/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/recursive/Addition02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 03:56:18,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 03:56:18,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 03:56:18,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 03:56:18,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 03:56:18,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 03:56:18,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 03:56:18,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 03:56:18,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 03:56:18,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 03:56:18,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 03:56:18,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 03:56:18,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 03:56:18,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 03:56:18,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 03:56:18,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 03:56:18,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 03:56:18,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 03:56:18,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 03:56:18,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 03:56:18,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 03:56:18,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 03:56:18,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 03:56:18,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 03:56:18,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 03:56:18,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 03:56:18,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 03:56:18,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 03:56:18,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 03:56:18,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 03:56:18,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 03:56:18,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 03:56:18,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 03:56:18,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 03:56:18,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 03:56:18,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 03:56:18,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 03:56:18,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 03:56:18,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 03:56:18,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 03:56:18,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 03:56:18,852 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 [2020-10-27 03:56:18,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 03:56:18,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 03:56:18,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 03:56:18,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 03:56:18,902 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 03:56:18,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 03:56:18,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 03:56:18,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 03:56:18,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 03:56:18,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 03:56:18,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 03:56:18,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 03:56:18,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 03:56:18,904 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 03:56:18,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 03:56:18,905 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 03:56:18,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 03:56:18,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 03:56:18,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 03:56:18,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 03:56:18,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 03:56:18,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 03:56:18,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 03:56:18,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 03:56:18,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 03:56:18,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 03:56:18,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 03:56:18,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 03:56:18,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 03:56:18,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 03:56:19,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 03:56:19,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 03:56:19,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 03:56:19,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 03:56:19,353 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 03:56:19,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition02.c [2020-10-27 03:56:19,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b12ad53fe/341902adc161494aad17dca8c881bdce/FLAGeacfc1285 [2020-10-27 03:56:20,018 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 03:56:20,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition02.c [2020-10-27 03:56:20,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b12ad53fe/341902adc161494aad17dca8c881bdce/FLAGeacfc1285 [2020-10-27 03:56:20,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b12ad53fe/341902adc161494aad17dca8c881bdce [2020-10-27 03:56:20,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 03:56:20,388 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 03:56:20,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 03:56:20,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 03:56:20,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 03:56:20,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:56:20" (1/1) ... [2020-10-27 03:56:20,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316561f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:56:20, skipping insertion in model container [2020-10-27 03:56:20,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:56:20" (1/1) ... [2020-10-27 03:56:20,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 03:56:20,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 03:56:20,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 03:56:20,625 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 03:56:20,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 03:56:20,658 INFO L208 MainTranslator]: Completed translation [2020-10-27 03:56:20,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:56:20 WrapperNode [2020-10-27 03:56:20,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 03:56:20,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 03:56:20,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 03:56:20,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 03:56:20,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:56:20" (1/1) ... [2020-10-27 03:56:20,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:56:20" (1/1) ... [2020-10-27 03:56:20,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:56:20" (1/1) ... [2020-10-27 03:56:20,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:56:20" (1/1) ... [2020-10-27 03:56:20,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:56:20" (1/1) ... [2020-10-27 03:56:20,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:56:20" (1/1) ... [2020-10-27 03:56:20,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:56:20" (1/1) ... [2020-10-27 03:56:20,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 03:56:20,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 03:56:20,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 03:56:20,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 03:56:20,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:56:20" (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 [2020-10-27 03:56:20,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 03:56:20,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 03:56:20,766 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 03:56:20,766 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-10-27 03:56:20,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 03:56:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 03:56:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 03:56:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 03:56:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 03:56:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 03:56:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-10-27 03:56:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 03:56:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 03:56:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 03:56:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 03:56:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 03:56:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 03:56:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 03:56:21,134 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 03:56:21,135 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 03:56:21,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:56:21 BoogieIcfgContainer [2020-10-27 03:56:21,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 03:56:21,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 03:56:21,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 03:56:21,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 03:56:21,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:56:20" (1/3) ... [2020-10-27 03:56:21,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a24405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:56:21, skipping insertion in model container [2020-10-27 03:56:21,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:56:20" (2/3) ... [2020-10-27 03:56:21,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a24405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:56:21, skipping insertion in model container [2020-10-27 03:56:21,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:56:21" (3/3) ... [2020-10-27 03:56:21,149 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition02.c [2020-10-27 03:56:21,196 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 03:56:21,203 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 03:56:21,218 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 03:56:21,248 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 03:56:21,248 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 03:56:21,249 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 03:56:21,249 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 03:56:21,249 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 03:56:21,250 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 03:56:21,250 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 03:56:21,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 03:56:21,271 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-27 03:56:21,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 03:56:21,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:56:21,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:56:21,279 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:56:21,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:56:21,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2040802546, now seen corresponding path program 1 times [2020-10-27 03:56:21,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:56:21,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280899047] [2020-10-27 03:56:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:56:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:56:21,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:56:21,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:56:21,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 03:56:21,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:56:21,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-27 