/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 [2020-10-15 01:58:59,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 01:58:59,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 01:58:59,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 01:58:59,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 01:58:59,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 01:58:59,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 01:58:59,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 01:58:59,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 01:58:59,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 01:58:59,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 01:58:59,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 01:58:59,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 01:58:59,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 01:58:59,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 01:58:59,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 01:58:59,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 01:58:59,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 01:58:59,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 01:58:59,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 01:58:59,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 01:58:59,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 01:58:59,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 01:58:59,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 01:58:59,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 01:58:59,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 01:58:59,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 01:58:59,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 01:58:59,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 01:58:59,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 01:58:59,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 01:58:59,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 01:58:59,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 01:58:59,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 01:58:59,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 01:58:59,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 01:58:59,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 01:58:59,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 01:58:59,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 01:58:59,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 01:58:59,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 01:58:59,963 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 [2020-10-15 01:58:59,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 01:58:59,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 01:58:59,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 01:58:59,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 01:58:59,988 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 01:58:59,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 01:58:59,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 01:58:59,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 01:58:59,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 01:58:59,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 01:58:59,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 01:58:59,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 01:58:59,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 01:58:59,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 01:58:59,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 01:58:59,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 01:58:59,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 01:58:59,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 01:58:59,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 01:58:59,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 01:58:59,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 01:58:59,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 01:58:59,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 01:58:59,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 01:58:59,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 01:58:59,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 01:58:59,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 01:58:59,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 01:58:59,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 01:58:59,995 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 01:59:00,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 01:59:00,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 01:59:00,291 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 01:59:00,293 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 01:59:00,293 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 01:59:00,294 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-10-15 01:59:00,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f289998d9/024cda16501844f9a548238c91fa941c/FLAG28406c0b7 [2020-10-15 01:59:00,753 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 01:59:00,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition01-2.c [2020-10-15 01:59:00,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f289998d9/024cda16501844f9a548238c91fa941c/FLAG28406c0b7 [2020-10-15 01:59:01,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f289998d9/024cda16501844f9a548238c91fa941c [2020-10-15 01:59:01,187 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 01:59:01,189 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 01:59:01,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 01:59:01,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 01:59:01,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 01:59:01,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:01" (1/1) ... [2020-10-15 01:59:01,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66948a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:01, skipping insertion in model container [2020-10-15 01:59:01,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:01" (1/1) ... [2020-10-15 01:59:01,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 01:59:01,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 01:59:01,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 01:59:01,462 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 01:59:01,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 01:59:01,497 INFO L208 MainTranslator]: Completed translation [2020-10-15 01:59:01,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:01 WrapperNode [2020-10-15 01:59:01,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 01:59:01,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 01:59:01,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 01:59:01,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 01:59:01,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:01" (1/1) ... [2020-10-15 01:59:01,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:01" (1/1) ... [2020-10-15 01:59:01,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:01" (1/1) ... [2020-10-15 01:59:01,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:01" (1/1) ... [2020-10-15 01:59:01,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:01" (1/1) ... [2020-10-15 01:59:01,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:01" (1/1) ... [2020-10-15 01:59:01,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:01" (1/1) ... [2020-10-15 01:59:01,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 01:59:01,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 01:59:01,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 01:59:01,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 01:59:01,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:01" (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 [2020-10-15 01:59:01,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 01:59:01,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 01:59:01,692 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-10-15 01:59:01,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 01:59:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 01:59:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 01:59:01,693 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-10-15 01:59:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 01:59:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 01:59:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 01:59:01,904 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 01:59:01,904 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 01:59:01,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:01 BoogieIcfgContainer [2020-10-15 01:59:01,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 01:59:01,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 01:59:01,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 01:59:01,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 01:59:01,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:59:01" (1/3) ... [2020-10-15 01:59:01,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a92460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:01, skipping insertion in model container [2020-10-15 01:59:01,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:01" (2/3) ... [2020-10-15 01:59:01,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a92460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:01, skipping insertion in model container [2020-10-15 01:59:01,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:01" (3/3) ... [2020-10-15 01:59:01,916 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-10-15 01:59:01,926 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 01:59:01,932 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 01:59:01,945 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 01:59:01,965 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 01:59:01,965 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 01:59:01,966 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 