./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be --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 3a34687129125cc08371e7bb78f7bdb7a4f5274a9b22928fd388f593b6db6995 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:04:02,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:04:02,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:04:02,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:04:02,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:04:02,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:04:02,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:04:02,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:04:02,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:04:02,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:04:02,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:04:02,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:04:02,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:04:02,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:04:02,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:04:02,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:04:02,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:04:02,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:04:02,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:04:02,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:04:02,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:04:02,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:04:02,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:04:02,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:04:02,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:04:02,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:04:02,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:04:02,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:04:02,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:04:02,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:04:02,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:04:02,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:04:02,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:04:02,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:04:02,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:04:02,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:04:02,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:04:02,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:04:02,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:04:02,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:04:02,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:04:02,564 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 20:04:02,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:04:02,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:04:02,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:04:02,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:04:02,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:04:02,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:04:02,627 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:04:02,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:04:02,628 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:04:02,628 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:04:02,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:04:02,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:04:02,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:04:02,631 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:04:02,631 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:04:02,631 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:04:02,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:04:02,632 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:04:02,632 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:04:02,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:04:02,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:04:02,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:04:02,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:04:02,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:04:02,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:04:02,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:04:02,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:04:02,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:04:02,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:04:02,637 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_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a34687129125cc08371e7bb78f7bdb7a4f5274a9b22928fd388f593b6db6995 [2021-10-21 20:04:03,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:04:03,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:04:03,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:04:03,041 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:04:03,042 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:04:03,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2021-10-21 20:04:03,122 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/data/29fc18cc1/9d37d825c8334bec93724bc464be4e46/FLAG9473b53c1 [2021-10-21 20:04:03,760 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:04:03,761 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2021-10-21 20:04:03,777 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/data/29fc18cc1/9d37d825c8334bec93724bc464be4e46/FLAG9473b53c1 [2021-10-21 20:04:04,016 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/data/29fc18cc1/9d37d825c8334bec93724bc464be4e46 [2021-10-21 20:04:04,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:04:04,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:04:04,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:04:04,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:04:04,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:04:04,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:04:04" (1/1) ... [2021-10-21 20:04:04,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@506924b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:04:04, skipping insertion in model container [2021-10-21 20:04:04,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:04:04" (1/1) ... [2021-10-21 20:04:04,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:04:04,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:04:04,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:04:04,557 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:04:04,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:04:04,651 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:04:04,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:04:04 WrapperNode [2021-10-21 20:04:04,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:04:04,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:04:04,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:04:04,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:04:04,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:04:04" (1/1) ... [2021-10-21 20:04:04,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:04:04" (1/1) ... [2021-10-21 20:04:04,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:04:04" (1/1) ... [2021-10-21 20:04:04,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:04:04" (1/1) ... [2021-10-21 20:04:04,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:04:04" (1/1) ... [2021-10-21 20:04:04,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:04:04" (1/1) ... [2021-10-21 20:04:04,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:04:04" (1/1) ... [2021-10-21 20:04:04,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:04:04,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:04:04,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:04:04,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:04:04,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:04:04" (1/1) ... [2021-10-21 20:04:04,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:04:04,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:04:04,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:04:04,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:04:04,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:04:04,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:04:04,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 20:04:04,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 20:04:04,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 20:04:04,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 20:04:04,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 20:04:04,820 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemrchr [2021-10-21 20:04:04,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:04:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 20:04:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 20:04:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 20:04:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 20:04:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 20:04:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 20:04:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 20:04:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 20:04:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 20:04:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 20:04:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 20:04:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 20:04:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 20:04:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 20:04:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 20:04:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 20:04:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 20:04:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 20:04:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 