/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=0.8 --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 [2020-08-22 01:24:17,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:24:17,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:24:17,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:24:17,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:24:17,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:24:17,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:24:17,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:24:17,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:24:17,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:24:17,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:24:17,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:24:17,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:24:17,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:24:17,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:24:17,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:24:17,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:24:17,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:24:17,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:24:17,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:24:17,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:24:17,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:24:17,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:24:17,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:24:17,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:24:17,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:24:17,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:24:17,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:24:17,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:24:17,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:24:17,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:24:17,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:24:17,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:24:17,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:24:17,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:24:17,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:24:17,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:24:17,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:24:17,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:24:17,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:24:17,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:24:17,843 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 [2020-08-22 01:24:17,892 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:24:17,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:24:17,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:24:17,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:24:17,895 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:24:17,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:24:17,896 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:24:17,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:24:17,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:24:17,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:24:17,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:24:17,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:24:17,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:24:17,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:24:17,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:24:17,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:24:17,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:24:17,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:24:17,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:24:17,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:24:17,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:24:17,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:24:17,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:24:17,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:24:17,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:24:17,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:24:17,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:24:17,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:24:17,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:24:17,902 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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-08-22 01:24:18,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:24:18,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:24:18,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:24:18,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:24:18,327 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:24:18,328 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-08-22 01:24:18,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5ce8938c/6ded177d0e8e44b392123c5b1d3fa951/FLAGdebc17929 [2020-08-22 01:24:18,895 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:24:18,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-08-22 01:24:18,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5ce8938c/6ded177d0e8e44b392123c5b1d3fa951/FLAGdebc17929 [2020-08-22 01:24:19,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5ce8938c/6ded177d0e8e44b392123c5b1d3fa951 [2020-08-22 01:24:19,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:24:19,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:24:19,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:24:19,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:24:19,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:24:19,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:24:19" (1/1) ... [2020-08-22 01:24:19,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d4521a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:19, skipping insertion in model container [2020-08-22 01:24:19,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:24:19" (1/1) ... [2020-08-22 01:24:19,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:24:19,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:24:19,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:24:19,535 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:24:19,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:24:19,574 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:24:19,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:19 WrapperNode [2020-08-22 01:24:19,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:24:19,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:24:19,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:24:19,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:24:19,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:19" (1/1) ... [2020-08-22 01:24:19,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:19" (1/1) ... [2020-08-22 01:24:19,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:19" (1/1) ... [2020-08-22 01:24:19,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:19" (1/1) ... [2020-08-22 01:24:19,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:19" (1/1) ... [2020-08-22 01:24:19,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:19" (1/1) ... [2020-08-22 01:24:19,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:19" (1/1) ... [2020-08-22 01:24:19,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:24:19,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:24:19,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:24:19,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:24:19,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:19" (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 [2020-08-22 01:24:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:24:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:24:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-08-22 01:24:19,776 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-08-22 01:24:19,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:24:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:24:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:24:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-08-22 01:24:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-08-22 