01:59:01,966 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 01:59:01,966 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 01:59:01,966 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 01:59:01,966 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 01:59:01,966 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 01:59:01,981 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-15 01:59:01,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 01:59:01,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:59:01,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:59:01,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:59:01,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:59:01,995 INFO L82 PathProgramCache]: Analyzing trace with hash -854965079, now seen corresponding path program 1 times [2020-10-15 01:59:02,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:59:02,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396337209] [2020-10-15 01:59:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:59:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:59:02,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:59:02,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:59:02,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-15 01:59:02,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:59:02,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-15 01:59:02,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:59:02,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:59:02,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 01:59:02,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 01:59:02,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 01:59:02,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 01:59:02,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:59:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:59:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:59:02,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:59:02,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:59:02,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:59:02,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:59:02,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:59:02,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:59:02,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:59:02,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:59:02,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:59:02,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:59:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 01:59:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:59:02,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:59:02,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:59:02,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 01:59:02,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:59:02,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 01:59:02,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:59:02,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:59:02,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 01:59:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:59:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 01:59:02,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 01:59:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:59:02,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396337209] [2020-10-15 01:59:02,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:59:02,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 01:59:02,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48933072] [2020-10-15 01:59:02,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 01:59:02,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:59:02,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 01:59:02,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 01:59:02,673 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-10-15 01:59:02,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:59:02,833 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-10-15 01:59:02,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 01:59:02,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 01:59:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:59:02,845 INFO L225 Difference]: With dead ends: 38 [2020-10-15 01:59:02,845 INFO L226 Difference]: Without dead ends: 24 [2020-10-15 01:59:02,848 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 [2020-10-15 01:59:02,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-15 01:59:02,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-15 01:59:02,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-15 01:59:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-10-15 01:59:02,893 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-10-15 01:59:02,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:59:02,893 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-10-15 01:59:02,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 01:59:02,894 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-10-15 01:59:02,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 01:59:02,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:59:02,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:59:02,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 01:59:02,896 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:59:02,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:59:02,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1632999070, now seen corresponding path program 1 times [2020-10-15 01:59:02,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:59:02,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119299352] [2020-10-15 01:59:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:59:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:59:02,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:59:02,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:59:03,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:59:03,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 01:59:03,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 01:59:03,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-15 01:59:03,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:59:03,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:59:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 01:59:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 01:59:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 01:59:03,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 01:59:03,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:59:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:59:03,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:59:03,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:59:03,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:59:03,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:59:03,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:59:03,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:59:03,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:59:03,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:59:03,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:59:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:59:03,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 01:59:03,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 01:59:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:59:03,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:59:03,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:59:03,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:59:03,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 01:59:03,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 01:59:03,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 01:59:03,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:59:03,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:59:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 01:59:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 01:59:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 01:59:03,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:59:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:59:03,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119299352] [2020-10-15 01:59:03,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:59:03,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 01:59:03,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425729282] [2020-10-15 01:59:03,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 01:59:03,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:59:03,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 01:59:03,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 01:59:03,247 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2020-10-15 01:59:03,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:59:03,333 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-10-15 01:59:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 01:59:03,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-15 01:59:03,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:59:03,335 INFO L225 Difference]: With dead ends: 35 [2020-10-15 01:59:03,335 INFO L226 Difference]: Without dead ends: 21 [2020-10-15 01:59:03,337 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 [2020-10-15 01:59:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-15 01:59:03,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-15 01:59:03,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-15 01:59:03,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-15 01:59:03,343 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2020-10-15 01:59:03,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:59:03,343 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-15 01:59:03,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 01:59:03,343 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-15 01:59:03,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 