/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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 [2020-09-25 05:25:34,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:25:34,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:25:34,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:25:34,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:25:34,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:25:34,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:25:34,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:25:34,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:25:34,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:25:34,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:25:34,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:25:34,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:25:34,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:25:34,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:25:34,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:25:34,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:25:34,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:25:34,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:25:34,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:25:34,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:25:34,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:25:34,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:25:34,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:25:34,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:25:34,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:25:34,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:25:34,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:25:34,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:25:34,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:25:34,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:25:34,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:25:34,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:25:34,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:25:34,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:25:34,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:25:34,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:25:34,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:25:34,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:25:34,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:25:34,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:25:34,538 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 [2020-09-25 05:25:34,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:25:34,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:25:34,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:25:34,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:25:34,595 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:25:34,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:25:34,595 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:25:34,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:25:34,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:25:34,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:25:34,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:25:34,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:25:34,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:25:34,597 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:25:34,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:25:34,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:25:34,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:25:34,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:25:34,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:25:34,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:25:34,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:25:34,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:25:34,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:25:34,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:25:34,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:25:34,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:25:34,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:25:34,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:25:34,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:25:34,604 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:25:35,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:25:35,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:25:35,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:25:35,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:25:35,094 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:25:35,095 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition02.c [2020-09-25 05:25:35,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d8541ed7/2f64b82308dd4dda9dbfc6e16502252a/FLAG5684cd582 [2020-09-25 05:25:35,768 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:25:35,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition02.c [2020-09-25 05:25:35,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d8541ed7/2f64b82308dd4dda9dbfc6e16502252a/FLAG5684cd582 [2020-09-25 05:25:36,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d8541ed7/2f64b82308dd4dda9dbfc6e16502252a [2020-09-25 05:25:36,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:25:36,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:25:36,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:25:36,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:25:36,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:25:36,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:25:36" (1/1) ... [2020-09-25 05:25:36,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c7382a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:36, skipping insertion in model container [2020-09-25 05:25:36,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:25:36" (1/1) ... [2020-09-25 05:25:36,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:25:36,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:25:36,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:25:36,416 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:25:36,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:25:36,451 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:25:36,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:36 WrapperNode [2020-09-25 05:25:36,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:25:36,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:25:36,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:25:36,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:25:36,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:36" (1/1) ... [2020-09-25 05:25:36,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:36" (1/1) ... [2020-09-25 05:25:36,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:36" (1/1) ... [2020-09-25 05:25:36,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:36" (1/1) ... [2020-09-25 05:25:36,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:36" (1/1) ... [2020-09-25 05:25:36,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:36" (1/1) ... [2020-09-25 05:25:36,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:36" (1/1) ... [2020-09-25 05:25:36,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:25:36,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:25:36,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:25:36,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:25:36,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:36" (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 [2020-09-25 05:25:36,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:25:36,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:25:36,658 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-09-25 05:25:36,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:25:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:25:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:25:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-09-25 05:25:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:25:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:25:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:25:36,911 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:25:36,912 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:25:36,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:25:36 BoogieIcfgContainer [2020-09-25 05:25:36,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:25:36,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:25:36,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:25:36,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:25:36,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:25:36" (1/3) ... [2020-09-25 05:25:36,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86438f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:25:36, skipping insertion in model container [2020-09-25 05:25:36,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:36" (2/3) ... [2020-09-25 05:25:36,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86438f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:25:36, skipping insertion in model container [2020-09-25 05:25:36,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:25:36" (3/3) ... [2020-09-25 05:25:36,933 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition02.c [2020-09-25 05:25:36,949 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:25:36,961 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:25:36,987 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:25:37,045 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:25:37,045 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:25:37,046 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:25:37,046 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:25:37,046 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:25:37,046 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:25:37,046 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:25:37,046 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:25:37,072 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-09-25 05:25:37,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 05:25:37,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:37,082 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] [2020-09-25 05:25:37,083 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:37,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:37,090 INFO L82 PathProgramCache]: Analyzing trace with hash 935018920, now seen corresponding path program 1 times [2020-09-25 