./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL --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 eba94063d18105b44b9503ed48a138d00b9b850cd51aae19571aab60c15e268e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:09:05,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:09:05,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:09:05,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:09:05,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:09:05,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:09:05,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:09:05,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:09:05,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:09:05,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:09:05,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:09:05,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:09:05,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:09:05,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:09:05,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:09:05,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:09:05,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:09:05,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:09:05,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:09:05,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:09:05,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:09:05,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:09:05,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:09:05,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:09:05,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:09:05,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:09:05,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:09:05,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:09:05,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:09:05,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:09:05,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:09:05,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:09:05,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:09:05,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:09:05,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:09:05,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:09:05,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:09:05,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:09:05,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:09:05,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:09:05,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:09:05,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:09:05,777 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:09:05,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:09:05,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:09:05,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:09:05,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:09:05,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:09:05,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:09:05,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:09:05,787 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:09:05,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:09:05,789 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:09:05,789 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:09:05,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:09:05,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:09:05,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:09:05,790 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:09:05,790 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:09:05,790 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:09:05,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:09:05,791 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:09:05,791 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:09:05,791 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:09:05,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:09:05,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:09:05,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:09:05,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:09:05,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:09:05,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:09:05,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:09:05,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:09:05,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:09:05,794 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_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eba94063d18105b44b9503ed48a138d00b9b850cd51aae19571aab60c15e268e [2021-11-19 05:09:06,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:09:06,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:09:06,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:09:06,112 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:09:06,112 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:09:06,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2021-11-19 05:09:06,182 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/data/423bf184e/d4e50cc9c1914ee88f8243f1b972187d/FLAG99589d41e [2021-11-19 05:09:06,811 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:09:06,815 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2021-11-19 05:09:06,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/data/423bf184e/d4e50cc9c1914ee88f8243f1b972187d/FLAG99589d41e [2021-11-19 05:09:07,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/data/423bf184e/d4e50cc9c1914ee88f8243f1b972187d [2021-11-19 05:09:07,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:09:07,102 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:09:07,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:09:07,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:09:07,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:09:07,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:09:07" (1/1) ... [2021-11-19 05:09:07,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577c63c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:07, skipping insertion in model container [2021-11-19 05:09:07,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:09:07" (1/1) ... [2021-11-19 05:09:07,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:09:07,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:09:07,440 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:09:07,447 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:09:07,483 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:09:07,510 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:09:07,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:07 WrapperNode [2021-11-19 05:09:07,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:09:07,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:09:07,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:09:07,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:09:07,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:07" (1/1) ... [2021-11-19 05:09:07,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:07" (1/1) ... [2021-11-19 05:09:07,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:07" (1/1) ... [2021-11-19 05:09:07,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:07" (1/1) ... [2021-11-19 05:09:07,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:07" (1/1) ... [2021-11-19 05:09:07,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:07" (1/1) ... [2021-11-19 05:09:07,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:07" (1/1) ... [2021-11-19 05:09:07,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:09:07,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:09:07,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:09:07,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:09:07,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:07" (1/1) ... [2021-11-19 05:09:07,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:09:07,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:09:07,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:09:07,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:09:07,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:09:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:09:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 05:09:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 05:09:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 05:09:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 05:09:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 05:09:07,644 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemset [2021-11-19 05:09:07,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:09:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:09:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:09:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:09:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:09:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:09:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:09:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:09:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:09:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:09:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:09:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:09:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:09:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:09:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:09:07,647 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:09:07,647 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:09:07,647 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 05:09:07,647 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 05:09:07,647 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 05:09:07,647 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 05:09:07,648 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 05:09:07,648 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:09:07,648 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:09:07,648 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:09:07,648 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:09:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:09:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:09:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:09:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:09:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:09:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:09:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:09:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:09:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:09:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:09:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:09:07,650 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:09:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:09:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:09:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:09:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:09:07,651 