01:24:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:24:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:24:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:24:20,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:24:20,105 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 01:24:20,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:24:20 BoogieIcfgContainer [2020-08-22 01:24:20,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:24:20,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:24:20,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:24:20,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:24:20,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:24:19" (1/3) ... [2020-08-22 01:24:20,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de653ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:24:20, skipping insertion in model container [2020-08-22 01:24:20,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:24:19" (2/3) ... [2020-08-22 01:24:20,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de653ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:24:20, skipping insertion in model container [2020-08-22 01:24:20,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:24:20" (3/3) ... [2020-08-22 01:24:20,143 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2020-08-22 01:24:20,173 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:24:20,216 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:24:20,233 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:24:20,264 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:24:20,264 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:24:20,264 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:24:20,264 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:24:20,265 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:24:20,265 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:24:20,265 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:24:20,265 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:24:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-22 01:24:20,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 01:24:20,290 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:20,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:20,291 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:20,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:20,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-08-22 01:24:20,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:20,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672791921] [2020-08-22 01:24:20,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:20,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:20,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:24:20,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672791921] [2020-08-22 01:24:20,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:24:20,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:24:20,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069386963] [2020-08-22 01:24:20,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:24:20,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:20,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:24:20,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:24:20,575 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-08-22 01:24:20,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:20,707 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-22 01:24:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:24:20,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 01:24:20,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:20,721 INFO L225 Difference]: With dead ends: 44 [2020-08-22 01:24:20,721 INFO L226 Difference]: Without dead ends: 30 [2020-08-22 01:24:20,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:24:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-22 01:24:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-22 01:24:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 01:24:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-22 01:24:20,774 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-08-22 01:24:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:20,775 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-22 01:24:20,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:24:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-22 01:24:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 01:24:20,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:20,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:24:20,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:24:20,779 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:20,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:20,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-08-22 01:24:20,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:20,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975926169] [2020-08-22 01:24:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:20,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:20,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:24:20,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975926169] [2020-08-22 01:24:20,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:24:20,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:24:20,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268842417] [2020-08-22 01:24:20,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:24:20,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:20,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:24:20,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:24:20,879 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-08-22 01:24:21,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:21,033 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-08-22 01:24:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:24:21,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 01:24:21,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:21,037 INFO L225 Difference]: With dead ends: 36 [2020-08-22 01:24:21,037 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 01:24:21,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:24:21,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 01:24:21,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-22 01:24:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 01:24:21,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-22 01:24:21,065 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-08-22 01:24:21,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:21,066 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-22 01:24:21,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:24:21,066 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-22 01:24:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 01:24:21,070 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:21,070 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] [2020-08-22 01:24:21,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:24:21,071 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:21,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:21,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-08-22 01:24:21,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:21,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552504151] [2020-08-22 01:24:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:24:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 01:24:21,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552504151] [2020-08-22 01:24:21,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:21,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 01:24:21,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090602077] [2020-08-22 01:24:21,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:24:21,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:21,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:24:21,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:24:21,226 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2020-08-22 01:24:21,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:21,316 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-08-22 01:24:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:24:21,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-08-22 