./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD --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 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD --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 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:01:23,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:01:23,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:01:23,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:01:23,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:01:23,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:01:23,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:01:23,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:01:23,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:01:23,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:01:23,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:01:23,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:01:23,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:01:23,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:01:23,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:01:23,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:01:23,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:01:23,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:01:23,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:01:23,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:01:23,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:01:23,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:01:23,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:01:23,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:01:23,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:01:23,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:01:23,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:01:23,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:01:23,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:01:23,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:01:23,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:01:23,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:01:23,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:01:23,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:01:23,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:01:23,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:01:23,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:01:23,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:01:23,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:01:23,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:01:23,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:01:23,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:01:23,862 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:01:23,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:01:23,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:01:23,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:01:23,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:01:23,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:01:23,877 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:01:23,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:01:23,878 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:01:23,878 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:01:23,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:01:23,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:01:23,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:01:23,880 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:01:23,880 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:01:23,881 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:01:23,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:01:23,881 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:01:23,881 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:01:23,882 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:01:23,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:01:23,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:01:23,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:01:23,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:01:23,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:01:23,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:01:23,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:01:23,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:01:23,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:01:23,886 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_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2021-10-28 23:01:24,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:01:24,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:01:24,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:01:24,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:01:24,229 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:01:24,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-10-28 23:01:24,354 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/data/f2bafa1b4/f520aef6c6c2480a8290ed8e9f103403/FLAG6bea0b7bd [2021-10-28 23:01:25,012 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:01:25,013 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-10-28 23:01:25,030 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/data/f2bafa1b4/f520aef6c6c2480a8290ed8e9f103403/FLAG6bea0b7bd [2021-10-28 23:01:25,254 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/data/f2bafa1b4/f520aef6c6c2480a8290ed8e9f103403 [2021-10-28 23:01:25,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:01:25,262 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:01:25,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:01:25,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:01:25,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:01:25,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:01:25" (1/1) ... [2021-10-28 23:01:25,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122dc520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:25, skipping insertion in model container [2021-10-28 23:01:25,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:01:25" (1/1) ... [2021-10-28 23:01:25,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:01:25,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:01:25,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:01:25,762 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:01:25,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:01:25,857 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:01:25,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:25 WrapperNode [2021-10-28 23:01:25,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:01:25,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:01:25,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:01:25,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:01:25,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:25" (1/1) ... [2021-10-28 23:01:25,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:25" (1/1) ... [2021-10-28 23:01:25,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:25" (1/1) ... [2021-10-28 23:01:25,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:25" (1/1) ... [2021-10-28 23:01:25,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:25" (1/1) ... [2021-10-28 23:01:25,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:25" (1/1) ... [2021-10-28 23:01:25,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:25" (1/1) ... [2021-10-28 23:01:25,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:01:25,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:01:25,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:01:25,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:01:25,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:25" (1/1) ... [2021-10-28 23:01:25,938 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:01:25,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:01:25,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:01:25,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:01:26,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:01:26,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:01:26,026 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:01:26,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:01:26,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:01:26,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:01:26,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:01:26,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:01:26,029 INFO L138 BoogieDeclarations]: Found implementation of procedure push [2021-10-28 23:01:26,029 INFO L138 BoogieDeclarations]: Found implementation of procedure pop [2021-10-28 23:01:26,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:01:26,030 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:01:26,030 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:01:26,030 