./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/brs2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/brs2f.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 cd8964853d628053ec141f0834bb54931510ac76 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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.seqcomp-5fbdf5b [2021-08-29 01:43:30,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 01:43:30,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 01:43:30,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 01:43:30,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 01:43:30,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 01:43:30,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 01:43:30,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 01:43:30,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 01:43:30,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 01:43:30,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 01:43:30,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 01:43:30,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 01:43:30,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 01:43:30,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 01:43:30,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 01:43:30,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 01:43:30,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 01:43:30,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 01:43:30,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 01:43:30,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 01:43:30,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 01:43:30,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 01:43:30,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 01:43:30,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 01:43:30,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 01:43:30,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 01:43:30,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 01:43:30,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 01:43:30,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 01:43:30,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 01:43:30,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 01:43:30,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 01:43:30,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 01:43:30,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 01:43:30,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 01:43:30,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 01:43:30,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 01:43:30,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 01:43:30,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 01:43:30,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 01:43:30,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 01:43:30,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 01:43:30,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 01:43:30,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 01:43:30,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 01:43:30,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 01:43:30,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 01:43:30,296 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 01:43:30,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 01:43:30,296 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 01:43:30,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 01:43:30,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 01:43:30,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 01:43:30,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 01:43:30,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 01:43:30,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 01:43:30,297 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 01:43:30,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 01:43:30,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 01:43:30,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 01:43:30,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 01:43:30,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 01:43:30,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 01:43:30,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 01:43:30,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 01:43:30,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 01:43:30,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 01:43:30,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 01:43:30,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 01:43:30,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 01:43:30,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 01:43:30,299 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd8964853d628053ec141f0834bb54931510ac76 [2021-08-29 01:43:30,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 01:43:30,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 01:43:30,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 01:43:30,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 01:43:30,614 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 01:43:30,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs2f.c [2021-08-29 01:43:30,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faea06972/c6d508879b294e36b0b1ed71280502b8/FLAG319b929ec [2021-08-29 01:43:31,019 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 01:43:31,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2f.c [2021-08-29 01:43:31,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faea06972/c6d508879b294e36b0b1ed71280502b8/FLAG319b929ec [2021-08-29 01:43:31,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faea06972/c6d508879b294e36b0b1ed71280502b8 [2021-08-29 01:43:31,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 01:43:31,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 01:43:31,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 01:43:31,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 01:43:31,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 01:43:31,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:43:31" (1/1) ... [2021-08-29 01:43:31,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282f10b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:43:31, skipping insertion in model container [2021-08-29 01:43:31,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:43:31" (1/1) ... [2021-08-29 01:43:31,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 01:43:31,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 01:43:31,163 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/brs2f.c[588,601] [2021-08-29 01:43:31,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 01:43:31,189 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 01:43:31,235 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/brs2f.c[588,601] [2021-08-29 01:43:31,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 01:43:31,257 INFO L208 MainTranslator]: Completed translation [2021-08-29 01:43:31,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:43:31 WrapperNode [2021-08-29 01:43:31,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 01:43:31,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 01:43:31,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 01:43:31,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 01:43:31,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:43:31" (1/1) ... [2021-08-29 01:43:31,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:43:31" (1/1) ... [2021-08-29 01:43:31,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 01:43:31,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 01:43:31,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 01:43:31,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 01:43:31,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:43:31" (1/1) ... [2021-08-29 01:43:31,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:43:31" (1/1) ... [2021-08-29 01:43:31,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:43:31" (1/1) ... [2021-08-29 01:43:31,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:43:31" (1/1) ... [2021-08-29 01:43:31,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:43:31" (1/1) ... [2021-08-29 01:43:31,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:43:31" (1/1) ... [2021-08-29 01:43:31,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:43:31" (1/1) ... [2021-08-29 01:43:31,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 01:43:31,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 01:43:31,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 01:43:31,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 01:43:31,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:43:31" (1/1) ... [2021-08-29 01:43:31,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 01:43:31,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 01:43:31,352 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) [2021-08-29 01:43:31,378 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 [2021-08-29 01:43:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 01:43:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 01:43:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 01:43:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 01:43:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 01:43:31,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 01:43:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 01:43:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 01:43:31,569 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 01:43:31,569 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-29 01:43:31,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:43:31 BoogieIcfgContainer [2021-08-29 01:43:31,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 01:43:31,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 01:43:31,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 