./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ncompf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/array-fpi/ncompf.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 c18491048038839cd2bebabad98c6df95c5a2283 ....................................................................................................................................................................................................................................................................................................................... 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 0.2.1-dev-20ed64e [2021-08-25 19:23:05,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 19:23:05,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 19:23:05,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 19:23:05,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 19:23:05,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 19:23:05,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 19:23:05,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 19:23:05,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 19:23:05,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 19:23:05,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 19:23:05,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 19:23:05,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 19:23:05,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 19:23:05,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 19:23:05,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 19:23:05,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 19:23:05,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 19:23:05,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 19:23:05,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 19:23:05,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 19:23:05,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 19:23:05,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 19:23:05,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 19:23:05,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 19:23:05,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 19:23:05,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 19:23:05,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 19:23:05,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 19:23:05,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 19:23:05,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 19:23:05,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 19:23:05,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 19:23:05,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 19:23:05,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 19:23:05,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 19:23:05,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 19:23:05,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 19:23:05,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 19:23:05,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 19:23:05,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 19:23:05,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 19:23:05,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 19:23:05,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 19:23:05,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 19:23:05,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 19:23:05,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 19:23:05,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 19:23:05,283 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 19:23:05,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 19:23:05,284 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 19:23:05,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 19:23:05,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 19:23:05,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 19:23:05,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 19:23:05,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 19:23:05,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 19:23:05,285 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 19:23:05,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 19:23:05,285 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 19:23:05,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 19:23:05,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 19:23:05,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 19:23:05,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 19:23:05,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 19:23:05,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 19:23:05,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 19:23:05,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 19:23:05,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 19:23:05,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 19:23:05,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 19:23:05,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 19:23:05,288 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18491048038839cd2bebabad98c6df95c5a2283 [2021-08-25 19:23:05,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 19:23:05,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 19:23:05,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 19:23:05,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 19:23:05,628 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 19:23:05,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ncompf.c [2021-08-25 19:23:05,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf5ea99ed/025f51ebffc84ba9816e143047ef7dcd/FLAG496b68ba8 [2021-08-25 19:23:06,178 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 19:23:06,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncompf.c [2021-08-25 19:23:06,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf5ea99ed/025f51ebffc84ba9816e143047ef7dcd/FLAG496b68ba8 [2021-08-25 19:23:06,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf5ea99ed/025f51ebffc84ba9816e143047ef7dcd [2021-08-25 19:23:06,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 19:23:06,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 19:23:06,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 19:23:06,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 19:23:06,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 19:23:06,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:23:06" (1/1) ... [2021-08-25 19:23:06,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78404782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:23:06, skipping insertion in model container [2021-08-25 19:23:06,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:23:06" (1/1) ... [2021-08-25 19:23:06,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 19:23:06,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 19:23:06,804 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncompf.c[589,602] [2021-08-25 19:23:06,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 19:23:06,827 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 19:23:06,859 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncompf.c[589,602] [2021-08-25 19:23:06,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 19:23:06,904 INFO L208 MainTranslator]: Completed translation [2021-08-25 19:23:06,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:23:06 WrapperNode [2021-08-25 19:23:06,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 19:23:06,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 19:23:06,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 19:23:06,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 19:23:06,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:23:06" (1/1) ... [2021-08-25 19:23:06,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:23:06" (1/1) ... [2021-08-25 19:23:06,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 19:23:06,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 19:23:06,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 19:23:06,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 19:23:06,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:23:06" (1/1) ... [2021-08-25 19:23:06,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:23:06" (1/1) ... [2021-08-25 19:23:06,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:23:06" (1/1) ... [2021-08-25 19:23:06,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:23:06" (1/1) ... [2021-08-25 19:23:06,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:23:06" (1/1) ... [2021-08-25 19:23:06,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:23:06" (1/1) ... [2021-08-25 19:23:06,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:23:06" (1/1) ... [2021-08-25 19:23:06,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 19:23:06,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 19:23:06,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 19:23:06,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 19:23:06,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:23:06" (1/1) ... [2021-08-25 19:23:07,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 19:23:07,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 19:23:07,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-25 19:23:07,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-25 19:23:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 19:23:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 19:23:07,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-25 19:23:07,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-25 19:23:07,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 