/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/drift_tenth.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:14:41,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:14:41,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:14:42,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:14:42,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:14:42,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:14:42,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:14:42,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:14:42,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:14:42,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:14:42,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:14:42,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:14:42,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:14:42,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:14:42,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:14:42,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:14:42,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:14:42,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:14:42,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:14:42,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:14:42,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:14:42,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:14:42,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:14:42,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:14:42,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:14:42,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:14:42,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:14:42,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:14:42,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:14:42,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:14:42,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:14:42,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:14:42,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:14:42,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:14:42,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:14:42,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:14:42,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:14:42,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:14:42,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:14:42,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:14:42,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:14:42,078 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 [2020-10-13 10:14:42,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:14:42,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:14:42,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:14:42,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:14:42,103 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:14:42,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:14:42,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:14:42,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:14:42,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:14:42,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:14:42,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:14:42,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:14:42,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:14:42,105 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:14:42,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:14:42,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:14:42,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:14:42,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:14:42,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:14:42,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:14:42,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:14:42,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:14:42,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:14:42,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:14:42,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:14:42,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:14:42,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:14:42,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:14:42,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:14:42,108 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-13 10:14:42,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:14:42,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:14:42,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:14:42,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:14:42,451 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:14:42,452 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/drift_tenth.c [2020-10-13 10:14:42,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44c71dbac/34da9cdb5a684e4d9de9d6abcfc85d21/FLAG953d9413b [2020-10-13 10:14:43,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:14:43,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/drift_tenth.c [2020-10-13 10:14:43,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44c71dbac/34da9cdb5a684e4d9de9d6abcfc85d21/FLAG953d9413b [2020-10-13 10:14:43,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44c71dbac/34da9cdb5a684e4d9de9d6abcfc85d21 [2020-10-13 10:14:43,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:14:43,475 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:14:43,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:14:43,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:14:43,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:14:43,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:14:43" (1/1) ... [2020-10-13 10:14:43,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ad693f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:43, skipping insertion in model container [2020-10-13 10:14:43,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:14:43" (1/1) ... [2020-10-13 10:14:43,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:14:43,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:14:43,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:14:43,787 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:14:43,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:14:43,822 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:14:43,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:43 WrapperNode [2020-10-13 10:14:43,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:14:43,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:14:43,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:14:43,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:14:43,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:43" (1/1) ... [2020-10-13 10:14:43,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:43" (1/1) ... [2020-10-13 10:14:43,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:43" (1/1) ... [2020-10-13 10:14:43,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:43" (1/1) ... [2020-10-13 10:14:43,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:43" (1/1) ... [2020-10-13 10:14:43,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:43" (1/1) ... [2020-10-13 10:14:43,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:43" (1/1) ... [2020-10-13 10:14:43,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:14:43,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:14:43,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:14:43,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:14:43,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:43" (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 [2020-10-13 10:14:44,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:14:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:14:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 10:14:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:14:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:14:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:14:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:14:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:14:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:14:44,239 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:14:44,240 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 10:14:44,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:14:44 BoogieIcfgContainer [2020-10-13 10:14:44,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:14:44,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:14:44,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:14:44,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:14:44,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:14:43" (1/3) ... [2020-10-13 10:14:44,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a63b4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:14:44, skipping insertion in model container [2020-10-13 10:14:44,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:14:43" (2/3) ... [2020-10-13 10:14:44,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a63b4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:14:44, skipping insertion in model container [2020-10-13 10:14:44,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:14:44" (3/3) ... [2020-10-13 10:14:44,256 INFO L109 eAbstractionObserver]: Analyzing ICFG drift_tenth.c [2020-10-13 10:14:44,269 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:14:44,278 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:14:44,293 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:14:44,321 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:14:44,321 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:14:44,321 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:14:44,322 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:14:44,322 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:14:44,322 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:14:44,323 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:14:44,323 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:14:44,346 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-13 10:14:44,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:14:44,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:44,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:44,356 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:44,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:44,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2020-10-13 10:14:44,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:44,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692552389] [2020-10-13 10:14:44,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:44,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:44,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:44,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:14:44,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 10:14:44,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:14:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:44,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:14:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:44,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:44,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:14:44,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:44,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:14:44,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:44,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:44,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:44,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:44,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:14:44,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692552389] [2020-10-13 10:14:44,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:14:44,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-13 10:14:44,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071235724] [2020-10-13 10:14:44,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-13 10:14:44,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:44,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-13 10:14:44,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-13 10:14:44,577 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-13 10:14:44,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:44,598 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-10-13 10:14:44,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-13 10:14:44,600 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-13 10:14:44,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:44,608 INFO L225 Difference]: With dead ends: 31 [2020-10-13 10:14:44,608 INFO L226 Difference]: Without dead ends: 12 [2020-10-13 10:14:44,611 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 [2020-10-13 