01:24:21,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:21,319 INFO L225 Difference]: With dead ends: 58 [2020-08-22 01:24:21,319 INFO L226 Difference]: Without dead ends: 34 [2020-08-22 01:24:21,321 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 [2020-08-22 01:24:21,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-22 01:24:21,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-08-22 01:24:21,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 01:24:21,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-08-22 01:24:21,331 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-08-22 01:24:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:21,332 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-08-22 01:24:21,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:24:21,332 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-08-22 01:24:21,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 01:24:21,334 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:21,335 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] [2020-08-22 01:24:21,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:24:21,336 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:21,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:21,336 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-08-22 01:24:21,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:21,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027074723] [2020-08-22 01:24:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 01:24:21,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027074723] [2020-08-22 01:24:21,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:21,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 01:24:21,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774428164] [2020-08-22 01:24:21,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:24:21,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:21,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:24:21,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:24:21,482 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2020-08-22 01:24:21,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:21,665 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2020-08-22 01:24:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:24:21,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-22 01:24:21,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:21,669 INFO L225 Difference]: With dead ends: 54 [2020-08-22 01:24:21,669 INFO L226 Difference]: Without dead ends: 50 [2020-08-22 01:24:21,670 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 [2020-08-22 01:24:21,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-22 01:24:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-08-22 01:24:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 01:24:21,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-08-22 01:24:21,683 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 27 [2020-08-22 01:24:21,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:21,684 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-08-22 01:24:21,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:24:21,684 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-08-22 01:24:21,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-22 01:24:21,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:21,686 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] [2020-08-22 01:24:21,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:24:21,687 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:21,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:21,688 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-08-22 01:24:21,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:21,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483229807] [2020-08-22 01:24:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:24:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:24:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 01:24:21,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483229807] [2020-08-22 01:24:21,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:21,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 01:24:21,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691064533] [2020-08-22 01:24:21,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:24:21,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:21,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:24:21,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:24:21,889 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states. [2020-08-22 01:24:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:21,970 INFO L93 Difference]: Finished difference Result 94 states and 142 transitions. [2020-08-22 01:24:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 01:24:21,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-08-22 01:24:21,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:21,973 INFO L225 Difference]: With dead ends: 94 [2020-08-22 01:24:21,973 INFO L226 Difference]: Without dead ends: 52 [2020-08-22 01:24:21,975 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 [2020-08-22 01:24:21,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-22 01:24:21,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-08-22 01:24:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-22 01:24:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2020-08-22 01:24:21,988 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 39 [2020-08-22 01:24:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:21,989 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2020-08-22 01:24:21,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:24:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2020-08-22 01:24:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 01:24:21,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:21,992 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] [2020-08-22 01:24:21,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:24:21,993 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:21,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:21,993 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-08-22 01:24:21,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:21,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821783136] [2020-08-22 01:24:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,231 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 01:24:22,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821783136] [2020-08-22 01:24:22,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:22,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 01:24:22,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678329219] [2020-08-22 01:24:22,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:24:22,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:22,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:24:22,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:24:22,235 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand 8 states. [2020-08-22 01:24:22,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:22,375 INFO L93 Difference]: Finished difference Result 103 states and 158 transitions. [2020-08-22 01:24:22,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 01:24:22,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-22 01:24:22,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:22,378 INFO L225 Difference]: With dead ends: 103 [2020-08-22 01:24:22,378 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 01:24:22,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:24:22,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 01:24:22,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-08-22 01:24:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 01:24:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2020-08-22 01:24:22,391 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 40 [2020-08-22 01:24:22,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:22,392 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2020-08-22 01:24:22,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:24:22,392 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2020-08-22 01:24:22,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 01:24:22,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:22,394 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] [2020-08-22 01:24:22,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:24:22,395 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:22,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:22,395 INFO L82 PathProgramCache]: Analyzing trace with hash 208191613, now seen corresponding path program 1 times [2020-08-22 01:24:22,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:22,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913164780] [2020-08-22 01:24:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 01:24:22,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913164780] [2020-08-22 01:24:22,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:22,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 01:24:22,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169797889] [2020-08-22 01:24:22,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:24:22,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:22,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:24:22,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:24:22,516 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand 8 states. [2020-08-22 01:24:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:22,703 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-08-22 01:24:22,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:24:22,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-08-22 01:24:22,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:22,706 INFO L225 Difference]: With dead ends: 86 [2020-08-22 01:24:22,707 INFO L226 Difference]: Without dead ends: 82 [2020-08-22 01:24:22,710 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 [2020-08-22 01:24:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-22 01:24:22,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-08-22 01:24:22,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-22 01:24:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 118 transitions. [2020-08-22 01:24:22,743 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 118 transitions. Word has length 41 [2020-08-22 01:24:22,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:22,744 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 118 transitions. [2020-08-22 01:24:22,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:24:22,744 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-08-22 01:24:22,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 01:24:22,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:22,749 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] [2020-08-22 01:24:22,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:24:22,749 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:22,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:22,750 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2020-08-22 01:24:22,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:22,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399913985] [2020-08-22 01:24:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:24:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 01:24:22,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399913985] [2020-08-22 01:24:22,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:22,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 01:24:22,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511778066] [2020-08-22 01:24:22,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:24:22,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:22,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:24:22,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:24:22,913 INFO L87 Difference]: Start difference. First operand 79 states and 118 transitions. Second operand 8 states. [2020-08-22 01:24:23,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:23,040 INFO L93 Difference]: Finished difference Result 167 states and 288 transitions. [2020-08-22 01:24:23,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:24:23,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-08-22 01:24:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:23,043 INFO L225 Difference]: With dead ends: 167 [2020-08-22 01:24:23,043 INFO L226 Difference]: Without dead ends: 94 [2020-08-22 01:24:23,045 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 [2020-08-22 01:24:23,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-08-22 01:24:23,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2020-08-22 01:24:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-22 01:24:23,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 134 transitions. [2020-08-22 01:24:23,063 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 134 transitions. Word has length 54 [2020-08-22 01:24:23,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:23,063 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 134 transitions. [2020-08-22 01:24:23,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:24:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 134 transitions. [2020-08-22 01:24:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-22 01:24:23,067 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:23,067 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] [2020-08-22 01:24:23,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:24:23,067 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:23,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:23,068 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times [2020-08-22 01:24:23,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:23,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502465459] [2020-08-22 01:24:23,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 01:24:23,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502465459] [2020-08-22 01:24:23,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:23,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:24:23,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034858574] [2020-08-22 01:24:23,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:24:23,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:23,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:24:23,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:24:23,268 INFO L87 Difference]: Start difference. First operand 88 states and 134 transitions. Second operand 10 states. [2020-08-22 01:24:23,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:23,525 INFO L93 Difference]: Finished difference Result 188 states and 331 transitions. [2020-08-22 01:24:23,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 01:24:23,525 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-08-22 01:24:23,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:23,529 INFO L225 Difference]: With dead ends: 188 [2020-08-22 01:24:23,529 INFO L226 Difference]: Without dead ends: 109 [2020-08-22 01:24:23,530 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 [2020-08-22 01:24:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-22 01:24:23,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2020-08-22 01:24:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 01:24:23,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 158 transitions. [2020-08-22 01:24:23,579 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 158 transitions. Word has length 55 [2020-08-22 01:24:23,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:23,580 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 158 transitions. [2020-08-22 01:24:23,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:24:23,580 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 158 transitions. [2020-08-22 01:24:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-22 01:24:23,588 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:23,588 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] [2020-08-22 01:24:23,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:24:23,590 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:23,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:23,590 INFO L82 PathProgramCache]: Analyzing trace with hash -908952008, now seen corresponding path program 2 times [2020-08-22 01:24:23,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:23,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128132524] [2020-08-22 