./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer --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 857285933727e0d6539ccc24abeb7a5fe95b45c6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-a4ecdab [2020-11-28 03:00:50,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:00:50,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:00:50,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:00:50,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:00:50,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:00:50,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:00:50,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:00:50,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:00:50,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:00:50,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:00:50,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:00:50,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:00:50,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:00:50,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:00:50,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:00:50,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:00:50,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:00:50,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:00:50,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:00:50,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:00:50,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:00:50,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:00:50,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:00:50,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:00:50,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:00:50,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:00:50,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:00:50,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:00:50,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:00:50,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:00:50,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:00:50,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:00:50,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:00:50,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:00:50,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:00:50,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:00:50,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:00:50,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:00:50,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:00:50,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:00:50,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-11-28 03:00:50,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:00:50,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:00:50,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:00:50,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:00:50,490 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:00:50,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:00:50,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:00:50,491 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:00:50,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:00:50,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:00:50,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:00:50,492 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:00:50,492 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:00:50,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:00:50,493 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:00:50,493 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:00:50,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:00:50,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:00:50,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:00:50,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:00:50,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:00:50,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:00:50,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:00:50,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:00:50,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:00:50,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:00:50,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:00:50,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 857285933727e0d6539ccc24abeb7a5fe95b45c6 [2020-11-28 03:00:50,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:00:50,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:00:50,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:00:50,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:00:50,881 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:00:50,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer/../../sv-benchmarks/c/list-properties/list-2.i [2020-11-28 03:00:50,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer/data/78f589d4e/fa24eca0131c46219a422241e5396248/FLAGdc26bdebf [2020-11-28 03:00:51,485 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:00:51,486 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/sv-benchmarks/c/list-properties/list-2.i [2020-11-28 03:00:51,498 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer/data/78f589d4e/fa24eca0131c46219a422241e5396248/FLAGdc26bdebf [2020-11-28 03:00:51,795 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer/data/78f589d4e/fa24eca0131c46219a422241e5396248 [2020-11-28 03:00:51,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:00:51,799 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:00:51,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:51,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:00:51,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:00:51,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:51" (1/1) ... [2020-11-28 03:00:51,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d614277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:51, skipping insertion in model container [2020-11-28 03:00:51,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:51" (1/1) ... [2020-11-28 03:00:51,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:00:51,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:00:52,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:52,313 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:00:52,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:52,410 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:00:52,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:52 WrapperNode [2020-11-28 03:00:52,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:52,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:00:52,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:00:52,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:00:52,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:52" (1/1) ... [2020-11-28 03:00:52,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:52" (1/1) ... [2020-11-28 03:00:52,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:52" (1/1) ... [2020-11-28 03:00:52,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:52" (1/1) ... [2020-11-28 03:00:52,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:52" (1/1) ... [2020-11-28 03:00:52,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:52" (1/1) ... [2020-11-28 03:00:52,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:52" (1/1) ... [2020-11-28 03:00:52,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:00:52,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:00:52,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:00:52,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:00:52,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:00:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:00:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:00:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:00:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:00:52,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:00:52,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:00:52,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:00:52,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:00:52,573 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-28 03:00:52,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:00:52,574 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:00:52,574 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:00:52,574 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 03:00:52,574 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 03:00:52,574 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:00:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:00:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:00:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:00:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:00:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:00:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:00:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:00:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:00:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:00:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:00:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:00:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:00:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:00:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:00:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:00:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:00:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:00:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:00:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:00:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:00:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:00:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:00:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:00:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:00:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:00:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:00:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:00:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:00:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:00:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:00:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:00:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:00:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:00:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:00:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:00:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:00:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:00:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:00:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:00:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:00:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:00:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:00:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:00:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:00:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