/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --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/McCarthy91-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:08:26,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:08:26,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:08:26,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:08:26,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:08:26,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:08:26,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:08:26,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:08:26,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:08:26,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:08:26,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:08:26,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:08:26,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:08:26,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:08:26,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:08:26,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:08:26,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:08:26,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:08:26,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:08:26,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:08:26,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:08:26,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:08:26,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:08:26,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:08:26,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 22:08:26,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:08:26,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:08:26,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:08:26,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:08:26,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:08:26,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:08:26,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:08:26,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:08:26,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:08:26,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:08:26,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:08:26,234 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 [2020-08-21 22:08:26,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:08:26,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:08:26,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:08:26,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:08:26,287 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:08:26,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:08:26,288 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:08:26,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:08:26,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:08:26,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:08:26,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:08:26,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:08:26,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:08:26,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:08:26,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:08:26,290 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:08:26,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:08:26,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:08:26,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:08:26,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:08:26,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:08:26,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:08:26,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:08:26,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:08:26,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:08:26,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:08:26,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:08:26,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:08:26,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:08:26,292 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:08:26,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:08:26,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:08:26,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:08:26,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:08:26,642 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:08:26,642 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/McCarthy91-1.c [2020-08-21 22:08:26,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/870d5b0ec/d4320b79655c430d86abb18ba3235ccd/FLAGd6b5164a0 [2020-08-21 22:08:27,178 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:08:27,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/McCarthy91-1.c [2020-08-21 22:08:27,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/870d5b0ec/d4320b79655c430d86abb18ba3235ccd/FLAGd6b5164a0 [2020-08-21 22:08:27,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/870d5b0ec/d4320b79655c430d86abb18ba3235ccd [2020-08-21 22:08:27,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:08:27,579 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:08:27,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:08:27,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:08:27,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:08:27,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:08:27" (1/1) ... [2020-08-21 22:08:27,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef5dd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:27, skipping insertion in model container [2020-08-21 22:08:27,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:08:27" (1/1) ... [2020-08-21 22:08:27,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:08:27,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:08:27,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:08:27,823 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:08:27,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:08:27,854 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:08:27,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:27 WrapperNode [2020-08-21 22:08:27,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:08:27,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:08:27,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:08:27,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:08:27,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:27" (1/1) ... [2020-08-21 22:08:27,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:27" (1/1) ... [2020-08-21 22:08:27,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:27" (1/1) ... [2020-08-21 22:08:27,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:27" (1/1) ... [2020-08-21 22:08:27,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:27" (1/1) ... [2020-08-21 22:08:27,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:27" (1/1) ... [2020-08-21 22:08:27,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:27" (1/1) ... [2020-08-21 22:08:27,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:08:27,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:08:27,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:08:27,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:08:27,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:27" (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 [2020-08-21 22:08:28,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:08:28,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:08:28,039 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-08-21 22:08:28,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:08:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:08:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:08:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-08-21 22:08:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:08:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:08:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:08:28,219 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:08:28,219 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 22:08:28,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:08:28 BoogieIcfgContainer [2020-08-21 22:08:28,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:08:28,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:08:28,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:08:28,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:08:28,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:08:27" (1/3) ... [2020-08-21 22:08:28,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563a718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:08:28, skipping insertion in model container [2020-08-21 22:08:28,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:27" (2/3) ... [2020-08-21 22:08:28,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563a718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:08:28, skipping insertion in model container [2020-08-21 22:08:28,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:08:28" (3/3) ... [2020-08-21 22:08:28,232 INFO L109 eAbstractionObserver]: Analyzing ICFG McCarthy91-1.c [2020-08-21 22:08:28,243 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:08:28,251 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:08:28,265 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:08:28,291 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:08:28,291 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:08:28,291 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:08:28,292 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:08:28,292 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:08:28,292 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:08:28,292 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:08:28,292 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:08:28,311 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-21 22:08:28,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 22:08:28,318 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:08:28,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:08:28,319 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:08:28,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:08:28,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1590359645, now seen corresponding path program 1 times [2020-08-21 22:08:28,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:08:28,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178052576] [2020-08-21 22:08:28,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:08:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:08:28,427 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:08:28,428 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:08:28,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:08:28,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:08:28 BoogieIcfgContainer [2020-08-21 22:08:28,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:08:28,451 INFO L168 Benchmark]: Toolchain (without parser) took 870.46 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 155.8 MB in the end (delta: -54.2 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. [2020-08-21 22:08:28,452 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 22:08:28,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.17 ms. Allocated memory is still 138.4 MB. Free memory was 101.4 MB in the beginning and 92.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:08:28,455 INFO L168 Benchmark]: Boogie Preprocessor took 109.93 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 180.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:08:28,457 INFO L168 Benchmark]: RCFGBuilder took 257.25 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 167.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:08:28,458 INFO L168 Benchmark]: TraceAbstraction took 222.91 ms. Allocated memory is still 201.3 MB. Free memory was 166.9 MB in the beginning and 155.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:08:28,462 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.17 ms. Allocated memory is still 138.4 MB. Free memory was 101.4 MB in the beginning and 92.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.93 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 180.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 257.25 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 167.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222.91 ms. Allocated memory is still 201.3 MB. Free memory was 166.9 MB in the beginning and 155.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 30]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L25] int x = __VERIFIER_nondet_int(); [L26] CALL, EXPR f91(x) [L16] COND TRUE x > 100 [L17] return x -10; [L26] RET, EXPR f91(x) [L26] int result = f91(x); [L27] COND FALSE !(result == 91 || x > 102 && result == x - 10) [L30] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...