19:23:07,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 19:23:07,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-25 19:23:07,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 19:23:07,358 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-25 19:23:07,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:23:07 BoogieIcfgContainer [2021-08-25 19:23:07,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 19:23:07,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 19:23:07,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 19:23:07,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 19:23:07,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:23:06" (1/3) ... [2021-08-25 19:23:07,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b555343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:23:07, skipping insertion in model container [2021-08-25 19:23:07,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:23:06" (2/3) ... [2021-08-25 19:23:07,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b555343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:23:07, skipping insertion in model container [2021-08-25 19:23:07,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:23:07" (3/3) ... [2021-08-25 19:23:07,366 INFO L111 eAbstractionObserver]: Analyzing ICFG ncompf.c [2021-08-25 19:23:07,370 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 19:23:07,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 19:23:07,406 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 19:23:07,411 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-25 19:23:07,412 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 19:23:07,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 19:23:07,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-25 19:23:07,428 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 19:23:07,429 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 19:23:07,429 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 19:23:07,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 19:23:07,434 INFO L82 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2021-08-25 19:23:07,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 19:23:07,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063108228] [2021-08-25 19:23:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 19:23:07,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 19:23:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 19:23:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 19:23:07,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 19:23:07,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063108228] [2021-08-25 19:23:07,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063108228] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 19:23:07,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 19:23:07,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-25 19:23:07,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943642381] [2021-08-25 19:23:07,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 19:23:07,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 19:23:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 19:23:07,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 19:23:07,652 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 19:23:07,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 19:23:07,662 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2021-08-25 19:23:07,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 19:23:07,663 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-25 19:23:07,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 19:23:07,669 INFO L225 Difference]: With dead ends: 44 [2021-08-25 19:23:07,669 INFO L226 Difference]: Without dead ends: 20 [2021-08-25 19:23:07,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 19:23:07,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-25 19:23:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-08-25 19:23:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 19:23:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-08-25 19:23:07,693 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2021-08-25 19:23:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 19:23:07,694 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-08-25 19:23:07,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 19:23:07,694 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-08-25 19:23:07,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-25 19:23:07,695 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 19:23:07,695 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 19:23:07,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 19:23:07,696 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 19:23:07,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 19:23:07,696 INFO L82 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2021-08-25 19:23:07,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 19:23:07,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292856789] [2021-08-25 19:23:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 19:23:07,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 19:23:07,723 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-25 19:23:07,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128046672] [2021-08-25 19:23:07,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 19:23:07,724 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 19:23:07,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 19:23:07,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 19:23:07,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-25 19:23:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 19:23:07,833 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 19:23:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 19:23:07,891 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-25 19:23:07,891 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 19:23:07,892 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 19:23:07,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-25 19:23:08,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 19:23:08,115 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 19:23:08,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 07:23:08 BoogieIcfgContainer [2021-08-25 19:23:08,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 19:23:08,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 19:23:08,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 19:23:08,138 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 19:23:08,138 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:23:07" (3/4) ... [2021-08-25 19:23:08,140 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-25 19:23:08,180 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 19:23:08,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 19:23:08,182 INFO L168 Benchmark]: Toolchain (without parser) took 1512.93 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 43.6 MB in the beginning and 47.0 MB in the end (delta: -3.4 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2021-08-25 19:23:08,182 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 62.9 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 19:23:08,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.27 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 45.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-25 19:23:08,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.64 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 44.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 19:23:08,184 INFO L168 Benchmark]: Boogie Preprocessor took 42.05 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 42.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 19:23:08,184 INFO L168 Benchmark]: RCFGBuilder took 362.27 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 42.9 MB in the beginning and 60.6 MB in the end (delta: -17.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-08-25 19:23:08,190 INFO L168 Benchmark]: TraceAbstraction took 775.70 ms. Allocated memory is still 79.7 MB. Free memory was 60.0 MB in the beginning and 49.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-08-25 19:23:08,193 INFO L168 Benchmark]: Witness Printer took 42.66 ms. Allocated memory is still 79.7 MB. Free memory was 49.4 MB in the beginning and 47.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 19:23:08,195 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 62.9 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 238.27 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 45.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.64 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 44.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.05 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 42.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 362.27 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 42.9 MB in the beginning and 60.6 MB in the end (delta: -17.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 775.70 ms. Allocated memory is still 79.7 MB. Free memory was 60.0 MB in the beginning and 49.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Witness Printer took 42.66 ms. Allocated memory is still 79.7 MB. Free memory was 49.4 MB in the beginning and 47.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_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 *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L30] long long *c = malloc(sizeof(long long)*N); [L32] a[0] = 6 [L33] b[0] = 1 [L34] c[0] = 0 [L35] i=1 VAL [N=1] [L35] COND FALSE !(i