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:01:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:01:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:01:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:01:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:01:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:01:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:01:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:01:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:01:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:01:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:01:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:01:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:01:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:01:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:01:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:01:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:01:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:01:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:01:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:01:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:01:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:01:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:01:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:01:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:01:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:01:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:01:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:01:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:01:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:01:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:01:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:01:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:01:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:01:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:01:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:01:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:01:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:01:26,038 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:01:26,038 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:01:26,039 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:01:26,039 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:01:26,039 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:01:26,039 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:01:26,039 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:01:26,040 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:01:26,040 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:01:26,041 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:01:26,041 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:01:26,041 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:01:26,041 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:01:26,041 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:01:26,042 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:01:26,042 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:01:26,042 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:01:26,044 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:01:26,044 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:01:26,045 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:01:26,045 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:01:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:01:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:01:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:01:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:01:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:01:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:01:26,047 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:01:26,047 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:01:26,047 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:01:26,047 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:01:26,047 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:01:26,047 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:01:26,048 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:01:26,048 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:01:26,049 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:01:26,049 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:01:26,049 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:01:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:01:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:01:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:01:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:01:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:01:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:01:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:01:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:01:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:01:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:01:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:01:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:01:26,052 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:01:26,052 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:01:26,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:01:26,052 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:01:26,052 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:01:26,053 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:01:26,053 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:01:26,053 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:01:26,053 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:01:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:01:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:01:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:01:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:01:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:01:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:01:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:01:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:01:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:01:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:01:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:01:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:01:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:01:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:01:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure push [2021-10-28 23:01:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:01:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:01:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:01:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure pop [2021-10-28 23:01:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:01:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:01:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:01:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:01:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:01:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:01:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:01:26,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:01:26,876 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-28 23:01:26,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:26 BoogieIcfgContainer [2021-10-28 23:01:26,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:01:26,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:01:26,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:01:26,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:01:26,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:01:25" (1/3) ... [2021-10-28 23:01:26,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775b60a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:01:26, skipping insertion in model container [2021-10-28 23:01:26,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:25" (2/3) ... [2021-10-28 23:01:26,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775b60a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:01:26, skipping insertion in model container [2021-10-28 23:01:26,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:26" (3/3) ... [2021-10-28 23:01:26,902 INFO L111 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2021-10-28 23:01:26,912 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:01:26,912 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-28 23:01:26,983 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:01:26,995 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:01:26,995 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-28 23:01:27,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 67 states have internal predecessors, (85), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:01:27,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:01:27,026 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:27,027 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:27,027 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:27,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:27,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1846299228, now seen corresponding path program 1 times [2021-10-28 23:01:27,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:27,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771804027] [2021-10-28 23:01:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:27,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:27,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:01:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:27,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:27,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771804027] [2021-10-28 23:01:27,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771804027] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:27,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:27,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:01:27,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385477134] [2021-10-28 23:01:27,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:01:27,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:27,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:01:27,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:01:27,432 INFO L87 Difference]: Start difference. First operand has 74 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 67 