01:43:31,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 01:43:31,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 01:43:31" (1/3) ... [2021-08-29 01:43:31,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e092f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:43:31, skipping insertion in model container [2021-08-29 01:43:31,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:43:31" (2/3) ... [2021-08-29 01:43:31,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e092f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:43:31, skipping insertion in model container [2021-08-29 01:43:31,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:43:31" (3/3) ... [2021-08-29 01:43:31,579 INFO L111 eAbstractionObserver]: Analyzing ICFG brs2f.c [2021-08-29 01:43:31,584 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 01:43:31,584 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 01:43:31,640 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 01:43:31,647 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 [2021-08-29 01:43:31,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 01:43:31,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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) [2021-08-29 01:43:31,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 01:43:31,669 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 01:43:31,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 01:43:31,670 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 01:43:31,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 01:43:31,678 INFO L82 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2021-08-29 01:43:31,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 01:43:31,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096758454] [2021-08-29 01:43:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 01:43:31,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 01:43:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 01:43:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 01:43:31,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 01:43:31,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096758454] [2021-08-29 01:43:31,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096758454] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 01:43:31,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 01:43:31,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 01:43:31,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259469467] [2021-08-29 01:43:31,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 01:43:31,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 01:43:31,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 01:43:31,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 01:43:31,868 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-08-29 01:43:31,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 01:43:31,930 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2021-08-29 01:43:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 01:43:31,933 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-08-29 01:43:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 01:43:31,939 INFO L225 Difference]: With dead ends: 36 [2021-08-29 01:43:31,939 INFO L226 Difference]: Without dead ends: 16 [2021-08-29 01:43:31,942 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 01:43:31,945 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.66ms IncrementalHoareTripleChecker+Time [2021-08-29 01:43:31,947 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.27ms Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 49.66ms Time] [2021-08-29 01:43:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-29 01:43:31,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-29 01:43:31,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2021-08-29 01:43:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-08-29 01:43:31,972 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2021-08-29 01:43:31,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 01:43:31,973 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-08-29 01:43:31,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-08-29 01:43:31,973 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-08-29 01:43:31,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 01:43:31,974 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 01:43:31,974 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 01:43:31,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 01:43:31,976 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 01:43:31,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 01:43:31,977 INFO L82 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2021-08-29 01:43:31,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 01:43:31,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031029980] [2021-08-29 01:43:31,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 01:43:31,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 01:43:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 01:43:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 01:43:32,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 01:43:32,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031029980] [2021-08-29 01:43:32,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031029980] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 01:43:32,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 01:43:32,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 01:43:32,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787693768] [2021-08-29 01:43:32,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 01:43:32,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 01:43:32,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 01:43:32,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 01:43:32,070 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-29 01:43:32,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 01:43:32,118 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-08-29 01:43:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 01:43:32,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-08-29 01:43:32,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 01:43:32,120 INFO L225 Difference]: With dead ends: 33 [2021-08-29 01:43:32,120 INFO L226 Difference]: Without dead ends: 22 [2021-08-29 01:43:32,123 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.27ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 01:43:32,125 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.69ms IncrementalHoareTripleChecker+Time [2021-08-29 01:43:32,125 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 44 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 37.69ms Time] [2021-08-29 01:43:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-29 01:43:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-08-29 01:43:32,133 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) [2021-08-29 01:43:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-08-29 01:43:32,134 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2021-08-29 01:43:32,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 01:43:32,135 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-08-29 01:43:32,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-29 01:43:32,136 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-08-29 01:43:32,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 01:43:32,136 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 01:43:32,136 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 01:43:32,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 01:43:32,137 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 01:43:32,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 01:43:32,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2021-08-29 01:43:32,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 01:43:32,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765167409] [2021-08-29 01:43:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 01:43:32,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 01:43:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 01:43:32,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 01:43:32,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 01:43:32,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765167409] [2021-08-29 01:43:32,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765167409] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 01:43:32,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 01:43:32,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 01:43:32,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964306727] [2021-08-29 01:43:32,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 01:43:32,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 01:43:32,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 01:43:32,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 01:43:32,269 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-08-29 01:43:32,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 01:43:32,320 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-08-29 01:43:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 01:43:32,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-08-29 01:43:32,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 01:43:32,322 INFO L225 Difference]: With dead ends: 27 [2021-08-29 01:43:32,322 INFO L226 Difference]: Without dead ends: 23 [2021-08-29 01:43:32,323 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.98ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 01:43:32,329 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.74ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.42ms IncrementalHoareTripleChecker+Time [2021-08-29 01:43:32,330 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 61 Unknown, 0 Unchecked, 0.74ms Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 40.42ms Time] [2021-08-29 01:43:32,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-29 