/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:46:45,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:46:45,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:46:45,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:46:45,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:46:45,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:46:45,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:46:45,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:46:45,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:46:45,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:46:45,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:46:45,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:46:45,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:46:45,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:46:45,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:46:45,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:46:45,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:46:45,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:46:45,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:46:45,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:46:45,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:46:45,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:46:45,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:46:45,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:46:45,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:46:45,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:46:45,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:46:45,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:46:45,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:46:45,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:46:45,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:46:45,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:46:45,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:46:45,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:46:45,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:46:45,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:46:45,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:46:45,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:46:45,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:46:45,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:46:45,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:46:45,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 23:46:45,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:46:45,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:46:45,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:46:45,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:46:45,838 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:46:45,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:46:45,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:46:45,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:46:45,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:46:45,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:46:45,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:46:45,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:46:45,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:46:45,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:46:45,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:46:45,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:46:45,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:46:45,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:46:45,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:46:45,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:46:45,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:46:45,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:46:45,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:46:45,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:46:45,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:46:45,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:46:45,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:46:45,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:46:45,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:46:45,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:46:46,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:46:46,155 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:46:46,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:46:46,160 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:46:46,163 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:46:46,165 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-08-21 23:46:46,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0058a3ed4/398257e0916a437e88ef1d4410acac8d/FLAG09d47ab8e [2020-08-21 23:46:46,674 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:46:46,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-08-21 23:46:46,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0058a3ed4/398257e0916a437e88ef1d4410acac8d/FLAG09d47ab8e [2020-08-21 23:46:47,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0058a3ed4/398257e0916a437e88ef1d4410acac8d [2020-08-21 23:46:47,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:46:47,039 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:46:47,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:46:47,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:46:47,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:46:47,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:46:47" (1/1) ... [2020-08-21 23:46:47,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da42254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:46:47, skipping insertion in model container [2020-08-21 23:46:47,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:46:47" (1/1) ... [2020-08-21 23:46:47,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:46:47,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:46:47,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:46:47,246 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:46:47,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:46:47,271 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:46:47,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:46:47 WrapperNode [2020-08-21 23:46:47,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:46:47,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:46:47,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:46:47,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:46:47,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:46:47" (1/1) ... [2020-08-21 23:46:47,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:46:47" (1/1) ... [2020-08-21 23:46:47,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:46:47" (1/1) ... [2020-08-21 23:46:47,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:46:47" (1/1) ... [2020-08-21 23:46:47,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:46:47" (1/1) ... [2020-08-21 23:46:47,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:46:47" (1/1) ... [2020-08-21 23:46:47,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:46:47" (1/1) ... [2020-08-21 23:46:47,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:46:47,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:46:47,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:46:47,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:46:47,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:46:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:46:47,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:46:47,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:46:47,448 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-08-21 23:46:47,448 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-08-21 23:46:47,448 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:46:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:46:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:46:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-08-21 23:46:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-08-21 23:46:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:46:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:46:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:46:47,838 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:46:47,838 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 23:46:47,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:46:47 BoogieIcfgContainer [2020-08-21 