01:24:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-08-22 01:24:23,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128132524] [2020-08-22 01:24:23,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:23,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 01:24:23,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47674716] [2020-08-22 01:24:23,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:24:23,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:23,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:24:23,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:24:23,919 INFO L87 Difference]: Start difference. First operand 100 states and 158 transitions. Second operand 12 states. [2020-08-22 01:24:24,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:24,335 INFO L93 Difference]: Finished difference Result 199 states and 354 transitions. [2020-08-22 01:24:24,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 01:24:24,336 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-08-22 01:24:24,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:24,338 INFO L225 Difference]: With dead ends: 199 [2020-08-22 01:24:24,338 INFO L226 Difference]: Without dead ends: 86 [2020-08-22 01:24:24,340 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 [2020-08-22 01:24:24,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-22 01:24:24,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2020-08-22 01:24:24,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-22 01:24:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2020-08-22 01:24:24,350 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 82 [2020-08-22 01:24:24,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:24,351 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2020-08-22 01:24:24,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:24:24,351 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2020-08-22 01:24:24,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-22 01:24:24,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:24,353 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] [2020-08-22 01:24:24,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:24:24,354 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:24,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:24,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2119203654, now seen corresponding path program 2 times [2020-08-22 01:24:24,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:24,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862943493] [2020-08-22 01:24:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 01:24:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-08-22 01:24:24,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862943493] [2020-08-22 01:24:24,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:24,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:24:24,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014942657] [2020-08-22 01:24:24,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:24:24,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:24,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:24:24,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:24:24,606 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand 10 states. [2020-08-22 01:24:24,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:24,809 INFO L93 Difference]: Finished difference Result 142 states and 204 transitions. [2020-08-22 01:24:24,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:24:24,810 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2020-08-22 01:24:24,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:24,811 INFO L225 Difference]: With dead ends: 142 [2020-08-22 01:24:24,811 INFO L226 Difference]: Without dead ends: 78 [2020-08-22 01:24:24,812 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 [2020-08-22 01:24:24,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-22 01:24:24,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-22 01:24:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 01:24:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-08-22 01:24:24,831 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 110 [2020-08-22 01:24:24,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:24,832 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-08-22 01:24:24,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:24:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-08-22 01:24:24,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-22 01:24:24,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:24,836 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] [2020-08-22 01:24:24,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 01:24:24,836 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:24,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1263382818, now seen corresponding path program 3 times [2020-08-22 01:24:24,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:24,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330681170] [2020-08-22 01:24:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:24,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 01:24:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 01:24:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 01:24:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 133 proven. 373 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2020-08-22 01:24:25,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330681170] [2020-08-22 01:24:25,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:25,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 01:24:25,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429970926] [2020-08-22 01:24:25,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 01:24:25,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:25,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 01:24:25,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:24:25,518 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 15 states. [2020-08-22 01:24:26,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:26,173 INFO L93 Difference]: Finished difference Result 184 states and 282 transitions. [2020-08-22 01:24:26,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 01:24:26,173 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 192 [2020-08-22 01:24:26,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:26,175 INFO L225 Difference]: With dead ends: 184 [2020-08-22 01:24:26,176 INFO L226 Difference]: Without dead ends: 111 [2020-08-22 01:24:26,177 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 [2020-08-22 01:24:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-22 01:24:26,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-08-22 01:24:26,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-22 01:24:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 133 transitions. [2020-08-22 01:24:26,188 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 133 transitions. Word has length 192 [2020-08-22 01:24:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:26,188 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 133 transitions. [2020-08-22 01:24:26,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 01:24:26,189 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 133 transitions. [2020-08-22 01:24:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 01:24:26,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:26,191 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] [2020-08-22 01:24:26,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 01:24:26,192 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:26,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2102107778, now seen corresponding path program 1 times [2020-08-22 01:24:26,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:26,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206050279] [2020-08-22 01:24:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 01:24:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 109 proven. 