20:04:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 20:04:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 20:04:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 20:04:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 20:04:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 20:04:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 20:04:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 20:04:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 20:04:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 20:04:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 20:04:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 20:04:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 20:04:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 20:04:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 20:04:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 20:04:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 20:04:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 20:04:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 20:04:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 20:04:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 20:04:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 20:04:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 20:04:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 20:04:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 20:04:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 20:04:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 20:04:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 20:04:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 20:04:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 20:04:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 20:04:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 20:04:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 20:04:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 20:04:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 20:04:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 20:04:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 20:04:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 20:04:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 20:04:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 20:04:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 20:04:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 20:04:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 20:04:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 20:04:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 20:04:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 20:04:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 20:04:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 20:04:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 20:04:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 20:04:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 20:04:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 20:04:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 20:04:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 20:04:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 20:04:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 20:04:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 20:04:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 20:04:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 20:04:04,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 20:04:04,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 20:04:04,838 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 20:04:04,838 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 20:04:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 20:04:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 20:04:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 20:04:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 20:04:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 20:04:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 20:04:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 20:04:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 20:04:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 20:04:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 20:04:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 20:04:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 20:04:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 20:04:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 20:04:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 20:04:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 20:04:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 20:04:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 20:04:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 20:04:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 20:04:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 20:04:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 20:04:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 20:04:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 20:04:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 20:04:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 20:04:04,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:04:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-10-21 20:04:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure cmemrchr [2021-10-21 20:04:04,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:04:04,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:04:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:04:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:04:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:04:04,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:04:04,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:04:05,409 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:04:05,410 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-21 20:04:05,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:04:05 BoogieIcfgContainer [2021-10-21 20:04:05,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:04:05,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:04:05,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:04:05,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:04:05,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:04:04" (1/3) ... [2021-10-21 20:04:05,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8bc647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:04:05, skipping insertion in model container [2021-10-21 20:04:05,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:04:04" (2/3) ... [2021-10-21 20:04:05,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8bc647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:04:05, skipping insertion in model container [2021-10-21 20:04:05,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:04:05" (3/3) ... [2021-10-21 20:04:05,429 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca-2.i [2021-10-21 20:04:05,435 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:04:05,436 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-21 20:04:05,487 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:04:05,494 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:04:05,495 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-21 20:04:05,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 20:04:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:04:05,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:04:05,522 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:04:05,523 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 20:04:05,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:04:05,530 INFO L82 PathProgramCache]: Analyzing trace with hash -840380262, now seen corresponding path program 1 times [2021-10-21 20:04:05,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:04:05,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642761454] [2021-10-21 20:04:05,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:05,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:04:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:05,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:04:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:05,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:05,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:04:05,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642761454] [2021-10-21 20:04:05,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642761454] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:04:05,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:04:05,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:04:05,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350787034] [2021-10-21 20:04:05,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:04:05,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:04:05,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:04:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:04:05,928 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:06,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:04:06,061 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-10-21 20:04:06,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:04:06,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-21 20:04:06,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:04:06,072 INFO L225 Difference]: With dead ends: 33 [2021-10-21 20:04:06,072 INFO L226 Difference]: Without dead ends: 30 [2021-10-21 20:04:06,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:04:06,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-21 20:04:06,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-21 