./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/simple-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 20ed64ec 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-properties/simple-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af4b28e958de4f654443dbaa4f0a24d91f735460 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 04:26:40,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:26:40,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:26:40,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:26:40,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:26:40,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:26:40,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:26:40,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:26:40,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:26:40,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:26:40,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:26:40,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:26:40,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:26:40,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:26:40,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:26:40,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:26:40,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:26:40,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:26:40,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:26:40,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:26:40,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:26:40,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:26:40,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:26:40,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:26:40,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:26:40,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:26:40,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:26:40,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:26:40,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:26:40,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:26:40,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:26:40,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:26:40,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:26:40,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:26:40,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:26:40,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:26:40,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:26:40,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:26:40,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:26:40,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:26:40,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:26:40,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-08-27 04:26:40,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:26:40,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:26:40,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:26:40,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:26:40,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:26:40,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:26:40,395 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:26:40,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:26:40,395 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:26:40,395 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:26:40,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:26:40,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:26:40,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:26:40,396 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:26:40,396 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:26:40,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:26:40,397 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:26:40,397 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:26:40,397 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:26:40,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:26:40,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:26:40,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:26:40,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:26:40,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:26:40,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:26:40,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 04:26:40,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 04:26:40,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:26:40,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af4b28e958de4f654443dbaa4f0a24d91f735460 [2021-08-27 04:26:40,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:26:40,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:26:40,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:26:40,654 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:26:40,655 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:26:40,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple-1.i [2021-08-27 04:26:40,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b04d59d2c/723be4b73a7d4853896ce1714a7b7346/FLAG88b3a8dba [2021-08-27 04:26:41,129 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:26:41,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple-1.i [2021-08-27 04:26:41,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b04d59d2c/723be4b73a7d4853896ce1714a7b7346/FLAG88b3a8dba [2021-08-27 04:26:41,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b04d59d2c/723be4b73a7d4853896ce1714a7b7346 [2021-08-27 04:26:41,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:26:41,156 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:26:41,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:26:41,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:26:41,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:26:41,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:41" (1/1) ... [2021-08-27 04:26:41,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8bbad48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:41, skipping insertion in model container [2021-08-27 04:26:41,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:41" (1/1) ... [2021-08-27 04:26:41,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:26:41,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:26:41,404 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple-1.i[23237,23250] [2021-08-27 04:26:41,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:26:41,413 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:26:41,444 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple-1.i[23237,23250] [2021-08-27 04:26:41,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:26:41,469 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:26:41,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:41 WrapperNode [2021-08-27 04:26:41,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:26:41,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:26:41,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:26:41,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:26:41,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:41" (1/1) ... [2021-08-27 04:26:41,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:41" (1/1) ... [2021-08-27 04:26:41,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:41" (1/1) ... [2021-08-27 04:26:41,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:41" (1/1) ... [2021-08-27 04:26:41,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:41" (1/1) ... [2021-08-27 04:26:41,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:41" (1/1) ... [2021-08-27 04:26:41,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:41" (1/1) ... [2021-08-27 04:26:41,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:26:41,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:26:41,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:26:41,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:26:41,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:41" (1/1) ... [2021-08-27 04:26:41,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:26:41,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:26:41,541 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) [2021-08-27 04:26:41,547 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 [2021-08-27 04:26:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:26:41,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:26:41,567 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 04:26:41,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 04:26:41,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 04:26:41,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 04:26:41,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 04:26:41,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 04:26:41,569 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-27 04:26:41,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:26:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 04:26:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 04:26:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 04:26:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 04:26:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 04:26:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 04:26:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 04:26:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 04:26:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 04:26:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 04:26:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 04:26:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 04:26:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 04:26:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 04:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 04:26:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 04:26:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 04:26:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 