/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Addition02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 12:54:23,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 12:54:23,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 12:54:23,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 12:54:23,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 12:54:23,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 12:54:23,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 12:54:23,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 12:54:24,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 12:54:24,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 12:54:24,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 12:54:24,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 12:54:24,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 12:54:24,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 12:54:24,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 12:54:24,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 12:54:24,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 12:54:24,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 12:54:24,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 12:54:24,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 12:54:24,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 12:54:24,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 12:54:24,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 12:54:24,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 12:54:24,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 12:54:24,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 12:54:24,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 12:54:24,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 12:54:24,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 12:54:24,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 12:54:24,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 12:54:24,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 12:54:24,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 12:54:24,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 12:54:24,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 12:54:24,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 12:54:24,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 12:54:24,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 12:54:24,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 12:54:24,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 12:54:24,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 12:54:24,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 12:54:24,053 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 12:54:24,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 12:54:24,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 12:54:24,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 12:54:24,055 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 12:54:24,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 12:54:24,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 12:54:24,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 12:54:24,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 12:54:24,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 12:54:24,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 12:54:24,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 12:54:24,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 12:54:24,057 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 12:54:24,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 12:54:24,057 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 12:54:24,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 12:54:24,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 12:54:24,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 12:54:24,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 12:54:24,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 12:54:24,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 12:54:24,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 12:54:24,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 12:54:24,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 12:54:24,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 12:54:24,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 12:54:24,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 12:54:24,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 12:54:24,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 12:54:24,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 12:54:24,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 12:54:24,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 12:54:24,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 12:54:24,381 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 12:54:24,382 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition02.c [2020-10-13 12:54:24,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b53cf4fe4/c368f915813c4da2b0a931a88e64fe1c/FLAG95bcf21df [2020-10-13 12:54:24,893 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 12:54:24,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition02.c [2020-10-13 12:54:24,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b53cf4fe4/c368f915813c4da2b0a931a88e64fe1c/FLAG95bcf21df [2020-10-13 12:54:25,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b53cf4fe4/c368f915813c4da2b0a931a88e64fe1c [2020-10-13 12:54:25,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 12:54:25,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 12:54:25,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 12:54:25,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 12:54:25,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 12:54:25,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:54:25" (1/1) ... [2020-10-13 12:54:25,323 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 13.10 12:54:25, skipping insertion in model container [2020-10-13 12:54:25,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:54:25" (1/1) ... [2020-10-13 12:54:25,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 12:54:25,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 12:54:25,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 12:54:25,600 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 12:54:25,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 12:54:25,633 INFO L208 MainTranslator]: Completed translation [2020-10-13 12:54:25,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:54:25 WrapperNode [2020-10-13 12:54:25,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 12:54:25,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 12:54:25,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 12:54:25,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 12:54:25,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:54:25" (1/1) ... [2020-10-13 12:54:25,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:54:25" (1/1) ... [2020-10-13 12:54:25,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:54:25" (1/1) ... [2020-10-13 12:54:25,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:54:25" (1/1) ... [2020-10-13 12:54:25,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:54:25" (1/1) ... [2020-10-13 12:54:25,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:54:25" (1/1) ... [2020-10-13 12:54:25,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:54:25" (1/1) ... [2020-10-13 12:54:25,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 12:54:25,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 12:54:25,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 12:54:25,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 12:54:25,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:54:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 12:54:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 12:54:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 12:54:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-10-13 12:54:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 12:54:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 12:54:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 12:54:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-10-13 12:54:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 12:54:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 12:54:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 12:54:25,997 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 12:54:25,998 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 12:54:26,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:54:26 BoogieIcfgContainer [2020-10-13 12:54:26,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 12:54:26,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 12:54:26,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 12:54:26,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 12:54:26,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:54:25" (1/3) ... [2020-10-13 12:54:26,007 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 13.10 12:54:26, skipping insertion in model container [2020-10-13 12:54:26,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:54:25" (2/3) ... [2020-10-13 12:54:26,008 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 13.10 12:54:26, skipping insertion in model container [2020-10-13 12:54:26,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:54:26" (3/3) ... [2020-10-13 12:54:26,010 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition02.c [2020-10-13 12:54:26,021 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 12:54:26,029 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 12:54:26,043 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 12:54:26,067 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 12:54:26,068 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 12:54:26,068 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 12:54:26,068 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 12:54:26,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 12:54:26,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 12:54:26,068 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 12:54:26,068 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 12:54:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-13 12:54:26,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 12:54:26,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:54:26,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 12:54:26,094 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:54:26,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:54:26,099 INFO L82 PathProgramCache]: Analyzing trace with hash -854965079, now seen corresponding path program 1 times [2020-10-13 12:54:26,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:54:26,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396337209] [2020-10-13 12:54:26,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:54:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:54:26,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:54:26,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:54:26,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 12:54:26,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:54:26,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-13 12:54:26,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:54:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 12:54:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 12:54:26,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 12:54:26,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 