(n)=1, \result=1, n=1] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L9] return 0; VAL [\old(n)=0, \result=0, n=0] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=2, \result=1, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=3, \result=2, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L18] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L19] return 0; VAL [\old(n)=0, \result=0, n=0] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=4, \result=3, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=6, fibo2(n-1)=5, fibo2(n-2)=3, n=6] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=6, \result=8, fibo2(n-1)=5, fibo2(n-2)=3, n=6] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=7, fibo1(n-1)=8, n=7] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=5] [L8] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L10] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=4] [L18] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L20] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L8] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L10] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L18] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L20] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L11] return 1; VAL [\old(n)=1, \result=1, n=1] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L9] return 0; VAL [\old(n)=0, \result=0, n=0] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=2, \result=1, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=3, \result=2, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L18] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L19] return 0; VAL [\old(n)=0, \result=0, n=0] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=4, \result=3, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=5, fibo2(n-1)=3, n=5] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=3] [L18] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L20] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L18] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L19] return 0; VAL [\old(n)=0, \result=0, n=0] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L11] return 1; VAL [\old(n)=1, \result=1, n=1] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=3, \result=2, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=5, fibo2(n-1)=3, fibo2(n-2)=2, n=5] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=5, \result=5, fibo2(n-1)=3, fibo2(n-2)=2, n=5] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=7, fibo1(n-1)=8, fibo1(n-2)=5, n=7] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=7, \result=13, fibo1(n-1)=8, fibo1(n-2)=5, n=7] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=8, fibo2(n-1)=13, n=8] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=6] [L18] COND FALSE !(n < 1) VAL [\old(n)=6, n=6] [L20] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=5] [L8] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L10] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=4] [L18] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L20] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L8] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L10] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L18] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L20] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L11] return 1; VAL [\old(n)=1, \result=1, n=1] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L9] return 0; VAL [\old(n)=0, \result=0, n=0] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=2, \result=1, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=3, \result=2, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L18] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L19] return 0; VAL [\old(n)=0, \result=0, n=0] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=4, \result=3, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=5, fibo2(n-1)=3, n=5] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=3] [L18] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L20] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L18] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L19] return 0; VAL [\old(n)=0, \result=0, n=0] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L11] return 1; VAL [\old(n)=1, \result=1, n=1] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=3, \result=2, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=5, fibo2(n-1)=3, fibo2(n-2)=2, n=5] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=5, \result=5, fibo2(n-1)=3, fibo2(n-2)=2, n=5] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=6, fibo1(n-1)=5, n=6] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=4] [L8] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L10] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L18] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L20] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L18] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L19] return 0; VAL [\old(n)=0, \result=0, n=0] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=2, \result=1, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L11] return 1; VAL [\old(n)=1, \result=1, n=1] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=3, \result=2, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=4, fibo2(n-1)=2, n=4] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=2] [L18] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L20] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L11] return 1; VAL [\old(n)=1, \result=1, n=1] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 VAL [\old(n)=0, n=0] [L9] return 0; VAL [\old(n)=0, \result=0, n=0] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=2, \result=1, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=4, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=4, \result=3, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=6, fibo1(n-1)=5, fibo1(n-2)=3, n=6] [L23] return fibo1(n-1) + fibo1(n-2); VAL [\old(n)=6, \result=8, fibo1(n-1)=5, fibo1(n-2)=3, n=6] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=8, fibo2(n-1)=13, fibo2(n-2)=8, n=8] [L13] return fibo2(n-1) + fibo2(n-2); VAL [\old(n)=8, \result=21, fibo2(n-1)=13, fibo2(n-2)=8, n=8] [L37] RET, EXPR fibo1(x) VAL [fibo1(x)=21, x=8] [L37] int result = fibo1(x); VAL [fibo1(x)=21, result=21, x=8] [L38] COND TRUE result == 21 VAL [result=21, x=8] [L39] __VERIFIER_error() VAL [result=21, x=8] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.3s, OverallIterations: 24, TraceHistogramMax: 51, AutomataDifference: 12.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1204 SDtfs, 1688 SDslu, 7792 SDs, 0 SdLazy, 7402 SolverSat, 871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1745 GetRequests, 1332 SyntacticMatches, 0 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2141 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=846occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 23 MinimizatonAttempts, 573 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 6210 NumberOfCodeBlocks, 6210 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 5589 ConstructedInterpolants, 0 QuantifiedInterpolants, 3802413 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 41848/52922 InterpolantCoveringCapability, 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 incorrect! Received shutdown request...