states have internal predecessors, (85), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:27,709 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2021-10-28 23:01:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:01:27,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-10-28 23:01:27,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:27,728 INFO L225 Difference]: With dead ends: 92 [2021-10-28 23:01:27,728 INFO L226 Difference]: Without dead ends: 89 [2021-10-28 23:01:27,730 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:01:27,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-28 23:01:27,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 71. [2021-10-28 23:01:27,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 65 states have internal predecessors, (81), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:01:27,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2021-10-28 23:01:27,782 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 8 [2021-10-28 23:01:27,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:27,782 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2021-10-28 23:01:27,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:27,783 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2021-10-28 23:01:27,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:01:27,784 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:27,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:27,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:01:27,784 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:27,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:27,785 INFO L85 PathProgramCache]: Analyzing trace with hash 451849005, now seen corresponding path program 1 times [2021-10-28 23:01:27,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:27,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676056574] [2021-10-28 23:01:27,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:27,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:27,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:01:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:27,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:27,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676056574] [2021-10-28 23:01:27,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676056574] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:27,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:27,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:27,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608822682] [2021-10-28 23:01:27,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:27,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:27,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:27,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:27,942 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:28,279 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2021-10-28 23:01:28,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:01:28,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 23:01:28,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:28,285 INFO L225 Difference]: With dead ends: 91 [2021-10-28 23:01:28,285 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 23:01:28,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:28,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 23:01:28,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2021-10-28 23:01:28,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 45 states have (on average 1.8222222222222222) internal successors, (82), 66 states have internal predecessors, (82), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:01:28,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2021-10-28 23:01:28,310 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 10 [2021-10-28 23:01:28,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:28,310 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2021-10-28 23:01:28,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:28,311 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2021-10-28 23:01:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:01:28,312 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:28,312 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:28,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:01:28,313 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:28,314 INFO L85 PathProgramCache]: Analyzing trace with hash 451908587, now seen corresponding path program 1 times [2021-10-28 23:01:28,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:28,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147263878] [2021-10-28 23:01:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:28,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:01:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:28,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:28,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147263878] [2021-10-28 23:01:28,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147263878] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:28,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:28,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:01:28,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134706823] [2021-10-28 23:01:28,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:28,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:28,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:28,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:28,499 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:28,815 INFO L93 Difference]: Finished difference Result 135 states and 176 transitions. [2021-10-28 23:01:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:01:28,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 23:01:28,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:28,818 INFO L225 Difference]: With dead ends: 135 [2021-10-28 23:01:28,818 INFO L226 Difference]: Without dead ends: 135 [2021-10-28 23:01:28,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:28,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-28 23:01:28,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 108. [2021-10-28 23:01:28,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.8311688311688312) internal successors, (141), 99 states have internal predecessors, (141), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 23:01:28,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2021-10-28 23:01:28,830 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 10 [2021-10-28 23:01:28,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:28,831 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2021-10-28 23:01:28,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:28,831 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2021-10-28 23:01:28,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:01:28,832 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:28,832 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:28,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:01:28,833 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:28,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:28,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1124262917, now seen corresponding path program 1 times [2021-10-28 23:01:28,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:28,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927149475] [2021-10-28 23:01:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:28,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:28,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:01:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:28,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:28,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927149475] [2021-10-28 23:01:28,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927149475] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:28,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:28,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:01:28,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159917437] [2021-10-28 23:01:28,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:28,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:28,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:28,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:28,965 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:29,204 INFO L93 Difference]: Finished difference Result 149 states and 214 transitions. [2021-10-28 23:01:29,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:29,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:01:29,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:29,215 INFO L225 Difference]: With dead ends: 149 [2021-10-28 23:01:29,216 INFO L226 Difference]: Without dead ends: 144 [2021-10-28 23:01:29,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:29,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-28 23:01:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 126. [2021-10-28 23:01:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 89 states have (on average 1.7752808988764044) internal successors, (158), 115 states have internal predecessors, (158), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (15), 5 states have call predecessors, (15), 9 states have call successors, (15) [2021-10-28 23:01:29,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 183 transitions. [2021-10-28 23:01:29,247 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 183 transitions. Word has length 11 [2021-10-28 23:01:29,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:29,247 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 183 transitions. [2021-10-28 