/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 [2020-10-28 17:13:00,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:13:00,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:13:01,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:13:01,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:13:01,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:13:01,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:13:01,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:13:01,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:13:01,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:13:01,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:13:01,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:13:01,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:13:01,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:13:01,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:13:01,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:13:01,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:13:01,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:13:01,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:13:01,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:13:01,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:13:01,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:13:01,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:13:01,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:13:01,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:13:01,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:13:01,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:13:01,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:13:01,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:13:01,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:13:01,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:13:01,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:13:01,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:13:01,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:13:01,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:13:01,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:13:01,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:13:01,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:13:01,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:13:01,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:13:01,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:13:01,131 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 [2020-10-28 17:13:01,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:13:01,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:13:01,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:13:01,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:13:01,187 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:13:01,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:13:01,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:13:01,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:13:01,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:13:01,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:13:01,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:13:01,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:13:01,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:13:01,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:13:01,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:13:01,190 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:13:01,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:13:01,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:13:01,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:13:01,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:13:01,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:13:01,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:13:01,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:13:01,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:13:01,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:13:01,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:13:01,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:13:01,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:13:01,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:13:01,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:13:01,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:13:01,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:13:01,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:13:01,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:13:01,616 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:13:01,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition02.c [2020-10-28 17:13:01,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fc11442e/34801a71095742328dba227fc1c2f2f0/FLAG4b4df3cc7 [2020-10-28 17:13:02,262 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:13:02,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition02.c [2020-10-28 17:13:02,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fc11442e/34801a71095742328dba227fc1c2f2f0/FLAG4b4df3cc7 [2020-10-28 17:13:02,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fc11442e/34801a71095742328dba227fc1c2f2f0 [2020-10-28 17:13:02,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:13:02,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:13:02,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:13:02,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:13:02,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:13:02,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:13:02" (1/1) ... [2020-10-28 17:13:02,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0b9ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:02, skipping insertion in model container [2020-10-28 17:13:02,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:13:02" (1/1) ... [2020-10-28 17:13:02,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:13:02,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:13:02,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:13:02,855 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:13:02,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:13:02,900 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:13:02,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:02 WrapperNode [2020-10-28 17:13:02,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:13:02,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:13:02,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:13:02,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:13:02,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:02" (1/1) ... [2020-10-28 17:13:02,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:02" (1/1) ... [2020-10-28 17:13:02,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:02" (1/1) ... [2020-10-28 17:13:02,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:02" (1/1) ... [2020-10-28 17:13:02,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:02" (1/1) ... [2020-10-28 17:13:02,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:02" (1/1) ... [2020-10-28 17:13:02,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:02" (1/1) ... [2020-10-28 17:13:02,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:13:02,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:13:02,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:13:02,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:13:02,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:02" (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 [2020-10-28 17:13:03,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:13:03,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:13:03,072 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:13:03,072 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-10-28 17:13:03,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:13:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:13:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:13:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:13:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:13:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:13:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-10-28 17:13:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:13:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:13:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:13:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:13:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:13:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:13:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:13:03,475 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:13:03,475 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 17:13:03,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:13:03 BoogieIcfgContainer [2020-10-28 17:13:03,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:13:03,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:13:03,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:13:03,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:13:03,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:13:02" (1/3) ... [2020-10-28 17:13:03,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65916452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:13:03, skipping insertion in model container [2020-10-28 17:13:03,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:02" (2/3) ... [2020-10-28 17:13:03,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65916452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:13:03, skipping insertion in model container [2020-10-28 17:13:03,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:13:03" (3/3) ... [2020-10-28 17:13:03,486 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition02.c [2020-10-28 17:13:03,498 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:13:03,502 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:13:03,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:13:03,544 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:13:03,545 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:13:03,545 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:13:03,545 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:13:03,545 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:13:03,545 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:13:03,546 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:13:03,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:13:03,583 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-28 17:13:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 17:13:03,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:13:03,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:13:03,590 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:13:03,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:13:03,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2040802546, now seen corresponding path program 1 times [2020-10-28 17:13:03,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:13:03,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404037468] [2020-10-28 