23:46:47,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:46:47,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:46:47,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:46:47,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:46:47,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:46:47" (1/3) ... [2020-08-21 23:46:47,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5173a81e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:46:47, skipping insertion in model container [2020-08-21 23:46:47,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:46:47" (2/3) ... [2020-08-21 23:46:47,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5173a81e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:46:47, skipping insertion in model container [2020-08-21 23:46:47,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:46:47" (3/3) ... [2020-08-21 23:46:47,850 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2020-08-21 23:46:47,862 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:46:47,870 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:46:47,887 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:46:47,920 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:46:47,920 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:46:47,921 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:46:47,921 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:46:47,921 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:46:47,921 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:46:47,921 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:46:47,922 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:46:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-21 23:46:47,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 23:46:47,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:47,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:46:47,953 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:47,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:47,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-08-21 23:46:47,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:47,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007186138] [2020-08-21 23:46:47,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:46:48,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007186138] [2020-08-21 23:46:48,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:46:48,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:46:48,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138091029] [2020-08-21 23:46:48,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:46:48,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:48,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:46:48,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:46:48,194 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-08-21 23:46:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:48,304 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-21 23:46:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:46:48,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-21 23:46:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:48,316 INFO L225 Difference]: With dead ends: 44 [2020-08-21 23:46:48,317 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 23:46:48,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:46:48,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 23:46:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-21 23:46:48,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 23:46:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-21 23:46:48,366 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-08-21 23:46:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:48,367 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-21 23:46:48,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:46:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-21 23:46:48,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 23:46:48,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:48,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:46:48,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:46:48,370 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:48,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:48,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-08-21 23:46:48,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:48,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110168540] [2020-08-21 23:46:48,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:46:48,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110168540] [2020-08-21 23:46:48,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:46:48,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:46:48,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393816353] [2020-08-21 23:46:48,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:46:48,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:48,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:46:48,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:46:48,441 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-08-21 23:46:48,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:48,517 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-08-21 23:46:48,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:46:48,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-21 23:46:48,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:48,520 INFO L225 Difference]: With dead ends: 36 [2020-08-21 23:46:48,520 INFO L226 Difference]: Without dead ends: 32 [2020-08-21 23:46:48,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:46:48,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-21 23:46:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-21 23:46:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 23:46:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-21 23:46:48,532 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-08-21 23:46:48,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:48,533 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-21 23:46:48,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:46:48,533 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-21 23:46:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 23:46:48,535 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:48,535 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:46:48,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:46:48,536 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:48,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:48,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-08-21 23:46:48,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:48,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187618174] [2020-08-21 23:46:48,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:46:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 23:46:48,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187618174] [2020-08-21 23:46:48,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:48,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 23:46:48,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998233432] [2020-08-21 23:46:48,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 23:46:48,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:48,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 23:46:48,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:46:48,662 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2020-08-21 23:46:48,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:48,756 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-08-21 23:46:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:46:48,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-08-21 23:46:48,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:48,759 INFO L225 Difference]: With dead ends: 58 [2020-08-21 23:46:48,759 INFO L226 Difference]: Without dead ends: 34 [2020-08-21 23:46:48,760 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 [2020-08-21 23:46:48,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-21 23:46:48,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-08-21 23:46:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-21 23:46:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-08-21 23:46:48,771 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-08-21 23:46:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:48,772 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-08-21 23:46:48,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 