01:59:03,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:59:03,345 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] [2020-10-15 01:59:03,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 01:59:03,345 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:59:03,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:59:03,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1746800232, now seen corresponding path program 1 times [2020-10-15 01:59:03,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:59:03,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422436539] [2020-10-15 01:59:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:59:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:59:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:59:03,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:59:03,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 01:59:03,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:59:03,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-15 01:59:03,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:59:03,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:59:03,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 01:59:03,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 01:59:03,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 01:59:03,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:59:03,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:59:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:59:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:59:03,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:59:03,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:59:03,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:59:03,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:59:03,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:59:03,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:59:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:59:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:59:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:59:03,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:59:03,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 01:59:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:59:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:59:03,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:59:03,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 01:59:03,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:59:03,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 01:59:03,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:59:03,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:59:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 01:59:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:59:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 01:59:03,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:59:03,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 01:59:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:59:03,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:59:03,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:59:03,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 01:59:03,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:59:03,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 01:59:03,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:59:03,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:59:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 01:59:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:59:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 01:59:03,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:59:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 01:59:03,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422436539] [2020-10-15 01:59:03,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 01:59:03,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 01:59:03,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130476847] [2020-10-15 01:59:03,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 01:59:03,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:59:03,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 01:59:03,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 01:59:03,641 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 8 states. [2020-10-15 01:59:03,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:59:03,744 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-10-15 01:59:03,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 01:59:03,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-15 01:59:03,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:59:03,745 INFO L225 Difference]: With dead ends: 21 [2020-10-15 01:59:03,745 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 01:59:03,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-15 01:59:03,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 01:59:03,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 01:59:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 01:59:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 01:59:03,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-15 01:59:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:59:03,747 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 01:59:03,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 01:59:03,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 01:59:03,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 01:59:03,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 01:59:03,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-15 01:59:03,795 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-15 01:59:03,795 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-15 01:59:03,795 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-15 01:59:03,795 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-15 01:59:03,796 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-15 01:59:03,796 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-15 01:59:03,796 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-10-15 01:59:03,796 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 45) the Hoare annotation is: true [2020-10-15 01:59:03,796 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-10-15 01:59:03,796 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 45) no Hoare annotation was computed. [2020-10-15 01:59:03,797 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 45) no Hoare annotation was computed. [2020-10-15 01:59:03,797 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-10-15 01:59:03,797 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-10-15 01:59:03,797 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (<= 0 main_~n~0) [2020-10-15 01:59:03,797 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-10-15 01:59:03,797 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-10-15 01:59:03,797 INFO L268 CegarLoopResult]: For program point additionFINAL(lines 13 23) no Hoare annotation was computed. [2020-10-15 01:59:03,798 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)) [2020-10-15 01:59:03,798 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-10-15 01:59:03,798 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-10-15 01:59:03,798 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))) [2020-10-15 01:59:03,798 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-10-15 01:59:03,798 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-10-15 01:59:03,799 INFO L271 CegarLoopResult]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2020-10-15 01:59:03,799 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-10-15 01:59:03,799 INFO L268 CegarLoopResult]: For program point additionEXIT(lines 13 23) no Hoare annotation was computed. [2020-10-15 01:59:03,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:59:03 BoogieIcfgContainer [2020-10-15 01:59:03,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 01:59:03,810 INFO L168 Benchmark]: Toolchain (without parser) took 2620.82 ms. Allocated memory was 146.3 MB in the beginning and 234.9 MB in the end (delta: 88.6 MB). Free memory was 102.5 MB in the beginning and 129.6 MB in the end (delta: -27.1 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2020-10-15 01:59:03,811 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-15 01:59:03,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.14 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-10-15 01:59:03,813 INFO L168 Benchmark]: Boogie Preprocessor took 125.66 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 92.6 MB in the beginning and 180.7 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-15 01:59:03,814 INFO L168 Benchmark]: RCFGBuilder took 282.94 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 167.2 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-10-15 01:59:03,815 INFO L168 Benchmark]: TraceAbstraction took 1898.21 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 167.2 MB in the beginning and 129.6 MB in the end (delta: 37.6 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB. [2020-10-15 01:59:03,819 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.14 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.66 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 92.6 MB in the beginning and 180.7 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 282.94 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 167.2 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1898.21 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 167.2 MB in the beginning and 129.6 MB in the end (delta: 37.6 MB). Peak memory consumption was 70.1 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: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 36 SDslu, 133 SDs, 0 SdLazy, 164 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 1 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, 0 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, 3305 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...