04:26:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 04:26:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 04:26:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 04:26:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 04:26:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 04:26:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 04:26:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 04:26:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 04:26:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 04:26:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 04:26:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 04:26:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 04:26:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 04:26:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 04:26:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 04:26:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 04:26:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 04:26:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 04:26:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 04:26:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 04:26:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 04:26:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 04:26:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 04:26:41,579 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 04:26:41,579 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 04:26:41,579 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 04:26:41,579 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 04:26:41,579 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 04:26:41,579 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 04:26:41,579 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 04:26:41,579 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 04:26:41,580 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 04:26:41,580 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 04:26:41,580 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 04:26:41,580 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 04:26:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 04:26:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 04:26:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 04:26:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 04:26:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 04:26:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 04:26:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 04:26:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 04:26:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 04:26:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 04:26:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 04:26:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 04:26:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 04:26:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 04:26:41,584 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-27 04:26:41,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:26:41,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 04:26:41,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 04:26:41,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 04:26:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 04:26:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 04:26:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:26:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 04:26:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:26:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:26:41,852 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-27 04:26:42,089 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:26:42,089 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-08-27 04:26:42,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:42 BoogieIcfgContainer [2021-08-27 04:26:42,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:26:42,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:26:42,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:26:42,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:26:42,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:26:41" (1/3) ... [2021-08-27 04:26:42,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbc7b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:26:42, skipping insertion in model container [2021-08-27 04:26:42,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:41" (2/3) ... [2021-08-27 04:26:42,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbc7b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:26:42, skipping insertion in model container [2021-08-27 04:26:42,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:42" (3/3) ... [2021-08-27 04:26:42,095 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-1.i [2021-08-27 04:26:42,098 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:26:42,098 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-08-27 04:26:42,130 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:26:42,135 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 [2021-08-27 04:26:42,135 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-08-27 04:26:42,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 47 states have internal predecessors, (53), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 04:26:42,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 04:26:42,148 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:42,148 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:42,149 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 04:26:42,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:42,152 INFO L82 PathProgramCache]: Analyzing trace with hash -733404871, now seen corresponding path program 1 times [2021-08-27 04:26:42,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:42,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563776971] [2021-08-27 04:26:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:42,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:42,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:42,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:42,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563776971] [2021-08-27 04:26:42,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563776971] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:42,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:42,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 04:26:42,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706408149] [2021-08-27 04:26:42,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:26:42,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:42,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:26:42,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:42,358 INFO L87 Difference]: Start difference. First operand has 53 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 47 states have internal predecessors, (53), 4 states have call successors, (4), 3 states have call predecessors, (4), 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 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-27 04:26:42,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:42,466 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-08-27 04:26:42,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 04:26:42,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 9 [2021-08-27 04:26:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:42,472 INFO L225 Difference]: With dead ends: 52 [2021-08-27 04:26:42,472 INFO L226 Difference]: Without dead ends: 45 [2021-08-27 04:26:42,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:42,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-08-27 04:26:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-08-27 04:26:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 25 states have (on average 1.72) internal successors, (43), 41 states have internal predecessors, (43), 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) [2021-08-27 04:26:42,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-08-27 04:26:42,494 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 9 [2021-08-27 04:26:42,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:42,495 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-08-27 04:26:42,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-27 04:26:42,495 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-08-27 04:26:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 04:26:42,495 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:42,496 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:42,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 04:26:42,496 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 04:26:42,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:42,497 INFO L82 PathProgramCache]: Analyzing trace with hash -733404870, now seen corresponding path program 1 times [2021-08-27 04:26:42,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:42,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133397808] [2021-08-27 04:26:42,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:42,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:42,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:42,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133397808] [2021-08-27 04:26:42,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133397808] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:42,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:42,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 04:26:42,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327518999] [2021-08-27 04:26:42,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:26:42,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:42,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:26:42,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:42,574 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-27 