23:01:29,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:29,247 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 183 transitions. [2021-10-28 23:01:29,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:01:29,248 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:29,248 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:29,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:01:29,258 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting pushErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:29,259 INFO L85 PathProgramCache]: Analyzing trace with hash 649350680, now seen corresponding path program 1 times [2021-10-28 23:01:29,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:29,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822879660] [2021-10-28 23:01:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:29,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:29,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:01:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:29,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:29,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822879660] [2021-10-28 23:01:29,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822879660] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:29,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:29,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:29,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862871218] [2021-10-28 23:01:29,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:01:29,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:29,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:01:29,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:29,437 INFO L87 Difference]: Start difference. First operand 126 states and 183 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:29,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:29,900 INFO L93 Difference]: Finished difference Result 174 states and 254 transitions. [2021-10-28 23:01:29,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:01:29,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 23:01:29,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:29,904 INFO L225 Difference]: With dead ends: 174 [2021-10-28 23:01:29,904 INFO L226 Difference]: Without dead ends: 174 [2021-10-28 23:01:29,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:01:29,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-28 23:01:29,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 153. [2021-10-28 23:01:29,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 112 states have (on average 1.7767857142857142) internal successors, (199), 139 states have internal predecessors, (199), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (21), 7 states have call predecessors, (21), 11 states have call successors, (21) [2021-10-28 23:01:29,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 232 transitions. [2021-10-28 23:01:29,923 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 232 transitions. Word has length 13 [2021-10-28 23:01:29,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:29,924 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 232 transitions. [2021-10-28 23:01:29,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:29,925 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 232 transitions. [2021-10-28 23:01:29,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:01:29,925 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:29,926 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:29,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:01:29,926 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting pushErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:29,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:29,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1870609254, now seen corresponding path program 1 times [2021-10-28 23:01:29,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:29,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247533792] [2021-10-28 23:01:29,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:29,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:30,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:01:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:30,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:30,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247533792] [2021-10-28 23:01:30,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247533792] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:30,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:30,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:01:30,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388940630] [2021-10-28 23:01:30,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:30,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:30,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:30,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:30,037 INFO L87 Difference]: Start difference. First operand 153 states and 232 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:30,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:30,509 INFO L93 Difference]: Finished difference Result 265 states and 403 transitions. [2021-10-28 23:01:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:01:30,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 23:01:30,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:30,514 INFO L225 Difference]: With dead ends: 265 [2021-10-28 23:01:30,514 INFO L226 Difference]: Without dead ends: 265 [2021-10-28 23:01:30,514 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:30,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-28 23:01:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 238. [2021-10-28 23:01:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 189 states have (on average 1.7195767195767195) internal successors, (325), 216 states have internal predecessors, (325), 17 states have call successors, (17), 12 states have call predecessors, (17), 14 states have return successors, (34), 10 states have call predecessors, (34), 16 states have call successors, (34) [2021-10-28 23:01:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 376 transitions. [2021-10-28 23:01:30,538 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 376 transitions. Word has length 13 [2021-10-28 23:01:30,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:30,538 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 376 transitions. [2021-10-28 23:01:30,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:30,539 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 376 transitions. [2021-10-28 23:01:30,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:01:30,539 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:30,540 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:30,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:01:30,540 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting pushErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:30,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:30,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1870609253, now seen corresponding path program 1 times [2021-10-28 23:01:30,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:30,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380304702] [2021-10-28 23:01:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:30,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:01:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:30,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:30,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380304702] [2021-10-28 23:01:30,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380304702] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:30,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:30,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:01:30,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956424930] [2021-10-28 23:01:30,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:30,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:30,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:30,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:30,690 INFO L87 Difference]: Start difference. First operand 238 states and 376 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:31,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:31,151 INFO L93 Difference]: Finished difference Result 329 states and 503 transitions. [2021-10-28 23:01:31,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:01:31,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 23:01:31,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:31,157 INFO L225 Difference]: With dead ends: 329 [2021-10-28 23:01:31,157 INFO L226 Difference]: Without dead ends: 329 [2021-10-28 23:01:31,157 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:31,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-10-28 23:01:31,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 305. [2021-10-28 23:01:31,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 253 states have (on average 1.683794466403162) internal successors, (426), 278 states have internal predecessors, (426), 17 states have call successors, (17), 17 states have call predecessors, (17), 19 states have return successors, (34), 10 states have call predecessors, (34), 16 states have call successors, (34) [2021-10-28 23:01:31,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 477 transitions. [2021-10-28 23:01:31,183 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 477 transitions. Word has length 13 [2021-10-28 23:01:31,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:31,184 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 477 transitions. [2021-10-28 23:01:31,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:31,184 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 477 transitions. [2021-10-28 23:01:31,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:01:31,185 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:31,186 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:31,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:01:31,186 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting pushErr4REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:31,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:31,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2140662271, now seen corresponding path program 1 times [2021-10-28 23:01:31,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:31,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345376731] [2021-10-28 23:01:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:31,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:31,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:01:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:31,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:31,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345376731] [2021-10-28 23:01:31,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345376731] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:31,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:31,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:31,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268108547] [2021-10-28 23:01:31,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:01:31,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:31,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:01:31,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:31,314 INFO L87 Difference]: Start difference. First operand 305 states and 477 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:31,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:31,615 INFO L93 Difference]: Finished difference Result 270 states and 379 transitions. [2021-10-28 23:01:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:01:31,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-28 23:01:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:31,619 INFO L225 Difference]: With dead ends: 270 [2021-10-28 23:01:31,620 INFO L226 Difference]: Without dead ends: 270 [2021-10-28 23:01:31,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:01:31,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-28 23:01:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 235. [2021-10-28 23:01:31,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 192 states have (on average 1.5989583333333333) internal successors, (307), 211 states have internal predecessors, (307), 14 states have call successors, (14), 14 states have call predecessors, (14), 17 states have return successors, (24), 9 states have call predecessors, (24), 13 states have call successors, (24) [2021-10-28 23:01:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 345 transitions. [2021-10-28 23:01:31,645 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 345 transitions. Word has length 14 [2021-10-28 23:01:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:31,645 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 345 transitions. [2021-10-28 23:01:31,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:31,646 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 345 transitions. [2021-10-28 23:01:31,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:01:31,651 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:31,651 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:31,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:01:31,652 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting popErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:31,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:31,653 INFO L85 PathProgramCache]: Analyzing trace with hash 406451957, now seen corresponding path program 1 times [2021-10-28 23:01:31,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:31,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359971252] [2021-10-28 23:01:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:31,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:01:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:31,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:31,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359971252] [2021-10-28 23:01:31,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359971252] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:31,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:31,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:01:31,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616452683] [2021-10-28 23:01:31,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:01:31,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:31,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:01:31,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:01:31,813 INFO L87 Difference]: Start difference. First operand 235 states and 345 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:32,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:32,150 INFO L93 Difference]: Finished difference Result 402 states and 560 transitions. [2021-10-28 23:01:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:01:32,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-10-28 23:01:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:32,155 INFO L225 Difference]: With dead ends: 402 [2021-10-28 23:01:32,156 INFO L226 Difference]: Without dead ends: 402 [2021-10-28 23:01:32,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:01:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-10-28 23:01:32,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 376. [2021-10-28 23:01:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 305 states have (on average 1.498360655737705) internal successors, (457), 336 states have internal predecessors, (457), 24 states have call successors, (24), 24 states have call predecessors, (24), 35 states have return successors, (50), 15 states have call predecessors, (50), 23 states have call successors, (50) [2021-10-28 23:01:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 531 transitions. [2021-10-28 23:01:32,181 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 531 transitions. Word has length 15 [2021-10-28 23:01:32,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:32,182 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 531 transitions. [2021-10-28 23:01:32,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:32,182 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 531 transitions. [2021-10-28 23:01:32,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:01:32,184 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:32,184 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:32,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:01:32,185 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:32,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:32,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1475656894, now seen corresponding path program 1 times [2021-10-28 23:01:32,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:32,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047314883] [2021-10-28 23:01:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:32,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:01:32,211 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:01:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:01:32,288 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:01:32,288 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:01:32,289 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr5ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:01:32,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr0REQUIRES_VIOLATION [2021-10-28 23:01:32,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr1REQUIRES_VIOLATION [2021-10-28 23:01:32,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr2REQUIRES_VIOLATION [2021-10-28 23:01:32,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr3REQUIRES_VIOLATION [2021-10-28 23:01:32,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr4REQUIRES_VIOLATION [2021-10-28 23:01:32,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr5REQUIRES_VIOLATION [2021-10-28 23:01:32,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr6REQUIRES_VIOLATION [2021-10-28 23:01:32,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr7REQUIRES_VIOLATION [2021-10-28 23:01:32,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr0REQUIRES_VIOLATION [2021-10-28 23:01:32,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr1REQUIRES_VIOLATION [2021-10-28 23:01:32,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr2REQUIRES_VIOLATION [2021-10-28 23:01:32,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr3REQUIRES_VIOLATION [2021-10-28 23:01:32,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr4REQUIRES_VIOLATION [2021-10-28 23:01:32,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr5REQUIRES_VIOLATION [2021-10-28 23:01:32,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:01:32,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:01:32,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:01:32,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:01:32,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:01:32,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:01:32,302 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:32,305 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:01:32,358 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 23:01:32,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:01:32 BoogieIcfgContainer [2021-10-28 23:01:32,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:01:32,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:01:32,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:01:32,404 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:01:32,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:26" (3/4) ... [2021-10-28 23:01:32,408 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:01:32,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:01:32,410 INFO L168 Benchmark]: Toolchain (without parser) took 7146.75 ms. Allocated memory was 123.7 MB in the beginning and 155.2 MB in the end (delta: 31.5 MB). Free memory was 89.8 MB in the beginning and 61.9 MB in the end (delta: 27.9 MB). Peak memory consumption was 57.