20:04:06,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:04:06,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-10-21 20:04:06,114 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2021-10-21 20:04:06,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:04:06,115 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-10-21 20:04:06,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:06,116 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-10-21 20:04:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:04:06,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:04:06,117 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:04:06,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:04:06,118 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 20:04:06,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:04:06,119 INFO L82 PathProgramCache]: Analyzing trace with hash -840380261, now seen corresponding path program 1 times [2021-10-21 20:04:06,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:04:06,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265475221] [2021-10-21 20:04:06,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:06,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:04:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:06,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:04:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:06,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:04:06,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265475221] [2021-10-21 20:04:06,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265475221] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:04:06,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:04:06,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:04:06,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395488941] [2021-10-21 20:04:06,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:04:06,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:04:06,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:04:06,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:04:06,335 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:06,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:04:06,521 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-10-21 20:04:06,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:04:06,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-21 20:04:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:04:06,526 INFO L225 Difference]: With dead ends: 34 [2021-10-21 20:04:06,526 INFO L226 Difference]: Without dead ends: 34 [2021-10-21 20:04:06,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 53.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:04:06,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-21 20:04:06,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-10-21 20:04:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.391304347826087) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:04:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-10-21 20:04:06,539 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2021-10-21 20:04:06,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:04:06,540 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-10-21 20:04:06,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-10-21 20:04:06,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:04:06,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:04:06,541 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:04:06,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:04:06,542 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 20:04:06,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:04:06,543 INFO L82 PathProgramCache]: Analyzing trace with hash 361396958, now seen corresponding path program 1 times [2021-10-21 20:04:06,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:04:06,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920995801] [2021-10-21 20:04:06,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:06,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:04:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:04:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:06,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:04:06,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920995801] [2021-10-21 20:04:06,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920995801] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:06,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632031434] [2021-10-21 20:04:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:06,747 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:06,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:04:06,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:04:06,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:04:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:06,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:04:06,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:04:06,992 INFO L388 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 [2021-10-21 20:04:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:07,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632031434] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:07,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:04:07,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-10-21 20:04:07,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590072457] [2021-10-21 20:04:07,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:04:07,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:04:07,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:04:07,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:04:07,160 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:07,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:04:07,287 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-10-21 20:04:07,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:04:07,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-10-21 20:04:07,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:04:07,289 INFO L225 Difference]: With dead ends: 33 [2021-10-21 20:04:07,289 INFO L226 Difference]: Without dead ends: 33 [2021-10-21 20:04:07,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 82.7ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:04:07,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-21 20:04:07,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-10-21 20:04:07,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:04:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-10-21 20:04:07,295 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 15 [2021-10-21 20:04:07,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:04:07,296 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-10-21 20:04:07,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-10-21 20:04:07,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 20:04:07,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:04:07,298 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:04:07,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:04:07,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:07,523 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting cmemrchrErr0REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 20:04:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:04:07,524 INFO L82 PathProgramCache]: Analyzing trace with hash 25874007, now seen corresponding path program 1 times [2021-10-21 20:04:07,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:04:07,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600608007] [2021-10-21 20:04:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:07,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:04:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:04:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:07,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:04:07,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600608007] [2021-10-21 20:04:07,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600608007] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:04:07,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:04:07,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:04:07,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518550108] [2021-10-21 20:04:07,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:04:07,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:04:07,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:04:07,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:04:07,719 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:04:07,934 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-10-21 20:04:07,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:04:07,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-21 20:04:07,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:04:07,940 INFO L225 Difference]: With dead ends: 32 [2021-10-21 20:04:07,940 INFO L226 Difference]: Without dead ends: 32 [2021-10-21 20:04:07,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:04:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-21 20:04:07,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-10-21 20:04:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:04:07,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-10-21 20:04:07,956 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 19 [2021-10-21 20:04:07,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:04:07,957 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-10-21 20:04:07,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-10-21 20:04:07,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 20:04:07,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:04:07,959 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:04:07,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:04:07,959 