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:09:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:09:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:09:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:09:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:09:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:09:07,652 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:09:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:09:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:09:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:09:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:09:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:09:07,653 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:09:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:09:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:09:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:09:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:09:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:09:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:09:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:09:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:09:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:09:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:09:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:09:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:09:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:09:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:09:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:09:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:09:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:09:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:09:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:09:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:09:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:09:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:09:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:09:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:09:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:09:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:09:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:09:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:09:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:09:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:09:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:09:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:09:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:09:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:09:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:09:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:09:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:09:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:09:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:09:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:09:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:09:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:09:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:09:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:09:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:09:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:09:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:09:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:09:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:09:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:09:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:09:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:09:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:09:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 05:09:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure cmemset [2021-11-19 05:09:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 05:09:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:09:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:09:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:09:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:09:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:09:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 05:09:07,897 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:09:07,899 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:09:08,069 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:09:08,076 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:09:08,076 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 05:09:08,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:09:08 BoogieIcfgContainer [2021-11-19 05:09:08,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:09:08,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:09:08,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:09:08,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:09:08,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:09:07" (1/3) ... [2021-11-19 05:09:08,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b40595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:09:08, skipping insertion in model container [2021-11-19 05:09:08,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:07" (2/3) ... [2021-11-19 05:09:08,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b40595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:09:08, skipping insertion in model container [2021-11-19 05:09:08,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:09:08" (3/3) ... [2021-11-19 05:09:08,087 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cmemset-alloca-1.i [2021-11-19 05:09:08,092 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:09:08,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 05:09:08,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:09:08,144 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 [2021-11-19 05:09:08,145 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 05:09:08,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 21 states have internal predecessors, (26), 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) [2021-11-19 05:09:08,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 05:09:08,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:08,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:08,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:08,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:08,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1505405860, now seen corresponding path program 1 times [2021-11-19 05:09:08,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:08,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592244982] [2021-11-19 05:09:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:08,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:08,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:08,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:08,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592244982] [2021-11-19 05:09:08,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592244982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:08,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:08,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:09:08,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942456744] [2021-11-19 05:09:08,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:08,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:09:08,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:08,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:09:08,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:09:08,691 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 21 states have internal predecessors, (26), 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 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-11-19 05:09:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:08,916 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-11-19 05:09:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:09:08,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 14 [2021-11-19 05:09:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:08,926 INFO L225 Difference]: With dead ends: 32 [2021-11-19 05:09:08,927 INFO L226 Difference]: Without dead ends: 29 [2021-11-19 05:09:08,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:09:08,932 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 62 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:08,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 63 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:09:08,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-19 05:09:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-11-19 05:09:08,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 states have internal predecessors, (26), 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) [2021-11-19 05:09:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-19 05:09:08,966 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2021-11-19 05:09:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:08,967 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-19 05:09:08,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-11-19 05:09:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-19 05:09:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 05:09:08,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:08,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:08,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:09:08,969 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting cmemsetErr0REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:08,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:08,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1505405861, now seen corresponding path program 1 times [2021-11-19 05:09:08,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:08,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000406728] [2021-11-19 05:09:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:08,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:09,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:09,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:09,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000406728] [2021-11-19 05:09:09,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000406728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:09,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:09,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 05:09:09,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003014205] [2021-11-19 05:09:09,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:09,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:09:09,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:09,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:09:09,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:09:09,056 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-11-19 05:09:09,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:09,183 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-11-19 05:09:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:09:09,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 14 [2021-11-19 05:09:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:09,187 INFO L225 Difference]: With dead ends: 29 [2021-11-19 05:09:09,187 INFO L226 Difference]: Without dead ends: 29 [2021-11-19 05:09:09,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:09:09,189 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:09,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 42 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:09:09,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-19 05:09:09,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2021-11-19 05:09:09,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 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) [2021-11-19 05:09:09,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-11-19 05:09:09,196 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2021-11-19 05:09:09,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:09,196 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-11-19 05:09:09,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-11-19 05:09:09,197 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-11-19 05:09:09,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 05:09:09,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:09,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:09,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:09:09,198 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:09,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:09,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1092272849, now seen corresponding path program 1 times [2021-11-19 05:09:09,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:09,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284516258] [2021-11-19 05:09:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:09,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:09,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-19 05:09:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:09,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:09,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284516258] [2021-11-19 05:09:09,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284516258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:09,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:09,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 05:09:09,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108684195] [2021-11-19 05:09:09,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:09,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:09:09,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:09,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:09:09,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:09:09,341 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 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) [2021-11-19 05:09:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:09,523 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-11-19 05:09:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:09:09,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 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) Word has length 17 [2021-11-19 05:09:09,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:09,526 INFO L225 Difference]: With dead ends: 39 [2021-11-19 05:09:09,527 INFO L226 Difference]: Without dead ends: 39 [2021-11-19 05:09:09,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:09:09,530 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 54 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:09,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 34 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:09:09,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-19 05:09:09,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2021-11-19 05:09:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 05:09:09,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-19 05:09:09,550 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 17 [2021-11-19 05:09:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:09,550 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-19 05:09:09,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 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) [2021-11-19 05:09:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-19 05:09:09,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 05:09:09,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:09,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:09,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:09:09,552 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:09,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash 699245839, now seen corresponding path program 1 times [2021-11-19 05:09:09,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:09,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400712016] [2021-11-19 05:09:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:09,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:09,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-19 05:09:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:09,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:09,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400712016] [2021-11-19 05:09:09,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400712016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:09,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:09,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:09:09,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706148165] [2021-11-19 05:09:09,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:09,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:09:09,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:09,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:09:09,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:09:09,676 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 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) [2021-11-19 05:09:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:09,839 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-11-19 05:09:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:09:09,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 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) Word has length 17 [2021-11-19 05:09:09,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:09,843 INFO L225 Difference]: With dead ends: 33 [2021-11-19 05:09:09,843 INFO L226 Difference]: Without dead ends: 30 [2021-11-19 05:09:09,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:09:09,845 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 47 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:09,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 34 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:09:09,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-19 05:09:09,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-11-19 05:09:09,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 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) [2021-11-19 05:09:09,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-11-19 05:09:09,851 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 17 [2021-11-19 05:09:09,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:09,851 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-11-19 05:09:09,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 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) [2021-11-19 05:09:09,851 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-11-19 05:09:09,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 05:09:09,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:09,852 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:09,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:09:09,853 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:09,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:09,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1853612607, now seen corresponding path program 1 times [2021-11-19 05:09:09,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:09,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903049341] [2021-11-19 05:09:09,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:09,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:10,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:10,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:10,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:10,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903049341] [2021-11-19 05:09:10,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903049341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:10,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:10,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 05:09:10,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891510449] [2021-11-19 05:09:10,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:10,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:09:10,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:10,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:09:10,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:09:10,038 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 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) [2021-11-19 05:09:10,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:10,192 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2021-11-19 05:09:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:09:10,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 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 [2021-11-19 05:09:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:10,196 INFO L225 Difference]: With dead ends: 41 [2021-11-19 05:09:10,197 INFO L226 Difference]: Without dead ends: 41 [2021-11-19 05:09:10,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:09:10,206 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:10,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 45 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:09:10,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-19 05:09:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-11-19 05:09:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 31 states have internal predecessors, (33), 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) [2021-11-19 05:09:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-11-19 05:09:10,217 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 19 [2021-11-19 05:09:10,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:10,217 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-11-19 05:09:10,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 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) [2021-11-19 05:09:10,218 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-11-19 