17:13:03,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:13:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:03,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:04,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:04,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:13:04,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:04,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-28 17:13:04,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:04,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:04,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:13:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:13:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:13:04,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 17:13:04,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:13:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:04,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:04,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:04,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:13:04,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:13:04,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:04,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:13:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:13:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:13:04,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:13:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:04,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:04,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:04,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:13:04,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:13:04,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:04,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:13:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:04,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:13:04,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:13:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:13:04,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404037468] [2020-10-28 17:13:04,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:13:04,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 17:13:04,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640041505] [2020-10-28 17:13:04,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:13:04,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:13:04,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:13:04,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:13:04,547 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2020-10-28 17:13:04,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:13:04,992 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-10-28 17:13:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:13:04,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-28 17:13:04,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:13:05,004 INFO L225 Difference]: With dead ends: 44 [2020-10-28 17:13:05,005 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 17:13:05,008 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 [2020-10-28 17:13:05,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 17:13:05,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-28 17:13:05,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 17:13:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-10-28 17:13:05,056 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17 [2020-10-28 17:13:05,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:13:05,057 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-10-28 17:13:05,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:13:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-10-28 17:13:05,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 17:13:05,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:13:05,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:13:05,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:13:05,060 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:13:05,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:13:05,061 INFO L82 PathProgramCache]: Analyzing trace with hash -165285543, now seen corresponding path program 1 times [2020-10-28 17:13:05,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:13:05,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806947515] [2020-10-28 17:13:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:13:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:05,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:05,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:05,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:05,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 17:13:05,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:13:05,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-28 17:13:05,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:05,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:13:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 17:13:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:13:05,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:13:05,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:13:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:05,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:05,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:05,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:13:05,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:05,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:13:05,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:05,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:05,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:13:05,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:13:05,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:13:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:13:05,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 17:13:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:13:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:13:05,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:13:05,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:13:05,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:13:05,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:13:05,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:13:05,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:13:05,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:13:05,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:13:05,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:13:05,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:13:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:13:05,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806947515] [2020-10-28 17:13:05,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:13:05,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 17:13:05,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010136178] [2020-10-28 17:13:05,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:13:05,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:13:05,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:13:05,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:13:05,421 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 5 states. [2020-10-28 17:13:05,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:13:05,596 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-10-28 17:13:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:13:05,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-28 17:13:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:13:05,598 INFO L225 Difference]: With dead ends: 37 [2020-10-28 17:13:05,598 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 17:13:05,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:13:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 17:13:05,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-28 17:13:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 17:13:05,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-28 17:13:05,609 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2020-10-28 17:13:05,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:13:05,610 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-28 17:13:05,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:13:05,610 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-28 17:13:05,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 17:13:05,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:13:05,611 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] [2020-10-28 17:13:05,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:13:05,612 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:13:05,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:13:05,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1241281567, now seen corresponding path program 1 times [2020-10-28 17:13:05,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:13:05,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105025201] [2020-10-28 17:13:05,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:13:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 17:13:05,628 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 17:13:05,628 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 17:13:05,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:13:05,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 05:13:05 BoogieIcfgContainer [2020-10-28 17:13:05,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 17:13:05,651 INFO L168 Benchmark]: Toolchain (without parser) took 3005.94 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.9 MB in the beginning and 88.1 MB in the end (delta: 37.8 MB). Peak memory consumption was 69.5 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:05,652 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:13:05,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 115.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:05,654 INFO L168 Benchmark]: Boogie Preprocessor took 65.46 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:05,655 INFO L168 Benchmark]: RCFGBuilder took 501.21 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 100.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:05,656 INFO L168 Benchmark]: TraceAbstraction took 2169.70 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.0 MB in the beginning and 88.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 43.2 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:05,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 252.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 115.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.46 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 501.21 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 100.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2169.70 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.0 MB in the beginning and 88.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 43.2 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: 2.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 58 SDslu, 47 SDs, 0 SdLazy, 143 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 2350 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...