./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF --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 58596999bba5cc256a412be61e4f9e3e6d264c81e8972a76406a7a850d8c4606 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:52:41,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:52:41,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:52:42,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:52:42,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:52:42,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:52:42,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:52:42,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:52:42,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:52:42,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:52:42,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:52:42,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:52:42,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:52:42,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:52:42,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:52:42,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:52:42,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:52:42,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:52:42,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:52:42,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:52:42,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:52:42,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:52:42,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:52:42,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:52:42,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:52:42,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:52:42,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:52:42,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:52:42,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:52:42,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:52:42,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:52:42,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:52:42,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:52:42,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:52:42,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:52:42,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:52:42,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:52:42,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:52:42,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:52:42,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:52:42,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:52:42,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 06:52:42,112 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:52:42,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:52:42,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:52:42,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:52:42,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:52:42,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:52:42,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:52:42,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:52:42,115 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:52:42,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:52:42,115 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:52:42,116 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:52:42,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:52:42,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:52:42,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:52:42,117 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:52:42,117 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:52:42,117 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:52:42,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:52:42,117 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:52:42,118 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:52:42,118 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:52:42,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:52:42,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:52:42,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:52:42,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:52:42,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:52:42,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:52:42,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:52:42,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:52:42,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:52:42,120 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_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58596999bba5cc256a412be61e4f9e3e6d264c81e8972a76406a7a850d8c4606 [2021-11-20 06:52:42,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:52:42,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:52:42,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:52:42,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:52:42,469 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:52:42,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/memsafety-ext3/scopes4-1.c [2021-11-20 06:52:42,547 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/data/04ded0b7f/b0570283e889409fa4daff8539bcc294/FLAGa45e73ece [2021-11-20 06:52:43,059 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:52:43,060 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/sv-benchmarks/c/memsafety-ext3/scopes4-1.c [2021-11-20 06:52:43,077 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/data/04ded0b7f/b0570283e889409fa4daff8539bcc294/FLAGa45e73ece [2021-11-20 06:52:43,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/data/04ded0b7f/b0570283e889409fa4daff8539bcc294 [2021-11-20 06:52:43,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:52:43,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:52:43,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:52:43,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:52:43,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:52:43,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:52:43" (1/1) ... [2021-11-20 06:52:43,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214873b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:43, skipping insertion in model container [2021-11-20 06:52:43,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:52:43" (1/1) ... [2021-11-20 06:52:43,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:52:43,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:52:43,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:52:43,646 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:52:43,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:52:43,678 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:52:43,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:43 WrapperNode [2021-11-20 06:52:43,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:52:43,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:52:43,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:52:43,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:52:43,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:43" (1/1) ... [2021-11-20 06:52:43,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:43" (1/1) ... [2021-11-20 06:52:43,720 INFO L137 Inliner]: procedures = 11, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 29 [2021-11-20 06:52:43,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:52:43,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:52:43,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:52:43,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:52:43,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:43" (1/1) ... [2021-11-20 06:52:43,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:43" (1/1) ... [2021-11-20 06:52:43,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:43" (1/1) ... [2021-11-20 06:52:43,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:43" (1/1) ... [2021-11-20 06:52:43,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:43" (1/1) ... [2021-11-20 06:52:43,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:43" (1/1) ... [2021-11-20 06:52:43,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:43" (1/1) ... [2021-11-20 06:52:43,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:52:43,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:52:43,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:52:43,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:52:43,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:43" (1/1) ... [2021-11-20 06:52:43,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:52:43,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:52:43,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:52:43,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:52:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:52:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:52:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:52:43,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:52:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:52:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:52:43,903 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:52:43,904 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:52:43,997 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:52:44,002 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:52:44,003 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:52:44,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:52:44 BoogieIcfgContainer [2021-11-20 06:52:44,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:52:44,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:52:44,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:52:44,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:52:44,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:52:43" (1/3) ... [2021-11-20 06:52:44,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576c4765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:52:44, skipping insertion in model container [2021-11-20 06:52:44,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:52:43" (2/3) ... [2021-11-20 06:52:44,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576c4765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:52:44, skipping insertion in model container [2021-11-20 