./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0158_1-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/test-0158_1-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G 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 816de43cb6e982d6a1f876f61d346a36add599ac ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:34:23,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:34:23,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:34:23,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:34:23,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:34:23,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:34:23,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:34:23,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:34:23,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:34:23,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:34:23,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:34:23,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:34:23,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:34:23,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:34:23,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:34:23,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:34:23,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:34:23,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:34:23,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:34:23,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:34:23,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:34:23,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:34:23,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:34:23,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:34:23,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:34:23,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:34:23,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:34:23,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:34:23,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:34:23,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:34:23,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:34:23,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:34:23,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:34:23,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:34:23,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:34:23,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:34:23,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:34:23,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:34:23,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:34:23,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:34:23,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:34:23,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:34:23,517 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:34:23,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:34:23,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:34:23,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:34:23,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:34:23,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:34:23,520 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:34:23,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:34:23,520 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:34:23,520 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:34:23,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:34:23,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:34:23,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:34:23,521 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:34:23,521 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:34:23,521 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:34:23,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:34:23,521 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:34:23,521 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:34:23,521 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:34:23,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:34:23,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:34:23,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:34:23,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:34:23,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:34:23,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:34:23,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:34:23,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:34:23,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:34:23,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 816de43cb6e982d6a1f876f61d346a36add599ac [2021-08-30 17:34:23,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:34:23,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:34:23,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:34:23,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:34:23,816 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:34:23,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-3.i [2021-08-30 17:34:23,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f1e15ca/0a53db81141f4c2783fe96310beffeb9/FLAG0774a1bdb [2021-08-30 17:34:24,412 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:34:24,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-3.i [2021-08-30 17:34:24,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f1e15ca/0a53db81141f4c2783fe96310beffeb9/FLAG0774a1bdb [2021-08-30 17:34:24,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f1e15ca/0a53db81141f4c2783fe96310beffeb9 [2021-08-30 17:34:24,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:34:24,897 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:34:24,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:34:24,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:34:24,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:34:24,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:34:24" (1/1) ... [2021-08-30 17:34:24,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c101c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:24, skipping insertion in model container [2021-08-30 17:34:24,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:34:24" (1/1) ... [2021-08-30 17:34:24,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:34:24,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:34:25,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:34:25,120 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:34:25,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:34:25,214 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:34:25,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:25 WrapperNode [2021-08-30 17:34:25,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:34:25,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:34:25,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:34:25,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:34:25,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:25" (1/1) ... [2021-08-30 17:34:25,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:25" (1/1) ... [2021-08-30 17:34:25,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:25" (1/1) ... [2021-08-30 17:34:25,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:25" (1/1) ... [2021-08-30 17:34:25,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:25" (1/1) ... [2021-08-30 17:34:25,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:25" (1/1) ... [2021-08-30 17:34:25,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:25" (1/1) ... [2021-08-30 17:34:25,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:34:25,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:34:25,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:34:25,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:34:25,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:25" (1/1) ... [2021-08-30 17:34:25,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:34:25,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:34:25,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:34:25,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:34:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:34:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:34:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 17:34:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:34:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:34:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:34:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:34:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:34:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:34:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:34:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 17:34:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 17:34:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 17:34:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 