./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-examples/relax-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-examples/relax-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fcae0c4d0ca1fc30eac1578cd8b45001717e96b8c9c5f68d5df56e6c4fcd72c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:04:19,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:04:19,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:04:19,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:04:19,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:04:19,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:04:19,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:04:19,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:04:19,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:04:19,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:04:19,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:04:19,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:04:19,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:04:19,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:04:19,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:04:19,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:04:19,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:04:19,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:04:19,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:04:19,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:04:19,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:04:19,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:04:19,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:04:19,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:04:19,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:04:19,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:04:19,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:04:19,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:04:19,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:04:19,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:04:19,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:04:19,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:04:19,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:04:19,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:04:19,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:04:19,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:04:19,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:04:19,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:04:19,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:04:19,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:04:19,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:04:19,231 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:04:19,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:04:19,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:04:19,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:04:19,293 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:04:19,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:04:19,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:04:19,301 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:04:19,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:04:19,302 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:04:19,302 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:04:19,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:04:19,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:04:19,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:04:19,304 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:04:19,304 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:04:19,304 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:04:19,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:04:19,305 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:04:19,305 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:04:19,305 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:04:19,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:04:19,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:04:19,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:04:19,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:04:19,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:04:19,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:04:19,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:04:19,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:04:19,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:04:19,309 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fcae0c4d0ca1fc30eac1578cd8b45001717e96b8c9c5f68d5df56e6c4fcd72c [2021-10-28 23:04:19,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:04:19,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:04:19,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:04:19,665 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:04:19,666 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:04:19,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-examples/relax-1.i [2021-10-28 23:04:19,736 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/data/75119cc3a/656f9c409b59445e91f4e6e894e8a582/FLAG430c7b126 [2021-10-28 23:04:20,302 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:04:20,303 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/sv-benchmarks/c/array-examples/relax-1.i [2021-10-28 23:04:20,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/data/75119cc3a/656f9c409b59445e91f4e6e894e8a582/FLAG430c7b126 [2021-10-28 23:04:20,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/data/75119cc3a/656f9c409b59445e91f4e6e894e8a582 [2021-10-28 23:04:20,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:04:20,580 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:04:20,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:04:20,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:04:20,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:04:20,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:04:20" (1/1) ... [2021-10-28 23:04:20,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56649bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:20, skipping insertion in model container [2021-10-28 23:04:20,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:04:20" (1/1) ... [2021-10-28 23:04:20,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:04:20,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:04:20,862 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/sv-benchmarks/c/array-examples/relax-1.i[983,996] [2021-10-28 23:04:21,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:04:21,089 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:04:21,107 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/sv-benchmarks/c/array-examples/relax-1.i[983,996] [2021-10-28 23:04:21,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:04:21,214 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:04:21,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:21 WrapperNode [2021-10-28 23:04:21,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:04:21,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:04:21,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:04:21,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:04:21,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:21" (1/1) ... [2021-10-28 23:04:21,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:21" (1/1) ... [2021-10-28 23:04:21,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:21" (1/1) ... [2021-10-28 23:04:21,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:21" (1/1) ... [2021-10-28 23:04:21,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:21" (1/1) ... [2021-10-28 23:04:21,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:21" (1/1) ... [2021-10-28 23:04:21,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:21" (1/1) ... [2021-10-28 23:04:21,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:04:21,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:04:21,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:04:21,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:04:21,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:21" (1/1) ... [2021-10-28 23:04:21,352 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:04:21,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:04:21,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:04:21,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:04:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:04:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:04:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-10-28 23:04:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:04:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-10-28 23:04:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:04:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:04:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure is_relaxed_prefix [2021-10-28 23:04:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:04:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:04:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-10-28 23:04:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2021-10-28 23:04:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:04:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:04:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:04:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:04:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:04:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:04:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-10-28 