23:46:48,772 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-08-21 23:46:48,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 23:46:48,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:48,774 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] [2020-08-21 23:46:48,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:46:48,775 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:48,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:48,776 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-08-21 23:46:48,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:48,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597661227] [2020-08-21 23:46:48,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 23:46:48,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597661227] [2020-08-21 23:46:48,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:48,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 23:46:48,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922727687] [2020-08-21 23:46:48,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 23:46:48,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:48,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 23:46:48,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:46:48,902 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2020-08-21 23:46:49,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:49,083 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2020-08-21 23:46:49,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:46:49,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-21 23:46:49,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:49,087 INFO L225 Difference]: With dead ends: 54 [2020-08-21 23:46:49,087 INFO L226 Difference]: Without dead ends: 50 [2020-08-21 23:46:49,088 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 [2020-08-21 23:46:49,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-21 23:46:49,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-08-21 23:46:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-21 23:46:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-08-21 23:46:49,101 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 27 [2020-08-21 23:46:49,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:49,102 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-08-21 23:46:49,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 23:46:49,102 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-08-21 23:46:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-21 23:46:49,104 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:49,104 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] [2020-08-21 23:46:49,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:46:49,105 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:49,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:49,105 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-08-21 23:46:49,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:49,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425230223] [2020-08-21 23:46:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:46:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:46:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 23:46:49,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425230223] [2020-08-21 23:46:49,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:49,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 23:46:49,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726923832] [2020-08-21 23:46:49,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:46:49,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:49,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:46:49,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:46:49,223 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states. [2020-08-21 23:46:49,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:49,302 INFO L93 Difference]: Finished difference Result 94 states and 142 transitions. [2020-08-21 23:46:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 23:46:49,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-08-21 23:46:49,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:49,305 INFO L225 Difference]: With dead ends: 94 [2020-08-21 23:46:49,305 INFO L226 Difference]: Without dead ends: 52 [2020-08-21 23:46:49,307 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 [2020-08-21 23:46:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-21 23:46:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-08-21 23:46:49,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 23:46:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2020-08-21 23:46:49,319 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 39 [2020-08-21 23:46:49,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:49,320 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2020-08-21 23:46:49,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:46:49,320 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2020-08-21 23:46:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-21 23:46:49,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:49,322 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] [2020-08-21 23:46:49,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:46:49,323 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:49,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:49,323 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-08-21 23:46:49,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:49,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547936821] [2020-08-21 23:46:49,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-21 23:46:49,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547936821] [2020-08-21 23:46:49,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:49,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 23:46:49,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817701619] [2020-08-21 23:46:49,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:46:49,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:49,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:46:49,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:46:49,457 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand 8 states. [2020-08-21 23:46:49,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:49,571 INFO L93 Difference]: Finished difference Result 103 states and 158 transitions. [2020-08-21 23:46:49,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 23:46:49,571 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-21 23:46:49,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:49,573 INFO L225 Difference]: With dead ends: 103 [2020-08-21 23:46:49,574 INFO L226 Difference]: Without dead ends: 57 [2020-08-21 23:46:49,575 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 [2020-08-21 23:46:49,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-21 23:46:49,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-08-21 23:46:49,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 23:46:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2020-08-21 23:46:49,587 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 40 [2020-08-21 23:46:49,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:49,588 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2020-08-21 23:46:49,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:46:49,588 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2020-08-21 23:46:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-21 23:46:49,590 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:49,590 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] [2020-08-21 23:46:49,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:46:49,591 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:49,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:49,591 INFO L82 PathProgramCache]: Analyzing trace with hash 208191613, now seen corresponding path program 1 times [2020-08-21 23:46:49,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:49,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091080383] [2020-08-21 23:46:49,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 23:46:49,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091080383] [2020-08-21 23:46:49,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:49,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 23:46:49,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67062417] [2020-08-21 