85 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-08-22 01:24:26,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206050279] [2020-08-22 01:24:26,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:26,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 01:24:26,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555964779] [2020-08-22 01:24:26,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:24:26,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:26,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:24:26,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:24:26,479 INFO L87 Difference]: Start difference. First operand 99 states and 133 transitions. Second operand 11 states. [2020-08-22 01:24:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:26,739 INFO L93 Difference]: Finished difference Result 188 states and 266 transitions. [2020-08-22 01:24:26,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:24:26,740 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-22 01:24:26,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:26,742 INFO L225 Difference]: With dead ends: 188 [2020-08-22 01:24:26,742 INFO L226 Difference]: Without dead ends: 101 [2020-08-22 01:24:26,744 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 [2020-08-22 01:24:26,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-08-22 01:24:26,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2020-08-22 01:24:26,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-22 01:24:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-08-22 01:24:26,755 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 136 [2020-08-22 01:24:26,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:26,756 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-08-22 01:24:26,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:24:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-08-22 01:24:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 01:24:26,759 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:26,759 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] [2020-08-22 01:24:26,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 01:24:26,760 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:26,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:26,761 INFO L82 PathProgramCache]: Analyzing trace with hash 677703633, now seen corresponding path program 2 times [2020-08-22 01:24:26,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:26,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735156744] [2020-08-22 01:24:26,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:26,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 01:24:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 138 proven. 250 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2020-08-22 01:24:27,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735156744] [2020-08-22 01:24:27,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:27,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 01:24:27,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320106946] [2020-08-22 01:24:27,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 01:24:27,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:27,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 01:24:27,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:24:27,215 INFO L87 Difference]: Start difference. First operand 98 states and 130 transitions. Second operand 14 states. [2020-08-22 01:24:27,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:27,758 INFO L93 Difference]: Finished difference Result 217 states and 326 transitions. [2020-08-22 01:24:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 01:24:27,759 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 177 [2020-08-22 01:24:27,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:27,761 INFO L225 Difference]: With dead ends: 217 [2020-08-22 01:24:27,761 INFO L226 Difference]: Without dead ends: 124 [2020-08-22 01:24:27,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2020-08-22 01:24:27,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-22 01:24:27,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2020-08-22 01:24:27,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-22 01:24:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 144 transitions. [2020-08-22 01:24:27,776 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 144 transitions. Word has length 177 [2020-08-22 01:24:27,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:27,776 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 144 transitions. [2020-08-22 01:24:27,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 01:24:27,776 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 144 transitions. [2020-08-22 01:24:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 01:24:27,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:27,779 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] [2020-08-22 01:24:27,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 01:24:27,779 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:27,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:27,780 INFO L82 PathProgramCache]: Analyzing trace with hash -529934979, now seen corresponding path program 3 times [2020-08-22 01:24:27,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:27,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793618904] [2020-08-22 01:24:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:27,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 144 proven. 139 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-08-22 01:24:28,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793618904] [2020-08-22 01:24:28,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:28,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 01:24:28,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703663058] [2020-08-22 01:24:28,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 01:24:28,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:28,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 01:24:28,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:24:28,128 INFO L87 Difference]: Start difference. First operand 107 states and 144 transitions. Second operand 14 states. [2020-08-22 01:24:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:28,588 INFO L93 Difference]: Finished difference Result 211 states and 302 transitions. [2020-08-22 01:24:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 01:24:28,589 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 150 [2020-08-22 01:24:28,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:28,591 INFO L225 Difference]: With dead ends: 211 [2020-08-22 01:24:28,591 INFO L226 Difference]: Without dead ends: 114 [2020-08-22 01:24:28,595 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 [2020-08-22 01:24:28,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-22 01:24:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2020-08-22 01:24:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-22 01:24:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 147 transitions. [2020-08-22 01:24:28,606 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 147 transitions. Word has length 150 [2020-08-22 01:24:28,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:28,607 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 147 transitions. [2020-08-22 01:24:28,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 01:24:28,607 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 147 transitions. [2020-08-22 01:24:28,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 01:24:28,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:28,609 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] [2020-08-22 01:24:28,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 01:24:28,610 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:28,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:28,610 INFO L82 PathProgramCache]: Analyzing trace with hash 307857833, now seen corresponding path program 4 times [2020-08-22 01:24:28,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:28,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079776337] [2020-08-22 01:24:28,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:28,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2020-08-22 01:24:29,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079776337] [2020-08-22 01:24:29,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:29,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-22 