05:25:37,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:37,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181049416] [2020-09-25 05:25:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:25:37,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 05:25:37,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:25:37,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:25:37,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 05:25:37,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:25:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:37,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:25:37,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:37,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:37,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:37,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:37,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:37,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 05:25:37,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:37,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:25:37,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:37,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:25:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:25:37,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:25:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:25:37,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181049416] [2020-09-25 05:25:37,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:25:37,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:25:37,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894969310] [2020-09-25 05:25:37,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:25:37,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:37,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:25:37,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:25:37,884 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 8 states. [2020-09-25 05:25:38,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:38,151 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-09-25 05:25:38,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:25:38,154 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-09-25 05:25:38,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:38,169 INFO L225 Difference]: With dead ends: 57 [2020-09-25 05:25:38,169 INFO L226 Difference]: Without dead ends: 37 [2020-09-25 05:25:38,174 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 [2020-09-25 05:25:38,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-25 05:25:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-25 05:25:38,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 05:25:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-09-25 05:25:38,240 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 24 [2020-09-25 05:25:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:38,240 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-09-25 05:25:38,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:25:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-09-25 05:25:38,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 05:25:38,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:38,244 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] [2020-09-25 05:25:38,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:25:38,245 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:38,246 INFO L82 PathProgramCache]: Analyzing trace with hash 2135506668, now seen corresponding path program 1 times [2020-09-25 05:25:38,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:38,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986353416] [2020-09-25 05:25:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:38,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:38,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:38,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:38,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:25:38,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:25:38,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 05:25:38,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:38,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 05:25:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:25:38,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:25:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:25:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:38,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:38,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:38,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:25:38,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:38,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:25:38,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:38,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:38,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:25:38,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:25:38,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:25:38,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:25:38,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 05:25:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:25:38,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:25:38,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:25:38,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:25:38,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:25:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:25:38,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:25:38,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:25:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:25:38,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 05:25:38,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:25:38,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:25:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:25:38,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986353416] [2020-09-25 05:25:38,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:25:38,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:25:38,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919949103] [2020-09-25 05:25:38,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:25:38,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:25:38,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:25:38,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:25:38,591 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 4 states. [2020-09-25 05:25:38,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:25:38,620 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-09-25 05:25:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:25:38,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-25 05:25:38,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:25:38,622 INFO L225 Difference]: With dead ends: 53 [2020-09-25 05:25:38,623 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 05:25:38,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:25:38,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 05:25:38,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-09-25 05:25:38,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 05:25:38,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-09-25 05:25:38,634 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 25 [2020-09-25 05:25:38,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:25:38,634 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-09-25 05:25:38,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:25:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-09-25 05:25:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 05:25:38,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:25:38,636 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] [2020-09-25 05:25:38,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:25:38,637 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:25:38,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:25:38,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1044754306, now seen corresponding path program 1 times [2020-09-25 05:25:38,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:25:38,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938481157] [2020-09-25 05:25:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:25:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 05:25:38,652 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 05:25:38,652 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 05:25:38,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:25:38,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:25:38 BoogieIcfgContainer [2020-09-25 05:25:38,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:25:38,684 INFO L168 Benchmark]: Toolchain (without parser) took 2552.80 ms. Allocated memory was 141.0 MB in the beginning and 234.9 MB in the end (delta: 93.8 MB). Free memory was 102.9 MB in the beginning and 188.6 MB in the end (delta: -85.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 7.1 GB. [2020-09-25 05:25:38,685 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-25 05:25:38,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.02 ms. Allocated memory is still 141.0 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 05:25:38,687 INFO L168 Benchmark]: Boogie Preprocessor took 123.25 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 183.0 MB in the end (delta: -90.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 05:25:38,688 INFO L168 Benchmark]: RCFGBuilder took 343.66 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 168.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:25:38,689 INFO L168 Benchmark]: TraceAbstraction took 1759.68 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 168.7 MB in the beginning and 188.6 MB in the end (delta: -19.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:25:38,693 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 312.02 ms. Allocated memory is still 141.0 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.25 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 183.0 MB in the end (delta: -90.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 343.66 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 168.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1759.68 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 168.7 MB in the beginning and 188.6 MB in the end (delta: -19.9 MB). Peak memory consumption was 10.5 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: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 79 SDtfs, 52 SDslu, 145 SDs, 0 SdLazy, 104 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 2929 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...