/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/count_up_down-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:12:03,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:12:03,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:12:03,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:12:03,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:12:03,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:12:03,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:12:03,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:12:03,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:12:03,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:12:03,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:12:03,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:12:03,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:12:03,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:12:03,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:12:03,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:12:03,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:12:03,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:12:03,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:12:03,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:12:03,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:12:03,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:12:03,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:12:03,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:12:03,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:12:03,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:12:03,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:12:03,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:12:03,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:12:03,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:12:03,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:12:03,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:12:03,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:12:03,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:12:03,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:12:03,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:12:03,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:12:03,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:12:03,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:12:03,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:12:03,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:12:03,392 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 [2020-08-18 17:12:03,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:12:03,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:12:03,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:12:03,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:12:03,440 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:12:03,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:12:03,441 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:12:03,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:12:03,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:12:03,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:12:03,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:12:03,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:12:03,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:12:03,443 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:12:03,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:12:03,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:12:03,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:12:03,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:12:03,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:12:03,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:12:03,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:12:03,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:12:03,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:12:03,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:12:03,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:12:03,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:12:03,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:12:03,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:12:03,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:12:03,447 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=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:12:03,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:12:03,764 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:12:03,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:12:03,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:12:03,769 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:12:03,770 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/count_up_down-2.c [2020-08-18 17:12:03,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b1ec76b5/1bef209d99c54dd0831e08cee9dad537/FLAGbbe7e81ad [2020-08-18 17:12:04,279 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:12:04,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/count_up_down-2.c [2020-08-18 17:12:04,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b1ec76b5/1bef209d99c54dd0831e08cee9dad537/FLAGbbe7e81ad [2020-08-18 17:12:04,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b1ec76b5/1bef209d99c54dd0831e08cee9dad537 [2020-08-18 17:12:04,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:12:04,687 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:12:04,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:12:04,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:12:04,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:12:04,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:12:04" (1/1) ... [2020-08-18 17:12:04,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bee2e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:04, skipping insertion in model container [2020-08-18 17:12:04,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:12:04" (1/1) ... [2020-08-18 17:12:04,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:12:04,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:12:04,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:12:04,893 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:12:04,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:12:04,923 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:12:04,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:04 WrapperNode [2020-08-18 17:12:04,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:12:04,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:12:04,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:12:04,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:12:04,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:04" (1/1) ... [2020-08-18 17:12:04,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:04" (1/1) ... [2020-08-18 17:12:04,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:04" (1/1) ... [2020-08-18 17:12:04,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:04" (1/1) ... [2020-08-18 17:12:05,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:04" (1/1) ... [2020-08-18 17:12:05,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:04" (1/1) ... [2020-08-18 17:12:05,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:04" (1/1) ... [2020-08-18 17:12:05,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:12:05,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:12:05,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:12:05,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:12:05,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:04" (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 [2020-08-18 17:12:05,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:12:05,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:12:05,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 17:12:05,092 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:12:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:12:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 17:12:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-18 17:12:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:12:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:12:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:12:05,251 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:12:05,251 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 17:12:05,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:12:05 BoogieIcfgContainer [2020-08-18 17:12:05,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:12:05,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:12:05,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:12:05,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:12:05,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:12:04" (1/3) ... [2020-08-18 17:12:05,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8962fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:12:05, skipping insertion in model container [2020-08-18 17:12:05,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:12:04" (2/3) ... [2020-08-18 17:12:05,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8962fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:12:05, skipping insertion in model container [2020-08-18 17:12:05,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:12:05" (3/3) ... [2020-08-18 17:12:05,263 INFO L109 eAbstractionObserver]: Analyzing ICFG count_up_down-2.c [2020-08-18 17:12:05,274 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:12:05,281 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:12:05,295 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:12:05,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:12:05,316 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:12:05,316 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:12:05,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:12:05,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:12:05,317 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:12:05,317 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:12:05,317 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:12:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-18 17:12:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 17:12:05,337 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:12:05,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:12:05,338 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:12:05,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:12:05,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-08-18 17:12:05,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:12:05,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837643495] [2020-08-18 17:12:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:12:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:12:05,449 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:12:05,450 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:12:05,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:12:05,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:12:05 BoogieIcfgContainer [2020-08-18 17:12:05,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:12:05,472 INFO L168 Benchmark]: Toolchain (without parser) took 783.63 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.5 MB in the beginning and 157.5 MB in the end (delta: -57.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. [2020-08-18 17:12:05,473 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 17:12:05,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.73 ms. Allocated memory is still 138.9 MB. Free memory was 100.3 MB in the beginning and 90.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:12:05,475 INFO L168 Benchmark]: Boogie Preprocessor took 103.07 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 180.8 MB in the end (delta: -90.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:12:05,476 INFO L168 Benchmark]: RCFGBuilder took 227.85 ms. Allocated memory is still 201.9 MB. Free memory was 180.8 MB in the beginning and 168.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-08-18 17:12:05,477 INFO L168 Benchmark]: TraceAbstraction took 212.21 ms. Allocated memory is still 201.9 MB. Free memory was 168.2 MB in the beginning and 157.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-18 17:12:05,481 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 235.73 ms. Allocated memory is still 138.9 MB. Free memory was 100.3 MB in the beginning and 90.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.07 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 180.8 MB in the end (delta: -90.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 227.85 ms. Allocated memory is still 201.9 MB. Free memory was 180.8 MB in the beginning and 168.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212.21 ms. Allocated memory is still 201.9 MB. Free memory was 168.2 MB in the beginning and 157.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int n = __VERIFIER_nondet_uint(); [L14] unsigned int x=n, y=0; [L15] COND FALSE !(x>0) [L20] CALL __VERIFIER_assert(y!=n) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 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=17occurred 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, 10 NumberOfCodeBlocks, 10 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...