10:14:44,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-13 10:14:44,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-13 10:14:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-13 10:14:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-13 10:14:44,652 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-10-13 10:14:44,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:44,652 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-13 10:14:44,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-13 10:14:44,653 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-13 10:14:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:14:44,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:44,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:44,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:14:44,654 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:44,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:44,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1877050693, now seen corresponding path program 1 times [2020-10-13 10:14:44,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:44,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235073719] [2020-10-13 10:14:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:44,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:44,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:44,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:14:44,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:44,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 10:14:44,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:14:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:14:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:14:44,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:44,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:44,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:44,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:44,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:14:44,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:44,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:14:44,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:44,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:44,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:44,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:14:44,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235073719] [2020-10-13 10:14:44,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:14:44,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:14:44,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769324783] [2020-10-13 10:14:44,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:14:44,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:44,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:14:44,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:14:44,758 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2020-10-13 10:14:44,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:44,779 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-13 10:14:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:14:44,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-13 10:14:44,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:44,782 INFO L225 Difference]: With dead ends: 19 [2020-10-13 10:14:44,782 INFO L226 Difference]: Without dead ends: 14 [2020-10-13 10:14:44,783 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 [2020-10-13 10:14:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-13 10:14:44,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-13 10:14:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-13 10:14:44,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-13 10:14:44,789 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-10-13 10:14:44,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:44,790 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-13 10:14:44,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:14:44,791 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-13 10:14:44,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-13 10:14:44,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:44,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:44,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:14:44,793 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:44,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:44,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1175909113, now seen corresponding path program 1 times [2020-10-13 10:14:44,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:44,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847240639] [2020-10-13 10:14:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:44,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:44,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:44,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:14:44,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:44,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 10:14:44,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:44,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:14:44,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:14:44,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:14:44,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:44,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:44,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:44,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:44,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:14:44,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:44,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:14:44,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:44,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:44,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:44,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:14:44,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847240639] [2020-10-13 10:14:44,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:14:44,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 10:14:44,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848508065] [2020-10-13 10:14:44,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:14:44,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:44,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:14:44,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:14:44,984 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-10-13 10:14:45,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:45,015 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-13 10:14:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:14:45,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-13 10:14:45,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:45,018 INFO L225 Difference]: With dead ends: 21 [2020-10-13 10:14:45,018 INFO L226 Difference]: Without dead ends: 16 [2020-10-13 10:14:45,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:14:45,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-13 10:14:45,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-13 10:14:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-13 10:14:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-13 10:14:45,025 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2020-10-13 10:14:45,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:45,025 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-13 10:14:45,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:14:45,025 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-13 10:14:45,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:14:45,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:45,027 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:45,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:14:45,027 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:45,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:45,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1607619511, now seen corresponding path program 2 times [2020-10-13 10:14:45,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:45,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198599678] [2020-10-13 10:14:45,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:45,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:45,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:45,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:14:45,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:45,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 10:14:45,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:45,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:14:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:14:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:14:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:45,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:45,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:45,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:45,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:14:45,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:45,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:14:45,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:45,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:45,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:45,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:45,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:14:45,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198599678] [2020-10-13 10:14:45,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:14:45,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 10:14:45,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735811604] [2020-10-13 10:14:45,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:14:45,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:45,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:14:45,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:14:45,187 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2020-10-13 10:14:45,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:45,217 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-13 10:14:45,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:14:45,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-13 10:14:45,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:45,219 INFO L225 Difference]: With dead ends: 23 [2020-10-13 10:14:45,220 INFO L226 Difference]: Without dead ends: 18 [2020-10-13 10:14:45,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:14:45,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-13 10:14:45,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-13 10:14:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-13 10:14:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-13 10:14:45,226 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-10-13 10:14:45,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:45,226 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-13 10:14:45,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:14:45,227 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-13 10:14:45,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 10:14:45,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:45,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:45,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:14:45,228 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:45,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:45,229 INFO L82 PathProgramCache]: Analyzing trace with hash -130515723, now seen corresponding path program 3 times [2020-10-13 10:14:45,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:45,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530935037] [2020-10-13 10:14:45,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:45,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:45,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 10:14:45,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 10:14:45,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:14:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:14:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:14:45,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:45,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:45,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:45,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:14:45,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:45,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:14:45,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:45,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:45,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:14:45,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530935037] [2020-10-13 10:14:45,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:14:45,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:14:45,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086321025] [2020-10-13 10:14:45,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:14:45,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:45,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:14:45,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:14:45,431 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2020-10-13 10:14:45,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:45,471 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-10-13 10:14:45,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:14:45,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-13 10:14:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:45,473 INFO L225 Difference]: With dead ends: 25 [2020-10-13 10:14:45,473 INFO L226 Difference]: Without dead ends: 20 [2020-10-13 10:14:45,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:14:45,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-13 10:14:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-13 10:14:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-13 10:14:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-13 10:14:45,480 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-10-13 10:14:45,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:45,481 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-13 10:14:45,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:14:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-13 10:14:45,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 10:14:45,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:45,482 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:45,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:14:45,483 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:45,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:45,484 INFO L82 PathProgramCache]: Analyzing trace with hash 263802547, now seen corresponding path program 4 times [2020-10-13 10:14:45,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:45,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548667147] [2020-10-13 10:14:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:45,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:45,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:45,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 10:14:45,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:45,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 10:14:45,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:45,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:14:45,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:14:45,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:14:45,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:45,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:45,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:45,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:45,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:14:45,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:45,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:14:45,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:45,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:45,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:14:45,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548667147] [2020-10-13 10:14:45,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:14:45,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:14:45,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105303835] [2020-10-13 10:14:45,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:14:45,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:45,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:14:45,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:14:45,685 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-10-13 10:14:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:45,726 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-10-13 10:14:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:14:45,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-13 10:14:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:45,728 INFO L225 Difference]: With dead ends: 27 [2020-10-13 10:14:45,728 INFO L226 Difference]: Without dead ends: 22 [2020-10-13 10:14:45,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:14:45,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-13 10:14:45,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-13 10:14:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-13 10:14:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-13 10:14:45,735 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-10-13 10:14:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:45,735 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-13 10:14:45,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:14:45,736 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-13 10:14:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 10:14:45,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:45,737 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:45,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:14:45,737 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:45,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:45,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1246537969, now seen corresponding path program 5 times [2020-10-13 10:14:45,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:45,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32695648] [2020-10-13 10:14:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:45,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:45,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 10:14:45,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:45,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 10:14:45,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:14:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:14:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:14:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:45,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:45,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:45,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:14:45,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:45,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:14:45,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:45,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:45,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:14:45,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32695648] [2020-10-13 10:14:45,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:14:45,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:14:45,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350875547] [2020-10-13 10:14:45,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:14:45,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:45,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:14:45,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:14:45,918 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2020-10-13 10:14:45,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:45,957 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-13 10:14:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:14:45,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-13 10:14:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:45,958 INFO L225 Difference]: With dead ends: 29 [2020-10-13 10:14:45,959 INFO L226 Difference]: Without dead ends: 24 [2020-10-13 10:14:45,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:14:45,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-13 10:14:45,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-13 10:14:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-13 10:14:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-10-13 10:14:45,965 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-10-13 10:14:45,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:45,965 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-10-13 10:14:45,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:14:45,966 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-10-13 10:14:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 10:14:45,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:45,967 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:45,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:14:45,967 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:45,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:45,968 INFO L82 PathProgramCache]: Analyzing trace with hash 762473391, now seen corresponding path program 6 times [2020-10-13 10:14:45,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:45,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121479662] [2020-10-13 10:14:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:45,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:46,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:46,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 10:14:46,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 10:14:46,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:14:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:14:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:14:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:46,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:46,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:46,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:46,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:14:46,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:46,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:14:46,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:46,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:14:46,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121479662] [2020-10-13 10:14:46,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:14:46,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:14:46,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034847882] [2020-10-13 10:14:46,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:14:46,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:46,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:14:46,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:14:46,193 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-10-13 10:14:46,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:46,254 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-10-13 10:14:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:14:46,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-13 10:14:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:46,259 INFO L225 Difference]: With dead ends: 31 [2020-10-13 10:14:46,260 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 10:14:46,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:14:46,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 10:14:46,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-13 10:14:46,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-13 10:14:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-13 10:14:46,273 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-10-13 10:14:46,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:46,273 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-13 10:14:46,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:14:46,279 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-13 10:14:46,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:14:46,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:46,280 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:46,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:14:46,281 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:46,282 INFO L82 PathProgramCache]: Analyzing trace with hash -567118099, now seen corresponding path program 7 times [2020-10-13 10:14:46,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:46,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147474046] [2020-10-13 10:14:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:46,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:46,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:46,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 10:14:46,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:46,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 