06:52:44,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:52:44" (3/3) ... [2021-11-20 06:52:44,015 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes4-1.c [2021-11-20 06:52:44,020 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:52:44,021 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-20 06:52:44,069 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:52:44,076 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 [2021-11-20 06:52:44,076 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-20 06:52:44,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 15 states have internal predecessors, (15), 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) [2021-11-20 06:52:44,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 06:52:44,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:52:44,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 06:52:44,109 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-11-20 06:52:44,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:52:44,115 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-20 06:52:44,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:52:44,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470889875] [2021-11-20 06:52:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:52:44,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:52:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:52:44,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:52:44,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470889875] [2021-11-20 06:52:44,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470889875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:52:44,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:52:44,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 06:52:44,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521651117] [2021-11-20 06:52:44,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:52:44,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:52:44,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:52:44,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:52:44,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:52:44,388 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 15 states have internal predecessors, (15), 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-20 06:52:44,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:52:44,418 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-11-20 06:52:44,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:52:44,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2021-11-20 06:52:44,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:52:44,428 INFO L225 Difference]: With dead ends: 15 [2021-11-20 06:52:44,428 INFO L226 Difference]: Without dead ends: 13 [2021-11-20 06:52:44,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:52:44,433 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:52:44,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 6 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:52:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-20 06:52:44,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-20 06:52:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 12 states have internal predecessors, (12), 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) [2021-11-20 06:52:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-11-20 06:52:44,538 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 3 [2021-11-20 06:52:44,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:52:44,539 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-11-20 06:52:44,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-20 06:52:44,539 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-11-20 06:52:44,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 06:52:44,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:52:44,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 06:52:44,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:52:44,540 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-11-20 06:52:44,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:52:44,541 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-20 06:52:44,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:52:44,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219779016] [2021-11-20 06:52:44,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:52:44,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:52:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:52:44,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:52:44,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219779016] [2021-11-20 06:52:44,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219779016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:52:44,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:52:44,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 06:52:44,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353887975] [2021-11-20 06:52:44,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:52:44,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:52:44,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:52:44,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:52:44,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:52:44,614 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-20 06:52:44,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:52:44,624 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-11-20 06:52:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:52:44,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2021-11-20 06:52:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:52:44,625 INFO L225 Difference]: With dead ends: 12 [2021-11-20 06:52:44,625 INFO L226 Difference]: Without dead ends: 12 [2021-11-20 06:52:44,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:52:44,627 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:52:44,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 7 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:52:44,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-20 06:52:44,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-20 06:52:44,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 11 states have internal predecessors, (11), 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) [2021-11-20 06:52:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-11-20 06:52:44,631 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 3 [2021-11-20 06:52:44,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:52:44,632 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-11-20 06:52:44,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-20 06:52:44,632 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-11-20 06:52:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:52:44,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:52:44,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:52:44,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:52:44,634 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-11-20 06:52:44,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:52:44,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1803025956, now seen corresponding path program 1 times [2021-11-20 06:52:44,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:52:44,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213751260] [2021-11-20 06:52:44,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:52:44,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:52:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:52:44,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:52:44,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213751260] [2021-11-20 06:52:44,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213751260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:52:44,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:52:44,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:52:44,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114005892] [2021-11-20 06:52:44,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:52:44,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:52:44,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:52:44,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:52:44,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:52:44,705 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) [2021-11-20 06:52:44,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:52:44,779 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-11-20 06:52:44,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:52:44,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) Word has length 7 [2021-11-20 06:52:44,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:52:44,780 INFO L225 Difference]: With dead ends: 11 [2021-11-20 06:52:44,780 INFO L226 Difference]: Without dead ends: 11 [2021-11-20 06:52:44,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:52:44,783 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:52:44,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 2 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:52:44,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-20 06:52:44,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-20 06:52:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 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) [2021-11-20 06:52:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-11-20 06:52:44,787 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 7 [2021-11-20 06:52:44,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:52:44,787 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-11-20 06:52:44,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) [2021-11-20 06:52:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-11-20 06:52:44,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:52:44,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:52:44,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:52:44,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:52:44,789 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-11-20 06:52:44,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:52:44,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1803025957, now seen corresponding path program 1 times [2021-11-20 