04:26:42,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:42,630 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-08-27 04:26:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 04:26:42,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 9 [2021-08-27 04:26:42,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:42,631 INFO L225 Difference]: With dead ends: 44 [2021-08-27 04:26:42,632 INFO L226 Difference]: Without dead ends: 44 [2021-08-27 04:26:42,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-27 04:26:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-08-27 04:26:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 1.68) internal successors, (42), 40 states have internal predecessors, (42), 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) [2021-08-27 04:26:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-08-27 04:26:42,635 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 9 [2021-08-27 04:26:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:42,636 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-08-27 04:26:42,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-27 04:26:42,636 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-08-27 04:26:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 04:26:42,636 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:42,636 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:42,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 04:26:42,637 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 04:26:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:42,637 INFO L82 PathProgramCache]: Analyzing trace with hash -365871131, now seen corresponding path program 1 times [2021-08-27 04:26:42,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:42,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789303993] [2021-08-27 04:26:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:42,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:42,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:42,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789303993] [2021-08-27 04:26:42,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789303993] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:42,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:42,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:26:42,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928084911] [2021-08-27 04:26:42,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:42,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:42,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:42,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:42,697 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-08-27 04:26:42,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:42,793 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2021-08-27 04:26:42,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 04:26:42,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 12 [2021-08-27 04:26:42,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:42,795 INFO L225 Difference]: With dead ends: 75 [2021-08-27 04:26:42,795 INFO L226 Difference]: Without dead ends: 75 [2021-08-27 04:26:42,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-08-27 04:26:42,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 48. [2021-08-27 04:26:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 44 states have internal predecessors, (52), 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) [2021-08-27 04:26:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-08-27 04:26:42,808 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 12 [2021-08-27 04:26:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:42,808 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-08-27 04:26:42,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-08-27 04:26:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-08-27 04:26:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 04:26:42,808 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:42,809 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:42,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 04:26:42,809 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 04:26:42,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:42,810 INFO L82 PathProgramCache]: Analyzing trace with hash -365871130, now seen corresponding path program 1 times [2021-08-27 04:26:42,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:42,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116151695] [2021-08-27 04:26:42,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:42,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:42,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:42,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116151695] [2021-08-27 04:26:42,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116151695] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:42,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:42,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:26:42,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542754419] [2021-08-27 04:26:42,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:42,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:42,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:42,889 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-08-27 04:26:42,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:42,974 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2021-08-27 04:26:42,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:26:42,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 12 [2021-08-27 04:26:42,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:42,975 INFO L225 Difference]: With dead ends: 64 [2021-08-27 04:26:42,975 INFO L226 Difference]: Without dead ends: 64 [2021-08-27 04:26:42,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:42,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-27 04:26:42,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-08-27 04:26:42,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 52 states have internal predecessors, (59), 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) [2021-08-27 04:26:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2021-08-27 04:26:42,978 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 12 [2021-08-27 04:26:42,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:42,978 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2021-08-27 04:26:42,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-08-27 04:26:42,978 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2021-08-27 04:26:42,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 04:26:42,979 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:42,979 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:42,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 04:26:42,979 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr17ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 04:26:42,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:42,979 INFO L82 PathProgramCache]: Analyzing trace with hash -695098105, now seen corresponding path program 1 times [2021-08-27 04:26:42,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:42,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490211997] [2021-08-27 04:26:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:42,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:43,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:43,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:43,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490211997] [2021-08-27 04:26:43,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490211997] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:43,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:43,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:26:43,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501734852] [2021-08-27 04:26:43,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:43,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:43,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:43,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:43,028 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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) [2021-08-27 04:26:43,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:43,098 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-08-27 04:26:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:26:43,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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 [2021-08-27 04:26:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:43,099 INFO L225 Difference]: With dead ends: 61 [2021-08-27 04:26:43,099 INFO L226 Difference]: Without dead ends: 61 [2021-08-27 04:26:43,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:43,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-08-27 04:26:43,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2021-08-27 04:26:43,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 52 states have internal predecessors, (57), 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) [2021-08-27 04:26:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-08-27 04:26:43,105 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 17 [2021-08-27 04:26:43,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:43,105 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-08-27 04:26:43,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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) [2021-08-27 04:26:43,106 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-08-27 04:26:43,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 04:26:43,106 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:43,106 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:43,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 04:26:43,106 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 04:26:43,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:43,107 