/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=BIGGEST --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/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:13:15,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:13:15,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:13:15,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:13:15,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:13:15,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:13:15,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:13:15,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:13:15,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:13:15,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:13:15,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:13:15,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:13:15,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:13:15,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:13:15,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:13:15,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:13:15,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:13:15,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:13:15,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:13:15,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:13:15,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:13:15,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:13:15,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:13:15,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:13:15,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:13:15,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:13:15,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:13:15,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:13:15,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:13:15,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:13:15,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:13:15,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:13:15,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:13:15,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:13:15,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:13:15,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:13:15,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:13:15,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:13:15,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:13:15,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:13:15,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:13:15,993 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 [2020-10-12 18:13:16,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:13:16,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:13:16,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:13:16,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:13:16,038 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:13:16,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:13:16,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:13:16,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:13:16,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:13:16,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:13:16,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:13:16,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:13:16,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:13:16,042 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:13:16,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:13:16,043 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:13:16,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:13:16,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:13:16,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:13:16,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:13:16,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:13:16,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:13:16,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:13:16,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:13:16,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:13:16,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:13:16,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:13:16,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:13:16,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:13:16,046 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 18:13:16,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:13:16,404 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:13:16,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:13:16,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:13:16,410 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:13:16,410 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-10-12 18:13:16,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b47ee3800/d228e9b46b1140c6845f9f63de11a8ce/FLAG29d4cbb73 [2020-10-12 18:13:16,906 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:13:16,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition01-2.c [2020-10-12 18:13:16,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b47ee3800/d228e9b46b1140c6845f9f63de11a8ce/FLAG29d4cbb73 [2020-10-12 18:13:17,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b47ee3800/d228e9b46b1140c6845f9f63de11a8ce [2020-10-12 18:13:17,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:13:17,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:13:17,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:13:17,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:13:17,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:13:17,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:13:17" (1/1) ... [2020-10-12 18:13:17,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a529ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:13:17, skipping insertion in model container [2020-10-12 18:13:17,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:13:17" (1/1) ... [2020-10-12 18:13:17,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:13:17,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:13:17,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:13:17,476 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:13:17,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:13:17,506 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:13:17,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:13:17 WrapperNode [2020-10-12 18:13:17,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:13:17,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:13:17,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:13:17,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:13:17,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:13:17" (1/1) ... [2020-10-12 18:13:17,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:13:17" (1/1) ... [2020-10-12 18:13:17,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:13:17" (1/1) ... [2020-10-12 18:13:17,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:13:17" (1/1) ... [2020-10-12 18:13:17,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:13:17" (1/1) ... [2020-10-12 18:13:17,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:13:17" (1/1) ... [2020-10-12 18:13:17,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:13:17" (1/1) ... [2020-10-12 18:13:17,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:13:17,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:13:17,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:13:17,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:13:17,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:13:17" (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 [2020-10-12 18:13:17,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:13:17,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:13:17,681 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-10-12 18:13:17,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:13:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:13:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:13:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-10-12 18:13:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:13:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:13:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:13:17,880 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:13:17,880 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 18:13:17,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:13:17 BoogieIcfgContainer [2020-10-12 18:13:17,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:13:17,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:13:17,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:13:17,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:13:17,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:13:17" (1/3) ... [2020-10-12 18:13:17,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff5aba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:13:17, skipping insertion in model container [2020-10-12 18:13:17,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:13:17" (2/3) ... [2020-10-12 18:13:17,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff5aba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:13:17, skipping insertion in model container [2020-10-12 18:13:17,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:13:17" (3/3) ... [2020-10-12 18:13:17,894 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-10-12 18:13:17,906 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:13:17,915 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:13:17,935 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:13:17,972 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:13:17,972 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:13:17,972 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:13:17,972 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:13:17,972 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:13:17,973 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:13:17,973 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:13:17,973 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:13:18,000 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-12 18:13:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 18:13:18,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:13:18,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:13:18,012 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:13:18,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:13:18,021 INFO L82 PathProgramCache]: Analyzing trace with hash -854965079, now seen corresponding path program 1 times [2020-10-12 18:13:18,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:13:18,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51159585] [2020-10-12 18:13:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:13:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:18,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:18,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 18:13:18,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-12 18:13:18,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:13:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:13:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:13:18,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:13:18,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:13:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:18,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:18,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:18,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:13:18,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:18,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:13:18,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:18,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:13:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:13:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:13:18,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:13:18,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:13:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:18,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:18,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:18,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:13:18,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:18,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 18:13:18,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:13:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:13:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:13:18,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:13:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:13:18,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51159585] [2020-10-12 18:13:18,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:13:18,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 18:13:18,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785901178] [2020-10-12 18:13:18,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:13:18,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:13:18,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:13:18,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:13:18,624 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-10-12 18:13:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:13:18,790 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-10-12 18:13:18,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:13:18,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-12 18:13:18,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:13:18,803 INFO L225 Difference]: With dead ends: 38 [2020-10-12 18:13:18,803 INFO L226 Difference]: Without dead ends: 24 [2020-10-12 18:13:18,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:13:18,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-12 18:13:18,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-12 18:13:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 