06:52:44,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:52:44,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282669817] [2021-11-20 06:52:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:52:44,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:52:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:52:44,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:52:44,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282669817] [2021-11-20 06:52:44,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282669817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:52:44,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:52:44,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:52:44,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978033996] [2021-11-20 06:52:44,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:52:44,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:52:44,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:52:44,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:52:44,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:52:44,991 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-11-20 06:52:45,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:52:45,095 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2021-11-20 06:52:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:52:45,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) Word has length 7 [2021-11-20 06:52:45,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:52:45,097 INFO L225 Difference]: With dead ends: 10 [2021-11-20 06:52:45,098 INFO L226 Difference]: Without dead ends: 10 [2021-11-20 06:52:45,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:52:45,103 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:52:45,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 4 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:52:45,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-20 06:52:45,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-20 06:52:45,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 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) [2021-11-20 06:52:45,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2021-11-20 06:52:45,107 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 7 [2021-11-20 06:52:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:52:45,108 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2021-11-20 06:52:45,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-11-20 06:52:45,108 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2021-11-20 06:52:45,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:52:45,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:52:45,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:52:45,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:52:45,109 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-11-20 06:52:45,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:52:45,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1836122917, now seen corresponding path program 1 times [2021-11-20 06:52:45,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:52:45,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184257343] [2021-11-20 06:52:45,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:52:45,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:52:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:52:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:52:45,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:52:45,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184257343] [2021-11-20 06:52:45,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184257343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:52:45,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:52:45,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:52:45,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721485307] [2021-11-20 06:52:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:52:45,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:52:45,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:52:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:52:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:52:45,184 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-20 06:52:45,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:52:45,194 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-11-20 06:52:45,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:52:45,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2021-11-20 06:52:45,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:52:45,196 INFO L225 Difference]: With dead ends: 9 [2021-11-20 06:52:45,196 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 06:52:45,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:52:45,202 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:52:45,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:52:45,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 06:52:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 06:52:45,204 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) [2021-11-20 06:52:45,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 06:52:45,204 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-11-20 06:52:45,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:52:45,204 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:52:45,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-11-20 06:52:45,205 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 06:52:45,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 06:52:45,210 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (4 of 5 remaining) [2021-11-20 06:52:45,211 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (3 of 5 remaining) [2021-11-20 06:52:45,211 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (2 of 5 remaining) [2021-11-20 06:52:45,217 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION (1 of 5 remaining) [2021-11-20 06:52:45,217 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2021-11-20 06:52:45,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:52:45,221 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-20 06:52:45,223 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:52:45,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:52:45 BoogieIcfgContainer [2021-11-20 06:52:45,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:52:45,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:52:45,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:52:45,227 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:52:45,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:52:44" (3/4) ... [2021-11-20 06:52:45,236 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 06:52:45,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-20 06:52:45,255 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-20 06:52:45,255 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-20 06:52:45,255 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 06:52:45,295 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:52:45,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:52:45,295 INFO L158 Benchmark]: Toolchain (without parser) took 1866.08ms. Allocated memory was 88.1MB in the beginning and 117.4MB in the end (delta: 29.4MB). Free memory was 52.7MB in the beginning and 61.6MB in the end (delta: -8.9MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2021-11-20 06:52:45,298 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory was 68.6MB in the beginning and 68.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:52:45,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.13ms. Allocated memory was 88.1MB in the beginning and 117.4MB in the end (delta: 29.4MB). Free memory was 52.5MB in the beginning and 94.0MB in the end (delta: -41.5MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-11-20 06:52:45,299 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.60ms. Allocated memory is still 117.4MB. Free memory was 94.0MB in the beginning and 92.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:52:45,299 INFO L158 Benchmark]: Boogie Preprocessor took 40.53ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 91.6MB in the end (delta: 862.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:52:45,300 INFO L158 Benchmark]: RCFGBuilder took 242.53ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 82.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:52:45,300 INFO L158 Benchmark]: TraceAbstraction took 1218.75ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 63.8MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-20 06:52:45,300 INFO L158 Benchmark]: Witness Printer took 68.36ms. Allocated memory is still 117.4MB. Free memory was 63.8MB in the beginning and 61.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:52:45,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory was 68.6MB in the beginning and 68.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.13ms. Allocated memory was 88.1MB in the beginning and 117.4MB in the end (delta: 29.4MB). Free memory was 52.5MB in the beginning and 94.0MB in the end (delta: -41.5MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.60ms. Allocated memory is still 117.4MB. Free memory was 94.0MB in the beginning and 92.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.53ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 91.6MB in the end (delta: 862.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 242.53ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 82.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1218.75ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 63.8MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 68.36ms. Allocated memory is still 117.4MB. Free memory was 63.8MB in the beginning and 61.6MB in the end (delta: 2.1MB). 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: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: 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 1 procedures, 16 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 25 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 21, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 166 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-20 06:52:45,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f244ab-bb38-4750-9fdb-cee4535c12ce/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE