./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/condnf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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/condnf.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 8f200ba5f761b85a7e085e45c2d123795022765b .................................................................................................................................................................................................................................................................................................................................................................... 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-wip.dd.multireach-323-8d31f38 [2021-07-04 16:42:43,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-04 16:42:43,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-04 16:42:44,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-04 16:42:44,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-04 16:42:44,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-04 16:42:44,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-04 16:42:44,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-04 16:42:44,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-04 16:42:44,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-04 16:42:44,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-04 16:42:44,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-04 16:42:44,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-04 16:42:44,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-04 16:42:44,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-04 16:42:44,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-04 16:42:44,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-04 16:42:44,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-04 16:42:44,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-04 16:42:44,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-04 16:42:44,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-04 16:42:44,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-04 16:42:44,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-04 16:42:44,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-04 16:42:44,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-04 16:42:44,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-04 16:42:44,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-04 16:42:44,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-04 16:42:44,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-04 16:42:44,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-04 16:42:44,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-04 16:42:44,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-04 16:42:44,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-04 16:42:44,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-04 16:42:44,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-04 16:42:44,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-04 16:42:44,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-04 16:42:44,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-04 16:42:44,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-04 16:42:44,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-04 16:42:44,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-04 16:42:44,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-04 16:42:44,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-04 16:42:44,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-04 16:42:44,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-04 16:42:44,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-04 16:42:44,099 INFO L138 SettingsManager]: * Use SBE=true [2021-07-04 16:42:44,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-04 16:42:44,100 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-04 16:42:44,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-04 16:42:44,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-04 16:42:44,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-04 16:42:44,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-04 16:42:44,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-04 16:42:44,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-04 16:42:44,103 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-04 16:42:44,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-04 16:42:44,103 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-04 16:42:44,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-04 16:42:44,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-04 16:42:44,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-04 16:42:44,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-04 16:42:44,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 16:42:44,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-04 16:42:44,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-04 16:42:44,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-04 16:42:44,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-04 16:42:44,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-04 16:42:44,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-04 16:42:44,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-04 16:42:44,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f200ba5f761b85a7e085e45c2d123795022765b [2021-07-04 16:42:44,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-04 16:42:44,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-04 16:42:44,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-04 16:42:44,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-04 16:42:44,441 INFO L275 PluginConnector]: CDTParser initialized [2021-07-04 16:42:44,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condnf.c [2021-07-04 16:42:44,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b298c55/e5629217fa3e4809be2d68974df0a0ca/FLAGc07860361 [2021-07-04 16:42:44,879 INFO L306 CDTParser]: Found 1 translation units. [2021-07-04 16:42:44,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condnf.c [2021-07-04 16:42:44,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b298c55/e5629217fa3e4809be2d68974df0a0ca/FLAGc07860361 [2021-07-04 16:42:45,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7b298c55/e5629217fa3e4809be2d68974df0a0ca [2021-07-04 16:42:45,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-04 16:42:45,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-04 16:42:45,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-04 16:42:45,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-04 16:42:45,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-04 16:42:45,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 04:42:45" (1/1) ... [2021-07-04 16:42:45,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ef290e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:42:45, skipping insertion in model container [2021-07-04 16:42:45,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 04:42:45" (1/1) ... [2021-07-04 16:42:45,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-04 16:42:45,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-04 16:42:45,432 WARN L224 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/condnf.c[589,602] [2021-07-04 16:42:45,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 16:42:45,451 INFO L203 MainTranslator]: Completed pre-run [2021-07-04 16:42:45,464 WARN L224 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/condnf.c[589,602] [2021-07-04 16:42:45,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 16:42:45,492 INFO L208 MainTranslator]: Completed translation [2021-07-04 16:42:45,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:42:45 WrapperNode [2021-07-04 16:42:45,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-04 16:42:45,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-04 16:42:45,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-04 16:42:45,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-04 16:42:45,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:42:45" (1/1) ... [2021-07-04 16:42:45,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:42:45" (1/1) ... [2021-07-04 16:42:45,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-04 16:42:45,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-04 16:42:45,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-04 16:42:45,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-04 16:42:45,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:42:45" (1/1) ... [2021-07-04 16:42:45,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:42:45" (1/1) ... [2021-07-04 16:42:45,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:42:45" (1/1) ... [2021-07-04 16:42:45,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:42:45" (1/1) ... [2021-07-04 16:42:45,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:42:45" (1/1) ... [2021-07-04 16:42:45,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:42:45" (1/1) ... [2021-07-04 16:42:45,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:42:45" (1/1) ... [2021-07-04 16:42:45,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-04 16:42:45,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-04 16:42:45,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-04 16:42:45,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-04 16:42:45,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:42:45" (1/1) ... [2021-07-04 16:42:45,582 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 16:42:45,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-04 16:42:45,609 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) [2021-07-04 16:42:45,611 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 [2021-07-04 16:42:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-04 16:42:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-04 16:42:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-04 16:42:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-07-04 16:42:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-04 16:42:45,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-04 16:42:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-04 16:42:45,912 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-04 16:42:45,912 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-07-04 16:42:45,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 04:42:45 BoogieIcfgContainer [2021-07-04 16:42:45,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-04 16:42:45,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-04 16:42:45,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-04 16:42:45,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-04 16:42:45,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.07 04:42:45" (1/3) ... [2021-07-04 16:42:45,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ada61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 04:42:45, skipping insertion in model container [2021-07-04 16:42:45,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 04:42:45" (2/3) ... [2021-07-04 16:42:45,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ada61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 04:42:45, skipping insertion in model container [2021-07-04 16:42:45,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 04:42:45" (3/3) ... [2021-07-04 16:42:45,920 INFO L111 eAbstractionObserver]: Analyzing ICFG condnf.c [2021-07-04 16:42:45,925 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-04 16:42:45,926 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-04 16:42:45,961 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-04 16:42:45,966 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-04 16:42:45,966 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-04 16:42:45,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 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) [2021-07-04 16:42:45,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-04 16:42:45,980 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 16:42:45,981 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 16:42:45,981 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 16:42:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 16:42:45,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1828392228, now seen corresponding path program 1 times [2021-07-04 16:42:45,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 16:42:46,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781227427] [2021-07-04 16:42:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 16:42:46,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 16:42:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 16:42:46,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 16:42:46,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 16:42:46,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 16:42:46,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 16:42:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 16:42:46,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 16:42:46,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781227427] [2021-07-04 16:42:46,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781227427] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 16:42:46,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 16:42:46,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-04 16:42:46,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041389777] [2021-07-04 16:42:46,212 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-04 16:42:46,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 16:42:46,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-04 16:42:46,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-04 16:42:46,230 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-07-04 16:42:46,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 16:42:46,244 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2021-07-04 16:42:46,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-04 16:42:46,245 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-07-04 16:42:46,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 16:42:46,254 INFO L225 Difference]: With dead ends: 40 [2021-07-04 16:42:46,255 INFO L226 Difference]: Without dead ends: 18 [2021-07-04 16:42:46,257 INFO L795 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 [2021-07-04 16:42:46,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-07-04 16:42:46,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-07-04 16:42:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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) [2021-07-04 16:42:46,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-07-04 16:42:46,295 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2021-07-04 16:42:46,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 16:42:46,296 INFO L442 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-07-04 16:42:46,296 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-07-04 16:42:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-07-04 16:42:46,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-04 16:42:46,297 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 16:42:46,297 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 16:42:46,298 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-04 16:42:46,298 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 16:42:46,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 