/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.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:36:02,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:36:02,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:36:02,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:36:02,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:36:02,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:36:02,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:36:02,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:36:02,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:36:02,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:36:02,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:36:02,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:36:02,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:36:02,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:36:02,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:36:02,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:36:02,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:36:02,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:36:02,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:36:02,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:36:02,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:36:02,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:36:02,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:36:02,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:36:02,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 03:36:02,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 03:36:02,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 03:36:02,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 03:36:02,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 03:36:02,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 03:36:02,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 03:36:02,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 03:36:02,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 03:36:02,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 03:36:02,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 03:36:02,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 03:36:02,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 03:36:02,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 03:36:02,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:36:02,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:36:02,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:36:02,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 03:36:02,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:36:02,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:36:02,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:36:02,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:36:02,140 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:36:02,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:36:02,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:36:02,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:36:02,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:36:02,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:36:02,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:36:02,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:36:02,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:36:02,144 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:36:02,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:36:02,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:36:02,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:36:02,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:36:02,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:36:02,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:36:02,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:36:02,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:36:02,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:36:02,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:36:02,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:36:02,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:36:02,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:36:02,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:36:02,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:36:02,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:36:02,513 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:36:02,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:36:02,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:36:02,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:36:02,536 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:36:02,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-07-20 03:36:02,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cff7ca72/35ff41d4e72d4257938252d31f8bab63/FLAG54316a8c4 [2020-07-20 03:36:03,217 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:36:03,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-07-20 03:36:03,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cff7ca72/35ff41d4e72d4257938252d31f8bab63/FLAG54316a8c4 [2020-07-20 03:36:03,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cff7ca72/35ff41d4e72d4257938252d31f8bab63 [2020-07-20 03:36:03,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:36:03,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:36:03,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:36:03,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:36:03,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:36:03,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:36:03" (1/1) ... [2020-07-20 03:36:03,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76573965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:03, skipping insertion in model container [2020-07-20 03:36:03,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:36:03" (1/1) ... [2020-07-20 03:36:03,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:36:03,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:36:03,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:36:03,780 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:36:03,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:36:03,821 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:36:03,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:03 WrapperNode [2020-07-20 03:36:03,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:36:03,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:36:03,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:36:03,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:36:03,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:03" (1/1) ... [2020-07-20 03:36:03,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:03" (1/1) ... [2020-07-20 03:36:03,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:03" (1/1) ... [2020-07-20 03:36:03,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:03" (1/1) ... [2020-07-20 03:36:03,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:03" (1/1) ... [2020-07-20 03:36:03,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:03" (1/1) ... [2020-07-20 03:36:03,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:03" (1/1) ... [2020-07-20 03:36:03,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:36:03,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:36:03,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:36:03,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:36:03,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 03:36:04,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:36:04,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:36:04,055 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-07-20 03:36:04,055 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:36:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-20 03:36:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:36:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-07-20 03:36:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:36:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:36:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:36:04,269 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:36:04,270 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 03:36:04,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:36:04 BoogieIcfgContainer [2020-07-20 03:36:04,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:36:04,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:36:04,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:36:04,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:36:04,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:36:03" (1/3) ... [2020-07-20 03:36:04,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76635050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:36:04, skipping insertion in model container [2020-07-20 03:36:04,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:03" (2/3) ... [2020-07-20 03:36:04,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76635050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:36:04, skipping insertion in model container [2020-07-20 03:36:04,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:36:04" (3/3) ... [2020-07-20 03:36:04,287 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2020-07-20 03:36:04,303 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:36:04,313 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:36:04,332 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:36:04,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:36:04,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:36:04,398 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:36:04,398 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:36:04,400 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:36:04,401 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:36:04,401 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:36:04,401 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:36:04,429 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-20 03:36:04,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 03:36:04,441 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:04,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:04,442 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:04,451 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2020-07-20 03:36:04,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:04,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156423739] [2020-07-20 03:36:04,472 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77b9680f [2020-07-20 03:36:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:36:04,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:36:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:36:04,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:36:04,627 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:36:04,628 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:36:04,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:36:04,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:36:04 BoogieIcfgContainer [2020-07-20 03:36:04,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:36:04,656 INFO L168 Benchmark]: Toolchain (without parser) took 1111.54 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 102.1 MB in the beginning and 156.5 MB in the end (delta: -54.4 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:36:04,657 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 03:36:04,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.58 ms. Allocated memory is still 144.2 MB. Free memory was 101.7 MB in the beginning and 92.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-20 03:36:04,659 INFO L168 Benchmark]: Boogie Preprocessor took 29.35 ms. Allocated memory is still 144.2 MB. Free memory was 92.5 MB in the beginning and 91.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-07-20 03:36:04,660 INFO L168 Benchmark]: RCFGBuilder took 421.47 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 91.0 MB in the beginning and 170.2 MB in the end (delta: -79.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:36:04,661 INFO L168 Benchmark]: TraceAbstraction took 375.58 ms. Allocated memory is still 201.9 MB. Free memory was 169.5 MB in the beginning and 157.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-07-20 03:36:04,665 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.58 ms. Allocated memory is still 144.2 MB. Free memory was 101.7 MB in the beginning and 92.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.35 ms. Allocated memory is still 144.2 MB. Free memory was 92.5 MB in the beginning and 91.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.47 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 91.0 MB in the beginning and 170.2 MB in the end (delta: -79.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 375.58 ms. Allocated memory is still 201.9 MB. Free memory was 169.5 MB in the beginning and 157.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int a = __VERIFIER_nondet_uint(); [L14] unsigned int b = __VERIFIER_nondet_uint(); [L15] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=0] [L5] COND TRUE n == 0 [L6] return m; VAL [\old(m)=0, \old(n)=0, \result=0, m=0, n=0] [L15] RET, EXPR sum(a, b) VAL [a=0, b=0, sum(a, b)=0] [L15] unsigned int result = sum(a, b); [L16] COND TRUE result == a + b VAL [a=0, b=0, result=0] [L17] __VERIFIER_error() VAL [a=0, b=0, result=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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=20occurred 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...