:00:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:00:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:00:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:00:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:00:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:00:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:00:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:00:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:00:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:00:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:00:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:00:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:00:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:00:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:00:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:00:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:00:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:00:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:00:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:00:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:00:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:00:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:00:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:00:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:00:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:00:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:00:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:00:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:00:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:00:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:00:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:00:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:00:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:00:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:00:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:00:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:00:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:00:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:00:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:00:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:00:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:00:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:00:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:00:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:00:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:00:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:00:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:00:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:00:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:00:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:00:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:00:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:00:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:00:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:00:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:00:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:00:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:00:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:00:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:00:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:00:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:00:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:00:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:00:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-28 03:00:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:00:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:00:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:00:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:00:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:00:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:00:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:00:52,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:00:52,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:00:52,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:00:52,900 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-28 03:00:53,288 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:00:53,288 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-28 03:00:53,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:53 BoogieIcfgContainer [2020-11-28 03:00:53,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:00:53,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:00:53,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:00:53,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:00:53,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:00:51" (1/3) ... [2020-11-28 03:00:53,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddc30f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:53, skipping insertion in model container [2020-11-28 03:00:53,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:52" (2/3) ... [2020-11-28 03:00:53,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddc30f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:53, skipping insertion in model container [2020-11-28 03:00:53,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:53" (3/3) ... [2020-11-28 03:00:53,311 INFO L111 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-11-28 03:00:53,327 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:00:53,331 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-11-28 03:00:53,343 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-11-28 03:00:53,373 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:00:53,373 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:00:53,373 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:00:53,373 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:00:53,373 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:00:53,374 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:00:53,374 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:00:53,374 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:00:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-11-28 03:00:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:00:53,403 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:53,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:53,405 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:00:53,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:53,411 INFO L82 PathProgramCache]: Analyzing trace with hash -529419567, now seen corresponding path program 1 times [2020-11-28 03:00:53,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:53,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185599025] [2020-11-28 03:00:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:53,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:53,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185599025] [2020-11-28 03:00:53,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:53,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:53,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322891702] [2020-11-28 03:00:53,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:00:53,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:53,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:00:53,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:00:53,715 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 5 states. [2020-11-28 03:00:54,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:54,037 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-11-28 03:00:54,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:00:54,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:00:54,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:54,044 INFO L225 Difference]: With dead ends: 82 [2020-11-28 03:00:54,044 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 03:00:54,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:00:54,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 03:00:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-11-28 03:00:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-28 03:00:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-11-28 03:00:54,095 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 11 [2020-11-28 03:00:54,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:54,095 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-11-28 03:00:54,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:00:54,096 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-11-28 03:00:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:00:54,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:54,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:54,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:00:54,106 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:00:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:54,107 INFO L82 PathProgramCache]: Analyzing trace with hash -529419566, now seen corresponding path program 1 times [2020-11-28 03:00:54,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:54,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901008305] [2020-11-28 03:00:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:54,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:54,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901008305] [2020-11-28 03:00:54,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:54,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:54,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882603039] [2020-11-28 03:00:54,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:00:54,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:54,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:00:54,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:00:54,273 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 5 states. [2020-11-28 03:00:54,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:54,550 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-11-28 03:00:54,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:00:54,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:00:54,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:54,554 INFO L225 Difference]: With dead ends: 93 [2020-11-28 03:00:54,554 INFO L226 Difference]: Without dead ends: 93 [2020-11-28 03:00:54,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:00:54,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-28 03:00:54,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2020-11-28 03:00:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-28 03:00:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-11-28 03:00:54,577 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 11 [2020-11-28 03:00:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:54,577 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-11-28 03:00:54,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:00:54,578 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-11-28 03:00:54,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:00:54,579 