23:46:49,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:46:49,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:49,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:46:49,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:46:49,716 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand 8 states. [2020-08-21 23:46:49,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:49,912 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-08-21 23:46:49,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 23:46:49,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-08-21 23:46:49,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:49,916 INFO L225 Difference]: With dead ends: 86 [2020-08-21 23:46:49,916 INFO L226 Difference]: Without dead ends: 82 [2020-08-21 23:46:49,930 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 [2020-08-21 23:46:49,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-21 23:46:49,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-08-21 23:46:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-21 23:46:49,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 118 transitions. [2020-08-21 23:46:49,952 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 118 transitions. Word has length 41 [2020-08-21 23:46:49,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:49,952 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 118 transitions. [2020-08-21 23:46:49,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:46:49,953 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-08-21 23:46:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-21 23:46:49,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:49,960 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2020-08-21 23:46:49,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:46:49,960 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:49,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:49,961 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2020-08-21 23:46:49,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:49,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264838785] [2020-08-21 23:46:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 23:46:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-21 23:46:50,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264838785] [2020-08-21 23:46:50,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:50,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 23:46:50,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610536033] [2020-08-21 23:46:50,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:46:50,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:50,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:46:50,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:46:50,184 INFO L87 Difference]: Start difference. First operand 79 states and 118 transitions. Second operand 8 states. [2020-08-21 23:46:50,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:50,326 INFO L93 Difference]: Finished difference Result 167 states and 288 transitions. [2020-08-21 23:46:50,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:46:50,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-08-21 23:46:50,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:50,329 INFO L225 Difference]: With dead ends: 167 [2020-08-21 23:46:50,329 INFO L226 Difference]: Without dead ends: 94 [2020-08-21 23:46:50,333 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 [2020-08-21 23:46:50,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-08-21 23:46:50,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2020-08-21 23:46:50,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-21 23:46:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 134 transitions. [2020-08-21 23:46:50,367 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 134 transitions. Word has length 54 [2020-08-21 23:46:50,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:50,368 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 134 transitions. [2020-08-21 23:46:50,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:46:50,368 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 134 transitions. [2020-08-21 23:46:50,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-21 23:46:50,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:50,375 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2020-08-21 23:46:50,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 23:46:50,375 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:50,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:50,376 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times [2020-08-21 23:46:50,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:50,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691185188] [2020-08-21 23:46:50,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 23:46:50,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691185188] [2020-08-21 23:46:50,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:50,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 23:46:50,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677848151] [2020-08-21 23:46:50,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 23:46:50,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:50,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 23:46:50,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:46:50,522 INFO L87 Difference]: Start difference. First operand 88 states and 134 transitions. Second operand 10 states. [2020-08-21 23:46:50,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:50,733 INFO L93 Difference]: Finished difference Result 188 states and 331 transitions. [2020-08-21 23:46:50,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 23:46:50,733 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-08-21 23:46:50,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:50,735 INFO L225 Difference]: With dead ends: 188 [2020-08-21 23:46:50,735 INFO L226 Difference]: Without dead ends: 109 [2020-08-21 23:46:50,737 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 [2020-08-21 23:46:50,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-21 23:46:50,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2020-08-21 23:46:50,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-21 23:46:50,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 158 transitions. [2020-08-21 23:46:50,752 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 158 transitions. Word has length 55 [2020-08-21 23:46:50,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:50,752 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 158 transitions. [2020-08-21 23:46:50,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 23:46:50,752 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 158 transitions. [2020-08-21 23:46:50,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 23:46:50,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:50,754 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:46:50,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 23:46:50,755 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:50,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:50,755 INFO L82 PathProgramCache]: Analyzing trace with hash -908952008, now seen corresponding path program 2 times [2020-08-21 23:46:50,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:50,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880765224] [2020-08-21 23:46:50,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-08-21 23:46:50,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880765224] [2020-08-21 23:46:50,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:50,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 23:46:50,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565813733] [2020-08-21 23:46:50,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:46:50,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:50,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:46:50,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:46:50,967 INFO L87 Difference]: Start difference. First operand 100 states and 158 transitions. Second operand 12 states. [2020-08-21 23:46:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:51,342 INFO L93 Difference]: Finished difference Result 199 states and 354 transitions. [2020-08-21 23:46:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 23:46:51,342 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-08-21 23:46:51,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:51,345 INFO L225 Difference]: With dead ends: 