23:04:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:04:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:04:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:04:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:04:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:04:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:04:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:04:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:04:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:04:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:04:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:04:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:04:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:04:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:04:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:04:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:04:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:04:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:04:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:04:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:04:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:04:21,448 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:04:21,448 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:04:21,448 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:04:21,448 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:04:21,448 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:04:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:04:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:04:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:04:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:04:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:04:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:04:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:04:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:04:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:04:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:04:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:04:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:04:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:04:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:04:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:04:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:04:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:04:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:04:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:04:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:04:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:04:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:04:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:04:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:04:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:04:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:04:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:04:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:04:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:04:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:04:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 23:04:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:04:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:04:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:04:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:04:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:04:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:04:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:04:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:04:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:04:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:04:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:04:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:04:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:04:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:04:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:04:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:04:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:04:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:04:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:04:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:04:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:04:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:04:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:04:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:04:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:04:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:04:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:04:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:04:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:04:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:04:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:04:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:04:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:04:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:04:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:04:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:04:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:04:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:04:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:04:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:04:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:04:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:04:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:04:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:04:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure is_relaxed_prefix [2021-10-28 23:04:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:04:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:04:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:04:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:04:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:04:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:04:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:04:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:04:22,148 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:04:22,155 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-28 23:04:22,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:04:22 BoogieIcfgContainer [2021-10-28 23:04:22,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:04:22,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:04:22,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:04:22,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:04:22,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:04:20" (1/3) ... [2021-10-28 23:04:22,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592fa84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:04:22, skipping insertion in model container [2021-10-28 23:04:22,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:04:21" (2/3) ... [2021-10-28 23:04:22,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592fa84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:04:22, skipping insertion in model container [2021-10-28 23:04:22,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:04:22" (3/3) ... [2021-10-28 23:04:22,178 INFO L111 eAbstractionObserver]: Analyzing ICFG relax-1.i [2021-10-28 23:04:22,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:04:22,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2021-10-28 23:04:22,244 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:04:22,251 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-10-28 23:04:22,251 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-10-28 23:04:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 57 states have (on average 1.912280701754386) internal successors, (109), 90 states have internal predecessors, (109), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 23:04:22,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:04:22,304 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:04:22,305 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:04:22,305 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting is_relaxed_prefixErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, is_relaxed_prefixErr0REQUIRES_VIOLATION, is_relaxed_prefixErr1REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 23:04:22,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:04:22,311 INFO L85 PathProgramCache]: Analyzing trace with hash -3143168, now seen corresponding path program 1 times [2021-10-28 23:04:22,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:04:22,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645138054] [2021-10-28 23:04:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:04:22,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:04:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:04:22,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:04:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:04:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:04:22,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:04:22,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645138054] [2021-10-28 