16:42:46,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1148333858, now seen corresponding path program 1 times [2021-07-04 16:42:46,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 16:42:46,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097729107] [2021-07-04 16:42:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 16:42:46,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 16:42:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 16:42:46,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 16:42:46,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 16:42:46,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 16:42:46,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 16:42:46,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 16:42:46,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-04 16:42:46,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 16:42:46,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 16:42:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 16:42:46,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 16:42:46,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097729107] [2021-07-04 16:42:46,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097729107] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 16:42:46,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 16:42:46,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-04 16:42:46,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103660121] [2021-07-04 16:42:46,418 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-04 16:42:46,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 16:42:46,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-04 16:42:46,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-04 16:42:46,420 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-07-04 16:42:46,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 16:42:46,489 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2021-07-04 16:42:46,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-04 16:42:46,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-07-04 16:42:46,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 16:42:46,491 INFO L225 Difference]: With dead ends: 40 [2021-07-04 16:42:46,491 INFO L226 Difference]: Without dead ends: 29 [2021-07-04 16:42:46,492 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-04 16:42:46,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-07-04 16:42:46,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2021-07-04 16:42:46,501 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) [2021-07-04 16:42:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-07-04 16:42:46,502 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2021-07-04 16:42:46,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 16:42:46,503 INFO L442 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-07-04 16:42:46,503 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-07-04 16:42:46,503 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-07-04 16:42:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-07-04 16:42:46,504 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 16:42:46,505 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 16:42:46,506 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-04 16:42:46,508 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 16:42:46,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 16:42:46,517 INFO L82 PathProgramCache]: Analyzing trace with hash -2142875084, now seen corresponding path program 1 times [2021-07-04 16:42:46,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 16:42:46,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265430526] [2021-07-04 16:42:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 16:42:46,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 16:42:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 16:42:46,564 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 16:42:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 16:42:46,605 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 16:42:46,623 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-04 16:42:46,623 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-04 16:42:46,626 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-04 16:42:46,626 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-04 16:42:46,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.07 04:42:46 BoogieIcfgContainer [2021-07-04 16:42:46,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-04 16:42:46,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-04 16:42:46,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-04 16:42:46,654 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-04 16:42:46,654 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 04:42:45" (3/4) ... [2021-07-04 16:42:46,656 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-04 16:42:46,687 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-04 16:42:46,687 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-04 16:42:46,688 INFO L168 Benchmark]: Toolchain (without parser) took 1399.68 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.7 MB in the beginning and 36.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2021-07-04 16:42:46,689 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 31.7 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 16:42:46,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.92 ms. Allocated memory is still 50.3 MB. Free memory was 27.5 MB in the beginning and 29.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-07-04 16:42:46,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.65 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 44.5 MB in the end (delta: -15.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 16:42:46,690 INFO L168 Benchmark]: Boogie Preprocessor took 18.93 ms. Allocated memory is still 60.8 MB. Free memory was 44.5 MB in the beginning and 43.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 16:42:46,690 INFO L168 Benchmark]: RCFGBuilder took 338.39 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 42.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-07-04 16:42:46,691 INFO L168 Benchmark]: TraceAbstraction took 738.34 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 38.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-07-04 16:42:46,691 INFO L168 Benchmark]: Witness Printer took 33.76 ms. Allocated memory is still 60.8 MB. Free memory was 38.8 MB in the beginning and 36.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 16:42:46,693 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 31.7 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 203.92 ms. Allocated memory is still 50.3 MB. Free memory was 27.5 MB in the beginning and 29.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.65 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 44.5 MB in the end (delta: -15.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.93 ms. Allocated memory is still 60.8 MB. Free memory was 44.5 MB in the beginning and 43.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 338.39 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 42.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 738.34 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 38.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * Witness Printer took 33.76 ms. Allocated memory is still 60.8 MB. Free memory was 38.8 MB in the beginning and 36.4 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] int *a = malloc(sizeof(int)*N); [L30] i=0 VAL [N=1] [L30] COND TRUE i N [L38] EXPR a[i] [L38] a[i] = a[i] [L35] i++ VAL [N=1] [L35] COND FALSE !(i