./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/simple_built_from_end.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_built_from_end.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 279a162aa90145a7316b3266460570a8e3cad8e6 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_built_from_end.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 279a162aa90145a7316b3266460570a8e3cad8e6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:03:55,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:03:55,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:03:55,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:03:55,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:03:55,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:03:55,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:03:55,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:03:55,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:03:55,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:03:55,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:03:55,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:03:55,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:03:55,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:03:55,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:03:55,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:03:55,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:03:55,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:03:55,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:03:55,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:03:55,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:03:55,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:03:55,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:03:55,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:03:55,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:03:55,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:03:55,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:03:55,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:03:55,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:03:55,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:03:55,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:03:55,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:03:55,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:03:55,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:03:55,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:03:55,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:03:55,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:03:55,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:03:55,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:03:55,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:03:55,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:03:55,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-28 03:03:55,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:03:55,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:03:55,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:03:55,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:03:55,480 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:03:55,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:03:55,481 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:03:55,482 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:03:55,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:03:55,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:03:55,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:03:55,483 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:03:55,484 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:03:55,484 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:03:55,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:03:55,485 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:03:55,485 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:03:55,486 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:03:55,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:03:55,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:03:55,487 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:03:55,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:03:55,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:03:55,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:03:55,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:03:55,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:03:55,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:03:55,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:03:55,490 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_f65aa6c9-672c-4920-9604-e87a634b5085/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 279a162aa90145a7316b3266460570a8e3cad8e6 [2020-11-28 03:03:55,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:03:55,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:03:55,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:03:55,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:03:55,767 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:03:55,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/../../sv-benchmarks/c/list-properties/simple_built_from_end.i [2020-11-28 03:03:55,839 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/data/16bd52cf8/0c81c7058ba049d0aec8ba521846f047/FLAG427a976bd [2020-11-28 03:03:56,372 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:03:56,377 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/sv-benchmarks/c/list-properties/simple_built_from_end.i [2020-11-28 03:03:56,403 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/data/16bd52cf8/0c81c7058ba049d0aec8ba521846f047/FLAG427a976bd [2020-11-28 03:03:56,641 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/data/16bd52cf8/0c81c7058ba049d0aec8ba521846f047 [2020-11-28 03:03:56,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:03:56,645 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:03:56,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:03:56,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:03:56,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:03:56,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:56" (1/1) ... [2020-11-28 03:03:56,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9bd2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:56, skipping insertion in model container [2020-11-28 03:03:56,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:56" (1/1) ... [2020-11-28 03:03:56,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:03:56,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:03:57,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:03:57,133 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:03:57,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:03:57,238 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:03:57,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:57 WrapperNode [2020-11-28 03:03:57,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:03:57,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:03:57,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:03:57,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:03:57,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:57" (1/1) ... [2020-11-28 03:03:57,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:57" (1/1) ... [2020-11-28 03:03:57,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:57" (1/1) ... [2020-11-28 03:03:57,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:57" (1/1) ... [2020-11-28 03:03:57,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:57" (1/1) ... [2020-11-28 03:03:57,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:57" (1/1) ... [2020-11-28 03:03:57,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:57" (1/1) ... [2020-11-28 03:03:57,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:03:57,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:03:57,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:03:57,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:03:57,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/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 03:03:57,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:03:57,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:03:57,378 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:03:57,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:03:57,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:03:57,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:03:57,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:03:57,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:03:57,379 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-28 03:03:57,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:03:57,379 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:03:57,379 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:03:57,379 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 03:03:57,379 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 03:03:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:03:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:03:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:03:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:03:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:03:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:03:57,380 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:03:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:03:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:03:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:03:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:03:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:03:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:03:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:03:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:03:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:03:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:03:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:03:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:03:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:03:57,382 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:03:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:03:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:03:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:03:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:03:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:03:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:03:57,383 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:03:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:03:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:03:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:03:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:03:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:03:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:03:57,384 