/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -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-c90d42b [2020-09-24 20:22:50,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:22:50,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:22:50,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:22:50,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:22:50,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:22:50,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:22:50,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:22:50,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:22:50,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:22:50,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:22:50,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:22:50,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:22:50,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:22:50,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:22:50,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:22:50,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:22:50,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:22:50,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:22:50,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:22:50,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:22:50,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:22:50,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:22:50,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:22:50,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:22:50,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:22:50,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:22:50,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:22:50,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:22:50,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:22:50,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:22:50,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:22:50,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:22:50,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:22:50,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:22:50,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:22:50,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:22:50,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:22:50,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:22:50,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:22:51,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:22:51,003 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 [2020-09-24 20:22:51,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:22:51,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:22:51,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:22:51,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:22:51,055 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:22:51,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:22:51,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:22:51,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:22:51,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:22:51,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:22:51,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:22:51,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:22:51,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:22:51,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:22:51,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:22:51,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:22:51,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:22:51,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:22:51,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:22:51,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:22:51,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:22:51,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:22:51,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:22:51,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:22:51,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:22:51,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:22:51,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:22:51,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:22:51,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:22:51,062 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:22:51,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:22:51,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:22:51,614 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:22:51,616 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:22:51,617 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:22:51,618 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition02.c [2020-09-24 20:22:51,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6f3c20c6/3a01c21bdf9c4de08a5248bc29ad7e7c/FLAGcc718eb93 [2020-09-24 20:22:52,291 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:22:52,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition02.c [2020-09-24 20:22:52,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6f3c20c6/3a01c21bdf9c4de08a5248bc29ad7e7c/FLAGcc718eb93 [2020-09-24 20:22:52,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6f3c20c6/3a01c21bdf9c4de08a5248bc29ad7e7c [2020-09-24 20:22:52,644 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:22:52,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:22:52,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:52,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:22:52,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:22:52,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:52" (1/1) ... [2020-09-24 20:22:52,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ad3e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:52, skipping insertion in model container [2020-09-24 20:22:52,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:52" (1/1) ... [2020-09-24 20:22:52,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:22:52,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:22:52,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:52,947 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:22:52,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:52,984 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:22:52,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:52 WrapperNode [2020-09-24 20:22:52,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:52,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:22:52,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:22:52,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:22:52,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:52" (1/1) ... [2020-09-24 20:22:53,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:52" (1/1) ... [2020-09-24 20:22:53,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:52" (1/1) ... [2020-09-24 20:22:53,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:52" (1/1) ... [2020-09-24 20:22:53,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:52" (1/1) ... [2020-09-24 20:22:53,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:52" (1/1) ... [2020-09-24 20:22:53,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:52" (1/1) ... [2020-09-24 20:22:53,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:22:53,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:22:53,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:22:53,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:22:53,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:52" (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 [2020-09-24 20:22:53,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:22:53,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:22:53,175 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-09-24 20:22:53,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:22:53,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:22:53,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:22:53,176 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-09-24 20:22:53,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:22:53,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:22:53,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:22:53,427 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:22:53,427 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:22:53,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:53 BoogieIcfgContainer [2020-09-24 20:22:53,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:22:53,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:22:53,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:22:53,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:22:53,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:22:52" (1/3) ... [2020-09-24 20:22:53,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b25c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:53, skipping insertion in model container [2020-09-24 20:22:53,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:52" (2/3) ... [2020-09-24 20:22:53,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b25c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:53, skipping insertion in model container [2020-09-24 20:22:53,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:53" (3/3) ... [2020-09-24 20:22:53,444 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition02.c [2020-09-24 20:22:53,461 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:22:53,474 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:22:53,504 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:22:53,584 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:22:53,584 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:22:53,584 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:22:53,584 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:22:53,585 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:22:53,585 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:22:53,585 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:22:53,585 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:22:53,611 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-09-24 20:22:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 20:22:53,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:53,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:53,621 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:53,628 INFO L82 PathProgramCache]: Analyzing trace with hash 935018920, now seen corresponding path program 1 times [2020-09-24 20:22:53,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:53,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561827649] [2020-09-24 20:22:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:53,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:54,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:22:54,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:54,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-24 20:22:54,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:54,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:22:54,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:22:54,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:22:54,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:22:54,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:54,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:54,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:54,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:54,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:22:54,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:54,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:54,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:54,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:54,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:54,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:54,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:54,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 20:22:54,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:22:54,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:54,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:54,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:22:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:22:54,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561827649] [2020-09-24 20:22:54,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:22:54,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:22:54,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050048033] [2020-09-24 20:22:54,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:22:54,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:54,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:22:54,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:22:54,478 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 8 states. [2020-09-24 20:22:54,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:54,746 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-09-24 20:22:54,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:22:54,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-09-24 20:22:54,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:54,772 INFO L225 Difference]: With dead ends: 57 [2020-09-24 20:22:54,772 INFO L226 Difference]: Without dead ends: 37 [2020-09-24 20:22:54,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:22:54,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-24 20:22:54,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-24 20:22:54,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-24 20:22:54,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-09-24 20:22:54,843 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 24 [2020-09-24 20:22:54,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:54,844 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-09-24 20:22:54,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:22:54,844 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-09-24 20:22:54,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 20:22:54,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:54,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:54,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:22:54,848 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:54,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:54,849 INFO L82 PathProgramCache]: Analyzing trace with hash 2135506668, now seen corresponding path program 1 times [2020-09-24 20:22:54,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:54,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779619290] [2020-09-24 20:22:54,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:55,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:55,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:22:55,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:55,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-24 20:22:55,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:55,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:22:55,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:22:55,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:22:55,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:22:55,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:55,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:55,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:55,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:55,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:22:55,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:55,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:55,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:22:55,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:55,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:55,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:55,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:55,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:22:55,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:55,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 20:22:55,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:55,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:22:55,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:22:55,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:22:55,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:22:55,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779619290] [2020-09-24 20:22:55,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:22:55,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:22:55,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925750391] [2020-09-24 20:22:55,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:22:55,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:55,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:22:55,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:22:55,246 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 6 states. [2020-09-24 20:22:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:55,343 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-09-24 20:22:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:22:55,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-24 20:22:55,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:55,345 INFO L225 Difference]: With dead ends: 48 [2020-09-24 20:22:55,345 INFO L226 Difference]: Without dead ends: 32 [2020-09-24 20:22:55,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:22:55,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-24 20:22:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-24 20:22:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 20:22:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-09-24 20:22:55,355 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2020-09-24 20:22:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:55,356 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-09-24 20:22:55,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:22:55,356 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-09-24 20:22:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:22:55,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:55,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:55,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:22:55,359 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:55,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:55,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1044754306, now seen corresponding path program 1 times [2020-09-24 20:22:55,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:55,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006790654] [2020-09-24 20:22:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:22:55,375 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:22:55,375 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:22:55,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:22:55,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:22:55 BoogieIcfgContainer [2020-09-24 20:22:55,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:22:55,410 INFO L168 Benchmark]: Toolchain (without parser) took 2762.84 ms. Allocated memory was 143.1 MB in the beginning and 231.2 MB in the end (delta: 88.1 MB). Free memory was 106.0 MB in the beginning and 167.4 MB in the end (delta: -61.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:22:55,411 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-24 20:22:55,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.01 ms. Allocated memory is still 143.1 MB. Free memory was 105.2 MB in the beginning and 95.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:22:55,413 INFO L168 Benchmark]: Boogie Preprocessor took 32.90 ms. Allocated memory is still 143.1 MB. Free memory was 95.7 MB in the beginning and 94.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:22:55,414 INFO L168 Benchmark]: RCFGBuilder took 414.56 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 94.4 MB in the beginning and 169.8 MB in the end (delta: -75.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:22:55,416 INFO L168 Benchmark]: TraceAbstraction took 1971.65 ms. Allocated memory was 204.5 MB in the beginning and 231.2 MB in the end (delta: 26.7 MB). Free memory was 168.9 MB in the beginning and 167.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:22:55,420 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 333.01 ms. Allocated memory is still 143.1 MB. Free memory was 105.2 MB in the beginning and 95.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.90 ms. Allocated memory is still 143.1 MB. Free memory was 95.7 MB in the beginning and 94.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 414.56 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 94.4 MB in the beginning and 169.8 MB in the end (delta: -75.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1971.65 ms. Allocated memory was 204.5 MB in the beginning and 231.2 MB in the end (delta: 26.7 MB). Free memory was 168.9 MB in the beginning and 167.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 28.3 MB. 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, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 75 SDslu, 183 SDs, 0 SdLazy, 141 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 3877 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...