05:09:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 05:09:10,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:10,219 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:10,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:09:10,219 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:10,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:10,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2111778045, now seen corresponding path program 1 times [2021-11-19 05:09:10,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:10,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112673496] [2021-11-19 05:09:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:10,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:10,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:10,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:10,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112673496] [2021-11-19 05:09:10,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112673496] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:09:10,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598719548] [2021-11-19 05:09:10,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:10,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:10,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:09:10,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:09:10,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:09:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:10,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-19 05:09:10,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:10,796 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 [2021-11-19 05:09:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:11,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:11,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598719548] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:09:11,756 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:09:11,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2021-11-19 05:09:11,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114538378] [2021-11-19 05:09:11,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:09:11,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-19 05:09:11,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:11,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-19 05:09:11,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2021-11-19 05:09:11,759 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 32 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 states have internal predecessors, (37), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:12,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:12,602 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-11-19 05:09:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:09:12,602 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 states have internal predecessors, (37), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-19 05:09:12,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:12,603 INFO L225 Difference]: With dead ends: 44 [2021-11-19 05:09:12,603 INFO L226 Difference]: Without dead ends: 44 [2021-11-19 05:09:12,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=240, Invalid=1652, Unknown=0, NotChecked=0, Total=1892 [2021-11-19 05:09:12,605 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 88 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:12,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 101 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:09:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-19 05:09:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-11-19 05:09:12,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 36 states have internal predecessors, (39), 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) [2021-11-19 05:09:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2021-11-19 05:09:12,618 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 19 [2021-11-19 05:09:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:12,618 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2021-11-19 05:09:12,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 states have internal predecessors, (37), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2021-11-19 05:09:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 05:09:12,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:12,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:12,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:09:12,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:12,833 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:12,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:12,834 INFO L85 PathProgramCache]: Analyzing trace with hash 538552420, now seen corresponding path program 1 times [2021-11-19 05:09:12,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:12,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391514935] [2021-11-19 05:09:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:12,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:12,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-19 05:09:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:12,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:12,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391514935] [2021-11-19 05:09:12,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391514935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:09:12,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:09:12,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:09:12,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501982908] [2021-11-19 05:09:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:09:12,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:09:12,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:12,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:09:12,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:09:12,943 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-19 05:09:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:13,055 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-11-19 05:09:13,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:09:13,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 22 [2021-11-19 05:09:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:13,056 INFO L225 Difference]: With dead ends: 42 [2021-11-19 05:09:13,056 INFO L226 Difference]: Without dead ends: 25 [2021-11-19 05:09:13,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:09:13,057 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:13,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 21 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:09:13,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-19 05:09:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-19 05:09:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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) [2021-11-19 05:09:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-11-19 05:09:13,061 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2021-11-19 05:09:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:13,062 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-11-19 05:09:13,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-19 05:09:13,062 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-11-19 05:09:13,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:09:13,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:13,063 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:13,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 05:09:13,063 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:13,064 INFO L85 PathProgramCache]: Analyzing trace with hash 402998846, now seen corresponding path program 2 times [2021-11-19 05:09:13,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:13,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685522102] [2021-11-19 05:09:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:13,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:13,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:13,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:13,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685522102] [2021-11-19 05:09:13,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685522102] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:09:13,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599323028] [2021-11-19 05:09:13,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:09:13,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:13,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:09:13,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:09:13,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 05:09:13,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:09:13,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:09:13,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-19 05:09:13,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:13,653 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 [2021-11-19 05:09:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:14,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:14,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599323028] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:09:14,889 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:09:14,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 35 [2021-11-19 05:09:14,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490973154] [2021-11-19 05:09:14,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:09:14,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-19 05:09:14,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:14,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-19 05:09:14,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1137, Unknown=0, NotChecked=0, Total=1260 [2021-11-19 05:09:14,892 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 36 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 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) [2021-11-19 05:09:16,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:16,606 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2021-11-19 05:09:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 05:09:16,607 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 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 24 [2021-11-19 05:09:16,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:16,608 INFO L225 Difference]: With dead ends: 40 [2021-11-19 05:09:16,608 INFO L226 Difference]: Without dead ends: 40 [2021-11-19 05:09:16,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=407, Invalid=2899, Unknown=0, NotChecked=0, Total=3306 [2021-11-19 05:09:16,610 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 72 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:16,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 121 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:09:16,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-19 