10:14:46,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:14:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:14:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:14:46,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:14:46,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:46,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:46,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:46,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:14:46,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:46,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:14:46,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:46,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:14:46,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147474046] [2020-10-13 10:14:46,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:14:46,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:14:46,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050358438] [2020-10-13 10:14:46,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:14:46,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:46,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:14:46,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:14:46,573 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 10 states. [2020-10-13 10:14:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:46,645 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-10-13 10:14:46,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:14:46,648 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-13 10:14:46,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:46,649 INFO L225 Difference]: With dead ends: 33 [2020-10-13 10:14:46,650 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 10:14:46,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:14:46,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 10:14:46,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 10:14:46,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 10:14:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-13 10:14:46,666 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-10-13 10:14:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:46,667 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-13 10:14:46,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:14:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-13 10:14:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 10:14:46,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:46,670 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:46,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:14:46,671 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:46,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:46,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1595714219, now seen corresponding path program 8 times [2020-10-13 10:14:46,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:46,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296880599] [2020-10-13 10:14:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:46,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:46,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:46,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:14:46,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:46,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 10:14:46,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:14:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:14:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:14:46,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:46,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:46,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:46,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:46,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:14:46,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:46,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:14:46,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:46,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:14:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:14:46,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296880599] [2020-10-13 10:14:46,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:14:46,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:14:46,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915974952] [2020-10-13 10:14:46,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:14:46,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:46,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:14:46,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:14:46,921 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 11 states. [2020-10-13 10:14:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:46,990 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-10-13 10:14:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:14:46,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-13 10:14:46,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:46,993 INFO L225 Difference]: With dead ends: 35 [2020-10-13 10:14:46,993 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 10:14:46,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:14:46,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 10:14:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 10:14:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 10:14:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-10-13 10:14:47,001 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2020-10-13 10:14:47,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:47,001 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-10-13 10:14:47,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:14:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-10-13 10:14:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 10:14:47,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:47,003 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:47,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:14:47,003 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:47,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:47,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1313400553, now seen corresponding path program 9 times [2020-10-13 10:14:47,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:47,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669141781] [2020-10-13 10:14:47,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:47,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:47,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:47,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:14:47,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:47,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 10:14:47,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:47,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:14:47,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:14:47,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 10:14:47,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:47,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:14:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:14:47,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:14:47,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:14:47,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:14:47,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:14:47,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:14:47,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:14:47,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:14:47,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:14:47,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:14:47,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:14:47,260 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:14:47,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669141781] [2020-10-13 10:14:47,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:14:47,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:14:47,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573720756] [2020-10-13 10:14:47,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:14:47,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:14:47,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:14:47,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:14:47,263 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 12 states. [2020-10-13 10:14:47,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:14:47,315 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-10-13 10:14:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:14:47,315 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-10-13 10:14:47,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:14:47,316 INFO L225 Difference]: With dead ends: 36 [2020-10-13 10:14:47,317 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 10:14:47,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:14:47,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 10:14:47,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-13 10:14:47,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 10:14:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-10-13 10:14:47,323 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2020-10-13 10:14:47,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:14:47,324 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-10-13 10:14:47,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:14:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-10-13 10:14:47,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:14:47,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:14:47,325 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:14:47,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:14:47,325 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:14:47,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:14:47,326 INFO L82 PathProgramCache]: Analyzing trace with hash 592907175, now seen corresponding path program 10 times [2020-10-13 10:14:47,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:14:47,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32548886] [2020-10-13 10:14:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:14:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:14:47,336 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:14:47,336 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:14:47,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:14:47,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:14:47 BoogieIcfgContainer [2020-10-13 10:14:47,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:14:47,364 INFO L168 Benchmark]: Toolchain (without parser) took 3888.60 ms. Allocated memory was 146.8 MB in the beginning and 244.8 MB in the end (delta: 98.0 MB). Free memory was 103.0 MB in the beginning and 179.7 MB in the end (delta: -76.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:47,365 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:14:47,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.65 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 93.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:47,367 INFO L168 Benchmark]: Boogie Preprocessor took 132.28 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 93.0 MB in the beginning and 181.8 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:47,368 INFO L168 Benchmark]: RCFGBuilder took 288.05 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 170.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:47,369 INFO L168 Benchmark]: TraceAbstraction took 3113.84 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 169.3 MB in the beginning and 179.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:14:47,372 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 347.65 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 93.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.28 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 93.0 MB in the beginning and 181.8 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.05 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 170.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3113.84 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 169.3 MB in the beginning and 179.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L8] float tick = 1.f / 10.f; [L9] float time = 0.f; [L10] int i; [L12] i = 0 [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND TRUE i < 10 [L13] time += tick [L12] i++ [L12] COND FALSE !(i < 10) [L15] CALL __VERIFIER_assert(time != 1.0) [L4] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.0s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 119 SDtfs, 55 SDslu, 360 SDs, 0 SdLazy, 174 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=11, 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, 11 MinimizatonAttempts, 9 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 189 ConstructedInterpolants, 0 QuantifiedInterpolants, 7911 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 0/285 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...