12:54:26,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:54:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:54:26,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:54:26,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:54:26,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:54:26,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:54:26,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 12:54:26,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:54:26,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:54:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:54:26,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:54:26,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 12:54:26,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 12:54:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:54:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:54:26,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:54:26,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 12:54:26,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:54:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 12:54:26,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:54:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 12:54:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:54:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 12:54:26,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:54:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 12:54:26,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396337209] [2020-10-13 12:54:26,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 12:54:26,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 12:54:26,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48933072] [2020-10-13 12:54:26,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 12:54:26,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:54:26,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 12:54:26,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 12:54:26,751 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-10-13 12:54:26,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:54:26,930 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-10-13 12:54:26,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 12:54:26,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-13 12:54:26,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:54:26,944 INFO L225 Difference]: With dead ends: 38 [2020-10-13 12:54:26,944 INFO L226 Difference]: Without dead ends: 24 [2020-10-13 12:54:26,948 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 [2020-10-13 12:54:26,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-13 12:54:26,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-13 12:54:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-13 12:54:26,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-10-13 12:54:26,997 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-10-13 12:54:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:54:26,997 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-10-13 12:54:26,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 12:54:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-10-13 12:54:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 12:54:27,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:54:27,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 12:54:27,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 12:54:27,001 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:54:27,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:54:27,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1632999070, now seen corresponding path program 1 times [2020-10-13 12:54:27,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:54:27,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119299352] [2020-10-13 12:54:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:54:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:54:27,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:54:27,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:54:27,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:54:27,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 12:54:27,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 12:54:27,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-13 12:54:27,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:54:27,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 12:54:27,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 12:54:27,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 12:54:27,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:54:27,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:54:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:54:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:54:27,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:54:27,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:54:27,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:54:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:54:27,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:54:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:54:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:54:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:54:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:54:27,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 12:54:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:54:27,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:54:27,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:54:27,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 12:54:27,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:54:27,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 12:54:27,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:54:27,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 12:54:27,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 12:54:27,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 12:54:27,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:54:27,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 12:54:27,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119299352] [2020-10-13 12:54:27,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 12:54:27,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 12:54:27,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259921236] [2020-10-13 12:54:27,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 12:54:27,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:54:27,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 12:54:27,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-13 12:54:27,304 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 4 states. [2020-10-13 12:54:27,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:54:27,336 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2020-10-13 12:54:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 12:54:27,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-13 12:54:27,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:54:27,338 INFO L225 Difference]: With dead ends: 34 [2020-10-13 12:54:27,338 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 12:54:27,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-13 12:54:27,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 12:54:27,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-13 12:54:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-13 12:54:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-13 12:54:27,349 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2020-10-13 12:54:27,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:54:27,350 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-13 12:54:27,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 12:54:27,350 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-13 12:54:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 12:54:27,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:54:27,352 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] [2020-10-13 12:54:27,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 12:54:27,352 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:54:27,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:54:27,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1746800232, now seen corresponding path program 1 times [2020-10-13 12:54:27,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:54:27,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81493607] [2020-10-13 12:54:27,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:54:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 12:54:27,377 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 12:54:27,377 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 12:54:27,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 12:54:27,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:54:27 BoogieIcfgContainer [2020-10-13 12:54:27,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 12:54:27,403 INFO L168 Benchmark]: Toolchain (without parser) took 2087.83 ms. Allocated memory was 146.8 MB in the beginning and 235.4 MB in the end (delta: 88.6 MB). Free memory was 102.8 MB in the beginning and 204.4 MB in the end (delta: -101.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 12:54:27,404 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 12:54:27,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.42 ms. Allocated memory is still 146.8 MB. Free memory was 102.6 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-13 12:54:27,406 INFO L168 Benchmark]: Boogie Preprocessor took 112.53 ms. Allocated memory was 146.8 MB in the beginning and 201.9 MB in the end (delta: 55.1 MB). Free memory was 93.0 MB in the beginning and 179.8 MB in the end (delta: -86.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-13 12:54:27,407 INFO L168 Benchmark]: RCFGBuilder took 254.17 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 167.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-10-13 12:54:27,408 INFO L168 Benchmark]: TraceAbstraction took 1397.66 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 166.4 MB in the beginning and 204.4 MB in the end (delta: -38.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 12:54:27,412 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.42 ms. Allocated memory is still 146.8 MB. Free memory was 102.6 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.53 ms. Allocated memory was 146.8 MB in the beginning and 201.9 MB in the end (delta: 55.1 MB). Free memory was 93.0 MB in the beginning and 179.8 MB in the end (delta: -86.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 254.17 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 167.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1397.66 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 166.4 MB in the beginning and 204.4 MB in the end (delta: -38.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 43]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L27] int m = __VERIFIER_nondet_int(); [L28] COND FALSE !(m < 0 || m > 1073741823) [L33] int n = __VERIFIER_nondet_int(); [L34] COND FALSE !(n < 0 || n > 1073741823) [L39] CALL, EXPR addition(m,n) [L14] COND FALSE !(n == 0) [L17] COND TRUE n > 0 [L18] CALL, EXPR addition(m+1, n-1) [L14] COND TRUE n == 0 [L15] return m; [L18] RET, EXPR addition(m+1, n-1) [L18] return addition(m+1, n-1); [L39] RET, EXPR addition(m,n) [L39] int result = addition(m,n); [L40] COND FALSE !(result == m - n) [L43] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 21 SDslu, 80 SDs, 0 SdLazy, 80 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...