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:32,410 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory is still 40.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:01:32,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 589.32 ms. Allocated memory is still 123.7 MB. Free memory was 89.8 MB in the beginning and 93.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:32,411 INFO L168 Benchmark]: Boogie Preprocessor took 68.87 ms. Allocated memory is still 123.7 MB. Free memory was 93.0 MB in the beginning and 90.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:32,412 INFO L168 Benchmark]: RCFGBuilder took 957.65 ms. Allocated memory is still 123.7 MB. Free memory was 90.2 MB in the beginning and 66.2 MB in the end (delta: 24.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:32,413 INFO L168 Benchmark]: TraceAbstraction took 5515.05 ms. Allocated memory was 123.7 MB in the beginning and 155.2 MB in the end (delta: 31.5 MB). Free memory was 65.7 MB in the beginning and 61.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:32,413 INFO L168 Benchmark]: Witness Printer took 4.14 ms. Allocated memory is still 155.2 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:01:32,416 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory is still 40.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 589.32 ms. Allocated memory is still 123.7 MB. Free memory was 89.8 MB in the beginning and 93.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.87 ms. Allocated memory is still 123.7 MB. Free memory was 93.0 MB in the beginning and 90.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 957.65 ms. Allocated memory is still 123.7 MB. Free memory was 90.2 MB in the beginning and 66.2 MB in the end (delta: 24.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5515.05 ms. Allocated memory was 123.7 MB in the beginning and 155.2 MB in the end (delta: 31.5 MB). Free memory was 65.7 MB in the beginning and 61.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.14 ms. Allocated memory is still 155.2 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [\old(garbage)=49, \old(garbage)=60, \old(pc1)=55, \old(pc4)=52, \old(res4)=68, \old(S)=64, \old(S)=61, \old(t1)=71, \old(t1)=58, \old(t4)=65, \old(t4)=59, \old(x1)=67, \old(x1)=69, \old(x4)=57, \old(x4)=54, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, __VERIFIER_nondet_int()=1, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, S || 1 != pc4 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L596] RET push() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] S || 1 != pc4 || __VERIFIER_nondet_int() [L594] S || 1 != pc4 || __VERIFIER_nondet_int() VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, __VERIFIER_nondet_int()=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, S || 1 != pc4 || __VERIFIER_nondet_int()=0, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-1:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [\old(garbage)=0, \old(garbage)=0, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=0, \old(S)=0, \old(t1)=0, \old(t1)=0, \old(t4)=0, \old(t4)=0, \old(x1)=0, \old(x1)=0, \old(x4)=0, \old(x4)=0, \result=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 92 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 5.3s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 813 SDtfs, 508 SDslu, 788 SDs, 0 SdLazy, 1208 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=376occurred in iteration=9, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 215 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 863 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:01:32,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:01:35,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:01:35,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:01:35,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:01:35,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:01:35,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:01:35,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:01:35,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:01:35,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:01:35,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:01:35,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:01:35,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:01:35,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:01:35,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:01:35,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:01:35,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:01:35,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:01:35,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:01:35,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:01:35,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:01:35,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:01:35,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:01:35,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:01:35,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:01:35,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:01:35,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:01:35,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:01:35,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:01:35,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:01:35,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:01:35,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:01:35,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:01:35,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:01:35,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:01:35,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:01:35,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:01:35,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:01:35,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:01:35,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:01:35,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:01:35,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:01:35,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 23:01:35,580 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:01:35,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:01:35,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:01:35,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:01:35,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:01:35,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:01:35,584 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:01:35,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:01:35,585 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:01:35,585 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:01:35,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:01:35,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:01:35,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:01:35,587 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:01:35,587 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:01:35,587 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:01:35,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:01:35,587 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:01:35,588 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:01:35,588 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:01:35,588 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:01:35,588 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:01:35,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:01:35,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:01:35,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:01:35,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:01:35,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:01:35,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:01:35,590 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:01:35,590 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:01:35,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:01:35,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:01:35,591 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2021-10-28 23:01:35,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:01:36,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:01:36,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:01:36,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:01:36,015 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:01:36,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-10-28 23:01:36,100 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/data/36bd08483/d9ec1a3c172747bbb019ec3bd800940f/FLAGece5babf7 [2021-10-28 23:01:36,836 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:01:36,836 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-10-28 23:01:36,849 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/data/36bd08483/d9ec1a3c172747bbb019ec3bd800940f/FLAGece5babf7 [2021-10-28 