./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test26-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/test26-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8f6e10ab52ab9f08c67c483ecb655de1c57a1f14 ............................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:05:14,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:05:14,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:05:14,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:05:14,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:05:14,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:05:14,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:05:14,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:05:14,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:05:14,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:05:14,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:05:14,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:05:14,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:05:14,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:05:14,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:05:14,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:05:14,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:05:14,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:05:14,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:05:14,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:05:14,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:05:14,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:05:14,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:05:14,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:05:14,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:05:14,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:05:14,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:05:14,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:05:14,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:05:14,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:05:14,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:05:14,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:05:14,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:05:14,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:05:14,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:05:14,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:05:14,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:05:14,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:05:14,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:05:14,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:05:14,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:05:14,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:05:14,346 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:05:14,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:05:14,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:05:14,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:05:14,351 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:05:14,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:05:14,351 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:05:14,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:05:14,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:05:14,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:05:14,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:05:14,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:05:14,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:05:14,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:05:14,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:05:14,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:05:14,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:05:14,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:05:14,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:05:14,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:05:14,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:05:14,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:05:14,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:05:14,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:05:14,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:05:14,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:05:14,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:05:14,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:05:14,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:05:14,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f6e10ab52ab9f08c67c483ecb655de1c57a1f14 [2020-10-25 22:05:14,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:05:14,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:05:14,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:05:14,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:05:14,799 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:05:14,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test26-2.c [2020-10-25 22:05:14,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60445116/6172fa4e209146b1ad4130f74b1c5d82/FLAG534e35aad [2020-10-25 22:05:15,523 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:05:15,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test26-2.c [2020-10-25 22:05:15,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60445116/6172fa4e209146b1ad4130f74b1c5d82/FLAG534e35aad [2020-10-25 22:05:15,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60445116/6172fa4e209146b1ad4130f74b1c5d82 [2020-10-25 22:05:15,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:05:15,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:05:15,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:05:15,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:05:15,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:05:15,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:05:15" (1/1) ... [2020-10-25 22:05:15,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d89df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:15, skipping insertion in model container [2020-10-25 22:05:15,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:05:15" (1/1) ... [2020-10-25 22:05:15,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:05:15,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:05:16,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:05:16,154 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:05:16,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:05:16,185 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:05:16,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:16 WrapperNode [2020-10-25 22:05:16,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:05:16,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:05:16,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:05:16,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:05:16,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:16" (1/1) ... [2020-10-25 22:05:16,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:16" (1/1) ... [2020-10-25 22:05:16,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:05:16,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:05:16,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:05:16,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:05:16,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:16" (1/1) ... [2020-10-25 22:05:16,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:16" (1/1) ... [2020-10-25 22:05:16,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:16" (1/1) ... [2020-10-25 22:05:16,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:16" (1/1) ... [2020-10-25 22:05:16,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:16" (1/1) ... [2020-10-25 22:05:16,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:16" (1/1) ... [2020-10-25 22:05:16,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:16" (1/1) ... [2020-10-25 22:05:16,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:05:16,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:05:16,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:05:16,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:05:16,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:16" (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 [2020-10-25 22:05:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:05:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:05:16,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:05:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:05:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:05:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:05:16,536 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:05:16,536 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-25 22:05:16,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:05:16 BoogieIcfgContainer [2020-10-25 22:05:16,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:05:16,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:05:16,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:05:16,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:05:16,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:05:15" (1/3) ... [2020-10-25 22:05:16,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f944260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:05:16, skipping insertion in model container [2020-10-25 22:05:16,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:16" (2/3) ... [2020-10-25 22:05:16,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f944260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:05:16, skipping insertion in model container [2020-10-25 22:05:16,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:05:16" (3/3) ... [2020-10-25 22:05:16,553 INFO L111 eAbstractionObserver]: Analyzing ICFG test26-2.c [2020-10-25 22:05:16,567 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:05:16,572 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:05:16,589 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:05:16,623 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:05:16,624 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:05:16,624 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:05:16,624 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:05:16,624 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:05:16,625 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:05:16,625 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:05:16,625 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:05:16,643 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-25 22:05:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-25 22:05:16,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:05:16,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-25 22:05:16,650 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:05:16,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:05:16,658 INFO L82 PathProgramCache]: Analyzing trace with hash 28692805, now seen corresponding path program 1 times [2020-10-25 22:05:16,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:05:16,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772525952] [2020-10-25 22:05:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:05:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:05:16,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:05:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:05:16,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:05:16,907 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:05:16,908 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:05:16,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:05:16,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:05:16 BoogieIcfgContainer [2020-10-25 22:05:16,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:05:16,946 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:05:16,947 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:05:16,947 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:05:16,948 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:05:16" (3/4) ... [2020-10-25 22:05:16,950 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:05:17,032 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:05:17,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:05:17,037 INFO L168 Benchmark]: Toolchain (without parser) took 1143.38 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.9 MB in the beginning and 34.1 MB in the end (delta: -12.2 MB). Peak memory consumption was 979.9 kB. Max. memory is 16.1 GB. [2020-10-25 22:05:17,040 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 44.0 MB. Free memory is still 28.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:05:17,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.88 ms. Allocated memory is still 44.0 MB. Free memory was 21.2 MB in the beginning and 21.3 MB in the end (delta: -106.9 kB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:17,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.99 ms. Allocated memory is still 44.0 MB. Free memory was 21.3 MB in the beginning and 19.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:05:17,050 INFO L168 Benchmark]: Boogie Preprocessor took 21.90 ms. Allocated memory is still 44.0 MB. Free memory was 19.8 MB in the beginning and 18.9 MB in the end (delta: 942.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:17,051 INFO L168 Benchmark]: RCFGBuilder took 293.86 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 18.8 MB in the beginning and 29.8 MB in the end (delta: -11.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:17,052 INFO L168 Benchmark]: TraceAbstraction took 399.27 ms. Allocated memory is still 54.5 MB. Free memory was 29.6 MB in the beginning and 35.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:17,053 INFO L168 Benchmark]: Witness Printer took 86.14 ms. Allocated memory is still 54.5 MB. Free memory was 35.8 MB in the beginning and 34.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:17,062 INFO L339 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 44.0 MB. Free memory is still 28.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.88 ms. Allocated memory is still 44.0 MB. Free memory was 21.2 MB in the beginning and 21.3 MB in the end (delta: -106.9 kB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.99 ms. Allocated memory is still 44.0 MB. Free memory was 21.3 MB in the beginning and 19.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.90 ms. Allocated memory is still 44.0 MB. Free memory was 19.8 MB in the beginning and 18.9 MB in the end (delta: 942.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 293.86 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 18.8 MB in the beginning and 29.8 MB in the end (delta: -11.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 399.27 ms. Allocated memory is still 54.5 MB. Free memory was 29.6 MB in the beginning and 35.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Witness Printer took 86.14 ms. Allocated memory is still 54.5 MB. Free memory was 35.8 MB in the beginning and 34.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L5-L7] struct dummy { int a, b; } global = {0, 1}; VAL [global={5:0}] [L16] struct dummy *pd = &global; [L11] EXPR \read(*pb) [L11] *pa = *pb [L20] EXPR pd->a [L20] EXPR global.b VAL [global={5:0}] [L20] COND TRUE pd->a != global.b [L3] __assert_fail("0", "test26-2.c", 3, "reach_error") VAL [global={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 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=10occurred 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, 5 NumberOfCodeBlocks, 5 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...