199 [2020-08-21 23:46:51,345 INFO L226 Difference]: Without dead ends: 86 [2020-08-21 23:46:51,347 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 [2020-08-21 23:46:51,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-21 23:46:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2020-08-21 23:46:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-21 23:46:51,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2020-08-21 23:46:51,358 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 82 [2020-08-21 23:46:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:51,359 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2020-08-21 23:46:51,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:46:51,359 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2020-08-21 23:46:51,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-21 23:46:51,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:51,360 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:46:51,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 23:46:51,361 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:51,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:51,361 INFO L82 PathProgramCache]: Analyzing trace with hash -2119203654, now seen corresponding path program 2 times [2020-08-21 23:46:51,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:51,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372040718] [2020-08-21 23:46:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 23:46:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-08-21 23:46:51,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372040718] [2020-08-21 23:46:51,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:51,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 23:46:51,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034055355] [2020-08-21 23:46:51,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 23:46:51,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:51,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 23:46:51,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:46:51,591 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand 10 states. [2020-08-21 23:46:51,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:51,800 INFO L93 Difference]: Finished difference Result 142 states and 204 transitions. [2020-08-21 23:46:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 23:46:51,801 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2020-08-21 23:46:51,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:51,802 INFO L225 Difference]: With dead ends: 142 [2020-08-21 23:46:51,802 INFO L226 Difference]: Without dead ends: 78 [2020-08-21 23:46:51,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:46:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-21 23:46:51,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-21 23:46:51,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-21 23:46:51,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-08-21 23:46:51,811 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 110 [2020-08-21 23:46:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:51,811 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-08-21 23:46:51,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 23:46:51,812 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-08-21 23:46:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-21 23:46:51,813 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:51,813 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 13, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:46:51,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 23:46:51,814 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:51,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:51,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1263382818, now seen corresponding path program 3 times [2020-08-21 23:46:51,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:51,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15287546] [2020-08-21 23:46:51,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:51,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 23:46:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 23:46:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 23:46:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 133 proven. 373 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2020-08-21 23:46:52,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15287546] [2020-08-21 23:46:52,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:52,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 23:46:52,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102586410] [2020-08-21 23:46:52,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 23:46:52,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:52,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 23:46:52,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-21 23:46:52,314 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 15 states. [2020-08-21 23:46:52,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:52,900 INFO L93 Difference]: Finished difference Result 184 states and 282 transitions. [2020-08-21 23:46:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 23:46:52,901 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 192 [2020-08-21 23:46:52,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:52,902 INFO L225 Difference]: With dead ends: 184 [2020-08-21 23:46:52,902 INFO L226 Difference]: Without dead ends: 111 [2020-08-21 23:46:52,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2020-08-21 23:46:52,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-21 23:46:52,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-08-21 23:46:52,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-21 23:46:52,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 133 transitions. [2020-08-21 23:46:52,915 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 133 transitions. Word has length 192 [2020-08-21 23:46:52,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:52,916 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 133 transitions. [2020-08-21 23:46:52,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 23:46:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 133 transitions. [2020-08-21 23:46:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 23:46:52,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:52,919 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:46:52,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 23:46:52,919 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:52,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:52,920 INFO L82 PathProgramCache]: Analyzing trace with hash -2102107778, now seen corresponding path program 1 times [2020-08-21 23:46:52,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:52,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835224207] [2020-08-21 23:46:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:52,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:46:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 23:46:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 109 proven. 85 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-08-21 23:46:53,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835224207] [2020-08-21 23:46:53,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:53,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 23:46:53,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660356234] [2020-08-21 23:46:53,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 23:46:53,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:53,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 23:46:53,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-21 23:46:53,186 INFO L87 Difference]: Start difference. First operand 99 states and 133 transitions. Second operand 11 states. [2020-08-21 23:46:53,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:53,415 INFO L93 Difference]: Finished difference Result 188 states and 266 transitions. [2020-08-21 23:46:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 23:46:53,416 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-21 23:46:53,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:53,417 INFO L225 Difference]: With dead ends: 188 [2020-08-21 23:46:53,417 INFO L226 Difference]: Without dead ends: 101 [2020-08-21 23:46:53,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-08-21 23:46:53,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-08-21 