03:56:21,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:56:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:56:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:56:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:56:21,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 03:56:22,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:56:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:56:22,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:56:22,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:56:22,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:56:22,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:56:22,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 03:56:22,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:56:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:56:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:56:22,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:56:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:56:22,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:56:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:56:22,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:56:22,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:56:22,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:56:22,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:56:22,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 03:56:22,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:56:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:56:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:56:22,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:56:22,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:56:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 03:56:22,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280899047] [2020-10-27 03:56:22,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:56:22,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 03:56:22,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531936754] [2020-10-27 03:56:22,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 03:56:22,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:56:22,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 03:56:22,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 03:56:22,298 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2020-10-27 03:56:22,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:56:22,770 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-10-27 03:56:22,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 03:56:22,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-27 03:56:22,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:56:22,781 INFO L225 Difference]: With dead ends: 44 [2020-10-27 03:56:22,781 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 03:56:22,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 03:56:22,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 03:56:22,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 03:56:22,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 03:56:22,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-10-27 03:56:22,831 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17 [2020-10-27 03:56:22,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:56:22,831 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-10-27 03:56:22,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 03:56:22,832 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-10-27 03:56:22,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 03:56:22,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:56:22,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:56:22,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 03:56:22,834 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:56:22,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:56:22,835 INFO L82 PathProgramCache]: Analyzing trace with hash -165285543, now seen corresponding path program 1 times [2020-10-27 03:56:22,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:56:22,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685307384] [2020-10-27 03:56:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:56:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:56:22,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:56:22,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:56:23,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:56:23,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 03:56:23,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:56:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-27 03:56:23,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:56:23,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:56:23,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 03:56:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:56:23,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 03:56:23,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:56:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:56:23,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:56:23,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:56:23,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:56:23,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:56:23,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 03:56:23,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:56:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:56:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:56:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:56:23,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:56:23,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:56:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:56:23,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:56:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:56:23,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:56:23,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 03:56:23,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:56:23,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 03:56:23,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:56:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:56:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 03:56:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:56:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:56:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 03:56:23,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685307384] [2020-10-27 03:56:23,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:56:23,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 03:56:23,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946161888] [2020-10-27 03:56:23,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 03:56:23,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:56:23,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 03:56:23,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 03:56:23,293 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 7 states. [2020-10-27 03:56:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:56:23,572 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-10-27 03:56:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 03:56:23,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-27 03:56:23,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:56:23,574 INFO L225 Difference]: With dead ends: 34 [2020-10-27 03:56:23,574 INFO L226 Difference]: Without dead ends: 23 [2020-10-27 03:56:23,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-27 03:56:23,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-27 03:56:23,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-27 03:56:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 03:56:23,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-27 03:56:23,583 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2020-10-27 03:56:23,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:56:23,583 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-27 03:56:23,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 03:56:23,583 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-27 03:56:23,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 03:56:23,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:56:23,585 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, 1, 1] [2020-10-27 03:56:23,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 03:56:23,585 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:56:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:56:23,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1241281567, now seen corresponding path program 1 times [2020-10-27 03:56:23,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:56:23,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850221665] [2020-10-27 03:56:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:56:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 03:56:23,601 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 03:56:23,601 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 03:56:23,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 03:56:23,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:56:23 BoogieIcfgContainer [2020-10-27 03:56:23,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 03:56:23,631 INFO L168 Benchmark]: Toolchain (without parser) took 3240.78 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 101.5 MB in the beginning and 65.6 MB in the end (delta: 35.9 MB). Peak memory consumption was 77.7 MB. Max. memory is 8.0 GB. [2020-10-27 03:56:23,632 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 125.8 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 03:56:23,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.39 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 91.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 03:56:23,634 INFO L168 Benchmark]: Boogie Preprocessor took 31.66 ms. Allocated memory is still 125.8 MB. Free memory was 91.7 MB in the beginning and 90.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 03:56:23,635 INFO L168 Benchmark]: RCFGBuilder took 444.23 ms. Allocated memory is still 125.8 MB. Free memory was 90.3 MB in the beginning and 76.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 03:56:23,636 INFO L168 Benchmark]: TraceAbstraction took 2482.48 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 76.0 MB in the beginning and 65.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. [2020-10-27 03:56:23,640 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 125.8 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.39 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 91.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.66 ms. Allocated memory is still 125.8 MB. Free memory was 91.7 MB in the beginning and 90.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 444.23 ms. Allocated memory is still 125.8 MB. Free memory was 90.3 MB in the beginning and 76.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2482.48 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 76.0 MB in the beginning and 65.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L29] int m = __VERIFIER_nondet_int(); [L30] COND FALSE !(m < 0 || m > 1073741823) [L35] int n = __VERIFIER_nondet_int(); [L36] COND FALSE !(n < 0 || n > 1073741823) [L41] CALL, EXPR addition(m,n) [L16] COND FALSE !(n == 0) [L19] COND TRUE n > 0 [L20] CALL, EXPR addition(m+1, n-1) [L16] COND TRUE n == 0 [L17] return m; [L20] RET, EXPR addition(m+1, n-1) [L20] return addition(m+1, n-1); [L41] RET, EXPR addition(m,n) [L41] int result = addition(m,n); [L42] COND FALSE !(result == m - n) [L45] CALL reach_error() [L3] __assert_fail("0", "Addition02.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 72 SDslu, 55 SDs, 0 SdLazy, 185 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 2934 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...