23:04:22,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645138054] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:04:22,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:04:22,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:04:22,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375345084] [2021-10-28 23:04:22,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:04:22,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:04:22,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:04:22,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:04:22,697 INFO L87 Difference]: Start difference. First operand has 103 states, 57 states have (on average 1.912280701754386) internal successors, (109), 90 states have internal predecessors, (109), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:04:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:04:23,074 INFO L93 Difference]: Finished difference Result 96 states and 113 transitions. [2021-10-28 23:04:23,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:04:23,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:04:23,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:04:23,087 INFO L225 Difference]: With dead ends: 96 [2021-10-28 23:04:23,087 INFO L226 Difference]: Without dead ends: 93 [2021-10-28 23:04:23,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:04:23,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-28 23:04:23,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-10-28 23:04:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 81 states have internal predecessors, (95), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 23:04:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2021-10-28 23:04:23,134 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 11 [2021-10-28 23:04:23,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:04:23,135 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2021-10-28 23:04:23,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:04:23,135 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2021-10-28 23:04:23,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:04:23,136 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:04:23,136 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:04:23,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:04:23,137 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting is_relaxed_prefixErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, is_relaxed_prefixErr0REQUIRES_VIOLATION, is_relaxed_prefixErr1REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 23:04:23,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:04:23,138 INFO L85 PathProgramCache]: Analyzing trace with hash -3143167, now seen corresponding path program 1 times [2021-10-28 23:04:23,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:04:23,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862753999] [2021-10-28 23:04:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:04:23,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:04:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:04:23,200 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:04:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:04:23,325 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:04:23,327 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:04:23,330 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location is_relaxed_prefixErr1REQUIRES_VIOLATION [2021-10-28 23:04:23,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:04:23,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location is_relaxed_prefixErr0REQUIRES_VIOLATION [2021-10-28 23:04:23,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location is_relaxed_prefixErr2REQUIRES_VIOLATION [2021-10-28 23:04:23,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location is_relaxed_prefixErr3REQUIRES_VIOLATION [2021-10-28 23:04:23,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:04:23,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:04:23,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:04:23,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:04:23,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:04:23,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:04:23,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:04:23,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:04:23,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:04:23,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:04:23,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:04:23,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:04:23,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:04:23,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:04:23,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:04:23,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:04:23,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:04:23,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:04:23,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:04:23,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:04:23,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:04:23,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:04:23,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:04:23,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:04:23,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:04:23,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:04:23,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:04:23,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:04:23,345 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:04:23,349 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:04:23,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:04:23 BoogieIcfgContainer [2021-10-28 23:04:23,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:04:23,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:04:23,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:04:23,392 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:04:23,392 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:04:22" (3/4) ... [2021-10-28 23:04:23,394 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:04:23,438 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e8b3f5-36cb-4ed5-a4fb-070d89dd2991/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:04:23,439 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:04:23,440 INFO L168 Benchmark]: Toolchain (without parser) took 2859.11 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 58.1 MB in the beginning and 53.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:04:23,441 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 75.4 MB in the end (delta: 68.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:04:23,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.23 ms. Allocated memory is still 100.7 MB. Free memory was 57.9 MB in the beginning and 66.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:04:23,442 INFO L168 Benchmark]: Boogie Preprocessor took 112.23 ms. Allocated memory is still 100.7 MB. Free memory was 66.4 MB in the beginning and 63.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:04:23,443 INFO L168 Benchmark]: RCFGBuilder took 829.92 ms. Allocated memory is still 100.7 MB. Free memory was 63.4 MB in the beginning and 38.8 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:04:23,444 INFO L168 Benchmark]: TraceAbstraction took 1217.62 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 38.5 MB in the beginning and 55.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:04:23,444 INFO L168 Benchmark]: Witness Printer took 47.28 ms. Allocated memory is still 127.9 MB. Free memory was 55.9 MB in the beginning and 53.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:04:23,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 75.4 MB in the end (delta: 68.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 623.23 ms. Allocated memory is still 100.7 MB. Free memory was 57.9 MB in the beginning and 66.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 112.23 ms. Allocated memory is still 100.7 MB. Free memory was 66.4 MB in the beginning and 63.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 829.92 ms. Allocated memory is still 100.7 MB. Free memory was 63.4 MB in the beginning and 38.8 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1217.62 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 38.5 MB in the beginning and 55.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Witness Printer took 47.28 ms. Allocated memory is still 127.9 MB. Free memory was 55.9 MB in the beginning and 53.8 MB in the end (delta: 2.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 584]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L599] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L599] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L600] int *pat=malloc(sizeof(int)*pat_len); [L601] int *a=malloc(sizeof(int)*a_len); [L602] CALL is_relaxed_prefix(pat, pat_len, a, a_len) VAL [\old(a_length)=536870912, \old(pat_length)=536870913, a={-1:0}, pat={-2:0}] [L579] COND FALSE !(pat_length>a_length+1) [L581] int shift=0; [L582] int i=0; VAL [\old(a_length)=536870912, \old(pat_length)=536870913, a={-1:0}, a={-1:0}, a_length=536870912, i=0, pat={-2:0}, pat={-2:0}, pat_length=536870913, shift=0] [L582] COND TRUE i