01:24:29,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426768636] [2020-08-22 01:24:29,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 01:24:29,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:29,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 01:24:29,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-08-22 01:24:29,839 INFO L87 Difference]: Start difference. First operand 111 states and 147 transitions. Second operand 28 states. [2020-08-22 01:24:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:30,481 INFO L93 Difference]: Finished difference Result 124 states and 167 transitions. [2020-08-22 01:24:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 01:24:30,482 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 177 [2020-08-22 01:24:30,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:30,484 INFO L225 Difference]: With dead ends: 124 [2020-08-22 01:24:30,485 INFO L226 Difference]: Without dead ends: 120 [2020-08-22 01:24:30,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 01:24:30,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-08-22 01:24:30,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2020-08-22 01:24:30,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-22 01:24:30,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2020-08-22 01:24:30,497 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 177 [2020-08-22 01:24:30,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:30,497 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2020-08-22 01:24:30,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 01:24:30,498 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2020-08-22 01:24:30,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-08-22 01:24:30,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:30,501 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] [2020-08-22 01:24:30,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 01:24:30,501 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:30,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:30,502 INFO L82 PathProgramCache]: Analyzing trace with hash -678687486, now seen corresponding path program 5 times [2020-08-22 01:24:30,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:30,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080976403] [2020-08-22 01:24:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 207 proven. 371 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2020-08-22 01:24:31,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080976403] [2020-08-22 01:24:31,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:31,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 01:24:31,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082102403] [2020-08-22 01:24:31,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 01:24:31,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:31,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 01:24:31,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:24:31,061 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand 16 states. [2020-08-22 01:24:31,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:31,812 INFO L93 Difference]: Finished difference Result 245 states and 365 transitions. [2020-08-22 01:24:31,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 01:24:31,813 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 218 [2020-08-22 01:24:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:31,816 INFO L225 Difference]: With dead ends: 245 [2020-08-22 01:24:31,816 INFO L226 Difference]: Without dead ends: 134 [2020-08-22 01:24:31,819 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 [2020-08-22 01:24:31,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-08-22 01:24:31,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2020-08-22 01:24:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 01:24:31,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 159 transitions. [2020-08-22 01:24:31,829 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 159 transitions. Word has length 218 [2020-08-22 01:24:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:31,831 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 159 transitions. [2020-08-22 01:24:31,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 01:24:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 159 transitions. [2020-08-22 01:24:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-08-22 01:24:31,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:31,836 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] [2020-08-22 01:24:31,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 01:24:31,836 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:31,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:31,836 INFO L82 PathProgramCache]: Analyzing trace with hash -806788011, now seen corresponding path program 6 times [2020-08-22 01:24:31,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:31,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948001964] [2020-08-22 01:24:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:31,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 01:24:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 01:24:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 177 proven. 317 refuted. 0 times theorem prover too weak. 1315 trivial. 0 not checked. [2020-08-22 01:24:32,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948001964] [2020-08-22 01:24:32,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:32,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 01:24:32,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589922523] [2020-08-22 01:24:32,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:24:32,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:32,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:24:32,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:24:32,468 INFO L87 Difference]: Start difference. First operand 120 states and 159 transitions. Second operand 11 states. [2020-08-22 01:24:32,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:32,792 INFO L93 Difference]: Finished difference Result 233 states and 321 transitions. [2020-08-22 01:24:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 01:24:32,793 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2020-08-22 01:24:32,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:32,795 INFO L225 Difference]: With dead ends: 233 [2020-08-22 01:24:32,795 INFO L226 Difference]: Without dead ends: 122 [2020-08-22 01:24:32,796 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 [2020-08-22 01:24:32,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-22 01:24:32,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2020-08-22 01:24:32,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-22 01:24:32,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 155 transitions. [2020-08-22 01:24:32,804 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 155 transitions. Word has length 260 [2020-08-22 01:24:32,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:32,805 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 155 transitions. [2020-08-22 01:24:32,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:24:32,807 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 155 transitions. [2020-08-22 01:24:32,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-08-22 01:24:32,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:24:32,811 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] [2020-08-22 01:24:32,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 01:24:32,812 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:24:32,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:24:32,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1614185823, now seen corresponding path program 7 times [2020-08-22 01:24:32,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:24:32,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179316721] [2020-08-22 01:24:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:24:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:24:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:32,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:24:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:24:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 01:24:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:24:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:24:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 01:24:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:24:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:24:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:24:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 132 proven. 