/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -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-d623d84 [2020-07-20 13:47:49,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:47:49,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:47:49,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:47:49,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:47:49,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:47:49,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:47:49,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:47:49,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:47:49,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:47:49,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:47:49,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:47:49,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:47:49,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:47:49,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:47:49,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:47:49,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:47:49,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:47:49,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:47:49,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:47:49,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:47:49,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:47:49,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:47:49,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:47:49,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:47:49,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:47:49,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:47:49,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:47:49,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:47:49,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:47:49,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:47:49,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:47:49,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:47:50,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:47:50,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:47:50,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:47:50,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:47:50,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:47:50,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:47:50,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:47:50,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:47:50,008 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 13:47:50,038 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:47:50,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:47:50,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:47:50,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:47:50,041 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:47:50,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:47:50,041 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:47:50,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:47:50,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:47:50,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:47:50,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:47:50,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:47:50,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:47:50,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:47:50,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:47:50,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:47:50,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:47:50,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:47:50,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:47:50,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:47:50,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:47:50,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:47:50,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:47:50,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:47:50,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:47:50,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:47:50,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:47:50,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:47:50,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:47:50,047 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 [2020-07-20 13:47:50,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:47:50,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:47:50,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:47:50,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:47:50,432 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:47:50,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-07-20 13:47:50,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ebd30ae/4ffa989d20d144ec94d47b8cd3de37e0/FLAGd797d0b28 [2020-07-20 13:47:51,055 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:47:51,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_non_eq-3.c [2020-07-20 13:47:51,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ebd30ae/4ffa989d20d144ec94d47b8cd3de37e0/FLAGd797d0b28 [2020-07-20 13:47:51,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ebd30ae/4ffa989d20d144ec94d47b8cd3de37e0 [2020-07-20 13:47:51,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:47:51,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:47:51,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:47:51,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:47:51,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:47:51,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:51" (1/1) ... [2020-07-20 13:47:51,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7958cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:51, skipping insertion in model container [2020-07-20 13:47:51,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:51" (1/1) ... [2020-07-20 13:47:51,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:47:51,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:47:51,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:47:51,650 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:47:51,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:47:51,683 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:47:51,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:51 WrapperNode [2020-07-20 13:47:51,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:47:51,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:47:51,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:47:51,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:47:51,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:51" (1/1) ... [2020-07-20 13:47:51,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:51" (1/1) ... [2020-07-20 13:47:51,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:51" (1/1) ... [2020-07-20 13:47:51,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:51" (1/1) ... [2020-07-20 13:47:51,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:51" (1/1) ... [2020-07-20 13:47:51,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:51" (1/1) ... [2020-07-20 13:47:51,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:51" (1/1) ... [2020-07-20 13:47:51,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:47:51,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:47:51,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:47:51,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:47:51,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:51" (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 13:47:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:47:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:47:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-07-20 13:47:51,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:47:51,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-20 13:47:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:47:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-07-20 13:47:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:47:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:47:51,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:47:52,078 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:47:52,079 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 13:47:52,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:52 BoogieIcfgContainer [2020-07-20 13:47:52,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:47:52,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:47:52,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:47:52,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:47:52,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:47:51" (1/3) ... [2020-07-20 13:47:52,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202520e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:52, skipping insertion in model container [2020-07-20 13:47:52,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:51" (2/3) ... [2020-07-20 13:47:52,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202520e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:52, skipping insertion in model container [2020-07-20 13:47:52,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:52" (3/3) ... [2020-07-20 13:47:52,104 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2020-07-20 13:47:52,125 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:47:52,137 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:47:52,179 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:47:52,220 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:47:52,220 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:47:52,221 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:47:52,221 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:47:52,221 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:47:52,224 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:47:52,224 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:47:52,224 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:47:52,241 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-20 13:47:52,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 13:47:52,248 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:47:52,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:47:52,249 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:47:52,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:47:52,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2020-07-20 13:47:52,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:47:52,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741796267] [2020-07-20 13:47:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:47:52,339 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:47:52,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:47:52,341 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:47:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:47:52,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:47:52,374 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:47:52,376 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:47:52,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:47:52,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:47:52 BoogieIcfgContainer [2020-07-20 13:47:52,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:47:52,619 INFO L168 Benchmark]: Toolchain (without parser) took 1173.72 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 100.6 MB in the beginning and 152.4 MB in the end (delta: -51.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-20 13:47:52,620 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory is still 118.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 13:47:52,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.07 ms. Allocated memory is still 138.9 MB. Free memory was 99.7 MB in the beginning and 90.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:47:52,622 INFO L168 Benchmark]: Boogie Preprocessor took 30.60 ms. Allocated memory is still 138.9 MB. Free memory was 90.9 MB in the beginning and 89.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:47:52,623 INFO L168 Benchmark]: RCFGBuilder took 367.90 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 89.2 MB in the beginning and 167.9 MB in the end (delta: -78.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-20 13:47:52,624 INFO L168 Benchmark]: TraceAbstraction took 526.83 ms. Allocated memory is still 200.3 MB. Free memory was 167.9 MB in the beginning and 152.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-07-20 13:47:52,629 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory is still 118.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 237.07 ms. Allocated memory is still 138.9 MB. Free memory was 99.7 MB in the beginning and 90.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.60 ms. Allocated memory is still 138.9 MB. Free memory was 90.9 MB in the beginning and 89.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 367.90 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 89.2 MB in the beginning and 167.9 MB in the end (delta: -78.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 526.83 ms. Allocated memory is still 200.3 MB. Free memory was 167.9 MB in the beginning and 152.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 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)=4294967295, \old(n)=0] [L5] COND TRUE n == 0 [L6] return m; VAL [\old(m)=4294967295, \old(n)=0, \result=-4294967297, m=4294967295, n=0] [L15] RET, EXPR sum(a, b) VAL [a=0, b=4294967295, sum(a, b)=-4294967297] [L15] unsigned int result = sum(a, b); [L16] COND TRUE result == a + b VAL [a=0, b=4294967295, result=4294967295] [L17] __VERIFIER_error() VAL [a=0, b=4294967295, result=4294967295] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, 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, 4 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...