INFO L82 PathProgramCache]: Analyzing trace with hash -73163862, now seen corresponding path program 1 times [2021-08-27 04:26:43,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:43,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947825454] [2021-08-27 04:26:43,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:43,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:43,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:43,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947825454] [2021-08-27 04:26:43,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947825454] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:43,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:43,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-27 04:26:43,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059749688] [2021-08-27 04:26:43,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 04:26:43,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:43,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 04:26:43,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:26:43,216 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 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) [2021-08-27 04:26:43,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:43,311 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2021-08-27 04:26:43,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:26:43,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 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 [2021-08-27 04:26:43,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:43,312 INFO L225 Difference]: With dead ends: 77 [2021-08-27 04:26:43,312 INFO L226 Difference]: Without dead ends: 77 [2021-08-27 04:26:43,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:26:43,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-08-27 04:26:43,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2021-08-27 04:26:43,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 42 states have (on average 1.380952380952381) internal successors, (58), 53 states have internal predecessors, (58), 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) [2021-08-27 04:26:43,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2021-08-27 04:26:43,315 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 18 [2021-08-27 04:26:43,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:43,315 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2021-08-27 04:26:43,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 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) [2021-08-27 04:26:43,315 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2021-08-27 04:26:43,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 04:26:43,316 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:43,316 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:43,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 04:26:43,316 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 04:26:43,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:43,317 INFO L82 PathProgramCache]: Analyzing trace with hash -159453352, now seen corresponding path program 1 times [2021-08-27 04:26:43,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:43,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914317930] [2021-08-27 04:26:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:43,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:43,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:43,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:43,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914317930] [2021-08-27 04:26:43,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914317930] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:43,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:43,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 04:26:43,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934938636] [2021-08-27 04:26:43,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:26:43,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:43,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:26:43,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:26:43,368 INFO L87 Difference]: Start difference. First operand 57 states and 61 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) [2021-08-27 04:26:43,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:43,489 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-08-27 04:26:43,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:26:43,489 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 [2021-08-27 04:26:43,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:43,490 INFO L225 Difference]: With dead ends: 69 [2021-08-27 04:26:43,490 INFO L226 Difference]: Without dead ends: 69 [2021-08-27 04:26:43,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-27 04:26:43,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-08-27 04:26:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2021-08-27 04:26:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 51 states have internal predecessors, (56), 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) [2021-08-27 04:26:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-08-27 04:26:43,493 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 20 [2021-08-27 04:26:43,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:43,493 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-08-27 04:26:43,493 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) [2021-08-27 04:26:43,493 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-08-27 04:26:43,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 04:26:43,494 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:43,494 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:43,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-27 04:26:43,494 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 04:26:43,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:43,494 INFO L82 PathProgramCache]: Analyzing trace with hash -159453351, now seen corresponding path program 1 times [2021-08-27 04:26:43,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:43,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7308421] [2021-08-27 04:26:43,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:43,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:43,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:43,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:43,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7308421] [2021-08-27 04:26:43,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7308421] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:43,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:43,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 04:26:43,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365728566] [2021-08-27 04:26:43,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:26:43,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:43,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:26:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:26:43,585 INFO L87 Difference]: Start difference. First operand 55 states and 59 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) [2021-08-27 04:26:43,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:43,753 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2021-08-27 04:26:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 04:26:43,754 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 [2021-08-27 04:26:43,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:43,755 INFO L225 Difference]: With dead ends: 65 [2021-08-27 04:26:43,755 INFO L226 Difference]: Without dead ends: 65 [2021-08-27 04:26:43,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 97.4ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-27 04:26:43,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-08-27 04:26:43,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 45. [2021-08-27 04:26:43,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 41 states have internal predecessors, (46), 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) [2021-08-27 04:26:43,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-08-27 04:26:43,766 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 20 [2021-08-27 04:26:43,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:43,766 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-08-27 04:26:43,766 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) [2021-08-27 04:26:43,766 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-08-27 04:26:43,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 04:26:43,766 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:43,766 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:43,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-27 04:26:43,766 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 04:26:43,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:43,767 INFO L82 PathProgramCache]: Analyzing trace with hash -2071334378, now seen corresponding path program 1 times [2021-08-27 04:26:43,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:43,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039240718] [2021-08-27 04:26:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:43,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:43,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:43,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:43,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039240718] [2021-08-27 04:26:43,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039240718] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:26:43,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674114269] [2021-08-27 04:26:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:43,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:26:43,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:26:43,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 