/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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-simple/fibo_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-28 05:16:43,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-28 05:16:43,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-28 05:16:43,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-28 05:16:43,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-28 05:16:43,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-28 05:16:43,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-28 05:16:43,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-28 05:16:43,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-28 05:16:43,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-28 05:16:43,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-28 05:16:43,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-28 05:16:43,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-28 05:16:43,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-28 05:16:43,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-28 05:16:43,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-28 05:16:43,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-28 05:16:43,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-28 05:16:43,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-28 05:16:43,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-28 05:16:43,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-28 05:16:43,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-28 05:16:43,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-28 05:16:43,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-28 05:16:43,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-28 05:16:43,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-28 05:16:43,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-28 05:16:43,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-28 05:16:43,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-28 05:16:43,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-28 05:16:43,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-28 05:16:43,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-28 05:16:43,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-28 05:16:43,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-28 05:16:43,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-28 05:16:43,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-28 05:16:43,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-28 05:16:43,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-28 05:16:43,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-28 05:16:43,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-28 05:16:43,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-28 05:16:43,422 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 [2020-08-28 05:16:43,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-28 05:16:43,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-28 05:16:43,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-28 05:16:43,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-28 05:16:43,486 INFO L138 SettingsManager]: * Use SBE=true [2020-08-28 05:16:43,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-28 05:16:43,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-28 05:16:43,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-28 05:16:43,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-28 05:16:43,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-28 05:16:43,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-28 05:16:43,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-28 05:16:43,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-28 05:16:43,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-28 05:16:43,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-28 05:16:43,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-28 05:16:43,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-28 05:16:43,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-28 05:16:43,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-28 05:16:43,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-28 05:16:43,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-28 05:16:43,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 05:16:43,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-28 05:16:43,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-28 05:16:43,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-28 05:16:43,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-28 05:16:43,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-28 05:16:43,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-28 05:16:43,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-28 05:16:43,494 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-28 05:16:44,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-28 05:16:44,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-28 05:16:44,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-28 05:16:44,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-28 05:16:44,053 INFO L275 PluginConnector]: CDTParser initialized [2020-08-28 05:16:44,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-08-28 05:16:44,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d293070d4/6705249e5bf84d8b85280bef02bc97c3/FLAG41be475b4 [2020-08-28 05:16:44,714 INFO L306 CDTParser]: Found 1 translation units. [2020-08-28 05:16:44,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-08-28 05:16:44,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d293070d4/6705249e5bf84d8b85280bef02bc97c3/FLAG41be475b4 [2020-08-28 05:16:45,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d293070d4/6705249e5bf84d8b85280bef02bc97c3 [2020-08-28 05:16:45,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-28 05:16:45,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-28 05:16:45,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-28 05:16:45,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-28 05:16:45,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-28 05:16:45,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:16:45" (1/1) ... [2020-08-28 05:16:45,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570ad94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:45, skipping insertion in model container [2020-08-28 05:16:45,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:16:45" (1/1) ... [2020-08-28 05:16:45,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-28 05:16:45,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-28 05:16:45,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 05:16:45,338 INFO L203 MainTranslator]: Completed pre-run [2020-08-28 05:16:45,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 05:16:45,378 INFO L208 MainTranslator]: Completed translation [2020-08-28 05:16:45,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:45 WrapperNode [2020-08-28 05:16:45,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-28 05:16:45,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-28 05:16:45,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-28 05:16:45,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-28 05:16:45,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:45" (1/1) ... [2020-08-28 05:16:45,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:45" (1/1) ... [2020-08-28 05:16:45,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:45" (1/1) ... [2020-08-28 05:16:45,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:45" (1/1) ... [2020-08-28 05:16:45,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:45" (1/1) ... [2020-08-28 05:16:45,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:45" (1/1) ... [2020-08-28 05:16:45,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:45" (1/1) ... [2020-08-28 05:16:45,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-28 05:16:45,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-28 05:16:45,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-28 05:16:45,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-28 05:16:45,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:45" (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 [2020-08-28 05:16:45,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-28 05:16:45,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-28 05:16:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-08-28 05:16:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-28 05:16:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-28 05:16:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-28 05:16:45,577 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-08-28 05:16:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-28 05:16:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-28 05:16:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-28 05:16:45,801 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-28 05:16:45,802 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-28 05:16:45,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:16:45 BoogieIcfgContainer [2020-08-28 05:16:45,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-28 05:16:45,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-28 05:16:45,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-28 05:16:45,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-28 05:16:45,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 05:16:45" (1/3) ... [2020-08-28 05:16:45,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d223774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:16:45, skipping insertion in model container [2020-08-28 05:16:45,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:45" (2/3) ... [2020-08-28 05:16:45,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d223774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:16:45, skipping insertion in model container [2020-08-28 05:16:45,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:16:45" (3/3) ... [2020-08-28 05:16:45,818 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-1.c [2020-08-28 05:16:45,830 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-28 05:16:45,843 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-28 05:16:45,869 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-28 05:16:45,915 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-28 05:16:45,915 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-28 05:16:45,915 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-28 05:16:45,916 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-28 05:16:45,916 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-28 05:16:45,916 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-28 05:16:45,916 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-28 05:16:45,917 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-28 05:16:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-08-28 05:16:45,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-28 05:16:45,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-28 05:16:45,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-28 05:16:45,957 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-28 05:16:45,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-28 05:16:45,966 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2020-08-28 05:16:45,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-28 05:16:45,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5283272] [2020-08-28 05:16:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-28 05:16:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-28 05:16:46,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-28 05:16:46,095 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Proof production must be enabled (you can do this via setOption). at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:211) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:170) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-28 05:16:46,102 INFO L168 Benchmark]: Toolchain (without parser) took 1019.26 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 104.8 MB in the beginning and 159.8 MB in the end (delta: -54.9 MB). Peak memory consumption was 644.9 kB. Max. memory is 7.1 GB. [2020-08-28 05:16:46,104 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-28 05:16:46,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.17 ms. Allocated memory is still 148.4 MB. Free memory was 104.6 MB in the beginning and 94.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-28 05:16:46,106 INFO L168 Benchmark]: Boogie Preprocessor took 120.49 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 94.9 MB in the beginning and 183.1 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-28 05:16:46,107 INFO L168 Benchmark]: RCFGBuilder took 306.20 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 170.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-28 05:16:46,108 INFO L168 Benchmark]: TraceAbstraction took 290.31 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 159.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-28 05:16:46,112 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.17 ms. Allocated memory is still 148.4 MB. Free memory was 104.6 MB in the beginning and 94.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.49 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 94.9 MB in the beginning and 183.1 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 306.20 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 170.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 290.31 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 159.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Proof production must be enabled (you can do this via setOption). de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Proof production must be enabled (you can do this via setOption).: de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...