/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:19:03,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:19:03,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:19:03,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:19:03,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:19:03,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:19:03,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:19:03,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:19:03,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:19:03,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:19:03,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:19:03,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:19:03,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:19:03,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:19:03,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:19:03,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:19:03,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:19:03,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:19:03,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:19:03,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:19:03,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:19:03,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:19:03,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:19:03,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:19:03,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:19:03,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:19:03,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:19:03,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:19:03,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:19:03,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:19:03,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:19:03,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:19:03,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:19:03,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:19:03,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:19:03,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:19:03,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:19:03,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:19:03,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:19:03,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:19:03,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:19:03,369 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 [2020-09-25 02:19:03,395 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:19:03,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:19:03,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:19:03,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:19:03,398 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:19:03,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:19:03,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:19:03,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:19:03,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:19:03,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:19:03,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:19:03,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:19:03,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:19:03,400 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:19:03,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:19:03,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:19:03,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:19:03,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:19:03,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:19:03,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:19:03,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:19:03,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:19:03,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:19:03,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:19:03,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:19:03,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:19:03,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:19:03,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:19:03,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:19:03,403 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:19:03,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:19:03,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:19:03,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:19:03,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:19:03,892 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:19:03,893 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case.i [2020-09-25 02:19:03,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d72bc7676/2ab46c1b1fe14a7d8bfe19da4425fff6/FLAG24bfd0d79 [2020-09-25 02:19:04,582 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:19:04,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case.i [2020-09-25 02:19:04,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d72bc7676/2ab46c1b1fe14a7d8bfe19da4425fff6/FLAG24bfd0d79 [2020-09-25 02:19:04,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d72bc7676/2ab46c1b1fe14a7d8bfe19da4425fff6 [2020-09-25 02:19:04,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:19:04,934 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:19:04,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:04,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:19:04,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:19:04,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:04" (1/1) ... [2020-09-25 02:19:04,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1497b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:04, skipping insertion in model container [2020-09-25 02:19:04,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:04" (1/1) ... [2020-09-25 02:19:04,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:19:04,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:19:05,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:05,251 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:19:05,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:05,287 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:19:05,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:05 WrapperNode [2020-09-25 02:19:05,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:05,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:19:05,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:19:05,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:19:05,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:05" (1/1) ... [2020-09-25 02:19:05,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:05" (1/1) ... [2020-09-25 02:19:05,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:05" (1/1) ... [2020-09-25 02:19:05,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:05" (1/1) ... [2020-09-25 02:19:05,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:05" (1/1) ... [2020-09-25 02:19:05,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:05" (1/1) ... [2020-09-25 02:19:05,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:05" (1/1) ... [2020-09-25 02:19:05,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:19:05,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:19:05,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:19:05,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:19:05,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:19:05,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:19:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:19:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:19:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:19:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:19:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:19:05,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 02:19:05,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:19:05,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:19:05,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:19:05,706 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:19:05,707 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:19:05,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:05 BoogieIcfgContainer [2020-09-25 02:19:05,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:19:05,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:19:05,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:19:05,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:19:05,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:19:04" (1/3) ... [2020-09-25 02:19:05,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab74b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:05, skipping insertion in model container [2020-09-25 02:19:05,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:05" (2/3) ... [2020-09-25 02:19:05,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab74b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:05, skipping insertion in model container [2020-09-25 02:19:05,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:05" (3/3) ... [2020-09-25 02:19:05,755 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case.i [2020-09-25 02:19:05,786 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:19:05,801 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:19:05,826 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:19:05,867 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:19:05,867 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:19:05,868 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:19:05,868 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:19:05,868 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:19:05,869 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:19:05,869 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:19:05,869 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:19:05,889 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 02:19:05,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-25 02:19:05,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:05,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:05,897 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:05,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:05,904 INFO L82 PathProgramCache]: Analyzing trace with hash -290415040, now seen corresponding path program 1 times [2020-09-25 02:19:05,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:05,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698793639] [2020-09-25 02:19:05,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:06,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:06,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:06,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:19:06,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:19:06,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 02:19:06,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:06,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:19:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:06,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:19:06,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:06,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:06,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:19:06,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:06,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:19:06,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:06,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698793639] [2020-09-25 02:19:06,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:06,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 02:19:06,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690855469] [2020-09-25 02:19:06,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 02:19:06,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:06,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 02:19:06,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 02:19:06,320 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-09-25 02:19:06,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:06,351 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-09-25 02:19:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 02:19:06,353 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-09-25 02:19:06,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:06,364 INFO L225 Difference]: With dead ends: 38 [2020-09-25 02:19:06,365 INFO L226 Difference]: Without dead ends: 21 [2020-09-25 02:19:06,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 02:19:06,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-25 02:19:06,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-25 02:19:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-25 02:19:06,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-09-25 02:19:06,424 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2020-09-25 02:19:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:06,425 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-09-25 02:19:06,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 02:19:06,426 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-09-25 02:19:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-25 02:19:06,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:06,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:06,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:19:06,428 