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:03:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:03:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:03:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:03:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:03:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:03:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:03:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:03:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:03:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:03:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:03:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:03:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:03:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:03:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:03:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:03:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:03:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:03:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:03:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:03:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:03:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:03:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:03:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:03:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:03:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:03:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:03:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:03:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:03:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:03:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:03:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:03:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:03:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:03:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:03:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:03:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:03:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:03:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:03:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:03:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:03:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:03:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:03:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:03:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:03:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:03:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:03:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:03:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:03:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:03:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:03:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:03:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:03:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:03:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:03:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:03:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:03:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:03:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:03:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:03:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:03:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:03:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:03:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:03:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:03:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:03:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:03:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:03:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:03:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:03:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:03:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:03:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:03:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:03:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:03:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-28 03:03:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:03:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:03:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:03:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:03:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:03:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:03:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:03:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:03:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:03:57,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:03:57,751 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-28 03:03:57,890 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:03:57,891 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-28 03:03:57,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:57 BoogieIcfgContainer [2020-11-28 03:03:57,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:03:57,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:03:57,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:03:57,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:03:57,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:03:56" (1/3) ... [2020-11-28 03:03:57,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da28a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:57, skipping insertion in model container [2020-11-28 03:03:57,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:57" (2/3) ... [2020-11-28 03:03:57,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da28a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:57, skipping insertion in model container [2020-11-28 03:03:57,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:57" (3/3) ... [2020-11-28 03:03:57,901 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2020-11-28 03:03:57,911 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:03:57,916 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-11-28 03:03:57,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-11-28 03:03:57,945 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:03:57,945 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:03:57,945 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:03:57,945 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:03:57,945 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:03:57,946 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:03:57,946 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:03:57,946 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:03:57,958 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-28 03:03:57,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:03:57,965 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:57,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:57,966 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:03:57,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:57,972 INFO L82 PathProgramCache]: Analyzing trace with hash 691471212, now seen corresponding path program 1 times [2020-11-28 03:03:57,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:57,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282904093] [2020-11-28 03:03:57,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:58,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:58,180 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 03:03:58,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282904093] [2020-11-28 03:03:58,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:58,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:03:58,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222728593] [2020-11-28 03:03:58,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:03:58,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:58,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:03:58,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:03:58,228 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-11-28 03:03:58,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:58,372 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-11-28 03:03:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:03:58,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 03:03:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:58,382 INFO L225 Difference]: With dead ends: 51 [2020-11-28 03:03:58,382 INFO L226 Difference]: Without dead ends: 43 [2020-11-28 03:03:58,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:03:58,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-28 03:03:58,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-11-28 03:03:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-28 03:03:58,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-11-28 03:03:58,429 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 9 [2020-11-28 03:03:58,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:58,429 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-11-28 03:03:58,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:03:58,429 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-11-28 03:03:58,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:03:58,430 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:58,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:58,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:03:58,432 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:03:58,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:58,433 INFO L82 PathProgramCache]: Analyzing trace with hash -39877821, now seen corresponding path program 1 times [2020-11-28 03:03:58,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:58,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493993023] [2020-11-28 03:03:58,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:58,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:58,572 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 03:03:58,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493993023] [2020-11-28 03:03:58,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:58,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:03:58,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353979357] [2020-11-28 03:03:58,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:03:58,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:58,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:03:58,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:03:58,576 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 4 states. [2020-11-28 03:03:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:58,704 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-11-28 03:03:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:03:58,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:03:58,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:58,705 INFO L225 Difference]: With dead ends: 41 [2020-11-28 03:03:58,706 INFO L226 Difference]: Without dead ends: 41 [2020-11-28 03:03:58,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:03:58,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-28 03:03:58,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-11-28 03:03:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 03:03:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-11-28 03:03:58,711 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 10 [2020-11-28 03:03:58,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:58,712 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-11-28 03:03:58,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:03:58,712 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-11-28 03:03:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:03:58,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:58,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:58,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:03:58,713 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:03:58,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:58,714 INFO L82 PathProgramCache]: Analyzing trace with hash -39877820, now seen corresponding path program 1 times [2020-11-28 03:03:58,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:58,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852685776] [2020-11-28 03:03:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:58,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:58,805 