01:43:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-08-29 01:43:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 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) [2021-08-29 01:43:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-08-29 01:43:32,336 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2021-08-29 01:43:32,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 01:43:32,337 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-08-29 01:43:32,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-08-29 01:43:32,337 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-08-29 01:43:32,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 01:43:32,338 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 01:43:32,339 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 01:43:32,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 01:43:32,339 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 01:43:32,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 01:43:32,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2021-08-29 01:43:32,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 01:43:32,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292755791] [2021-08-29 01:43:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 01:43:32,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 01:43:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 01:43:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 01:43:32,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 01:43:32,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292755791] [2021-08-29 01:43:32,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292755791] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 01:43:32,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245952874] [2021-08-29 01:43:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 01:43:32,403 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 01:43:32,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 01:43:32,405 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) [2021-08-29 01:43:32,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 01:43:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 01:43:32,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-29 01:43:32,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 01:43:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 01:43:32,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 01:43:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 01:43:32,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245952874] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 01:43:32,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 01:43:32,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-08-29 01:43:32,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59452124] [2021-08-29 01:43:32,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-29 01:43:32,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 01:43:32,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-29 01:43:32,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-29 01:43:32,628 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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) [2021-08-29 01:43:32,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 01:43:32,726 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-08-29 01:43:32,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 01:43:32,727 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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 20 [2021-08-29 01:43:32,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 01:43:32,727 INFO L225 Difference]: With dead ends: 43 [2021-08-29 01:43:32,727 INFO L226 Difference]: Without dead ends: 29 [2021-08-29 01:43:32,728 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 56.01ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-08-29 01:43:32,737 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.93ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.00ms IncrementalHoareTripleChecker+Time [2021-08-29 01:43:32,738 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 134 Unknown, 0 Unchecked, 1.93ms Time], IncrementalHoareTripleChecker [15 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 62.00ms Time] [2021-08-29 01:43:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-29 01:43:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-08-29 01:43:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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) [2021-08-29 01:43:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-08-29 01:43:32,744 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2021-08-29 01:43:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 01:43:32,744 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-08-29 01:43:32,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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) [2021-08-29 01:43:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-08-29 01:43:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-29 01:43:32,746 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 01:43:32,746 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 01:43:32,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-29 01:43:32,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 01:43:32,957 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 01:43:32,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 01:43:32,958 INFO L82 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2021-08-29 01:43:32,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 01:43:32,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340812070] [2021-08-29 01:43:32,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 01:43:32,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 01:43:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 01:43:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 01:43:33,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 01:43:33,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340812070] [2021-08-29 01:43:33,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340812070] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 01:43:33,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389554716] [2021-08-29 01:43:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 01:43:33,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 01:43:33,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 01:43:33,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 01:43:33,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 01:43:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 01:43:33,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-29 01:43:33,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 01:43:33,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-08-29 01:43:33,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-29 01:43:33,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-29 01:43:33,636 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-08-29 01:43:33,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 29 [2021-08-29 01:43:33,736 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-29 01:43:33,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 39 [2021-08-29 01:43:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 01:43:33,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 01:43:35,855 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0.offset| Int)) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0.base|) |ULTIMATE.start_main_~#sum~0.offset| 0)) c_ULTIMATE.start_main_~a~0.base) (+ c_ULTIMATE.start_main_~a~0.offset 4 (* c_ULTIMATE.start_main_~i~0 4))) (* 2 c_~N~0))) is different from false [2021-08-29 01:43:36,280 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0.offset| Int)) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0.base|) |ULTIMATE.start_main_~#sum~0.offset| 0)) c_ULTIMATE.start_main_~a~0.base) (+ c_ULTIMATE.start_main_~a~0.offset 4)) (* 2 c_~N~0))) is different from false [2021-08-29 01:43:36,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 86 [2021-08-29 01:43:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-08-29 01:43:36,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389554716] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 01:43:36,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 01:43:36,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 31 [2021-08-29 01:43:36,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313214047] [2021-08-29 01:43:36,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-08-29 01:43:36,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 01:43:36,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-08-29 01:43:36,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=685, Unknown=2, NotChecked=110, Total=930 [2021-08-29 01:43:36,427 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 31 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 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) [2021-08-29 01:43:38,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 01:43:38,643 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2021-08-29 01:43:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-29 01:43:38,644 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 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 23 [2021-08-29 01:43:38,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 01:43:38,644 INFO L225 Difference]: With dead ends: 51 [2021-08-29 01:43:38,644 INFO L226 Difference]: Without dead ends: 31 [2021-08-29 01:43:38,645 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 4768.56ms TimeCoverageRelationStatistics Valid=293, Invalid=1273, Unknown=2, NotChecked=154, Total=1722 [2021-08-29 01:43:38,645 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 149.