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:54,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:54,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:00:54,580 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:00:54,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:54,584 INFO L82 PathProgramCache]: Analyzing trace with hash 745437086, now seen corresponding path program 1 times [2020-11-28 03:00:54,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:54,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529773181] [2020-11-28 03:00:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:54,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:54,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529773181] [2020-11-28 03:00:54,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:54,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:00:54,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090829498] [2020-11-28 03:00:54,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:00:54,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:54,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:00:54,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:00:54,769 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 7 states. [2020-11-28 03:00:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:55,077 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-11-28 03:00:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:00:55,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 03:00:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:55,079 INFO L225 Difference]: With dead ends: 119 [2020-11-28 03:00:55,079 INFO L226 Difference]: Without dead ends: 119 [2020-11-28 03:00:55,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:00:55,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-28 03:00:55,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 86. [2020-11-28 03:00:55,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-28 03:00:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-11-28 03:00:55,095 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 19 [2020-11-28 03:00:55,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:55,096 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-11-28 03:00:55,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:00:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-11-28 03:00:55,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:00:55,097 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:55,097 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:55,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:00:55,099 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:00:55,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:55,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276100, now seen corresponding path program 1 times [2020-11-28 03:00:55,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:55,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013644456] [2020-11-28 03:00:55,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:55,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:55,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013644456] [2020-11-28 03:00:55,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:55,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:00:55,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817193446] [2020-11-28 03:00:55,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:00:55,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:55,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:00:55,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:00:55,265 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 7 states. [2020-11-28 03:00:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:55,691 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-11-28 03:00:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:00:55,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 03:00:55,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:55,693 INFO L225 Difference]: With dead ends: 110 [2020-11-28 03:00:55,693 INFO L226 Difference]: Without dead ends: 110 [2020-11-28 03:00:55,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:00:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-28 03:00:55,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 89. [2020-11-28 03:00:55,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-28 03:00:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-11-28 03:00:55,702 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 19 [2020-11-28 03:00:55,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:55,702 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-11-28 03:00:55,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:00:55,702 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-11-28 03:00:55,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:00:55,703 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:55,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:55,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:00:55,704 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:00:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:55,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276101, now seen corresponding path program 1 times [2020-11-28 03:00:55,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:55,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981007507] [2020-11-28 03:00:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:55,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:55,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981007507] [2020-11-28 03:00:55,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:55,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:00:55,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768772386] [2020-11-28 03:00:55,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:00:55,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:55,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:00:55,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:00:55,837 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 7 states. [2020-11-28 03:00:56,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:56,277 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2020-11-28 03:00:56,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:00:56,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 03:00:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:56,279 INFO L225 Difference]: With dead ends: 111 [2020-11-28 03:00:56,279 INFO L226 Difference]: Without dead ends: 111 [2020-11-28 03:00:56,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:00:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-28 03:00:56,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2020-11-28 03:00:56,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-28 03:00:56,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-11-28 03:00:56,286 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 19 [2020-11-28 03:00:56,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:56,286 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-11-28 03:00:56,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:00:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-11-28 03:00:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:00:56,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:56,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:56,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:00:56,288 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:00:56,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:56,289 INFO L82 PathProgramCache]: Analyzing trace with hash -942076661, now seen corresponding path program 1 times [2020-11-28 03:00:56,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:56,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404064595] [2020-11-28 03:00:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:56,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:56,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404064595] [2020-11-28 03:00:56,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:56,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:00:56,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340714071] [2020-11-28 03:00:56,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:00:56,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:56,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:00:56,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:00:56,422 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-11-28 03:00:56,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:56,715 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2020-11-28 03:00:56,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:00:56,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-28 03:00:56,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:56,717 INFO L225 Difference]: With dead ends: 107 [2020-11-28 03:00:56,717 INFO L226 Difference]: Without dead ends: 107 [2020-11-28 03:00:56,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:00:56,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-28 03:00:56,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2020-11-28 03:00:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-28 03:00:56,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-11-28 03:00:56,724 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 21 [2020-11-28 03:00:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:56,725 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-11-28 03:00:56,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:00:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-11-28 03:00:56,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:00:56,726 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:56,726 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:56,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:00:56,727 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:00:56,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:56,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890890, now seen corresponding path program 1 times [2020-11-28 03:00:56,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:56,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167785424] [2020-11-28 03:00:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:56,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:56,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167785424] [2020-11-28 03:00:56,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:56,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:00:56,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011161454] [2020-11-28 03:00:56,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:00:56,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:56,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:00:56,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:00:56,859 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2020-11-28 03:00:57,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:57,256 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-11-28 