23:46:53,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2020-08-21 23:46:53,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-21 23:46:53,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-08-21 23:46:53,427 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 136 [2020-08-21 23:46:53,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:53,427 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-08-21 23:46:53,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 23:46:53,427 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-08-21 23:46:53,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-21 23:46:53,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:53,430 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:46:53,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 23:46:53,430 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:53,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:53,430 INFO L82 PathProgramCache]: Analyzing trace with hash 677703633, now seen corresponding path program 2 times [2020-08-21 23:46:53,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:53,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317526284] [2020-08-21 23:46:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:46:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 23:46:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 138 proven. 250 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2020-08-21 23:46:53,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317526284] [2020-08-21 23:46:53,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:53,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 23:46:53,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410351038] [2020-08-21 23:46:53,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 23:46:53,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:53,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 23:46:53,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:46:53,854 INFO L87 Difference]: Start difference. First operand 98 states and 130 transitions. Second operand 14 states. [2020-08-21 23:46:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:54,385 INFO L93 Difference]: Finished difference Result 217 states and 326 transitions. [2020-08-21 23:46:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 23:46:54,386 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 177 [2020-08-21 23:46:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:54,389 INFO L225 Difference]: With dead ends: 217 [2020-08-21 23:46:54,389 INFO L226 Difference]: Without dead ends: 124 [2020-08-21 23:46:54,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2020-08-21 23:46:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-21 23:46:54,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2020-08-21 23:46:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-21 23:46:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 144 transitions. [2020-08-21 23:46:54,402 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 144 transitions. Word has length 177 [2020-08-21 23:46:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:54,402 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 144 transitions. [2020-08-21 23:46:54,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 23:46:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 144 transitions. [2020-08-21 23:46:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 23:46:54,405 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:54,405 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, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:46:54,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 23:46:54,405 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:54,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:54,406 INFO L82 PathProgramCache]: Analyzing trace with hash -529934979, now seen corresponding path program 3 times [2020-08-21 23:46:54,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:54,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426771769] [2020-08-21 23:46:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:46:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 23:46:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 144 proven. 139 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-08-21 23:46:54,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426771769] [2020-08-21 23:46:54,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:54,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 23:46:54,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028888179] [2020-08-21 23:46:54,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 23:46:54,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:54,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 23:46:54,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:46:54,776 INFO L87 Difference]: Start difference. First operand 107 states and 144 transitions. Second operand 14 states. [2020-08-21 23:46:55,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:55,294 INFO L93 Difference]: Finished difference Result 211 states and 302 transitions. [2020-08-21 23:46:55,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 23:46:55,300 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 150 [2020-08-21 23:46:55,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:55,302 INFO L225 Difference]: With dead ends: 211 [2020-08-21 23:46:55,303 INFO L226 Difference]: Without dead ends: 114 [2020-08-21 23:46:55,304 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 [2020-08-21 23:46:55,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-21 23:46:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2020-08-21 23:46:55,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-21 23:46:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 147 transitions. [2020-08-21 23:46:55,313 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 147 transitions. Word has length 150 [2020-08-21 23:46:55,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:55,314 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 147 transitions. [2020-08-21 23:46:55,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 23:46:55,314 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 147 transitions. [2020-08-21 23:46:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-21 23:46:55,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:55,317 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, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:46:55,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 23:46:55,317 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:55,318 INFO L82 PathProgramCache]: Analyzing trace with hash 307857833, now seen corresponding path program 4 times [2020-08-21 23:46:55,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:55,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562421516] [2020-08-21 23:46:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:46:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:55,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:56,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 23:46:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:56,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:56,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:56,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:56,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:56,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:56,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:56,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:56,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2020-08-21 23:46:56,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562421516] [2020-08-21 23:46:56,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:56,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-21 23:46:56,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970477624] [2020-08-21 23:46:56,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-21 23:46:56,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:56,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-21 23:46:56,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-08-21 23:46:56,262 INFO L87 Difference]: Start difference. First operand 111 states and 147 transitions. Second operand 28 states. [2020-08-21 23:46:56,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:56,907 INFO L93 Difference]: Finished difference Result 124 states and 167 transitions. [2020-08-21 