23:01:37,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/data/36bd08483/d9ec1a3c172747bbb019ec3bd800940f [2021-10-28 23:01:37,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:01:37,078 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:01:37,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:01:37,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:01:37,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:01:37,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:01:37" (1/1) ... [2021-10-28 23:01:37,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5761b7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:37, skipping insertion in model container [2021-10-28 23:01:37,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:01:37" (1/1) ... [2021-10-28 23:01:37,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:01:37,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:01:37,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:01:37,506 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:01:37,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:01:37,598 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:01:37,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:37 WrapperNode [2021-10-28 23:01:37,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:01:37,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:01:37,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:01:37,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:01:37,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:37" (1/1) ... [2021-10-28 23:01:37,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:37" (1/1) ... [2021-10-28 23:01:37,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:37" (1/1) ... [2021-10-28 23:01:37,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:37" (1/1) ... [2021-10-28 23:01:37,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:37" (1/1) ... [2021-10-28 23:01:37,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:37" (1/1) ... [2021-10-28 23:01:37,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:37" (1/1) ... [2021-10-28 23:01:37,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:01:37,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:01:37,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:01:37,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:01:37,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:37" (1/1) ... [2021-10-28 23:01:37,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:01:37,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:01:37,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:01:37,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:01:37,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:01:37,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:01:37,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:01:37,825 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:01:37,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:01:37,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:01:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:01:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:01:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:01:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure push [2021-10-28 23:01:37,829 INFO L138 BoogieDeclarations]: Found implementation of procedure pop [2021-10-28 23:01:37,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:01:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:01:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:01:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:01:37,830 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:01:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:01:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:01:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:01:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:01:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:01:37,831 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:01:37,832 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:01:37,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:01:37,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:01:37,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:01:37,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:01:37,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:01:37,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:01:37,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:01:37,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:01:37,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:01:37,833 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:01:37,834 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:01:37,834 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:01:37,834 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:01:37,834 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:01:37,834 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:01:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:01:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:01:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:01:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:01:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:01:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:01:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:01:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:01:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:01:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:01:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:01:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:01:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:01:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:01:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:01:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:01:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:01:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:01:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:01:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:01:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:01:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:01:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:01:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:01:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:01:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:01:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:01:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:01:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:01:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:01:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:01:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:01:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:01:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:01:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:01:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:01:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:01:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:01:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:01:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:01:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:01:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:01:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:01:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:01:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:01:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:01:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:01:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:01:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:01:37,864 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:01:37,864 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:01:37,864 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:01:37,864 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:01:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:01:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:01:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:01:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:01:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:01:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:01:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:01:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:01:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:01:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:01:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:01:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:01:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:01:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:01:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:01:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:01:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:01:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:01:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:01:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:01:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:01:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:01:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:01:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:01:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:01:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:01:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:01:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:01:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:01:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:01:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:01:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:01:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:01:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:01:37,875 