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 184.88ms IncrementalHoareTripleChecker+Time [2021-08-29 01:43:38,645 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 448 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [77 Valid, 313 Invalid, 0 Unknown, 58 Unchecked, 184.88ms Time] [2021-08-29 01:43:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-29 01:43:38,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-08-29 01:43:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 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) [2021-08-29 01:43:38,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-08-29 01:43:38,648 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 23 [2021-08-29 01:43:38,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 01:43:38,648 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-08-29 01:43:38,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 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) [2021-08-29 01:43:38,648 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-08-29 01:43:38,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-29 01:43:38,649 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 01:43:38,649 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 01:43:38,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 01:43:38,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 01:43:38,861 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 01:43:38,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 01:43:38,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1961352373, now seen corresponding path program 2 times [2021-08-29 01:43:38,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 01:43:38,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105370368] [2021-08-29 01:43:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 01:43:38,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 01:43:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 01:43:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 01:43:38,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 01:43:38,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105370368] [2021-08-29 01:43:38,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105370368] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 01:43:38,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64238285] [2021-08-29 01:43:38,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 01:43:38,913 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 01:43:38,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 01:43:38,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 01:43:38,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 01:43:38,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 01:43:38,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 01:43:38,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-29 01:43:38,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 01:43:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 01:43:39,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 01:43:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 01:43:39,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64238285] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 01:43:39,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 01:43:39,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-08-29 01:43:39,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456698633] [2021-08-29 01:43:39,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-29 01:43:39,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 01:43:39,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-29 01:43:39,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-08-29 01:43:39,138 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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) [2021-08-29 01:43:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 01:43:39,269 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-08-29 01:43:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 01:43:39,269 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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 26 [2021-08-29 01:43:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 01:43:39,270 INFO L225 Difference]: With dead ends: 49 [2021-08-29 01:43:39,270 INFO L226 Difference]: Without dead ends: 34 [2021-08-29 01:43:39,270 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 92.21ms TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-08-29 01:43:39,271 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.97ms IncrementalHoareTripleChecker+Time [2021-08-29 01:43:39,271 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 159 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [21 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 76.97ms Time] [2021-08-29 01:43:39,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-29 01:43:39,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2021-08-29 01:43:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 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) [2021-08-29 01:43:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-08-29 01:43:39,274 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 26 [2021-08-29 01:43:39,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 01:43:39,274 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-08-29 01:43:39,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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) [2021-08-29 01:43:39,274 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-08-29 01:43:39,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-29 01:43:39,274 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 01:43:39,274 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 01:43:39,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 01:43:39,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 01:43:39,488 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 01:43:39,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 01:43:39,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1507669223, now seen corresponding path program 3 times [2021-08-29 01:43:39,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 01:43:39,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585607296] [2021-08-29 01:43:39,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 01:43:39,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 01:43:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 01:43:39,512 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 01:43:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 01:43:39,557 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 01:43:39,557 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 01:43:39,558 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 01:43:39,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 01:43:39,564 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 01:43:39,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 01:43:39 BoogieIcfgContainer [2021-08-29 01:43:39,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 01:43:39,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 01:43:39,605 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 01:43:39,605 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 01:43:39,605 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:43:31" (3/4) ... [2021-08-29 01:43:39,606 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 01:43:39,633 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 01:43:39,634 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 01:43:39,634 INFO L158 Benchmark]: Toolchain (without parser) took 8599.46ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 37.7MB in the beginning and 48.0MB in the end (delta: -10.4MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2021-08-29 01:43:39,634 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 39.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 01:43:39,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.20ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 41.8MB in the end (delta: -4.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 01:43:39,635 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.87ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 40.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 01:43:39,635 INFO L158 Benchmark]: Boogie Preprocessor took 33.69ms. Allocated memory is still 58.7MB. Free memory was 40.2MB in the beginning and 39.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 01:43:39,635 INFO L158 Benchmark]: RCFGBuilder took 242.40ms. Allocated memory is still 58.7MB. Free memory was 39.0MB in the beginning and 29.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 01:43:39,635 INFO L158 Benchmark]: TraceAbstraction took 8031.12ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 29.4MB in the beginning and 50.9MB in the end (delta: -21.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 01:43:39,636 INFO L158 Benchmark]: Witness Printer took 29.19ms. Allocated memory is still 77.6MB. Free memory was 50.9MB in the beginning and 48.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 01:43:39,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 39.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.20ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 41.8MB in the end (delta: -4.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.87ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 40.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.69ms. Allocated memory is still 58.7MB. Free memory was 40.2MB in the beginning and 39.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 242.40ms. Allocated memory is still 58.7MB. Free memory was 39.0MB in the beginning and 29.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8031.12ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 29.4MB in the beginning and 50.9MB in the end (delta: -21.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 29.19ms. Allocated memory is still 77.6MB. Free memory was 50.9MB in the beginning and 48.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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=3] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [N=3] [L31] COND TRUE i