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 20:04:07,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:04:07,960 INFO L82 PathProgramCache]: Analyzing trace with hash 25874008, now seen corresponding path program 1 times [2021-10-21 20:04:07,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:04:07,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197786930] [2021-10-21 20:04:07,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:07,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:04:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:04:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:08,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:04:08,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197786930] [2021-10-21 20:04:08,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197786930] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:08,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190217977] [2021-10-21 20:04:08,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:08,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:08,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:04:08,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:04:08,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:04:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:08,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-21 20:04:08,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:04:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:09,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190217977] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:09,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:04:09,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17 [2021-10-21 20:04:09,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115361097] [2021-10-21 20:04:09,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 20:04:09,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:04:09,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 20:04:09,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-10-21 20:04:09,308 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 18 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:04:10,252 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2021-10-21 20:04:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:04:10,253 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-21 20:04:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:04:10,255 INFO L225 Difference]: With dead ends: 66 [2021-10-21 20:04:10,255 INFO L226 Difference]: Without dead ends: 66 [2021-10-21 20:04:10,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 846.0ms TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2021-10-21 20:04:10,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-21 20:04:10,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 46. [2021-10-21 20:04:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 39 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 20:04:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2021-10-21 20:04:10,268 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 19 [2021-10-21 20:04:10,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:04:10,269 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2021-10-21 20:04:10,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:10,269 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2021-10-21 20:04:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 20:04:10,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:04:10,272 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:04:10,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:04:10,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:10,499 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 20:04:10,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:04:10,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1472955803, now seen corresponding path program 2 times [2021-10-21 20:04:10,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:04:10,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180470202] [2021-10-21 20:04:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:10,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:04:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:10,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:04:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:10,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:04:10,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180470202] [2021-10-21 20:04:10,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180470202] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:10,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886702729] [2021-10-21 20:04:10,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:04:10,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:10,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:04:10,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:04:10,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:04:11,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 20:04:11,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:04:11,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-21 20:04:11,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:04:11,114 INFO L388 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 [2021-10-21 20:04:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 20:04:11,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886702729] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:04:11,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:04:11,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2021-10-21 20:04:11,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399662164] [2021-10-21 20:04:11,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:04:11,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:04:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:04:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-10-21 20:04:11,545 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:04:11,824 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2021-10-21 20:04:11,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:04:11,826 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-21 20:04:11,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:04:11,828 INFO L225 Difference]: With dead ends: 56 [2021-10-21 20:04:11,828 INFO L226 Difference]: Without dead ends: 56 [2021-10-21 20:04:11,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 512.3ms TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-10-21 20:04:11,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-21 20:04:11,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 31. [2021-10-21 20:04:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:04:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-10-21 20:04:11,833 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 23 [2021-10-21 20:04:11,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:04:11,834 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-21 20:04:11,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-10-21 20:04:11,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:04:11,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:04:11,838 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:04:11,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:04:12,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-21 20:04:12,063 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 20:04:12,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:04:12,063 INFO L82 PathProgramCache]: Analyzing trace with hash 2125510050, now seen corresponding path program 1 times [2021-10-21 20:04:12,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:04:12,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826234044] [2021-10-21 20:04:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:12,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:04:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:12,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:04:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:12,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:04:12,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826234044] [2021-10-21 20:04:12,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826234044] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:12,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21446137] [2021-10-21 20:04:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:12,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:12,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:04:12,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:04:12,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:04:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:12,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:04:12,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:04:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:12,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21446137] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:12,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:04:12,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-10-21 20:04:12,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778148943] [2021-10-21 20:04:12,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:04:12,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:04:12,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:04:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:04:12,658 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:12,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:04:12,968 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-10-21 20:04:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:04:12,969 