23:46:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 23:46:56,908 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 177 [2020-08-21 23:46:56,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:56,910 INFO L225 Difference]: With dead ends: 124 [2020-08-21 23:46:56,911 INFO L226 Difference]: Without dead ends: 120 [2020-08-21 23:46:56,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 23:46:56,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-08-21 23:46:56,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2020-08-21 23:46:56,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 23:46:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2020-08-21 23:46:56,921 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 177 [2020-08-21 23:46:56,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:56,922 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2020-08-21 23:46:56,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-21 23:46:56,922 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2020-08-21 23:46:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-08-21 23:46:56,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:56,925 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 14, 14, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:46:56,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 23:46:56,925 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:56,926 INFO L82 PathProgramCache]: Analyzing trace with hash -678687486, now seen corresponding path program 5 times [2020-08-21 23:46:56,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:56,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848587172] [2020-08-21 23:46:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:46:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 23:46:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:46:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 207 proven. 371 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2020-08-21 23:46:57,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848587172] [2020-08-21 23:46:57,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:57,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 23:46:57,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243239701] [2020-08-21 23:46:57,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 23:46:57,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:57,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 23:46:57,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:46:57,563 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand 16 states. [2020-08-21 23:46:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:58,338 INFO L93 Difference]: Finished difference Result 245 states and 365 transitions. [2020-08-21 23:46:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 23:46:58,338 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 218 [2020-08-21 23:46:58,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:58,340 INFO L225 Difference]: With dead ends: 245 [2020-08-21 23:46:58,341 INFO L226 Difference]: Without dead ends: 134 [2020-08-21 23:46:58,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 23:46:58,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-08-21 23:46:58,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2020-08-21 23:46:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-21 23:46:58,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 159 transitions. [2020-08-21 23:46:58,356 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 159 transitions. Word has length 218 [2020-08-21 23:46:58,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:58,357 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 159 transitions. [2020-08-21 23:46:58,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 23:46:58,357 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 159 transitions. [2020-08-21 23:46:58,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-08-21 23:46:58,362 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:58,362 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 16, 15, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:46:58,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 23:46:58,362 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:58,363 INFO L82 PathProgramCache]: Analyzing trace with hash -806788011, now seen corresponding path program 6 times [2020-08-21 23:46:58,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:58,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681490802] [2020-08-21 23:46:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:46:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 23:46:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:46:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-21 23:46:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 177 proven. 317 refuted. 0 times theorem prover too weak. 1315 trivial. 0 not checked. [2020-08-21 23:46:58,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681490802] [2020-08-21 23:46:58,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:58,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 23:46:58,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489844838] [2020-08-21 23:46:58,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 23:46:58,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:58,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 23:46:58,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-21 23:46:58,933 INFO L87 Difference]: Start difference. First operand 120 states and 159 transitions. Second operand 11 states. [2020-08-21 23:46:59,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:46:59,199 INFO L93 Difference]: Finished difference Result 233 states and 321 transitions. [2020-08-21 23:46:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 23:46:59,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2020-08-21 23:46:59,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:46:59,201 INFO L225 Difference]: With dead ends: 233 [2020-08-21 23:46:59,202 INFO L226 Difference]: Without dead ends: 122 [2020-08-21 23:46:59,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-08-21 23:46:59,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-21 23:46:59,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2020-08-21 23:46:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-21 23:46:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 155 transitions. [2020-08-21 23:46:59,213 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 155 transitions. Word has length 260 [2020-08-21 23:46:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:46:59,213 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 155 transitions. [2020-08-21 23:46:59,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 23:46:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 155 transitions. [2020-08-21 23:46:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-08-21 23:46:59,218 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:46:59,218 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, 7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:46:59,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-21 23:46:59,219 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:46:59,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:46:59,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1614185823, now seen corresponding path program 7 times [2020-08-21 23:46:59,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:46:59,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93963534] [2020-08-21 23:46:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:46:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:46:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:46:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:46:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 23:46:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-21 23:46:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:46:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:46:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 23:46:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:46:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:46:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:46:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 132 proven. 466 refuted. 0 times theorem prover too weak. 1618 trivial. 