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 03:03:58,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852685776] [2020-11-28 03:03:58,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:58,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:03:58,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252934459] [2020-11-28 03:03:58,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:03:58,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:58,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:03:58,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:03:58,808 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2020-11-28 03:03:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:58,921 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-11-28 03:03:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:03:58,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:03:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:58,923 INFO L225 Difference]: With dead ends: 39 [2020-11-28 03:03:58,923 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 03:03:58,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:03:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 03:03:58,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2020-11-28 03:03:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 03:03:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-11-28 03:03:58,928 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 10 [2020-11-28 03:03:58,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:58,929 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-11-28 03:03:58,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:03:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-11-28 03:03:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:03:58,930 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:58,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:58,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:03:58,930 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:03:58,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:58,931 INFO L82 PathProgramCache]: Analyzing trace with hash -39879136, now seen corresponding path program 1 times [2020-11-28 03:03:58,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:58,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908388783] [2020-11-28 03:03:58,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:58,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:58,994 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 03:03:58,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908388783] [2020-11-28 03:03:58,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:58,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:03:58,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472540806] [2020-11-28 03:03:58,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:03:58,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:58,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:03:58,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:03:58,997 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 4 states. [2020-11-28 03:03:59,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:59,092 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-11-28 03:03:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:03:59,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:03:59,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:59,093 INFO L225 Difference]: With dead ends: 34 [2020-11-28 03:03:59,093 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 03:03:59,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:59,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 03:03:59,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-11-28 03:03:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 03:03:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-11-28 03:03:59,098 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 10 [2020-11-28 03:03:59,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:59,098 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-11-28 03:03:59,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:03:59,098 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-11-28 03:03:59,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:03:59,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:59,099 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:59,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:03:59,099 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:03:59,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:59,100 INFO L82 PathProgramCache]: Analyzing trace with hash -905845953, now seen corresponding path program 1 times [2020-11-28 03:03:59,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:59,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349838279] [2020-11-28 03:03:59,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:59,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:59,206 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 03:03:59,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349838279] [2020-11-28 03:03:59,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:59,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:03:59,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340383393] [2020-11-28 03:03:59,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:03:59,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:59,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:03:59,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:59,216 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 5 states. [2020-11-28 03:03:59,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:59,332 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-11-28 03:03:59,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:03:59,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-28 03:03:59,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:59,333 INFO L225 Difference]: With dead ends: 43 [2020-11-28 03:03:59,340 INFO L226 Difference]: Without dead ends: 43 [2020-11-28 03:03:59,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 03:03:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-28 03:03:59,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2020-11-28 03:03:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:03:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-28 03:03:59,344 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 16 [2020-11-28 03:03:59,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:59,344 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-28 03:03:59,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:03:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-28 03:03:59,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:03:59,345 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:59,345 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:59,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:03:59,346 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:03:59,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:59,346 INFO L82 PathProgramCache]: Analyzing trace with hash -905845910, now seen corresponding path program 1 times [2020-11-28 03:03:59,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:59,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473834111] [2020-11-28 03:03:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:59,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:59,435 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 03:03:59,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473834111] [2020-11-28 03:03:59,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:59,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:03:59,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271205255] [2020-11-28 03:03:59,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:03:59,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:59,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:03:59,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:59,441 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 5 states. [2020-11-28 03:03:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:59,559 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-11-28 03:03:59,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:03:59,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-28 03:03:59,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:59,560 INFO L225 Difference]: With dead ends: 35 [2020-11-28 03:03:59,560 INFO L226 Difference]: Without dead ends: 35 [2020-11-28 03:03:59,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 03:03:59,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-28 03:03:59,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2020-11-28 03:03:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:03:59,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-11-28 03:03:59,566 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2020-11-28 03:03:59,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:59,567 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-11-28 03:03:59,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:03:59,567 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-11-28 03:03:59,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:03:59,568 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:59,568 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:59,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:03:59,568 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:03:59,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:59,569 INFO L82 PathProgramCache]: Analyzing trace with hash -905845909, now seen corresponding path program 1 times [2020-11-28 03:03:59,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:59,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403715986] [2020-11-28 03:03:59,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:59,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:59,653 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 03:03:59,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403715986] [2020-11-28 03:03:59,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:59,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:03:59,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925778822] [2020-11-28 03:03:59,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:03:59,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:59,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:03:59,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:59,656 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2020-11-28 03:03:59,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:59,776 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-11-28 03:03:59,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:03:59,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-28 03:03:59,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:59,777 INFO L225 Difference]: With dead ends: 38 [2020-11-28 03:03:59,777 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 03:03:59,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 03:03:59,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 03:03:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2020-11-28 03:03:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 03:03:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-11-28 03:03:59,781 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 16 [2020-11-28 03:03:59,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:59,781 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-11-28 03:03:59,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:03:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-11-28 