466 refuted. 0 times theorem prover too weak. 1618 trivial. 0 not checked. [2020-08-22 01:24:33,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179316721] [2020-08-22 01:24:33,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:24:33,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 01:24:33,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636807803] [2020-08-22 01:24:33,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:24:33,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:24:33,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:24:33,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:24:33,517 INFO L87 Difference]: Start difference. First operand 119 states and 155 transitions. Second operand 12 states. [2020-08-22 01:24:33,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:24:33,874 INFO L93 Difference]: Finished difference Result 141 states and 187 transitions. [2020-08-22 01:24:33,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:24:33,875 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 286 [2020-08-22 01:24:33,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:24:33,876 INFO L225 Difference]: With dead ends: 141 [2020-08-22 01:24:33,876 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 01:24:33,877 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 [2020-08-22 01:24:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 01:24:33,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 01:24:33,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 01:24:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 01:24:33,878 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 286 [2020-08-22 01:24:33,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:24:33,878 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 01:24:33,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:24:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 01:24:33,879 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 01:24:33,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 01:24:33,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 01:24:34,998 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 29 [2020-08-22 01:24:35,651 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 32 [2020-08-22 01:24:35,657 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 01:24:35,658 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 01:24:35,658 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 01:24:35,658 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 01:24:35,659 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 01:24:35,659 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 01:24:35,659 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-08-22 01:24:35,660 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2020-08-22 01:24:35,660 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2020-08-22 01:24:35,660 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2020-08-22 01:24:35,660 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-08-22 01:24:35,660 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-08-22 01:24:35,661 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 6 main_~x~0) (<= main_~x~0 6)) [2020-08-22 01:24:35,661 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-08-22 01:24:35,661 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2020-08-22 01:24:35,661 INFO L271 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-08-22 01:24:35,661 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 1 fibo2_~n)) [2020-08-22 01:24:35,662 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-08-22 01:24:35,662 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))) [2020-08-22 01:24:35,662 INFO L268 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-08-22 01:24:35,662 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-08-22 01:24:35,662 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-08-22 01:24:35,662 INFO L268 CegarLoopResult]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2020-08-22 01:24:35,663 INFO L268 CegarLoopResult]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2020-08-22 01:24:35,663 INFO L271 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-08-22 01:24:35,663 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 1)) (= fibo1_~n |fibo1_#in~n|)) [2020-08-22 01:24:35,663 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-08-22 01:24:35,664 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)))) [2020-08-22 01:24:35,664 INFO L268 CegarLoopResult]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2020-08-22 01:24:35,664 INFO L268 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-08-22 01:24:35,664 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-08-22 01:24:35,665 INFO L268 CegarLoopResult]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-08-22 01:24:35,665 INFO L268 CegarLoopResult]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2020-08-22 01:24:35,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:24:35 BoogieIcfgContainer [2020-08-22 01:24:35,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:24:35,676 INFO L168 Benchmark]: Toolchain (without parser) took 16405.19 ms. Allocated memory was 139.5 MB in the beginning and 483.4 MB in the end (delta: 343.9 MB). Free memory was 103.2 MB in the beginning and 267.2 MB in the end (delta: -164.0 MB). Peak memory consumption was 358.0 MB. Max. memory is 7.1 GB. [2020-08-22 01:24:35,677 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 01:24:35,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.65 ms. Allocated memory is still 139.5 MB. Free memory was 102.8 MB in the beginning and 93.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:24:35,678 INFO L168 Benchmark]: Boogie Preprocessor took 123.42 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.3 MB in the beginning and 181.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-22 01:24:35,679 INFO L168 Benchmark]: RCFGBuilder took 412.39 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 168.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-22 01:24:35,680 INFO L168 Benchmark]: TraceAbstraction took 15557.75 ms. Allocated memory was 202.9 MB in the beginning and 483.4 MB in the end (delta: 280.5 MB). Free memory was 167.7 MB in the beginning and 267.2 MB in the end (delta: -99.5 MB). Peak memory consumption was 359.1 MB. Max. memory is 7.1 GB. [2020-08-22 01:24:35,683 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 302.65 ms. Allocated memory is still 139.5 MB. Free memory was 102.8 MB in the beginning and 93.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.42 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.3 MB in the beginning and 181.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 412.39 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 168.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15557.75 ms. Allocated memory was 202.9 MB in the beginning and 483.4 MB in the end (delta: 280.5 MB). Free memory was 167.7 MB in the beginning and 267.2 MB in the end (delta: -99.5 MB). Peak memory consumption was 359.1 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: 13.6s, OverallIterations: 19, TraceHistogramMax: 21, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 636 SDtfs, 595 SDslu, 4407 SDs, 0 SdLazy, 4321 SolverSat, 451 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 973 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 3.7s 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: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 98 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 647 PreInvPairs, 912 NumberOfFragments, 138 HoareAnnotationTreeSize, 647 FomulaSimplifications, 2845 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 11 FomulaSimplificationsInter, 4707 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.1s 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...