0 not checked. [2020-08-21 23:46:59,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93963534] [2020-08-21 23:46:59,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:46:59,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 23:46:59,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253088551] [2020-08-21 23:46:59,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:46:59,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:46:59,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:46:59,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:46:59,935 INFO L87 Difference]: Start difference. First operand 119 states and 155 transitions. Second operand 12 states. [2020-08-21 23:47:00,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:47:00,232 INFO L93 Difference]: Finished difference Result 141 states and 187 transitions. [2020-08-21 23:47:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 23:47:00,233 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 286 [2020-08-21 23:47:00,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:47:00,234 INFO L225 Difference]: With dead ends: 141 [2020-08-21 23:47:00,234 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 23:47:00,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-08-21 23:47:00,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 23:47:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 23:47:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 23:47:00,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 23:47:00,237 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 286 [2020-08-21 23:47:00,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:47:00,237 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 23:47:00,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:47:00,237 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 23:47:00,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 23:47:00,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-21 23:47:00,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 23:47:01,196 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 29 [2020-08-21 23:47:01,836 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 32 [2020-08-21 23:47:01,840 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 23:47:01,841 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 23:47:01,841 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 23:47:01,841 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 23:47:01,841 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 23:47:01,841 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 23:47:01,841 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-08-21 23:47:01,841 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2020-08-21 23:47:01,841 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2020-08-21 23:47:01,842 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2020-08-21 23:47:01,842 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-08-21 23:47:01,842 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-08-21 23:47:01,842 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 6 main_~x~0) (<= main_~x~0 6)) [2020-08-21 23:47:01,842 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-08-21 23:47:01,842 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2020-08-21 23:47:01,842 INFO L271 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-08-21 23:47:01,842 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 1 fibo2_~n)) [2020-08-21 23:47:01,842 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-08-21 23:47:01,843 INFO L264 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (and (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and (<= 4 fibo2_~n) (<= 2 |fibo2_#t~ret2|) (<= |fibo2_#in~n| 4) (<= |fibo2_#t~ret2| 2) .cse0) (and (<= 3 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 3) .cse0 (<= 5 |fibo2_#in~n|)) (and .cse0 (<= 6 |fibo2_#in~n|)) (and (<= |fibo2_#t~ret2| 1) .cse0 (<= 1 |fibo2_#t~ret2|) (<= |fibo2_#in~n| 2)))) (not (<= |fibo2_#in~n| 1))) [2020-08-21 23:47:01,843 INFO L268 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-08-21 23:47:01,843 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-08-21 23:47:01,843 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-08-21 23:47:01,843 INFO L268 CegarLoopResult]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2020-08-21 23:47:01,843 INFO L268 CegarLoopResult]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2020-08-21 23:47:01,843 INFO L271 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-08-21 23:47:01,843 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 1)) (= fibo1_~n |fibo1_#in~n|)) [2020-08-21 23:47:01,844 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-08-21 23:47:01,844 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 1)) (or (and (<= |fibo1_#t~ret0| 1) (<= 1 |fibo1_#t~ret0|) (<= fibo1_~n 3)) (not (<= |fibo1_#in~n| 4)) (and (<= 2 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 2) (<= 4 |fibo1_#in~n|))) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 5 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 5) .cse0) (and (<= fibo1_~n 5) .cse0) (and (<= 7 |fibo1_#in~n|) .cse0)))) [2020-08-21 23:47:01,844 INFO L268 CegarLoopResult]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2020-08-21 23:47:01,844 INFO L268 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-08-21 23:47:01,844 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-08-21 23:47:01,844 INFO L268 CegarLoopResult]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-08-21 23:47:01,844 INFO L268 CegarLoopResult]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2020-08-21 23:47:01,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:47:01 BoogieIcfgContainer [2020-08-21 23:47:01,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:47:01,851 INFO L168 Benchmark]: Toolchain (without parser) took 14813.33 ms. Allocated memory was 140.5 MB in the beginning and 478.7 MB in the end (delta: 338.2 MB). Free memory was 103.5 MB in the beginning and 282.5 MB in the end (delta: -179.0 MB). Peak memory consumption was 316.2 MB. Max. memory is 7.1 GB. [2020-08-21 23:47:01,852 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 23:47:01,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.72 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 93.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-21 23:47:01,853 INFO L168 Benchmark]: Boogie Preprocessor took 109.04 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 93.6 MB in the beginning and 182.6 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:47:01,854 INFO L168 Benchmark]: RCFGBuilder took 459.95 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 168.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-08-21 23:47:01,855 INFO L168 Benchmark]: TraceAbstraction took 14006.35 ms. Allocated memory was 203.9 MB in the beginning and 478.7 MB in the end (delta: 274.7 MB). Free memory was 168.9 MB in the beginning and 282.5 MB in the end (delta: -113.6 MB). Peak memory consumption was 318.1 MB. Max. memory is 7.1 GB. [2020-08-21 23:47:01,858 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 232.72 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 93.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.04 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 93.6 MB in the beginning and 182.6 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.95 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 168.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14006.35 ms. Allocated memory was 203.9 MB in the beginning and 478.7 MB in the end (delta: 274.7 MB). Free memory was 168.9 MB in the beginning and 282.5 MB in the end (delta: -113.6 MB). Peak memory consumption was 318.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.3s, OverallIterations: 19, TraceHistogramMax: 21, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 635 SDtfs, 595 SDslu, 4388 SDs, 0 SdLazy, 4296 SolverSat, 456 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 973 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 98 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 647 PreInvPairs, 912 NumberOfFragments, 138 HoareAnnotationTreeSize, 647 FomulaSimplifications, 2845 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 11 FomulaSimplificationsInter, 4707 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 2097 NumberOfCodeBlocks, 2097 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 2078 ConstructedInterpolants, 0 QuantifiedInterpolants, 641722 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 2 PerfectInterpolantSequences, 6946/9383 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 correct! Received shutdown request...