03:03:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:03:59,782 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:59,782 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:59,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:03:59,782 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:03:59,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:59,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1715336483, now seen corresponding path program 1 times [2020-11-28 03:03:59,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:59,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733956702] [2020-11-28 03:03:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:59,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-28 03:03:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:59,908 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 03:03:59,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733956702] [2020-11-28 03:03:59,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:59,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:03:59,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422156962] [2020-11-28 03:03:59,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:03:59,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:59,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:03:59,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:03:59,914 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 6 states. [2020-11-28 03:04:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:00,032 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-11-28 03:04:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:04:00,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-28 03:04:00,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:00,033 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:04:00,033 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 03:04:00,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:04:00,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 03:04:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-11-28 03:04:00,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 03:04:00,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-11-28 03:04:00,037 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 20 [2020-11-28 03:04:00,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:00,037 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-11-28 03:04:00,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:04:00,038 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-11-28 03:04:00,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:04:00,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:00,038 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 03:04:00,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:04:00,039 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:04:00,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:00,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1639972725, now seen corresponding path program 1 times [2020-11-28 03:04:00,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:00,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356583661] [2020-11-28 03:04:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:00,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:00,068 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:00,099 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:04:00,099 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:04:00,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:04:00,125 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-28 03:04:00,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:04:00 BoogieIcfgContainer [2020-11-28 03:04:00,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:04:00,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:04:00,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:04:00,148 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:04:00,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:57" (3/4) ... [2020-11-28 03:04:00,151 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:04:00,151 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:04:00,153 INFO L168 Benchmark]: Toolchain (without parser) took 3507.19 ms. Allocated memory was 81.8 MB in the beginning and 159.4 MB in the end (delta: 77.6 MB). Free memory was 49.1 MB in the beginning and 53.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 73.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:00,153 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 81.8 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 22.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:00,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.98 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 48.9 MB in the beginning and 73.9 MB in the end (delta: -24.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:00,155 INFO L168 Benchmark]: Boogie Preprocessor took 55.40 ms. Allocated memory is still 109.1 MB. Free memory was 73.9 MB in the beginning and 71.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:00,155 INFO L168 Benchmark]: RCFGBuilder took 597.21 ms. Allocated memory is still 109.1 MB. Free memory was 71.1 MB in the beginning and 58.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:00,156 INFO L168 Benchmark]: TraceAbstraction took 2253.58 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 57.8 MB in the beginning and 53.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 54.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:00,156 INFO L168 Benchmark]: Witness Printer took 2.91 ms. Allocated memory is still 159.4 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:00,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 81.8 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 22.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 590.98 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 48.9 MB in the beginning and 73.9 MB in the end (delta: -24.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.40 ms. Allocated memory is still 109.1 MB. Free memory was 73.9 MB in the beginning and 71.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 597.21 ms. Allocated memory is still 109.1 MB. Free memory was 71.1 MB in the beginning and 58.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2253.58 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 57.8 MB in the beginning and 53.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 54.8 MB. Max. memory is 16.1 GB. * Witness Printer took 2.91 ms. Allocated memory is still 159.4 MB. Free memory is still 53.3 MB. There was no memory consumed. 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) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List t; [L533] List p = 0; VAL [p={0:0}] [L534] COND TRUE __VERIFIER_nondet_int() [L535] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L536] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L537] t->h = 1 VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L538] t->n = p VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L539] p = t VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L534] COND FALSE !(__VERIFIER_nondet_int()) [L541] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L542] EXPR p->h VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-1:0}] [L542] COND FALSE !(p->h != 1) [L545] EXPR p->n VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={0:0}, t={-1:0}] [L545] p = p->n [L541] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 56 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 175 SDtfs, 224 SDslu, 98 SDs, 0 SdLazy, 458 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 47 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 6454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:04:02,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:04:02,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:04:02,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:04:02,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:04:02,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:04:02,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:04:02,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:04:02,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:04:02,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:04:02,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:04:02,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:04:02,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:04:02,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:04:02,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:04:02,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:04:02,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:04:02,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:04:02,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:04:02,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:04:02,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:04:02,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:04:02,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:04:02,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:04:02,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:04:02,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:04:02,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:04:02,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:04:02,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:04:02,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:04:02,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:04:02,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:04:02,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:04:02,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:04:02,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:04:02,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:04:02,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:04:02,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:04:02,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:04:02,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:04:02,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:04:02,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-28 03:04:02,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:04:02,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:04:02,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:04:02,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:04:02,772 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:04:02,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:04:02,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:04:02,773 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:04:02,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:04:02,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:04:02,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:04:02,774 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 03:04:02,774 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 03:04:02,774 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 03:04:02,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:04:02,775 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 03:04:02,775 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:04:02,775 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:04:02,775 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:04:02,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:04:02,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:04:02,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:04:02,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:04:02,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:04:02,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:04:02,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:04:02,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:04:02,777 