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-21 20:04:12,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:04:12,970 INFO L225 Difference]: With dead ends: 63 [2021-10-21 20:04:12,971 INFO L226 Difference]: Without dead ends: 63 [2021-10-21 20:04:12,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 218.0ms TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-21 20:04:12,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-21 20:04:12,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2021-10-21 20:04:12,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 45 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 20:04:12,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-10-21 20:04:12,978 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 24 [2021-10-21 20:04:12,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:04:12,979 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-10-21 20:04:12,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-10-21 20:04:12,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:04:12,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:04:12,981 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:04:13,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:04:13,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:13,195 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ENSURES_VIOLATIONMEMORY_LEAK === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 20:04:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:04:13,195 INFO L82 PathProgramCache]: Analyzing trace with hash 2125031501, now seen corresponding path program 1 times [2021-10-21 20:04:13,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:04:13,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546439652] [2021-10-21 20:04:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:13,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:04:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:13,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:04:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:13,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-21 20:04:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:04:13,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:04:13,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546439652] [2021-10-21 20:04:13,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546439652] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:04:13,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:04:13,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:04:13,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380987119] [2021-10-21 20:04:13,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:04:13,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:04:13,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:04:13,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:04:13,317 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:04:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:04:13,368 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2021-10-21 20:04:13,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:04:13,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-10-21 20:04:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:04:13,373 INFO L225 Difference]: With dead ends: 51 [2021-10-21 20:04:13,373 INFO L226 Difference]: Without dead ends: 29 [2021-10-21 20:04:13,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:04:13,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-21 20:04:13,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-21 20:04:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:13,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-10-21 20:04:13,388 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2021-10-21 20:04:13,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:04:13,388 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-10-21 20:04:13,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:04:13,388 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-10-21 20:04:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 20:04:13,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:04:13,391 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:04:13,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 20:04:13,394 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 20:04:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:04:13,394 INFO L82 PathProgramCache]: Analyzing trace with hash -912322497, now seen corresponding path program 2 times [2021-10-21 20:04:13,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:04:13,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071610329] [2021-10-21 20:04:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:13,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:04:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:13,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:04:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:13,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:04:13,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071610329] [2021-10-21 20:04:13,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071610329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:13,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265358706] [2021-10-21 20:04:13,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:04:13,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:13,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:04:13,816 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:04:13,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 20:04:14,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:04:14,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:04:14,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-21 20:04:14,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:04:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:14,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265358706] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:14,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:04:14,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2021-10-21 20:04:14,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734608316] [2021-10-21 20:04:14,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-21 20:04:14,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:04:14,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-21 20:04:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2021-10-21 20:04:14,863 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 25 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:04:16,551 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2021-10-21 20:04:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-21 20:04:16,552 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-10-21 20:04:16,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:04:16,553 INFO L225 Difference]: With dead ends: 59 [2021-10-21 20:04:16,553 INFO L226 Difference]: Without dead ends: 59 [2021-10-21 20:04:16,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 1826.2ms TimeCoverageRelationStatistics Valid=273, Invalid=1889, Unknown=0, NotChecked=0, Total=2162 [2021-10-21 20:04:16,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-21 20:04:16,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2021-10-21 20:04:16,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-10-21 20:04:16,558 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 28 [2021-10-21 20:04:16,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:04:16,559 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-10-21 20:04:16,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:16,559 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-10-21 20:04:16,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 20:04:16,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:04:16,561 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:04:16,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:04:16,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-21 20:04:16,775 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 20:04:16,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:04:16,776 INFO L82 PathProgramCache]: Analyzing trace with hash 407669787, now seen corresponding path program 3 times [2021-10-21 20:04:16,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:04:16,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806436021] [2021-10-21 20:04:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:16,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:04:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:16,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:04:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:16,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:04:16,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806436021] [2021-10-21 20:04:16,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806436021] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:16,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613936484] [2021-10-21 20:04:16,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:04:16,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:16,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:04:16,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:04:16,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 20:04:17,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 20:04:17,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:04:17,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 20:04:17,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:04:17,470 INFO L388 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 [2021-10-21 20:04:17,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 13 