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:06,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:06,429 INFO L82 PathProgramCache]: Analyzing trace with hash -304267855, now seen corresponding path program 1 times [2020-09-25 02:19:06,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:06,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339645063] [2020-09-25 02:19:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:06,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:06,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:06,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 02:19:06,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:06,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 02:19:06,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:06,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:19:06,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:19:06,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:19:06,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:06,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:06,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:06,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:06,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:19:06,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:06,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:19:06,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:06,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:06,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339645063] [2020-09-25 02:19:06,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:06,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:19:06,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812402453] [2020-09-25 02:19:06,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:19:06,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:06,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:19:06,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:19:06,752 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-09-25 02:19:06,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:06,818 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-09-25 02:19:06,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:19:06,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-25 02:19:06,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:06,821 INFO L225 Difference]: With dead ends: 28 [2020-09-25 02:19:06,821 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 02:19:06,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:19:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 02:19:06,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-09-25 02:19:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 02:19:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-25 02:19:06,829 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2020-09-25 02:19:06,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:06,830 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-25 02:19:06,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:19:06,830 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-25 02:19:06,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 02:19:06,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:06,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:06,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:19:06,832 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:06,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:06,832 INFO L82 PathProgramCache]: Analyzing trace with hash -887516915, now seen corresponding path program 1 times [2020-09-25 02:19:06,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:06,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853675937] [2020-09-25 02:19:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:06,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:07,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:07,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 02:19:07,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:07,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 02:19:07,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:19:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:19:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:19:07,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:07,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:07,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:07,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:07,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:19:07,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:07,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:19:07,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:07,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:07,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853675937] [2020-09-25 02:19:07,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:19:07,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:19:07,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914387652] [2020-09-25 02:19:07,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:19:07,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:07,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:19:07,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:19:07,300 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 11 states. [2020-09-25 02:19:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:07,578 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-09-25 02:19:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:19:07,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-09-25 02:19:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:07,580 INFO L225 Difference]: With dead ends: 34 [2020-09-25 02:19:07,580 INFO L226 Difference]: Without dead ends: 29 [2020-09-25 02:19:07,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:19:07,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-25 02:19:07,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-09-25 02:19:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:19:07,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-25 02:19:07,588 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2020-09-25 02:19:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:07,588 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-25 02:19:07,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:19:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-25 02:19:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 02:19:07,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:07,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:07,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:19:07,590 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:07,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:07,591 INFO L82 PathProgramCache]: Analyzing trace with hash -507920327, now seen corresponding path program 1 times [2020-09-25 02:19:07,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:07,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948309735] [2020-09-25 02:19:07,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:07,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:07,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:07,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 02:19:07,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:07,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 02:19:07,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:07,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:19:07,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 02:19:07,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:19:07,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:07,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:07,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:07,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:07,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:19:07,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:07,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:19:07,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:07,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948309735] [2020-09-25 02:19:07,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:07,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:19:07,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897136349] [2020-09-25 02:19:07,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:19:07,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:07,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:19:07,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:19:07,665 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 3 states. [2020-09-25 02:19:07,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:07,687 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-09-25 02:19:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:19:07,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-25 02:19:07,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:07,689 INFO L225 Difference]: With dead ends: 40 [2020-09-25 02:19:07,689 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 02:19:07,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:19:07,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 02:19:07,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 02:19:07,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:19:07,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 02:19:07,696 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2020-09-25 02:19:07,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:07,696 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 02:19:07,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:19:07,697 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 02:19:07,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 02:19:07,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:07,698 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:07,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:19:07,698 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:07,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:07,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1934159721, now seen corresponding path program 2 times [2020-09-25 02:19:07,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:07,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142843588] [2020-09-25 02:19:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:07,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:07,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:07,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 02:19:07,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:07,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 02:19:07,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:19:07,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:19:07,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:19:07,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:08,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:08,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:08,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:19:08,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:08,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:19:08,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:08,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:08,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:08,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:08,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:08,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142843588] [2020-09-25 02:19:08,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:19:08,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 02:19:08,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548801387] [2020-09-25 02:19:08,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 02:19:08,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:08,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 02:19:08,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:19:08,242 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 14 states. [2020-09-25 02:19:08,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:08,674 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-09-25 02:19:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 02:19:08,674 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-09-25 02:19:08,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:08,675 INFO L225 Difference]: With dead ends: 41 [2020-09-25 02:19:08,676 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 02:19:08,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-09-25 02:19:08,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 02:19:08,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-25 02:19:08,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:19:08,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-09-25 02:19:08,683 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 26 [2020-09-25 02:19:08,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:08,683 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-09-25 02:19:08,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 02:19:08,684 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-09-25 02:19:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 