./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ssinaf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/array-fpi/ssinaf.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 4618b75d413d783d7edda184b58fd1988f40d7dc ................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-19 22:19:29,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:19:29,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:19:29,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:19:29,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:19:29,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:19:29,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:19:29,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:19:29,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:19:29,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:19:29,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:19:29,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:19:29,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:19:29,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:19:29,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:19:29,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:19:29,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:19:29,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:19:29,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:19:29,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:19:29,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:19:29,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:19:29,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:19:29,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:19:29,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:19:29,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:19:29,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:19:29,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:19:29,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:19:29,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:19:29,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:19:29,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:19:29,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:19:29,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:19:29,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:19:29,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:19:29,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:19:29,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:19:29,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:19:29,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:19:29,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:19:29,317 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:19:29,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:19:29,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:19:29,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:19:29,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:19:29,369 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:19:29,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:19:29,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:19:29,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:19:29,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:19:29,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:19:29,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:19:29,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:19:29,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:19:29,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:19:29,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:19:29,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:19:29,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:19:29,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:19:29,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:19:29,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:19:29,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:19:29,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:19:29,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:19:29,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:19:29,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:19:29,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:19:29,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:19:29,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:19:29,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:19:29,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 4618b75d413d783d7edda184b58fd1988f40d7dc [2020-10-19 22:19:29,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:19:29,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:19:29,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:19:29,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:19:29,630 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:19:29,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ssinaf.c [2020-10-19 22:19:29,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c8f73e0b/7373ad6777354a35b22bd8cc416ac310/FLAG588808b38 [2020-10-19 22:19:30,264 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:19:30,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssinaf.c [2020-10-19 22:19:30,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c8f73e0b/7373ad6777354a35b22bd8cc416ac310/FLAG588808b38 [2020-10-19 22:19:30,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c8f73e0b/7373ad6777354a35b22bd8cc416ac310 [2020-10-19 22:19:30,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:19:30,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:19:30,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:19:30,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:19:30,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:19:30,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:19:30" (1/1) ... [2020-10-19 22:19:30,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa80e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:19:30, skipping insertion in model container [2020-10-19 22:19:30,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:19:30" (1/1) ... [2020-10-19 22:19:30,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:19:30,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:19:30,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:19:30,824 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:19:30,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:19:30,879 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:19:30,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:19:30 WrapperNode [2020-10-19 22:19:30,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:19:30,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:19:30,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:19:30,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:19:30,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:19:30" (1/1) ... [2020-10-19 22:19:30,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:19:30" (1/1) ... [2020-10-19 22:19:30,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:19:30,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:19:30,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:19:30,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:19:30,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:19:30" (1/1) ... [2020-10-19 22:19:30,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:19:30" (1/1) ... [2020-10-19 22:19:30,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:19:30" (1/1) ... [2020-10-19 22:19:30,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:19:30" (1/1) ... [2020-10-19 22:19:30,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:19:30" (1/1) ... [2020-10-19 22:19:30,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:19:30" (1/1) ... [2020-10-19 22:19:30,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:19:30" (1/1) ... [2020-10-19 22:19:30,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:19:30,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:19:30,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:19:30,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:19:30,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:19:30" (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 [2020-10-19 22:19:31,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:19:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:19:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:19:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:19:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:19:31,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:19:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:19:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 22:19:31,363 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:19:31,364 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-19 22:19:31,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:19:31 BoogieIcfgContainer [2020-10-19 22:19:31,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:19:31,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:19:31,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:19:31,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:19:31,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:19:30" (1/3) ... [2020-10-19 22:19:31,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c575e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:19:31, skipping insertion in model container [2020-10-19 22:19:31,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:19:30" (2/3) ... [2020-10-19 22:19:31,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c575e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:19:31, skipping insertion in model container [2020-10-19 22:19:31,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:19:31" (3/3) ... [2020-10-19 22:19:31,378 INFO L111 eAbstractionObserver]: Analyzing ICFG ssinaf.c [2020-10-19 22:19:31,396 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:19:31,405 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:19:31,423 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:19:31,452 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:19:31,453 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:19:31,453 