04:26:43,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 04:26:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:44,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-27 04:26:44,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 04:26:44,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 04:26:44,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-27 04:26:44,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-08-27 04:26:44,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-08-27 04:26:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:44,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674114269] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 04:26:44,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 04:26:44,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 12 [2021-08-27 04:26:44,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457375985] [2021-08-27 04:26:44,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 04:26:44,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:44,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 04:26:44,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-27 04:26:44,337 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:44,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:44,497 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2021-08-27 04:26:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 04:26:44,498 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-08-27 04:26:44,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:44,498 INFO L225 Difference]: With dead ends: 61 [2021-08-27 04:26:44,498 INFO L226 Difference]: Without dead ends: 61 [2021-08-27 04:26:44,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-08-27 04:26:44,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-08-27 04:26:44,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 48. [2021-08-27 04:26:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.225) internal successors, (49), 44 states have internal predecessors, (49), 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) [2021-08-27 04:26:44,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-08-27 04:26:44,505 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 21 [2021-08-27 04:26:44,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:44,508 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-08-27 04:26:44,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:44,509 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-08-27 04:26:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 04:26:44,510 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:44,511 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:44,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 04:26:44,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 04:26:44,721 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr17ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 04:26:44,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:44,721 INFO L82 PathProgramCache]: Analyzing trace with hash 213142458, now seen corresponding path program 1 times [2021-08-27 04:26:44,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:44,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775912879] [2021-08-27 04:26:44,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:44,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 04:26:44,730 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 04:26:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 04:26:44,752 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 04:26:44,752 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 04:26:44,753 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr17ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 04:26:44,754 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 04:26:44,754 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 04:26:44,754 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 04:26:44,754 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 04:26:44,754 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 04:26:44,754 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 04:26:44,754 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 04:26:44,755 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 04:26:44,755 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 04:26:44,755 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 04:26:44,755 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 04:26:44,755 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 04:26:44,755 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 04:26:44,755 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 04:26:44,755 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 04:26:44,756 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 04:26:44,756 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 04:26:44,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-27 04:26:44,759 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 04:26:44,764 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 04:26:44,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:26:44 BoogieIcfgContainer [2021-08-27 04:26:44,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 04:26:44,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 04:26:44,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 04:26:44,778 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 04:26:44,778 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:42" (3/4) ... [2021-08-27 04:26:44,779 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 04:26:44,782 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 04:26:44,810 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 04:26:44,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 04:26:44,812 INFO L168 Benchmark]: Toolchain (without parser) took 3654.88 ms. Allocated memory was 60.8 MB in the beginning and 119.5 MB in the end (delta: 58.7 MB). Free memory was 38.3 MB in the beginning and 56.6 MB in the end (delta: -18.3 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:44,812 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 43.2 MB in the end (delta: 43.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:26:44,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.56 ms. Allocated memory is still 60.8 MB. Free memory was 38.2 MB in the beginning and 38.2 MB in the end (delta: 34.9 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:44,813 INFO L168 Benchmark]: Boogie Preprocessor took 49.54 ms. Allocated memory is still 60.8 MB. Free memory was 38.2 MB in the beginning and 35.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:44,813 INFO L168 Benchmark]: RCFGBuilder took 570.13 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 35.5 MB in the beginning and 40.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:44,814 INFO L168 Benchmark]: TraceAbstraction took 2685.71 ms. Allocated memory was 73.4 MB in the beginning and 119.5 MB in the end (delta: 46.1 MB). Free memory was 40.1 MB in the beginning and 59.3 MB in the end (delta: -19.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:44,814 INFO L168 Benchmark]: Witness Printer took 32.65 ms. Allocated memory is still 119.5 MB. Free memory was 59.3 MB in the beginning and 56.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:44,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 43.2 MB in the end (delta: 43.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.56 ms. Allocated memory is still 60.8 MB. Free memory was 38.2 MB in the beginning and 38.2 MB in the end (delta: 34.9 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.54 ms. Allocated memory is still 60.8 MB. Free memory was 38.2 MB in the beginning and 35.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 570.13 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 35.5 MB in the beginning and 40.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2685.71 ms. Allocated memory was 73.4 MB in the beginning and 119.5 MB in the end (delta: 46.1 MB). Free memory was 40.1 MB in the beginning and 59.3 MB in the end (delta: -19.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. * Witness Printer took 32.65 ms. Allocated memory is still 119.5 MB. Free memory was 59.3 MB in the beginning and 56.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 531]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, p={-1:0}] [L536] a->h = 2 VAL [a={-1:0}, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L544] p->h = 2 VAL [a={-1:0}, p={-1:0}] [L545] p->n = 0 VAL [a={-1:0}, p={-1:0}] [L546] p = a VAL [a={-1:0}, p={-1:0}] [L547] COND TRUE p!=0 VAL [a={-1:0}, p={-1:0}] [L548] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=2] [L548] COND FALSE !(p->h != 2) [L551] EXPR p->n VAL [a={-1:0}, p={-1:0}, p->n={0:0}] [L551] p = p->n [L547] COND FALSE !(p!=0) VAL [a={-1:0}, p={0:0}] [L553] return 0; VAL [\result=0, a={-1:0}, p={0:0}] - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: 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: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 72 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 2629.0ms, OverallIterations: 10, TraceHistogramMax: 2, EmptinessCheckTime: 10.9ms, AutomataDifference: 991.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 241 SDtfs, 528 SDslu, 420 SDs, 0 SdLazy, 1054 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 572.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 446.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=6, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59.6ms AutomataMinimizationTime, 9 MinimizatonAttempts, 107 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.8ms SsaConstructionTime, 122.9ms SatisfiabilityAnalysisTime, 942.7ms InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 969 SizeOfPredicates, 8 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 6/8 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! [2021-08-27 04:26:44,842 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...