02:19:08,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:08,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:08,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:19:08,685 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:08,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:08,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1064709469, now seen corresponding path program 1 times [2020-09-25 02:19:08,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:08,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995984578] [2020-09-25 02:19:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:08,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:08,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:08,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 02:19:08,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:08,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 02:19:08,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:19:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 02:19:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:19:08,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:08,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:08,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:08,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:08,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:19:08,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:08,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:19:08,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:08,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:08,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:08,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:08,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995984578] [2020-09-25 02:19:08,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:19:08,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:19:08,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102847042] [2020-09-25 02:19:08,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:19:08,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:08,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:19:08,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:19:08,799 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 5 states. [2020-09-25 02:19:08,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:08,849 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-09-25 02:19:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:19:08,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 02:19:08,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:08,850 INFO L225 Difference]: With dead ends: 46 [2020-09-25 02:19:08,851 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 02:19:08,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:19:08,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 02:19:08,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-25 02:19:08,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:19:08,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-25 02:19:08,857 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 27 [2020-09-25 02:19:08,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:08,857 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-25 02:19:08,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:19:08,857 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-25 02:19:08,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 02:19:08,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:08,859 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:08,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:19:08,859 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:08,860 INFO L82 PathProgramCache]: Analyzing trace with hash -2001266491, now seen corresponding path program 3 times [2020-09-25 02:19:08,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:08,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236582448] [2020-09-25 02:19:08,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:08,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:09,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:09,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:19:09,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 02:19:09,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:19:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:19:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:19:09,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:09,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:09,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:09,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:09,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:19:09,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:09,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:19:09,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:09,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:09,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:09,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:09,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 02:19:09,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236582448] [2020-09-25 02:19:09,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:19:09,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:19:09,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861050551] [2020-09-25 02:19:09,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:19:09,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:09,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:19:09,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:19:09,410 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-25 02:19:09,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:09,726 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-09-25 02:19:09,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:19:09,727 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-09-25 02:19:09,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:09,728 INFO L225 Difference]: With dead ends: 46 [2020-09-25 02:19:09,728 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 02:19:09,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-09-25 02:19:09,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 02:19:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-25 02:19:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 02:19:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-09-25 02:19:09,734 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 32 [2020-09-25 02:19:09,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:09,735 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-09-25 02:19:09,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:19:09,735 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-09-25 02:19:09,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:19:09,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:09,736 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:09,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:19:09,737 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:09,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:09,737 INFO L82 PathProgramCache]: Analyzing trace with hash -674418815, now seen corresponding path program 2 times [2020-09-25 02:19:09,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:09,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127790565] [2020-09-25 02:19:09,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:09,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:09,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:09,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 02:19:09,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:09,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 02:19:09,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:09,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:19:09,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 02:19:09,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 02:19:09,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:09,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:09,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:09,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:09,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:19:09,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:19:09,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:09,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:09,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:19:09,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127790565] [2020-09-25 02:19:09,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:19:09,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:19:09,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067898776] [2020-09-25 02:19:09,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:19:09,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:09,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:19:09,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:19:09,902 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 7 states. [2020-09-25 02:19:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:09,974 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-09-25 02:19:09,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:19:09,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 02:19:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:09,975 INFO L225 Difference]: With dead ends: 56 [2020-09-25 02:19:09,976 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 02:19:09,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:19:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 02:19:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 02:19:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 02:19:09,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-09-25 02:19:09,982 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 33 [2020-09-25 02:19:09,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:09,982 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-09-25 02:19:09,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:19:09,983 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-09-25 02:19:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 02:19:09,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:09,984 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:09,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:19:09,985 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:09,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:09,985 INFO L82 PathProgramCache]: Analyzing trace with hash -809826651, now seen corresponding path program 3 times [2020-09-25 02:19:09,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:09,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900312127] [2020-09-25 02:19:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:19:09,999 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:19:09,999 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:19:10,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:19:10,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:19:10 BoogieIcfgContainer [2020-09-25 02:19:10,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:19:10,031 INFO L168 Benchmark]: Toolchain (without parser) took 5099.39 ms. Allocated memory was 140.5 MB in the beginning and 244.8 MB in the end (delta: 104.3 MB). Free memory was 104.2 MB in the beginning and 153.0 MB in the end (delta: -48.8 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:10,031 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 02:19:10,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.47 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 94.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:10,033 INFO L168 Benchmark]: Boogie Preprocessor took 120.22 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.2 MB in the beginning and 183.4 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:10,034 INFO L168 Benchmark]: RCFGBuilder took 303.85 ms. Allocated memory is still 203.4 MB. Free memory was 183.4 MB in the beginning and 170.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:10,035 INFO L168 Benchmark]: TraceAbstraction took 4297.78 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 170.4 MB in the beginning and 153.0 MB in the end (delta: 17.4 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:10,039 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 352.47 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 94.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.22 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.2 MB in the beginning and 183.4 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 303.85 ms. Allocated memory is still 203.4 MB. Free memory was 183.4 MB in the beginning and 170.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4297.78 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 170.4 MB in the beginning and 153.0 MB in the end (delta: 17.4 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND TRUE i==4 [L15] sn=-10 [L13] i++ [L13] COND FALSE !(i<=n) [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.1s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 145 SDtfs, 48 SDslu, 468 SDs, 0 SdLazy, 421 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 11 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 21754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 23/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...