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:19:31,453 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:19:31,454 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:19:31,454 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:19:31,454 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:19:31,454 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:19:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-19 22:19:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:19:31,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:19:31,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:19:31,485 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:19:31,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:19:31,493 INFO L82 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2020-10-19 22:19:31,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:19:31,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840308968] [2020-10-19 22:19:31,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:19:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:19:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:19:31,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840308968] [2020-10-19 22:19:31,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:19:31,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:19:31,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599213500] [2020-10-19 22:19:31,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:19:31,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:19:31,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:19:31,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:19:31,698 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-10-19 22:19:31,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:19:31,719 INFO L93 Difference]: Finished difference Result 57 states and 83 transitions. [2020-10-19 22:19:31,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:19:31,721 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-10-19 22:19:31,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:19:31,731 INFO L225 Difference]: With dead ends: 57 [2020-10-19 22:19:31,732 INFO L226 Difference]: Without dead ends: 26 [2020-10-19 22:19:31,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:19:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-19 22:19:31,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-19 22:19:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-19 22:19:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-10-19 22:19:31,769 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2020-10-19 22:19:31,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:19:31,770 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-10-19 22:19:31,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:19:31,771 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-10-19 22:19:31,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:19:31,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:19:31,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:19:31,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:19:31,773 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:19:31,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:19:31,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2020-10-19 22:19:31,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:19:31,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521990263] [2020-10-19 22:19:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:19:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:19:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:19:31,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521990263] [2020-10-19 22:19:31,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:19:31,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:19:31,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512350182] [2020-10-19 22:19:31,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:19:31,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:19:31,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:19:31,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:19:31,875 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 4 states. [2020-10-19 22:19:32,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:19:32,025 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2020-10-19 22:19:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:19:32,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-19 22:19:32,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:19:32,027 INFO L225 Difference]: With dead ends: 61 [2020-10-19 22:19:32,028 INFO L226 Difference]: Without dead ends: 42 [2020-10-19 22:19:32,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:19:32,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-19 22:19:32,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2020-10-19 22:19:32,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-19 22:19:32,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-19 22:19:32,038 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2020-10-19 22:19:32,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:19:32,039 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-19 22:19:32,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:19:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-19 22:19:32,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 22:19:32,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:19:32,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:19:32,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:19:32,042 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:19:32,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:19:32,042 INFO L82 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2020-10-19 22:19:32,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:19:32,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113219474] [2020-10-19 22:19:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:19:32,082 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-19 22:19:32,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733484574] [2020-10-19 22:19:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:19:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:19:32,211 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:19:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:19:32,265 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:19:32,353 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:19:32,353 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:19:32,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-19 22:19:32,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:19:32 BoogieIcfgContainer [2020-10-19 22:19:32,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:19:32,631 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:19:32,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:19:32,632 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:19:32,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:19:31" (3/4) ... [2020-10-19 22:19:32,636 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:19:32,712 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:19:32,713 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:19:32,716 INFO L168 Benchmark]: Toolchain (without parser) took 2164.07 ms. Allocated memory was 43.0 MB in the beginning and 50.9 MB in the end (delta: 7.9 MB). Free memory was 25.7 MB in the beginning and 28.0 MB in the end (delta: -2.3 MB). Peak memory consumption was 5.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:19:32,717 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 32.5 MB. Free memory was 11.5 MB in the beginning and 11.5 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-19 22:19:32,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.55 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 24.8 MB in the beginning and 26.8 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:19:32,718 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.51 ms. Allocated memory is still 45.1 MB. Free memory was 26.8 MB in the beginning and 24.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:19:32,719 INFO L168 Benchmark]: Boogie Preprocessor took 33.33 ms. Allocated memory is still 45.1 MB. Free memory was 24.9 MB in the beginning and 23.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:19:32,720 INFO L168 Benchmark]: RCFGBuilder took 406.62 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 23.2 MB in the beginning and 23.1 MB in the end (delta: 46.6 kB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:19:32,721 INFO L168 Benchmark]: TraceAbstraction took 1262.92 ms. Allocated memory was 45.6 MB in the beginning and 50.9 MB in the end (delta: 5.2 MB). Free memory was 22.6 MB in the beginning and 31.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:19:32,721 INFO L168 Benchmark]: Witness Printer took 81.77 ms. Allocated memory is still 50.9 MB. Free memory was 31.8 MB in the beginning and 28.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:19:32,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 32.5 MB. Free memory was 11.5 MB in the beginning and 11.5 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 319.55 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 24.8 MB in the beginning and 26.8 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 45.51 ms. Allocated memory is still 45.1 MB. Free memory was 26.8 MB in the beginning and 24.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 33.33 ms. Allocated memory is still 45.1 MB. Free memory was 24.9 MB in the beginning and 23.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 406.62 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 23.2 MB in the beginning and 23.1 MB in the end (delta: 46.6 kB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1262.92 ms. Allocated memory was 45.6 MB in the beginning and 50.9 MB in the end (delta: 5.2 MB). Free memory was 22.6 MB in the beginning and 31.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 14.3 GB. * Witness Printer took 81.77 ms. Allocated memory is still 50.9 MB. Free memory was 31.8 MB in the beginning and 28.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1] [L32] COND TRUE i