./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-examples/relax-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer --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 dbd52e95eb1af7e22fe9d404e18d13efde04c9db .......................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-28 03:04:09,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:04:09,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:04:10,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:04:10,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:04:10,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:04:10,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:04:10,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:04:10,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:04:10,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:04:10,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:04:10,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:04:10,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:04:10,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:04:10,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:04:10,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:04:10,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:04:10,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:04:10,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:04:10,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:04:10,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:04:10,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:04:10,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:04:10,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:04:10,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:04:10,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:04:10,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:04:10,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:04:10,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:04:10,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:04:10,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:04:10,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:04:10,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:04:10,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:04:10,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:04:10,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:04:10,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:04:10,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:04:10,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:04:10,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:04:10,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:04:10,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:04:10,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:04:10,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:04:10,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:04:10,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:04:10,142 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:04:10,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:04:10,142 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:04:10,143 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:04:10,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:04:10,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:04:10,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:04:10,144 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:04:10,145 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:04:10,145 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:04:10,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:04:10,145 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:04:10,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:04:10,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:04:10,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:04:10,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:04:10,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:04:10,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:04:10,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:04:10,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:04:10,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:04:10,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:04:10,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:04:10,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:04:10,149 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-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd52e95eb1af7e22fe9d404e18d13efde04c9db [2020-11-28 03:04:10,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:04:10,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:04:10,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:04:10,479 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:04:10,480 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:04:10,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer/../../sv-benchmarks/c/array-examples/relax-1.i [2020-11-28 03:04:10,574 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer/data/4edd6ed3d/bfe9f7ab9ec24420869d148f580a9175/FLAG179bc8d59 [2020-11-28 03:04:11,143 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:04:11,144 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/sv-benchmarks/c/array-examples/relax-1.i [2020-11-28 03:04:11,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer/data/4edd6ed3d/bfe9f7ab9ec24420869d148f580a9175/FLAG179bc8d59 [2020-11-28 03:04:11,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer/data/4edd6ed3d/bfe9f7ab9ec24420869d148f580a9175 [2020-11-28 03:04:11,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:04:11,490 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:04:11,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:11,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:04:11,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:04:11,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:11" (1/1) ... [2020-11-28 03:04:11,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585b7364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:11, skipping insertion in model container [2020-11-28 03:04:11,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:11" (1/1) ... [2020-11-28 03:04:11,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:04:11,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:04:12,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:12,031 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:04:12,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:12,143 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:04:12,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:12 WrapperNode [2020-11-28 03:04:12,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:12,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:04:12,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:04:12,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:04:12,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:12" (1/1) ... [2020-11-28 03:04:12,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:12" (1/1) ... [2020-11-28 03:04:12,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:12" (1/1) ... [2020-11-28 03:04:12,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:12" (1/1) ... [2020-11-28 03:04:12,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:12" (1/1) ... [2020-11-28 03:04:12,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:12" (1/1) ... [2020-11-28 03:04:12,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:12" (1/1) ... [2020-11-28 03:04:12,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:04:12,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:04:12,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:04:12,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:04:12,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:04:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:04:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:04:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-28 03:04:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:04:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-28 03:04:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:04:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:04:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure is_relaxed_prefix [2020-11-28 03:04:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:04:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:04:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-28 03:04:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-11-28 03:04:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:04:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 03:04:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 03:04:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:04:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:04:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:04:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-28 03:04:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:04:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:04:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:04:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:04:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:04:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:04:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:04:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:04:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:04:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:04:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:04:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:04:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:04:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:04:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:04:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:04:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:04:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:04:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:04:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:04:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:04:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:04:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:04:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:04:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:04:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:04:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:04:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:04:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:04:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:04:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:04:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:04:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:04:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:04:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:04:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:04:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:04:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:04:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:04:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:04:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:04:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:04:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:04:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:04:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:04:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:04:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:04:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:04:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:04:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:04:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:04:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:04:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:04:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:04:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:04:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:04:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-28 03:04:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:04:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:04:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:04:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:04:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:04:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:04:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:04:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:04:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:04:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:04:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:04:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:04:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:04:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:04:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:04:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:04:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:04:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:04:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:04:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:04:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:04:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:04:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:04:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:04:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:04:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:04:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:04:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:04:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:04:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:04:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:04:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:04:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:04:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:04:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:04:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:04:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:04:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:04:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:04:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:04:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:04:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:04:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:04:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:04:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure is_relaxed_prefix [2020-11-28 03:04:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:04:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:04:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:04:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:04:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:04:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:04:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:04:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:04:13,152 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:04:13,152 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-28 03:04:13,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:13 BoogieIcfgContainer [2020-11-28 03:04:13,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:04:13,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:04:13,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:04:13,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:04:13,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:04:11" (1/3) ... [2020-11-28 03:04:13,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574c6554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:13, skipping insertion in model container [2020-11-28 03:04:13,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:12" (2/3) ... [2020-11-28 03:04:13,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574c6554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:13, skipping insertion in model container [2020-11-28 03:04:13,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:13" (3/3) ... [2020-11-28 03:04:13,162 INFO L111 eAbstractionObserver]: Analyzing ICFG relax-1.i [2020-11-28 03:04:13,173 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:04:13,177 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 32 error locations. [2020-11-28 03:04:13,188 INFO L253 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2020-11-28 03:04:13,209 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:04:13,209 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:04:13,209 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:04:13,209 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:04:13,209 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:04:13,209 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:04:13,209 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:04:13,209 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:04:13,254 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2020-11-28 03:04:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:04:13,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:13,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:13,265 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, is_relaxed_prefixErr2REQUIRES_VIOLATION, is_relaxed_prefixErr3REQUIRES_VIOLATION, is_relaxed_prefixErr0REQUIRES_VIOLATION, is_relaxed_prefixErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:04:13,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:13,278 INFO L82 PathProgramCache]: Analyzing trace with hash -616614522, now seen corresponding path program 1 times [2020-11-28 03:04:13,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:13,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998370170] [2020-11-28 03:04:13,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:13,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:04:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:13,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998370170] [2020-11-28 03:04:13,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:13,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:04:13,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131698583] [2020-11-28 03:04:13,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:04:13,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:13,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:04:13,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:04:13,621 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 6 states. [2020-11-28 03:04:14,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:14,189 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2020-11-28 03:04:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:04:14,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 03:04:14,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:14,202 INFO L225 Difference]: With dead ends: 98 [2020-11-28 03:04:14,202 INFO L226 Difference]: Without dead ends: 95 [2020-11-28 03:04:14,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:04:14,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-28 03:04:14,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-11-28 03:04:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-28 03:04:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 112 transitions. [2020-11-28 03:04:14,262 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 112 transitions. Word has length 11 [2020-11-28 03:04:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:14,263 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 112 transitions. [2020-11-28 03:04:14,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:04:14,263 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 112 transitions. [2020-11-28 03:04:14,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:04:14,264 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:14,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:14,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:04:14,265 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, is_relaxed_prefixErr2REQUIRES_VIOLATION, is_relaxed_prefixErr3REQUIRES_VIOLATION, is_relaxed_prefixErr0REQUIRES_VIOLATION, is_relaxed_prefixErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr20ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-28 03:04:14,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:14,265 INFO L82 PathProgramCache]: Analyzing trace with hash -616614521, now seen corresponding path program 1 times [2020-11-28 03:04:14,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:14,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969334779] [2020-11-28 03:04:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:14,332 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:14,396 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:14,435 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:14,437 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:04:14,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:04:14,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:04:14 BoogieIcfgContainer [2020-11-28 03:04:14,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:04:14,478 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:04:14,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:04:14,479 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:04:14,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:13" (3/4) ... [2020-11-28 03:04:14,481 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:04:14,515 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_76a1166f-082b-4c3e-b4fd-6694a1e164eb/bin/uautomizer/witness.graphml [2020-11-28 03:04:14,515 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:04:14,517 INFO L168 Benchmark]: Toolchain (without parser) took 3026.49 ms. Allocated memory was 77.6 MB in the beginning and 132.1 MB in the end (delta: 54.5 MB). Free memory was 45.7 MB in the beginning and 69.3 MB in the end (delta: -23.6 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:14,518 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 77.6 MB. Free memory was 49.2 MB in the beginning and 49.2 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:14,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.31 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 45.6 MB in the beginning and 73.7 MB in the end (delta: -28.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:14,520 INFO L168 Benchmark]: Boogie Preprocessor took 62.01 ms. Allocated memory is still 109.1 MB. Free memory was 73.7 MB in the beginning and 71.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:14,520 INFO L168 Benchmark]: RCFGBuilder took 945.80 ms. Allocated memory is still 109.1 MB. Free memory was 71.0 MB in the beginning and 45.6 MB in the end (delta: 25.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:14,521 INFO L168 Benchmark]: TraceAbstraction took 1321.92 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 44.9 MB in the beginning and 71.4 MB in the end (delta: -26.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:14,521 INFO L168 Benchmark]: Witness Printer took 37.18 ms. Allocated memory is still 132.1 MB. Free memory was 71.4 MB in the beginning and 69.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:14,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 77.6 MB. Free memory was 49.2 MB in the beginning and 49.2 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 653.31 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 45.6 MB in the beginning and 73.7 MB in the end (delta: -28.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.01 ms. Allocated memory is still 109.1 MB. Free memory was 73.7 MB in the beginning and 71.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 945.80 ms. Allocated memory is still 109.1 MB. Free memory was 71.0 MB in the beginning and 45.6 MB in the end (delta: 25.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1321.92 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 44.9 MB in the beginning and 71.4 MB in the end (delta: -26.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 37.18 ms. Allocated memory is still 132.1 MB. Free memory was 71.4 MB in the beginning and 69.3 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: - 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); VAL [a={1:0}, a_len=-2, malloc(sizeof(int)*a_len)={1:0}, malloc(sizeof(int)*pat_len)={-1:0}, pat={-1:0}, pat_len=-4294967295] [L602] CALL is_relaxed_prefix(pat, pat_len, a, a_len) VAL [\old(a_length)=4294967294, \old(pat_length)=1, a={1:0}, pat={-1:0}] [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={-1:0}, pat={-1:0}, pat_length=1, shift=0] [L582] COND TRUE i