03:00:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:00:57,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-28 03:00:57,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:57,259 INFO L225 Difference]: With dead ends: 91 [2020-11-28 03:00:57,259 INFO L226 Difference]: Without dead ends: 91 [2020-11-28 03:00:57,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:00:57,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-28 03:00:57,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-11-28 03:00:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-28 03:00:57,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-11-28 03:00:57,265 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 21 [2020-11-28 03:00:57,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:57,266 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-11-28 03:00:57,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:00:57,266 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-11-28 03:00:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:00:57,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:57,267 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:57,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:00:57,267 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:00:57,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:57,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890889, now seen corresponding path program 1 times [2020-11-28 03:00:57,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:57,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921238623] [2020-11-28 03:00:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:57,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:57,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921238623] [2020-11-28 03:00:57,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:57,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:00:57,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585180495] [2020-11-28 03:00:57,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:00:57,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:57,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:00:57,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:00:57,465 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-11-28 03:00:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:57,905 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2020-11-28 03:00:57,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:00:57,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-28 03:00:57,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:57,907 INFO L225 Difference]: With dead ends: 88 [2020-11-28 03:00:57,907 INFO L226 Difference]: Without dead ends: 88 [2020-11-28 03:00:57,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:00:57,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-28 03:00:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2020-11-28 03:00:57,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-28 03:00:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-11-28 03:00:57,917 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 21 [2020-11-28 03:00:57,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:57,918 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-11-28 03:00:57,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:00:57,918 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-11-28 03:00:57,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:00:57,919 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:57,919 INFO L422 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, 1] [2020-11-28 03:00:57,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:00:57,919 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:00:57,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:57,920 INFO L82 PathProgramCache]: Analyzing trace with hash 851943190, now seen corresponding path program 1 times [2020-11-28 03:00:57,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:57,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013330482] [2020-11-28 03:00:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:58,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:00:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:58,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013330482] [2020-11-28 03:00:58,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:58,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:00:58,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023522721] [2020-11-28 03:00:58,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:00:58,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:58,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:00:58,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:00:58,010 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 7 states. [2020-11-28 03:00:58,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:58,273 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-11-28 03:00:58,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:00:58,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-28 03:00:58,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:58,274 INFO L225 Difference]: With dead ends: 92 [2020-11-28 03:00:58,274 INFO L226 Difference]: Without dead ends: 92 [2020-11-28 03:00:58,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:00:58,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-28 03:00:58,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 70. [2020-11-28 03:00:58,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-28 03:00:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-11-28 03:00:58,278 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2020-11-28 03:00:58,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:58,278 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-11-28 03:00:58,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:00:58,278 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-11-28 03:00:58,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:00:58,279 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:58,279 INFO L422 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] [2020-11-28 03:00:58,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:00:58,279 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-28 03:00:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:58,280 INFO L82 PathProgramCache]: Analyzing trace with hash 858770483, now seen corresponding path program 1 times [2020-11-28 03:00:58,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:58,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283082336] [2020-11-28 03:00:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:58,293 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:58,304 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:58,330 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:58,330 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:00:58,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:00:58,343 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-28 03:00:58,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:00:58 BoogieIcfgContainer [2020-11-28 03:00:58,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:00:58,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:00:58,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:00:58,358 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:00:58,359 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:53" (3/4) ... [2020-11-28 03:00:58,361 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:00:58,367 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-28 03:00:58,426 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d4c480bf-f150-4259-aa10-afee407c074f/bin/uautomizer/witness.graphml [2020-11-28 03:00:58,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:00:58,429 INFO L168 Benchmark]: Toolchain (without parser) took 6628.70 ms. Allocated memory was 98.6 MB in the beginning and 146.8 MB in the end (delta: 48.2 MB). Free memory was 64.9 MB in the beginning and 96.1 MB in the end (delta: -31.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:58,429 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 75.5 MB. Free memory was 55.6 MB in the beginning and 55.6 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:58,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.88 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 64.4 MB in the end (delta: 222.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:58,431 INFO L168 Benchmark]: Boogie Preprocessor took 94.67 ms. Allocated memory is still 98.6 MB. Free memory was 64.4 MB in the beginning and 61.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:58,431 INFO L168 Benchmark]: RCFGBuilder took 783.97 ms. Allocated memory is still 98.6 MB. Free memory was 61.7 MB in the beginning and 46.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:58,432 INFO L168 Benchmark]: TraceAbstraction took 5061.52 ms. Allocated memory was 98.6 MB in the beginning and 146.8 MB in the end (delta: 48.2 MB). Free memory was 46.0 MB in the beginning and 98.2 MB in the end (delta: -52.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:58,438 INFO L168 Benchmark]: Witness Printer took 68.60 ms. Allocated memory is still 146.8 MB. Free memory was 98.2 MB in the beginning and 96.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:58,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 75.5 MB. Free memory was 55.6 MB in the beginning and 55.6 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 612.88 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 64.4 MB in the end (delta: 222.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.67 ms. Allocated memory is still 98.6 MB. Free memory was 64.4 MB in the beginning and 61.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 783.97 ms. Allocated memory is still 98.6 MB. Free memory was 61.7 MB in the beginning and 46.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5061.52 ms. Allocated memory was 98.6 MB in the beginning and 146.8 MB in the end (delta: 48.2 MB). Free memory was 46.0 MB in the beginning and 98.2 MB in the end (delta: -52.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 68.60 ms. Allocated memory is still 146.8 MB. Free memory was 98.2 MB in the beginning and 96.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.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: - 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)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L551] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L552] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L552] COND FALSE !(p->h == 2) [L554] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 94 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.9s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 409 SDtfs, 677 SDslu, 911 SDs, 0 SdLazy, 1850 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 178 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 14484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 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! Received shutdown request...