05:09:16,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-19 05:09:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 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) [2021-11-19 05:09:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-11-19 05:09:16,615 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 24 [2021-11-19 05:09:16,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:16,616 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-11-19 05:09:16,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 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) [2021-11-19 05:09:16,616 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-11-19 05:09:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 05:09:16,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:16,617 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:16,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-19 05:09:16,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:16,836 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting cmemsetErr1REQUIRES_VIOLATION === [cmemsetErr0REQUIRES_VIOLATION, cmemsetErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-11-19 05:09:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1571563069, now seen corresponding path program 3 times [2021-11-19 05:09:16,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:09:16,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603968581] [2021-11-19 05:09:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:09:16,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:09:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 05:09:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:09:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:17,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:09:17,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603968581] [2021-11-19 05:09:17,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603968581] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:09:17,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901177049] [2021-11-19 05:09:17,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:09:17,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:17,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:09:17,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:09:17,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 05:09:17,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-19 05:09:17,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:09:17,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-19 05:09:17,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:17,775 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 [2021-11-19 05:09:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:18,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:19,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901177049] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:09:19,846 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:09:19,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 51 [2021-11-19 05:09:19,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826214645] [2021-11-19 05:09:19,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:09:19,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-19 05:09:19,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:09:19,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-19 05:09:19,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2400, Unknown=0, NotChecked=0, Total=2652 [2021-11-19 05:09:19,852 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 52 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 49 states have internal predecessors, (93), 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) [2021-11-19 05:09:22,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:22,164 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2021-11-19 05:09:22,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 05:09:22,164 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 49 states have internal predecessors, (93), 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 39 [2021-11-19 05:09:22,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:22,165 INFO L225 Difference]: With dead ends: 45 [2021-11-19 05:09:22,165 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 05:09:22,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=764, Invalid=5878, Unknown=0, NotChecked=0, Total=6642 [2021-11-19 05:09:22,169 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 67 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:22,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 129 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:09:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 05:09:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 05:09:22,170 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) [2021-11-19 05:09:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 05:09:22,170 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-11-19 05:09:22,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:22,170 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 05:09:22,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 49 states have internal predecessors, (93), 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) [2021-11-19 05:09:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 05:09:22,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 05:09:22,174 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cmemsetErr0REQUIRES_VIOLATION (2 of 3 remaining) [2021-11-19 05:09:22,175 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cmemsetErr1REQUIRES_VIOLATION (1 of 3 remaining) [2021-11-19 05:09:22,175 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2021-11-19 05:09:22,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:09:22,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:09:22,379 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:22,380 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:09:22,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:09:22 BoogieIcfgContainer [2021-11-19 05:09:22,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:09:22,383 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:09:22,383 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:09:22,383 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:09:22,384 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:09:08" (3/4) ... [2021-11-19 05:09:22,388 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 05:09:22,398 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-11-19 05:09:22,398 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-11-19 05:09:22,398 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-11-19 05:09:22,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-11-19 05:09:22,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-11-19 05:09:22,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-11-19 05:09:22,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemset [2021-11-19 05:09:22,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-11-19 05:09:22,403 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-19 05:09:22,404 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-19 05:09:22,404 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 05:09:22,404 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 05:09:22,436 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:09:22,439 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:09:22,440 INFO L158 Benchmark]: Toolchain (without parser) took 15338.32ms. Allocated memory was 111.1MB in the beginning and 169.9MB in the end (delta: 58.7MB). Free memory was 80.7MB in the beginning and 63.0MB in the end (delta: 17.7MB). Peak memory consumption was 74.6MB. Max. memory is 16.1GB. [2021-11-19 05:09:22,440 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:09:22,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.86ms. Allocated memory is still 111.1MB. Free memory was 80.4MB in the beginning and 79.2MB in the end (delta: 1.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 05:09:22,441 INFO L158 Benchmark]: Boogie Preprocessor took 48.66ms. Allocated memory is still 111.1MB. Free memory was 79.2MB in the beginning and 76.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:09:22,442 INFO L158 Benchmark]: RCFGBuilder took 517.23ms. Allocated memory is still 111.1MB. Free memory was 76.8MB in the beginning and 59.7MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-19 05:09:22,442 INFO L158 Benchmark]: TraceAbstraction took 14302.50ms. Allocated memory was 111.1MB in the beginning and 169.9MB in the end (delta: 58.7MB). Free memory was 59.1MB in the beginning and 65.7MB in the end (delta: -6.6MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. [2021-11-19 05:09:22,443 INFO L158 Benchmark]: Witness Printer took 56.41ms. Allocated memory is still 169.9MB. Free memory was 65.7MB in the beginning and 63.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:09:22,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 406.86ms. Allocated memory is still 111.1MB. Free memory was 80.4MB in the beginning and 79.2MB in the end (delta: 1.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.66ms. Allocated memory is still 111.1MB. Free memory was 79.2MB in the beginning and 76.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 517.23ms. Allocated memory is still 111.1MB. Free memory was 76.8MB in the beginning and 59.7MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 14302.50ms. Allocated memory was 111.1MB in the beginning and 169.9MB in the end (delta: 58.7MB). Free memory was 59.1MB in the beginning and 65.7MB in the end (delta: -6.6MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. * Witness Printer took 56.41ms. Allocated memory is still 169.9MB. Free memory was 65.7MB in the beginning and 63.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: 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, 43 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 14.2s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 519 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 518 mSDsluCounter, 590 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 418 mSDsCounter, 285 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2041 IncrementalHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 285 mSolverCounterUnsat, 172 mSDtfsCounter, 2041 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 363 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2398 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 21 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 267 NumberOfCodeBlocks, 267 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 334 ConstructedInterpolants, 0 QuantifiedInterpolants, 3749 SizeOfPredicates, 40 NumberOfNonLiveVariables, 413 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 23/215 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-19 05:09:22,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c8efd81-91c2-439a-b550-5e6370ff1b9e/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE