./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-examples/relax-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be --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-e943c26 [2021-10-21 19:20:54,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:20:54,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:20:54,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:20:54,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:20:54,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:20:54,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:20:54,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:20:54,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:20:54,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:20:54,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:20:54,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:20:54,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:20:55,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:20:55,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:20:55,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:20:55,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:20:55,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:20:55,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:20:55,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:20:55,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:20:55,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:20:55,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:20:55,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:20:55,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:20:55,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:20:55,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:20:55,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:20:55,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:20:55,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:20:55,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:20:55,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:20:55,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:20:55,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:20:55,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:20:55,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:20:55,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:20:55,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:20:55,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:20:55,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:20:55,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:20:55,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 19:20:55,125 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:20:55,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:20:55,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:20:55,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:20:55,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:20:55,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:20:55,129 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:20:55,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:20:55,130 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:20:55,130 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:20:55,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:20:55,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:20:55,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:20:55,133 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:20:55,133 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:20:55,133 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:20:55,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:20:55,134 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:20:55,134 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:20:55,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:20:55,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:20:55,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:20:55,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:20:55,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:20:55,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:20:55,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:20:55,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:20:55,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:20:55,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:20:55,139 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_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fcae0c4d0ca1fc30eac1578cd8b45001717e96b8c9c5f68d5df56e6c4fcd72c [2021-10-21 19:20:55,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:20:55,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:20:55,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:20:55,584 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:20:55,585 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:20:55,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/array-examples/relax-1.i [2021-10-21 19:20:55,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/data/f4d7a4502/38eff2a77a9041348b99d8c6cf07edfd/FLAGb4c6d08c0 [2021-10-21 19:20:56,255 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:20:56,256 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/sv-benchmarks/c/array-examples/relax-1.i [2021-10-21 19:20:56,275 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/data/f4d7a4502/38eff2a77a9041348b99d8c6cf07edfd/FLAGb4c6d08c0 [2021-10-21 19:20:56,529 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/data/f4d7a4502/38eff2a77a9041348b99d8c6cf07edfd [2021-10-21 19:20:56,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:20:56,536 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:20:56,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:20:56,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:20:56,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:20:56,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:20:56" (1/1) ... [2021-10-21 19:20:56,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d7e06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:56, skipping insertion in model container [2021-10-21 19:20:56,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:20:56" (1/1) ... [2021-10-21 19:20:56,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:20:56,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:20:56,838 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_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/sv-benchmarks/c/array-examples/relax-1.i[983,996] [2021-10-21 19:20:56,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:20:56,981 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:20:56,994 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_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/sv-benchmarks/c/array-examples/relax-1.i[983,996] [2021-10-21 19:20:57,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:20:57,093 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:20:57,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:57 WrapperNode [2021-10-21 19:20:57,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:20:57,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:20:57,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:20:57,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:20:57,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:57" (1/1) ... [2021-10-21 19:20:57,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:57" (1/1) ... [2021-10-21 19:20:57,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:57" (1/1) ... [2021-10-21 19:20:57,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:57" (1/1) ... [2021-10-21 19:20:57,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:57" (1/1) ... [2021-10-21 19:20:57,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:57" (1/1) ... [2021-10-21 19:20:57,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:57" (1/1) ... [2021-10-21 19:20:57,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:20:57,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:20:57,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:20:57,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:20:57,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:57" (1/1) ... [2021-10-21 19:20:57,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:20:57,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:20:57,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:20:57,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:20:57,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:20:57,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:20:57,357 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-10-21 19:20:57,357 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 19:20:57,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-10-21 19:20:57,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:20:57,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:20:57,359 INFO L138 BoogieDeclarations]: Found implementation of procedure is_relaxed_prefix [2021-10-21 19:20:57,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:20:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:20:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-10-21 19:20:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2021-10-21 19:20:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 19:20:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 19:20:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 19:20:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 19:20:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:20:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 19:20:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-10-21 19:20:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:20:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:20:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:20:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:20:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:20:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:20:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:20:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:20:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:20:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:20:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:20:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:20:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:20:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:20:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:20:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:20:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:20:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:20:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:20:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:20:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:20:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:20:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:20:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:20:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:20:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:20:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:20:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:20:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:20:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:20:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:20:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:20:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:20:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:20:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:20:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:20:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:20:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:20:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:20:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:20:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:20:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:20:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:20:57,376 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:20:57,376 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:20:57,377 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:20:57,377 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:20:57,378 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:20:57,379 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:20:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:20:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:20:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:20:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:20:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:20:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:20:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:20:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-21 19:20:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:20:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:20:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:20:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:20:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:20:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:20:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:20:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:20:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:20:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:20:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:20:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:20:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:20:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:20:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:20:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:20:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:20:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:20:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:20:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:20:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:20:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:20:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:20:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:20:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:20:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:20:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:20:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:20:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:20:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:20:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:20:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:20:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:20:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:20:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:20:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:20:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:20:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:20:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:20:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:20:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:20:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:20:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:20:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:20:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure is_relaxed_prefix [2021-10-21 19:20:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:20:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:20:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:20:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:20:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:20:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:20:57,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:20:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:20:58,409 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:20:58,410 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-21 19:20:58,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:20:58 BoogieIcfgContainer [2021-10-21 19:20:58,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:20:58,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:20:58,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:20:58,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:20:58,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:20:56" (1/3) ... [2021-10-21 19:20:58,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11672f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:20:58, skipping insertion in model container [2021-10-21 19:20:58,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:20:57" (2/3) ... [2021-10-21 19:20:58,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11672f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:20:58, skipping insertion in model container [2021-10-21 19:20:58,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:20:58" (3/3) ... [2021-10-21 19:20:58,426 INFO L111 eAbstractionObserver]: Analyzing ICFG relax-1.i [2021-10-21 19:20:58,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:20:58,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2021-10-21 19:20:58,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:20:58,505 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 [2021-10-21 19:20:58,506 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-10-21 19:20:58,538 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) [2021-10-21 19:20:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:20:58,550 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:20:58,551 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:20:58,552 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)] === [2021-10-21 19:20:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:20:58,560 INFO L82 PathProgramCache]: Analyzing trace with hash -3143168, now seen corresponding path program 1 times [2021-10-21 19:20:58,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:20:58,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548935053] [2021-10-21 19:20:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:20:58,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:20:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:20:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:20:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:20:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:20:59,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:20:59,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548935053] [2021-10-21 19:20:59,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548935053] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:20:59,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:20:59,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:20:59,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582875810] [2021-10-21 19:20:59,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:20:59,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:20:59,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:20:59,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:20:59,203 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) [2021-10-21 19:20:59,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:20:59,761 INFO L93 Difference]: Finished difference Result 96 states and 113 transitions. [2021-10-21 19:20:59,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:20:59,764 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 [2021-10-21 19:20:59,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:20:59,781 INFO L225 Difference]: With dead ends: 96 [2021-10-21 19:20:59,782 INFO L226 Difference]: Without dead ends: 93 [2021-10-21 19:20:59,784 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 120.0ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:20:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-21 19:20:59,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-10-21 19:20:59,852 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) [2021-10-21 19:20:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2021-10-21 19:20:59,859 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 11 [2021-10-21 19:20:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:20:59,860 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2021-10-21 19:20:59,860 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) [2021-10-21 19:20:59,861 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2021-10-21 19:20:59,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:20:59,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:20:59,862 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:20:59,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:20:59,863 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)] === [2021-10-21 19:20:59,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:20:59,866 INFO L82 PathProgramCache]: Analyzing trace with hash -3143167, now seen corresponding path program 1 times [2021-10-21 19:20:59,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:20:59,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101127094] [2021-10-21 19:20:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:20:59,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:20:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:20:59,995 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:21:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:21:00,130 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:21:00,134 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:21:00,136 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location is_relaxed_prefixErr1REQUIRES_VIOLATION [2021-10-21 19:21:00,139 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 19:21:00,140 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location is_relaxed_prefixErr0REQUIRES_VIOLATION [2021-10-21 19:21:00,141 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location is_relaxed_prefixErr2REQUIRES_VIOLATION [2021-10-21 19:21:00,141 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location is_relaxed_prefixErr3REQUIRES_VIOLATION [2021-10-21 19:21:00,142 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 19:21:00,142 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 19:21:00,142 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 19:21:00,143 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 19:21:00,143 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 19:21:00,143 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 19:21:00,144 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 19:21:00,144 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 19:21:00,144 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-21 19:21:00,146 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-21 19:21:00,146 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-21 19:21:00,147 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-21 19:21:00,147 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-21 19:21:00,148 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-21 19:21:00,148 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-21 19:21:00,148 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-21 19:21:00,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-21 19:21:00,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-21 19:21:00,149 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-21 19:21:00,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-21 19:21:00,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:21:00,151 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:21:00,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:21:00,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:21:00,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:21:00,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:21:00,154 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:21:00,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:21:00,163 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:21:00,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:21:00 BoogieIcfgContainer [2021-10-21 19:21:00,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:21:00,207 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:21:00,207 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:21:00,207 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:21:00,208 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:20:58" (3/4) ... [2021-10-21 19:21:00,210 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:21:00,286 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9719b9e3-c8c7-4e23-b290-695e1e6f6f77/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:21:00,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:21:00,291 INFO L168 Benchmark]: Toolchain (without parser) took 3754.29 ms. Allocated memory is still 123.7 MB. Free memory was 83.0 MB in the beginning and 58.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:00,292 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 123.7 MB. Free memory is still 100.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:21:00,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.02 ms. Allocated memory is still 123.7 MB. Free memory was 82.8 MB in the beginning and 91.4 MB in the end (delta: -8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:00,294 INFO L168 Benchmark]: Boogie Preprocessor took 142.57 ms. Allocated memory is still 123.7 MB. Free memory was 91.4 MB in the beginning and 88.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:00,295 INFO L168 Benchmark]: RCFGBuilder took 1173.22 ms. Allocated memory is still 123.7 MB. Free memory was 88.3 MB in the beginning and 63.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:00,297 INFO L168 Benchmark]: TraceAbstraction took 1789.00 ms. Allocated memory is still 123.7 MB. Free memory was 63.6 MB in the beginning and 60.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:00,302 INFO L168 Benchmark]: Witness Printer took 82.90 ms. Allocated memory is still 123.7 MB. Free memory was 60.8 MB in the beginning and 58.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:00,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 123.7 MB. Free memory is still 100.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 548.02 ms. Allocated memory is still 123.7 MB. Free memory was 82.8 MB in the beginning and 91.4 MB in the end (delta: -8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 142.57 ms. Allocated memory is still 123.7 MB. Free memory was 91.4 MB in the beginning and 88.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1173.22 ms. Allocated memory is still 123.7 MB. Free memory was 88.3 MB in the beginning and 63.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1789.00 ms. Allocated memory is still 123.7 MB. Free memory was 63.6 MB in the beginning and 60.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Witness Printer took 82.90 ms. Allocated memory is still 123.7 MB. Free memory was 60.8 MB in the beginning and 58.7 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 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)=4294967294, \old(pat_length)=1, a={-1:0}, pat={-3:0}] [L579] COND FALSE !(pat_length>a_length+1) [L581] int shift=0; [L582] int i=0; VAL [\old(a_length)=4294967294, \old(pat_length)=1, a={-1:0}, a={-1:0}, a_length=4294967294, i=0, pat={-3:0}, pat={-3:0}, pat_length=1, shift=0] [L582] COND TRUE i