treesize of output 9 [2021-10-21 20:04:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:17,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613936484] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:17,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:04:17,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 16 [2021-10-21 20:04:17,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293772467] [2021-10-21 20:04:17,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 20:04:17,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:04:17,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 20:04:17,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:04:17,800 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:04:18,116 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2021-10-21 20:04:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:04:18,117 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-10-21 20:04:18,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:04:18,118 INFO L225 Difference]: With dead ends: 54 [2021-10-21 20:04:18,118 INFO L226 Difference]: Without dead ends: 41 [2021-10-21 20:04:18,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 293.9ms TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-10-21 20:04:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-21 20:04:18,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-10-21 20:04:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-10-21 20:04:18,122 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 33 [2021-10-21 20:04:18,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:04:18,123 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-10-21 20:04:18,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:18,123 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-10-21 20:04:18,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 20:04:18,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:04:18,124 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:04:18,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:04:18,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:18,347 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 20:04:18,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:04:18,348 INFO L82 PathProgramCache]: Analyzing trace with hash -605171170, now seen corresponding path program 4 times [2021-10-21 20:04:18,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:04:18,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578924946] [2021-10-21 20:04:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:18,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:04:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:18,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:04:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:18,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:04:18,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578924946] [2021-10-21 20:04:18,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578924946] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:18,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630404905] [2021-10-21 20:04:18,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 20:04:18,871 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:18,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:04:18,882 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:04:18,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 20:04:19,128 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 20:04:19,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:04:19,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-21 20:04:19,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:04:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:20,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630404905] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:20,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:04:20,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 31 [2021-10-21 20:04:20,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222085173] [2021-10-21 20:04:20,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-21 20:04:20,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:04:20,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-21 20:04:20,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2021-10-21 20:04:20,176 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 32 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-21 20:04:22,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:04:22,201 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2021-10-21 20:04:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-21 20:04:22,202 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2021-10-21 20:04:22,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:04:22,203 INFO L225 Difference]: With dead ends: 73 [2021-10-21 20:04:22,203 INFO L226 Difference]: Without dead ends: 73 [2021-10-21 20:04:22,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 2270.5ms TimeCoverageRelationStatistics Valid=419, Invalid=3241, Unknown=0, NotChecked=0, Total=3660 [2021-10-21 20:04:22,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-21 20:04:22,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 43. [2021-10-21 20:04:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-10-21 20:04:22,210 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 37 [2021-10-21 20:04:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:04:22,211 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-10-21 20:04:22,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-21 20:04:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-10-21 20:04:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-21 20:04:22,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:04:22,213 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:04:22,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-21 20:04:22,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:22,427 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 20:04:22,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:04:22,427 INFO L82 PathProgramCache]: Analyzing trace with hash 446111132, now seen corresponding path program 5 times [2021-10-21 20:04:22,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:04:22,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260494104] [2021-10-21 20:04:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:22,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:04:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:04:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:22,672 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:22,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:04:22,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260494104] [2021-10-21 20:04:22,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260494104] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:22,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457588461] [2021-10-21 20:04:22,673 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 20:04:22,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:22,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:04:22,675 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:04:22,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 20:04:22,973 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-21 20:04:22,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:04:22,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 20:04:22,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:04:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:23,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457588461] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:23,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:04:23,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 16 [2021-10-21 20:04:23,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396049170] [2021-10-21 20:04:23,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 20:04:23,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:04:23,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 20:04:23,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:04:23,291 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 16 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:04:23,706 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2021-10-21 20:04:23,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:04:23,706 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-10-21 20:04:23,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:04:23,707 INFO L225 Difference]: With dead ends: 68 [2021-10-21 20:04:23,707 INFO L226 Difference]: Without dead ends: 50 [2021-10-21 20:04:23,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 257.6ms TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2021-10-21 20:04:23,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-21 20:04:23,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2021-10-21 20:04:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-10-21 20:04:23,712 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 42 [2021-10-21 20:04:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:04:23,712 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-10-21 20:04:23,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-10-21 20:04:23,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-21 20:04:23,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:04:23,714 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:04:23,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:04:23,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-21 20:04:23,931 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting cmemrchrErr1REQUIRES_VIOLATION === [cmemrchrErr0REQUIRES_VIOLATION, cmemrchrErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 20:04:23,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:04:23,931 INFO L82 PathProgramCache]: Analyzing trace with hash -840897799, now seen corresponding path program 6 times [2021-10-21 20:04:23,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:04:23,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112687507] [2021-10-21 20:04:23,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:04:23,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:04:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:24,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:04:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:04:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-21 20:04:24,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:04:24,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112687507] [2021-10-21 20:04:24,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112687507] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:24,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797241244] [2021-10-21 20:04:24,423 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 20:04:24,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:04:24,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:04:24,424 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:04:24,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 20:04:24,877 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-21 20:04:24,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:04:24,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-21 20:04:24,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:04:24,971 INFO L388 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 [2021-10-21 20:04:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:04:26,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797241244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:04:26,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:04:26,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 33 [2021-10-21 20:04:26,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325642492] [2021-10-21 20:04:26,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-21 20:04:26,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:04:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-21 20:04:26,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 20:04:26,252 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 34 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:30,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:04:30,595 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2021-10-21 20:04:30,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-21 20:04:30,596 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-10-21 20:04:30,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:04:30,597 INFO L225 Difference]: With dead ends: 80 [2021-10-21 20:04:30,597 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:04:30,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 4396.4ms TimeCoverageRelationStatistics Valid=616, Invalid=4354, Unknown=0, NotChecked=0, Total=4970 [2021-10-21 20:04:30,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:04:30,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:04:30,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:04:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:04:30,600 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2021-10-21 20:04:30,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:04:30,600 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:04:30,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:04:30,601 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:04:30,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:04:30,604 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cmemrchrErr0REQUIRES_VIOLATION [2021-10-21 20:04:30,604 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cmemrchrErr1REQUIRES_VIOLATION [2021-10-21 20:04:30,605 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-10-21 20:04:30,605 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-10-21 20:04:30,605 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:04:30,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:04:30,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-21 20:04:30,828 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:04:30,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:04:30 BoogieIcfgContainer [2021-10-21 20:04:30,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:04:30,838 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:04:30,838 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:04:30,838 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:04:30,839 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:04:05" (3/4) ... [2021-10-21 20:04:30,841 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:04:30,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-21 20:04:30,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemrchr [2021-10-21 20:04:30,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-10-21 20:04:30,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-10-21 20:04:30,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-10-21 20:04:30,848 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-10-21 20:04:30,849 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-21 20:04:30,849 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-10-21 20:04:30,853 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-21 20:04:30,854 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-21 20:04:30,855 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:04:30,891 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:04:30,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:04:30,896 INFO L168 Benchmark]: Toolchain (without parser) took 26871.01 ms. Allocated memory was 104.9 MB in the beginning and 142.6 MB in the end (delta: 37.7 MB). Free memory was 66.5 MB in the beginning and 33.6 MB in the end (delta: 32.9 MB). Peak memory consumption was 68.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:04:30,896 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 104.9 MB. Free memory was 84.0 MB in the beginning and 83.9 MB in the end (delta: 60.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:04:30,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.07 ms. Allocated memory is still 104.9 MB. Free memory was 66.3 MB in the beginning and 72.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:04:30,899 INFO L168 Benchmark]: Boogie Preprocessor took 60.03 ms. Allocated memory is still 104.9 MB. Free memory was 72.4 MB in the beginning and 69.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:04:30,900 INFO L168 Benchmark]: RCFGBuilder took 699.75 ms. Allocated memory is still 104.9 MB. Free memory was 69.9 MB in the beginning and 51.9 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:04:30,900 INFO L168 Benchmark]: TraceAbstraction took 25422.28 ms. Allocated memory was 104.9 MB in the beginning and 142.6 MB in the end (delta: 37.7 MB). Free memory was 51.3 MB in the beginning and 36.4 MB in the end (delta: 14.8 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:04:30,901 INFO L168 Benchmark]: Witness Printer took 54.33 ms. Allocated memory is still 142.6 MB. Free memory was 36.4 MB in the beginning and 33.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:04:30,903 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 104.9 MB. Free memory was 84.0 MB in the beginning and 83.9 MB in the end (delta: 60.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 628.07 ms. Allocated memory is still 104.9 MB. Free memory was 66.3 MB in the beginning and 72.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.03 ms. Allocated memory is still 104.9 MB. Free memory was 72.4 MB in the beginning and 69.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 699.75 ms. Allocated memory is still 104.9 MB. Free memory was 69.9 MB in the beginning and 51.9 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25422.28 ms. Allocated memory was 104.9 MB in the beginning and 142.6 MB in the end (delta: 37.7 MB). Free memory was 51.3 MB in the beginning and 36.4 MB in the end (delta: 14.8 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. * Witness Printer took 54.33 ms. Allocated memory is still 142.6 MB. Free memory was 36.4 MB in the beginning and 33.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 25343.1ms, OverallIterations: 13, TraceHistogramMax: 4, EmptinessCheckTime: 31.9ms, AutomataDifference: 11130.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 270 SDtfs, 815 SDslu, 963 SDs, 0 SdLazy, 3773 SolverSat, 239 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2818.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 537 GetRequests, 225 SyntacticMatches, 4 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2572 ImplicationChecksByTransitivity, 10926.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=7, InterpolantAutomatonStates: 198, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 108.2ms AutomataMinimizationTime, 13 MinimizatonAttempts, 125 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 138.7ms SsaConstructionTime, 1035.4ms SatisfiabilityAnalysisTime, 8935.2ms InterpolantComputationTime, 599 NumberOfCodeBlocks, 591 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 577 ConstructedInterpolants, 0 QuantifiedInterpolants, 5202 SizeOfPredicates, 70 NumberOfNonLiveVariables, 1280 ConjunctsInSsa, 285 ConjunctsInUnsatCore, 22 InterpolantComputations, 5 PerfectInterpolantSequences, 69/290 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 - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 20:04:30,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_286ac37e-4364-494f-b61f-1a1a89c43d12/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...