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:04:02,778 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:04:02,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:04:02,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:04:02,778 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_f65aa6c9-672c-4920-9604-e87a634b5085/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 279a162aa90145a7316b3266460570a8e3cad8e6 [2020-11-28 03:04:03,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:04:03,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:04:03,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:04:03,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:04:03,228 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:04:03,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/../../sv-benchmarks/c/list-properties/simple_built_from_end.i [2020-11-28 03:04:03,296 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/data/8b69c7563/8989fe3f4ac543f9ac2dc725db5d9f71/FLAG143ba9075 [2020-11-28 03:04:03,871 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:04:03,872 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/sv-benchmarks/c/list-properties/simple_built_from_end.i [2020-11-28 03:04:03,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/data/8b69c7563/8989fe3f4ac543f9ac2dc725db5d9f71/FLAG143ba9075 [2020-11-28 03:04:04,138 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/data/8b69c7563/8989fe3f4ac543f9ac2dc725db5d9f71 [2020-11-28 03:04:04,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:04:04,142 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-28 03:04:04,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:04,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:04:04,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:04:04,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:04" (1/1) ... [2020-11-28 03:04:04,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b9b4519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:04, skipping insertion in model container [2020-11-28 03:04:04,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:04" (1/1) ... [2020-11-28 03:04:04,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:04:04,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:04:04,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:04,475 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:04:04,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:04,643 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:04:04,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:04 WrapperNode [2020-11-28 03:04:04,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:04,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:04:04,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:04:04,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:04:04,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:04" (1/1) ... [2020-11-28 03:04:04,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:04" (1/1) ... [2020-11-28 03:04:04,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:04" (1/1) ... [2020-11-28 03:04:04,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:04" (1/1) ... [2020-11-28 03:04:04,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:04" (1/1) ... [2020-11-28 03:04:04,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:04" (1/1) ... [2020-11-28 03:04:04,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:04" (1/1) ... [2020-11-28 03:04:04,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:04:04,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:04:04,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:04:04,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:04:04,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:04:04,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-28 03:04:04,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:04:04,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-11-28 03:04:04,846 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 03:04:04,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-28 03:04:04,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-28 03:04:04,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-28 03:04:04,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-28 03:04:04,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-28 03:04:04,849 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-28 03:04:04,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-28 03:04:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-28 03:04:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-28 03:04:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-28 03:04:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-28 03:04:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 03:04:04,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:04:04,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-28 03:04:04,851 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-28 03:04:04,851 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-28 03:04:04,851 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-28 03:04:04,851 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-28 03:04:04,851 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-28 03:04:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-28 03:04:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-28 03:04:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-28 03:04:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-28 03:04:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-28 03:04:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-28 03:04:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-28 03:04:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-28 03:04:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-28 03:04:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-28 03:04:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-28 03:04:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-28 03:04:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-28 03:04:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-28 03:04:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-28 03:04:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-28 03:04:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-28 03:04:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-28 03:04:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-28 03:04:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-28 03:04:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-28 03:04:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-28 03:04:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-28 03:04:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-28 03:04:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-28 03:04:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-28 03:04:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-28 03:04:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-28 03:04:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-28 03:04:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-28 03:04:04,857 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-28 03:04:04,857 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-28 03:04:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-28 03:04:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-28 03:04:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-28 03:04:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-28 03:04:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-28 03:04:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-28 03:04:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-28 03:04:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-28 03:04:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-28 03:04:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-28 03:04:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-28 03:04:04,860 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-28 03:04:04,860 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-28 03:04:04,861 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-28 03:04:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-28 03:04:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-28 03:04:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-28 03:04:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-28 03:04:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-28 03:04:04,862 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-28 03:04:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-28 03:04:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-28 03:04:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-28 03:04:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-28 03:04:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-28 03:04:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-28 03:04:04,863 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-28 03:04:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-28 03:04:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-28 03:04:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-28 03:04:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-28 03:04:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-28 03:04:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-28 03:04:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-28 03:04:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-28 03:04:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-28 03:04:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-28 03:04:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-28 03:04:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-28 03:04:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-28 03:04:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-28 03:04:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-28 03:04:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-28 03:04:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-28 03:04:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-28 03:04:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-28 03:04:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-28 03:04:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-28 03:04:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-28 03:04:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-28 03:04:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-28 03:04:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-28 03:04:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-28 03:04:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-28 03:04:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-28 03:04:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-28 03:04:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-28 03:04:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-28 03:04:04,869 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-28 03:04:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-28 03:04:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-28 03:04:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-28 03:04:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-28 03:04:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-28 03:04:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-28 03:04:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-28 03:04:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-28 03:04:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-28 03:04:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-28 03:04:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-28 03:04:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-28 03:04:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:04:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:04:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:04:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:04:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:04:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-28 03:04:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:04:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:04:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-11-28 03:04:04,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-28 03:04:04,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-28 03:04:04,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:04:05,333 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-28 03:04:05,610 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:04:05,610 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-28 03:04:05,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:05 BoogieIcfgContainer [2020-11-28 03:04:05,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:04:05,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:04:05,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:04:05,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:04:05,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:04:04" (1/3) ... [2020-11-28 03:04:05,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247c5d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:05, skipping insertion in model container [2020-11-28 03:04:05,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:04" (2/3) ... [2020-11-28 03:04:05,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247c5d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:05, skipping insertion in model container [2020-11-28 03:04:05,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:05" (3/3) ... [2020-11-28 03:04:05,625 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2020-11-28 03:04:05,639 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:04:05,643 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-11-28 03:04:05,655 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-11-28 03:04:05,683 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:04:05,684 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 03:04:05,684 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:04:05,684 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:04:05,684 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:04:05,684 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:04:05,684 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:04:05,684 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:04:05,699 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-28 03:04:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:04:05,709 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:05,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:05,710 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:04:05,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:05,717 INFO L82 PathProgramCache]: Analyzing trace with hash -251734950, now seen corresponding path program 1 times [2020-11-28 03:04:05,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:05,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034223349] [2020-11-28 03:04:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 03:04:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:05,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:04:05,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:05,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:04:05,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:05,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034223349] [2020-11-28 03:04:05,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:05,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:04:05,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753112380] [2020-11-28 03:04:05,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:04:05,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:04:05,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:04:05,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:04:06,000 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-11-28 03:04:06,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:06,015 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-11-28 03:04:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:04:06,016 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-28 03:04:06,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:06,024 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:04:06,024 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 03:04:06,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:04:06,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 03:04:06,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-28 03:04:06,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:04:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-28 03:04:06,057 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 9 [2020-11-28 03:04:06,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:06,057 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-28 03:04:06,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:04:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-28 03:04:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:04:06,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:06,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:06,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:04:06,274 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:04:06,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:06,275 INFO L82 PathProgramCache]: Analyzing trace with hash -251735570, now seen corresponding path program 1 times [2020-11-28 03:04:06,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:06,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308347118] [2020-11-28 03:04:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 03:04:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:06,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:06,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:06,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:04:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:06,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308347118] [2020-11-28 03:04:06,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:06,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:04:06,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638551663] [2020-11-28 03:04:06,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:04:06,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:04:06,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:04:06,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:06,457 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 3 states. [2020-11-28 03:04:06,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:06,550 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-11-28 03:04:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:04:06,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 03:04:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:06,553 INFO L225 Difference]: With dead ends: 42 [2020-11-28 03:04:06,554 INFO L226 Difference]: Without dead ends: 41 [2020-11-28 03:04:06,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:06,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-28 03:04:06,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-11-28 03:04:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 03:04:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-11-28 03:04:06,563 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 9 [2020-11-28 03:04:06,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:06,563 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-11-28 03:04:06,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:04:06,563 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-11-28 03:04:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:04:06,564 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:06,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:06,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:04:06,782 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:04:06,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:06,782 INFO L82 PathProgramCache]: Analyzing trace with hash -251735527, now seen corresponding path program 1 times [2020-11-28 03:04:06,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:06,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71359105] [2020-11-28 03:04:06,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 03:04:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:06,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:04:06,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:06,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:06,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:04:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:06,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71359105] [2020-11-28 03:04:06,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:06,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:04:06,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41799252] [2020-11-28 03:04:06,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:04:06,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:04:06,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:04:06,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:06,955 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 3 states. [2020-11-28 03:04:07,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:07,016 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-11-28 03:04:07,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:04:07,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 03:04:07,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:07,019 INFO L225 Difference]: With dead ends: 40 [2020-11-28 03:04:07,019 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 03:04:07,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:07,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 03:04:07,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2020-11-28 03:04:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:04:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-11-28 03:04:07,024 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 9 [2020-11-28 03:04:07,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:07,024 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-11-28 03:04:07,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:04:07,024 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-11-28 03:04:07,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:04:07,025 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:07,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:07,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:04:07,239 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:04:07,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:07,240 INFO L82 PathProgramCache]: Analyzing trace with hash -251734212, now seen corresponding path program 1 times [2020-11-28 03:04:07,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:07,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444272807] [2020-11-28 03:04:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 03:04:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:07,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:04:07,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:07,493 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:04:07,494 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:04:07,498 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:04:07,498 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:04:07,498 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 03:04:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:07,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:04:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:07,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444272807] [2020-11-28 03:04:07,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:07,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:04:07,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321262116] [2020-11-28 03:04:07,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:04:07,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:04:07,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:04:07,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:07,532 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 3 states. [2020-11-28 03:04:07,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:07,602 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-11-28 03:04:07,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:04:07,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 03:04:07,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:07,605 INFO L225 Difference]: With dead ends: 29 [2020-11-28 03:04:07,605 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 03:04:07,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:07,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 03:04:07,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 03:04:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 03:04:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-11-28 03:04:07,609 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2020-11-28 03:04:07,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:07,610 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-11-28 03:04:07,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:04:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-11-28 03:04:07,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:04:07,610 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:07,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:07,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 03:04:07,823 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:04:07,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:07,823 INFO L82 PathProgramCache]: Analyzing trace with hash -251734211, now seen corresponding path program 1 times [2020-11-28 03:04:07,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:07,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482035902] [2020-11-28 03:04:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 03:04:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:07,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:04:07,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:07,989 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:04:07,989 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:04:07,998 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:04:07,999 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:04:07,999 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 03:04:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:08,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:04:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:08,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482035902] [2020-11-28 03:04:08,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:08,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-28 03:04:08,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909083755] [2020-11-28 03:04:08,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:04:08,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:04:08,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:04:08,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:04:08,085 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 4 states. [2020-11-28 03:04:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:08,169 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-28 03:04:08,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:04:08,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 03:04:08,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:08,171 INFO L225 Difference]: With dead ends: 27 [2020-11-28 03:04:08,171 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:04:08,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:04:08,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:04:08,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 03:04:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:04:08,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-28 03:04:08,175 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2020-11-28 03:04:08,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:08,175 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-28 03:04:08,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:04:08,176 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-28 03:04:08,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:04:08,176 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:08,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:08,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 03:04:08,377 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:04:08,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:08,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1208128460, now seen corresponding path program 1 times [2020-11-28 03:04:08,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:08,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563692804] [2020-11-28 03:04:08,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-28 03:04:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:08,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:08,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:08,551 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 03:04:08,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:04:08,558 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 03:04:08,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563692804] [2020-11-28 03:04:08,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:08,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-28 03:04:08,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655686003] [2020-11-28 03:04:08,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:04:08,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:04:08,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:04:08,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:04:08,559 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2020-11-28 03:04:08,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:08,666 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-11-28 03:04:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:04:08,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 03:04:08,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:08,668 INFO L225 Difference]: With dead ends: 41 [2020-11-28 03:04:08,668 INFO L226 Difference]: Without dead ends: 41 [2020-11-28 03:04:08,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:04:08,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-28 03:04:08,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2020-11-28 03:04:08,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 03:04:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-28 03:04:08,675 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 14 [2020-11-28 03:04:08,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:08,675 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-28 03:04:08,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:04:08,675 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-28 03:04:08,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:04:08,676 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:08,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:08,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 03:04:08,883 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:04:08,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:08,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1208128503, now seen corresponding path program 1 times [2020-11-28 03:04:08,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:08,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116311734] [2020-11-28 03:04:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-28 03:04:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:09,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:04:09,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:09,068 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:04:09,068 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:04:09,070 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:04:09,070 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:04:09,071 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 03:04:09,091 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 03:04:09,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:04:09,106 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 03:04:09,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116311734] [2020-11-28 03:04:09,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:09,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 03:04:09,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080173617] [2020-11-28 03:04:09,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:04:09,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:04:09,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:04:09,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:04:09,108 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-11-28 03:04:09,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:09,248 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-11-28 03:04:09,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:04:09,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 03:04:09,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:09,249 INFO L225 Difference]: With dead ends: 33 [2020-11-28 03:04:09,249 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 03:04:09,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:04:09,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 03:04:09,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2020-11-28 03:04:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 03:04:09,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-11-28 03:04:09,254 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 14 [2020-11-28 03:04:09,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:09,254 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-11-28 03:04:09,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:04:09,254 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-11-28 03:04:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:04:09,254 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:09,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:09,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 03:04:09,465 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:04:09,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:09,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1208128504, now seen corresponding path program 1 times [2020-11-28 03:04:09,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:09,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532901528] [2020-11-28 03:04:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-28 03:04:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:09,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:04:09,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:09,636 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 03:04:09,636 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:04:09,642 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:04:09,642 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:04:09,643 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-28 03:04:09,664 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 03:04:09,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:04:09,772 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 03:04:09,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532901528] [2020-11-28 03:04:09,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:09,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 03:04:09,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616242094] [2020-11-28 03:04:09,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:04:09,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:04:09,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:04:09,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:04:09,774 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 6 states. [2020-11-28 03:04:10,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:10,015 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-11-28 03:04:10,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:04:10,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 03:04:10,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:10,017 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:04:10,017 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 03:04:10,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:04:10,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 03:04:10,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2020-11-28 03:04:10,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:04:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-11-28 03:04:10,021 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 14 [2020-11-28 03:04:10,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:10,021 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-11-28 03:04:10,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:04:10,022 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-11-28 03:04:10,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:04:10,022 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:10,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:10,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 03:04:10,223 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:04:10,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:10,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1674350128, now seen corresponding path program 1 times [2020-11-28 03:04:10,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:10,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904466972] [2020-11-28 03:04:10,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-28 03:04:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:10,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:04:10,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:10,409 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-28 03:04:10,409 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:04:10,411 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:04:10,412 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:04:10,412 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-11-28 03:04:10,441 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-11-28 03:04:10,441 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2020-11-28 03:04:10,442 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:04:10,445 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:04:10,445 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:04:10,445 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:7 [2020-11-28 03:04:10,466 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-11-28 03:04:10,467 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:04:10,469 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:04:10,469 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:04:10,469 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-11-28 03:04:10,483 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 03:04:10,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:04:10,504 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:04:10,507 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:04:10,508 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 03:04:10,508 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:12 [2020-11-28 03:04:10,520 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 03:04:10,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904466972] [2020-11-28 03:04:10,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:10,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 03:04:10,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315552399] [2020-11-28 03:04:10,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:04:10,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:04:10,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:04:10,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:04:10,522 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2020-11-28 03:04:10,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:10,698 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-11-28 03:04:10,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:04:10,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:04:10,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:10,700 INFO L225 Difference]: With dead ends: 34 [2020-11-28 03:04:10,700 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 03:04:10,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:04:10,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 03:04:10,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-11-28 03:04:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:04:10,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-28 03:04:10,703 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 18 [2020-11-28 03:04:10,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:10,703 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-28 03:04:10,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:04:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-28 03:04:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:04:10,704 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:10,704 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 03:04:10,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-28 03:04:10,909 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-28 03:04:10,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:10,909 INFO L82 PathProgramCache]: Analyzing trace with hash -361076259, now seen corresponding path program 1 times [2020-11-28 03:04:10,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:04:10,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978477292] [2020-11-28 03:04:10,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f65aa6c9-672c-4920-9604-e87a634b5085/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-28 03:04:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:11,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:04:11,105 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:04:11,134 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:04:11,134 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:04:11,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-28 03:04:11,343 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-28 03:04:11,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:04:11 BoogieIcfgContainer [2020-11-28 03:04:11,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:04:11,357 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:04:11,357 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:04:11,357 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:04:11,357 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:05" (3/4) ... [2020-11-28 03:04:11,362 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:04:11,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:04:11,364 INFO L168 Benchmark]: Toolchain (without parser) took 7221.71 ms. Allocated memory was 50.3 MB in the beginning and 96.5 MB in the end (delta: 46.1 MB). Free memory was 25.9 MB in the beginning and 48.7 MB in the end (delta: -22.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:11,364 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 32.1 MB in the beginning and 32.0 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:11,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.49 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 25.7 MB in the beginning and 35.6 MB in the end (delta: -9.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:11,367 INFO L168 Benchmark]: Boogie Preprocessor took 118.06 ms. Allocated memory is still 65.0 MB. Free memory was 35.6 MB in the beginning and 45.9 MB in the end (delta: -10.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:11,367 INFO L168 Benchmark]: RCFGBuilder took 841.26 ms. Allocated memory is still 65.0 MB. Free memory was 45.9 MB in the beginning and 37.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:11,368 INFO L168 Benchmark]: TraceAbstraction took 5739.17 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 36.5 MB in the beginning and 48.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:11,368 INFO L168 Benchmark]: Witness Printer took 6.10 ms. Allocated memory is still 96.5 MB. Free memory is still 48.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:11,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 32.1 MB in the beginning and 32.0 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 502.49 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 25.7 MB in the beginning and 35.6 MB in the end (delta: -9.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 118.06 ms. Allocated memory is still 65.0 MB. Free memory was 35.6 MB in the beginning and 45.9 MB in the end (delta: -10.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 841.26 ms. Allocated memory is still 65.0 MB. Free memory was 45.9 MB in the beginning and 37.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5739.17 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 36.5 MB in the beginning and 48.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.10 ms. Allocated memory is still 96.5 MB. Free memory is still 48.7 MB. There was no memory consumed. 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) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List t; [L533] List p = 0; VAL [p={0:0}] [L534] COND TRUE __VERIFIER_nondet_int() [L535] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L536] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L537] t->h = 1 VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L538] t->n = p VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L539] p = t VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, t={1:0}] [L534] COND FALSE !(__VERIFIER_nondet_int()) [L541] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, t={1:0}] [L542] EXPR p->h VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=1, t={1:0}] [L542] COND FALSE !(p->h != 1) [L545] EXPR p->n VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, p->n={0:0}, t={1:0}] [L545] p = p->n [L541] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 61 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 201 SDtfs, 184 SDslu, 142 SDs, 0 SdLazy, 201 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 181 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 41 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 7940 SizeOfPredicates, 22 NumberOfNonLiveVariables, 627 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...