17:34:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:34:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:34:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:34:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:34:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:34:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:34:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:34:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:34:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:34:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:34:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:34:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:34:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:34:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:34:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:34:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:34:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:34:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:34:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:34:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:34:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:34:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:34:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:34:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:34:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:34:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:34:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:34:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:34:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:34:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:34:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:34:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:34:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:34:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:34:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:34:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:34:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:34:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:34:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:34:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:34:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:34:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:34:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:34:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:34:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:34:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:34:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:34:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:34:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:34:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:34:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:34:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:34:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:34:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:34:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:34:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:34:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:34:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:34:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:34:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:34:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:34:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:34:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:34:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:34:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:34:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:34:25,342 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:34:25,342 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:34:25,342 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:34:25,342 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:34:25,342 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:34:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:34:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:34:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:34:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:34:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:34:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:34:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:34:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:34:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:34:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:34:25,344 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:34:25,344 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:34:25,344 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:34:25,344 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:34:25,344 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:34:25,344 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:34:25,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:34:25,344 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:34:25,344 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:34:25,345 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:34:25,345 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:34:25,345 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:34:25,345 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:34:25,345 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:34:25,345 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:34:25,345 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:34:25,345 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:34:25,346 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:34:25,346 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:34:25,346 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:34:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:34:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:34:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:34:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:34:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:34:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:34:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:34:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:34:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:34:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:34:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:34:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 17:34:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 17:34:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:34:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:34:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 17:34:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:34:25,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:34:25,632 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-30 17:34:25,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:34:25 BoogieIcfgContainer [2021-08-30 17:34:25,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:34:25,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:34:25,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:34:25,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:34:25,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:34:24" (1/3) ... [2021-08-30 17:34:25,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30904534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:34:25, skipping insertion in model container [2021-08-30 17:34:25,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:34:25" (2/3) ... [2021-08-30 17:34:25,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30904534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:34:25, skipping insertion in model container [2021-08-30 17:34:25,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:34:25" (3/3) ... [2021-08-30 17:34:25,640 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-3.i [2021-08-30 17:34:25,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:34:25,644 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2021-08-30 17:34:25,677 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:34:25,683 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, mConcurrency=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 [2021-08-30 17:34:25,683 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-08-30 17:34:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 43 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 17:34:25,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:34:25,701 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:25,701 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:25,701 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-08-30 17:34:25,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:25,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1605920523, now seen corresponding path program 1 times [2021-08-30 17:34:25,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:34:25,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735421322] [2021-08-30 17:34:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:25,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:34:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:25,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:34:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:25,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:34:25,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735421322] [2021-08-30 17:34:25,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735421322] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:25,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:25,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 17:34:25,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299296338] [2021-08-30 17:34:25,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:34:25,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:34:25,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:34:25,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:25,989 INFO L87 Difference]: Start difference. First operand has 48 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 43 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:26,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:26,130 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2021-08-30 17:34:26,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 17:34:26,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:34:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:26,139 INFO L225 Difference]: With dead ends: 41 [2021-08-30 17:34:26,139 INFO L226 Difference]: Without dead ends: 38 [2021-08-30 17:34:26,142 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.63ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:26,145 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 25 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.95ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:26,146 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 10 Invalid, 95 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 108.95ms Time] [2021-08-30 17:34:26,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-30 17:34:26,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-08-30 17:34:26,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 34 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:26,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-08-30 17:34:26,177 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 7 [2021-08-30 17:34:26,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:26,177 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-08-30 17:34:26,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:26,177 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-08-30 17:34:26,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 17:34:26,178 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:26,178 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:26,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 17:34:26,178 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-08-30 17:34:26,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:26,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1605920524, now seen corresponding path program 1 times [2021-08-30 17:34:26,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:34:26,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799678387] [2021-08-30 17:34:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:26,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:34:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:26,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:34:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:26,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:34:26,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799678387] [2021-08-30 17:34:26,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799678387] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:26,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:26,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 17:34:26,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830929804] [2021-08-30 17:34:26,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 17:34:26,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:34:26,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 17:34:26,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:26,312 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:26,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:26,380 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-08-30 17:34:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 17:34:26,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-30 17:34:26,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:26,383 INFO L225 Difference]: With dead ends: 31 [2021-08-30 17:34:26,383 INFO L226 Difference]: Without dead ends: 31 [2021-08-30 17:34:26,384 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.10ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 17:34:26,389 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.57ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:26,389 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 7 Invalid, 69 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 56.57ms Time] [2021-08-30 17:34:26,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-30 17:34:26,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-08-30 17:34:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.380952380952381) internal successors, (29), 27 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-08-30 17:34:26,397 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 7 [2021-08-30 17:34:26,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:26,398 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-08-30 17:34:26,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-08-30 17:34:26,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 17:34:26,399 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:26,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:26,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 17:34:26,399 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr14ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-08-30 17:34:26,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:26,400 INFO L82 PathProgramCache]: Analyzing trace with hash -202342310, now seen corresponding path program 1 times [2021-08-30 17:34:26,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:34:26,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723838897] [2021-08-30 17:34:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:26,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:34:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:26,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:34:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:26,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:34:26,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723838897] [2021-08-30 17:34:26,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723838897] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:26,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:26,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 17:34:26,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404390556] [2021-08-30 17:34:26,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:34:26,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:34:26,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:34:26,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:34:26,511 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:26,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:26,628 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-08-30 17:34:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:34:26,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-30 17:34:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:26,635 INFO L225 Difference]: With dead ends: 47 [2021-08-30 17:34:26,635 INFO L226 Difference]: Without dead ends: 47 [2021-08-30 17:34:26,635 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.01ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:34:26,636 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.39ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.14ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:26,637 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 10 Invalid, 158 Unknown, 0 Unchecked, 3.39ms Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 90.14ms Time] [2021-08-30 17:34:26,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-30 17:34:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2021-08-30 17:34:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 29 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-08-30 17:34:26,641 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 16 [2021-08-30 17:34:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:26,641 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-08-30 17:34:26,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-08-30 17:34:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 17:34:26,642 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:26,642 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:26,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 17:34:26,642 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr14ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-08-30 17:34:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:26,643 INFO L82 PathProgramCache]: Analyzing trace with hash -54578950, now seen corresponding path program 1 times [2021-08-30 17:34:26,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:34:26,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949563708] [2021-08-30 17:34:26,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:26,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:34:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:26,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:34:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:26,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:34:26,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949563708] [2021-08-30 17:34:26,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949563708] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:26,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:26,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 17:34:26,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96086438] [2021-08-30 17:34:26,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:34:26,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:34:26,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:34:26,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:34:26,772 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:26,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:26,861 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-08-30 17:34:26,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:34:26,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-30 17:34:26,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:26,862 INFO L225 Difference]: With dead ends: 32 [2021-08-30 17:34:26,863 INFO L226 Difference]: Without dead ends: 32 [2021-08-30 17:34:26,863 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.32ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:34:26,864 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.86ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.66ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:26,864 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 13 Invalid, 113 Unknown, 0 Unchecked, 2.86ms Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 67.66ms Time] [2021-08-30 17:34:26,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-30 17:34:26,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-08-30 17:34:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 28 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-08-30 17:34:26,868 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 16 [2021-08-30 17:34:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:26,869 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-08-30 17:34:26,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:26,869 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-08-30 17:34:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 17:34:26,869 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:26,870 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:26,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 17:34:26,870 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr15ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-08-30 17:34:26,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:26,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1691947366, now seen corresponding path program 1 times [2021-08-30 17:34:26,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:34:26,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706463924] [2021-08-30 17:34:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:26,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:34:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:26,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:34:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:26,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:34:26,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706463924] [2021-08-30 17:34:26,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706463924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:26,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:26,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 17:34:26,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131506140] [2021-08-30 17:34:26,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:34:26,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:34:26,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:34:26,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:34:26,941 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:27,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:27,031 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-08-30 17:34:27,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:34:27,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-08-30 17:34:27,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:27,035 INFO L225 Difference]: With dead ends: 31 [2021-08-30 17:34:27,035 INFO L226 Difference]: Without dead ends: 31 [2021-08-30 17:34:27,036 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.46ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:34:27,040 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.42ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:27,041 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 13 Invalid, 111 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 70.42ms Time] [2021-08-30 17:34:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-30 17:34:27,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-08-30 17:34:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 27 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:27,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-08-30 17:34:27,049 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 17 [2021-08-30 17:34:27,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:27,049 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-08-30 17:34:27,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:27,049 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-08-30 17:34:27,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 17:34:27,050 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:27,050 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:27,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 17:34:27,051 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr16ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-08-30 17:34:27,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:27,051 INFO L82 PathProgramCache]: Analyzing trace with hash -910760708, now seen corresponding path program 1 times [2021-08-30 17:34:27,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:34:27,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856644631] [2021-08-30 17:34:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:27,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:34:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:34:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:27,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:34:27,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856644631] [2021-08-30 17:34:27,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856644631] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:27,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:27,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 17:34:27,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277115678] [2021-08-30 17:34:27,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:34:27,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:34:27,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:34:27,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:34:27,148 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:27,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:27,230 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-08-30 17:34:27,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 17:34:27,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-30 17:34:27,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:27,232 INFO L225 Difference]: With dead ends: 30 [2021-08-30 17:34:27,232 INFO L226 Difference]: Without dead ends: 30 [2021-08-30 17:34:27,233 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.66ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 17:34:27,235 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.59ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.99ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:27,237 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 113 Unknown, 0 Unchecked, 6.59ms Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 58.99ms Time] [2021-08-30 17:34:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-30 17:34:27,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-30 17:34:27,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 26 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-08-30 17:34:27,247 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 18 [2021-08-30 17:34:27,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:27,247 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-08-30 17:34:27,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-08-30 17:34:27,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 17:34:27,248 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:27,248 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:27,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 17:34:27,248 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr17ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-08-30 17:34:27,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:27,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1831189212, now seen corresponding path program 1 times [2021-08-30 17:34:27,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:34:27,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530472867] [2021-08-30 17:34:27,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:27,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:34:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:27,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:34:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:27,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:34:27,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530472867] [2021-08-30 17:34:27,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530472867] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:27,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:27,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 17:34:27,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433700608] [2021-08-30 17:34:27,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 17:34:27,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:34:27,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 17:34:27,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:34:27,324 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:27,418 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-08-30 17:34:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:34:27,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-08-30 17:34:27,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:27,420 INFO L225 Difference]: With dead ends: 29 [2021-08-30 17:34:27,420 INFO L226 Difference]: Without dead ends: 29 [2021-08-30 17:34:27,420 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 47.09ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:34:27,423 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.37ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:27,423 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 16 Invalid, 116 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [8 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 62.37ms Time] [2021-08-30 17:34:27,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-30 17:34:27,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-30 17:34:27,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:27,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-08-30 17:34:27,433 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 19 [2021-08-30 17:34:27,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:27,433 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-08-30 17:34:27,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:27,433 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-08-30 17:34:27,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:34:27,434 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:27,434 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:27,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-30 17:34:27,435 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr18ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-08-30 17:34:27,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:27,435 INFO L82 PathProgramCache]: Analyzing trace with hash 932290814, now seen corresponding path program 1 times [2021-08-30 17:34:27,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:34:27,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084404147] [2021-08-30 17:34:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:27,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:34:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:27,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 17:34:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:34:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:34:27,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 17:34:27,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084404147] [2021-08-30 17:34:27,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084404147] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 17:34:27,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:34:27,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 17:34:27,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331206348] [2021-08-30 17:34:27,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 17:34:27,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 17:34:27,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 17:34:27,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:34:27,527 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:27,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:34:27,611 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-08-30 17:34:27,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:34:27,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-30 17:34:27,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:34:27,614 INFO L225 Difference]: With dead ends: 28 [2021-08-30 17:34:27,614 INFO L226 Difference]: Without dead ends: 28 [2021-08-30 17:34:27,615 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 49.72ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:34:27,615 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.51ms IncrementalHoareTripleChecker+Time [2021-08-30 17:34:27,616 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 16 Invalid, 112 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [8 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 53.51ms Time] [2021-08-30 17:34:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-30 17:34:27,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-08-30 17:34:27,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:27,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-08-30 17:34:27,625 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 20 [2021-08-30 17:34:27,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:34:27,625 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-08-30 17:34:27,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 17:34:27,626 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-08-30 17:34:27,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 17:34:27,626 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:34:27,626 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:34:27,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 17:34:27,627 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr19ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-08-30 17:34:27,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:34:27,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1163755746, now seen corresponding path program 1 times [2021-08-30 17:34:27,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 17:34:27,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029093991] [2021-08-30 17:34:27,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:34:27,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 17:34:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:34:27,651 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 17:34:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 17:34:27,693 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 17:34:27,694 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 17:34:27,695 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr19ASSERT_VIOLATIONMEMORY_FREE (20 of 21 remaining) [2021-08-30 17:34:27,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (19 of 21 remaining) [2021-08-30 17:34:27,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (18 of 21 remaining) [2021-08-30 17:34:27,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (17 of 21 remaining) [2021-08-30 17:34:27,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (16 of 21 remaining) [2021-08-30 17:34:27,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (15 of 21 remaining) [2021-08-30 17:34:27,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (14 of 21 remaining) [2021-08-30 17:34:27,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (13 of 21 remaining) [2021-08-30 17:34:27,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (12 of 21 remaining) [2021-08-30 17:34:27,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (11 of 21 remaining) [2021-08-30 17:34:27,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (10 of 21 remaining) [2021-08-30 17:34:27,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (9 of 21 remaining) [2021-08-30 17:34:27,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (8 of 21 remaining) [2021-08-30 17:34:27,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (7 of 21 remaining) [2021-08-30 17:34:27,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (6 of 21 remaining) [2021-08-30 17:34:27,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14ASSERT_VIOLATIONMEMORY_FREE (5 of 21 remaining) [2021-08-30 17:34:27,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15ASSERT_VIOLATIONMEMORY_FREE (4 of 21 remaining) [2021-08-30 17:34:27,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16ASSERT_VIOLATIONMEMORY_FREE (3 of 21 remaining) [2021-08-30 17:34:27,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17ASSERT_VIOLATIONMEMORY_FREE (2 of 21 remaining) [2021-08-30 17:34:27,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18ASSERT_VIOLATIONMEMORY_FREE (1 of 21 remaining) [2021-08-30 17:34:27,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ENSURES_VIOLATIONMEMORY_LEAK (0 of 21 remaining) [2021-08-30 17:34:27,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-30 17:34:27,704 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:34:27,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:34:27 BoogieIcfgContainer [2021-08-30 17:34:27,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:34:27,742 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:34:27,742 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:34:27,742 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:34:27,742 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:34:25" (3/4) ... [2021-08-30 17:34:27,744 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-30 17:34:27,789 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 17:34:27,790 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:34:27,790 INFO L158 Benchmark]: Toolchain (without parser) took 2893.25ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 38.7MB in the beginning and 36.8MB in the end (delta: 1.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-08-30 17:34:27,790 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 43.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:34:27,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.61ms. Allocated memory is still 60.8MB. Free memory was 38.5MB in the beginning and 41.5MB in the end (delta: -3.0MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2021-08-30 17:34:27,791 INFO L158 Benchmark]: Boogie Preprocessor took 47.65ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 39.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 17:34:27,791 INFO L158 Benchmark]: RCFGBuilder took 369.68ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 39.0MB in the beginning and 60.1MB in the end (delta: -21.1MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2021-08-30 17:34:27,792 INFO L158 Benchmark]: TraceAbstraction took 2105.73ms. Allocated memory is still 83.9MB. Free memory was 59.7MB in the beginning and 38.7MB in the end (delta: 21.1MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2021-08-30 17:34:27,792 INFO L158 Benchmark]: Witness Printer took 48.25ms. Allocated memory is still 83.9MB. Free memory was 38.7MB in the beginning and 36.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 17:34:27,794 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 43.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.61ms. Allocated memory is still 60.8MB. Free memory was 38.5MB in the beginning and 41.5MB in the end (delta: -3.0MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.65ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 39.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 369.68ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 39.0MB in the beginning and 60.1MB in the end (delta: -21.1MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2105.73ms. Allocated memory is still 83.9MB. Free memory was 59.7MB in the beginning and 38.7MB in the end (delta: 21.1MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * Witness Printer took 48.25ms. Allocated memory is still 83.9MB. Free memory was 38.7MB in the beginning and 36.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 545]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={-1:0}] [L535] EXPR data.p0 VAL [data={3:0}, data.p0={-1:0}] [L535] void *ptr = data.p0; [L536] COND FALSE !(__VERIFIER_nondet_int()) [L539] data.str.p2 = 30 VAL [data={3:0}, ptr={-1:0}] [L541] EXPR data.str.p2 VAL [data={3:0}, data.str.p2=30, ptr={-1:0}] [L541] COND FALSE !(25 > data.str.p2) [L544] EXPR data.p0 VAL [data={3:0}, data.p0={-1:0}, ptr={-1:0}] [L544] free(data.p0) VAL [data={3:0}, data.p0={-1:0}, ptr={-1:0}] [L544] free(data.p0) VAL [data={3:0}, data.p0={-1:0}, ptr={-1:0}] [L544] free(data.p0) [L545] free(ptr) VAL [data={3:0}, ptr={-1:0}] [L545] free(ptr) VAL [data={3:0}, ptr={-1:0}] [L545] free(ptr) VAL [data={3:0}, ptr={-1:0}] - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 66 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 2027.27ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 13.70ms, AutomataDifference: 877.27ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.15ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 141 SdHoareTripleChecker+Valid, 568.62ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 141 mSDsluCounter, 98 SdHoareTripleChecker+Invalid, 454.76ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 277 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 844 IncrementalHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 25 mSDtfsCounter, 844 mSolverCounterSat, 23.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 276.97ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 62.96ms AutomataMinimizationTime, 8 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.38ms SsaConstructionTime, 152.48ms SatisfiabilityAnalysisTime, 643.79ms InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-30 17:34:27,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...