18:13:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-10-12 18:13:18,851 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-10-12 18:13:18,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:13:18,852 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-10-12 18:13:18,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:13:18,853 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-10-12 18:13:18,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-12 18:13:18,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:13:18,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:13:18,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:13:18,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:13:18,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:13:18,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1632999070, now seen corresponding path program 1 times [2020-10-12 18:13:18,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:13:18,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778705773] [2020-10-12 18:13:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:13:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:19,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:19,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:13:19,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:13:19,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-12 18:13:19,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:13:19,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 18:13:19,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:13:19,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 18:13:19,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:13:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:19,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:19,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:13:19,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:13:19,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:13:19,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:13:19,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:13:19,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:13:19,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:13:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:19,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:19,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:19,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:19,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:13:19,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:13:19,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 18:13:19,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:13:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:13:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:13:19,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:13:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:13:19,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778705773] [2020-10-12 18:13:19,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:13:19,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 18:13:19,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712173276] [2020-10-12 18:13:19,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:13:19,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:13:19,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:13:19,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:13:19,256 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2020-10-12 18:13:19,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:13:19,385 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2020-10-12 18:13:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:13:19,386 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-12 18:13:19,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:13:19,387 INFO L225 Difference]: With dead ends: 31 [2020-10-12 18:13:19,387 INFO L226 Difference]: Without dead ends: 21 [2020-10-12 18:13:19,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:13:19,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-12 18:13:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-12 18:13:19,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-12 18:13:19,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-12 18:13:19,396 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2020-10-12 18:13:19,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:13:19,396 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-12 18:13:19,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:13:19,396 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-12 18:13:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 18:13:19,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:13:19,398 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:13:19,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:13:19,398 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:13:19,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:13:19,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1746800232, now seen corresponding path program 1 times [2020-10-12 18:13:19,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:13:19,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027094598] [2020-10-12 18:13:19,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:13:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:19,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:19,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:19,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 18:13:19,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 18:13:19,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:13:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:13:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:13:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:19,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:13:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:19,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:19,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:19,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:13:19,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:19,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:13:19,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:13:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:13:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:13:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:19,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:13:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:19,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:19,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:19,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:13:19,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:19,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 18:13:19,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:13:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:13:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:13:19,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:19,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:13:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:19,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:19,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:19,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:13:19,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:19,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 18:13:19,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:13:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:13:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:13:19,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 18:13:19,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027094598] [2020-10-12 18:13:19,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:13:19,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:13:19,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002037697] [2020-10-12 18:13:19,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:13:19,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:13:19,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:13:19,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:13:19,830 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 8 states. [2020-10-12 18:13:19,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:13:19,940 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-10-12 18:13:19,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:13:19,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-12 18:13:19,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:13:19,941 INFO L225 Difference]: With dead ends: 21 [2020-10-12 18:13:19,942 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 18:13:19,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:13:19,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 18:13:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 18:13:19,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 18:13:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 18:13:19,944 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-12 18:13:19,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:13:19,944 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 18:13:19,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:13:19,944 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 18:13:19,944 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 18:13:19,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:13:19,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 18:13:20,009 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 18:13:20,010 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 18:13:20,010 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 18:13:20,010 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 18:13:20,010 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 18:13:20,011 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 18:13:20,011 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-10-12 18:13:20,011 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 45) the Hoare annotation is: true [2020-10-12 18:13:20,011 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-10-12 18:13:20,011 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 45) no Hoare annotation was computed. [2020-10-12 18:13:20,011 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 45) no Hoare annotation was computed. [2020-10-12 18:13:20,012 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-10-12 18:13:20,012 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-10-12 18:13:20,012 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (<= 0 main_~n~0) [2020-10-12 18:13:20,012 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-10-12 18:13:20,012 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-10-12 18:13:20,012 INFO L268 CegarLoopResult]: For program point additionFINAL(lines 13 23) no Hoare annotation was computed. [2020-10-12 18:13:20,013 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (<= (+ |addition_#in~n| 1) 0) (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m)) [2020-10-12 18:13:20,013 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-10-12 18:13:20,013 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-10-12 18:13:20,013 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (not (= addition_~n 0))) [2020-10-12 18:13:20,013 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-10-12 18:13:20,013 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-10-12 18:13:20,014 INFO L271 CegarLoopResult]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2020-10-12 18:13:20,014 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-10-12 18:13:20,014 INFO L268 CegarLoopResult]: For program point additionEXIT(lines 13 23) no Hoare annotation was computed. [2020-10-12 18:13:20,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 06:13:20 BoogieIcfgContainer [2020-10-12 18:13:20,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 18:13:20,027 INFO L168 Benchmark]: Toolchain (without parser) took 2754.77 ms. Allocated memory was 138.4 MB in the beginning and 232.3 MB in the end (delta: 93.8 MB). Free memory was 101.7 MB in the beginning and 128.3 MB in the end (delta: -26.7 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2020-10-12 18:13:20,028 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 18:13:20,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.15 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 92.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-10-12 18:13:20,030 INFO L168 Benchmark]: Boogie Preprocessor took 106.85 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 179.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-10-12 18:13:20,031 INFO L168 Benchmark]: RCFGBuilder took 270.60 ms. Allocated memory is still 200.8 MB. Free memory was 179.2 MB in the beginning and 166.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-10-12 18:13:20,035 INFO L168 Benchmark]: TraceAbstraction took 2137.65 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 166.2 MB in the beginning and 128.3 MB in the end (delta: 37.8 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. [2020-10-12 18:13:20,039 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 234.15 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 92.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.85 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 179.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 270.60 ms. Allocated memory is still 200.8 MB. Free memory was 179.2 MB in the beginning and 166.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2137.65 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 166.2 MB in the beginning and 128.3 MB in the end (delta: 37.8 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 38 SDslu, 133 SDs, 0 SdLazy, 166 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 31 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 3455 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...