INFO L130 BoogieDeclarations]: Found specification of procedure push [2021-10-28 23:01:37,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:01:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:01:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:01:37,880 INFO L130 BoogieDeclarations]: Found specification of procedure pop [2021-10-28 23:01:37,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:01:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:01:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:01:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:01:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:01:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:01:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:01:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:01:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 23:01:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 23:01:38,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:01:38,868 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-28 23:01:38,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:38 BoogieIcfgContainer [2021-10-28 23:01:38,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:01:38,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:01:38,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:01:38,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:01:38,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:01:37" (1/3) ... [2021-10-28 23:01:38,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff76d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:01:38, skipping insertion in model container [2021-10-28 23:01:38,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:37" (2/3) ... [2021-10-28 23:01:38,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff76d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:01:38, skipping insertion in model container [2021-10-28 23:01:38,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:38" (3/3) ... [2021-10-28 23:01:38,882 INFO L111 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2021-10-28 23:01:38,890 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:01:38,890 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-28 23:01:38,962 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:01:38,971 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:01:38,971 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-28 23:01:38,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 65 states have internal predecessors, (82), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:01:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:01:39,002 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:39,003 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:39,004 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:39,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:39,012 INFO L85 PathProgramCache]: Analyzing trace with hash 913050877, now seen corresponding path program 1 times [2021-10-28 23:01:39,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:39,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131029182] [2021-10-28 23:01:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:39,031 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:39,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:39,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:39,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:01:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:39,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:01:39,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:39,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:39,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:39,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131029182] [2021-10-28 23:01:39,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131029182] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:39,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:39,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:01:39,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312333599] [2021-10-28 23:01:39,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:01:39,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:39,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:01:39,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:01:39,555 INFO L87 Difference]: Start difference. First operand has 72 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 65 states have internal predecessors, (82), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:39,579 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2021-10-28 23:01:39,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:01:39,581 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-10-28 23:01:39,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:39,595 INFO L225 Difference]: With dead ends: 72 [2021-10-28 23:01:39,595 INFO L226 Difference]: Without dead ends: 69 [2021-10-28 23:01:39,597 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:01:39,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-28 23:01:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-10-28 23:01:39,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 63 states have internal predecessors, (78), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:01:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2021-10-28 23:01:39,677 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 8 [2021-10-28 23:01:39,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:39,678 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2021-10-28 23:01:39,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:39,678 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2021-10-28 23:01:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:01:39,679 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:39,680 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:39,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-28 23:01:39,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:39,897 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:39,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:39,898 INFO L85 PathProgramCache]: Analyzing trace with hash 913039345, now seen corresponding path program 1 times [2021-10-28 23:01:39,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:39,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965006244] [2021-10-28 23:01:39,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:39,900 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:39,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:39,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:39,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:01:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:40,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:01:40,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:40,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:40,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:40,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965006244] [2021-10-28 23:01:40,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965006244] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:40,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:40,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 23:01:40,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234868039] [2021-10-28 23:01:40,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:01:40,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:40,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:01:40,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:01:40,529 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:40,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:40,639 INFO L93 Difference]: Finished difference Result 120 states and 153 transitions. [2021-10-28 23:01:40,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:01:40,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-10-28 23:01:40,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:40,647 INFO L225 Difference]: With dead ends: 120 [2021-10-28 23:01:40,648 INFO L226 Difference]: Without dead ends: 120 [2021-10-28 23:01:40,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:01:40,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-28 23:01:40,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 102. [2021-10-28 23:01:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.8732394366197183) internal successors, (133), 93 states have internal predecessors, (133), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 23:01:40,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 145 transitions. [2021-10-28 23:01:40,700 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 145 transitions. Word has length 8 [2021-10-28 23:01:40,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:40,701 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 145 transitions. [2021-10-28 23:01:40,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 145 transitions. [2021-10-28 23:01:40,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:01:40,707 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:40,708 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:40,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:40,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:40,923 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:40,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:40,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1760552785, now seen corresponding path program 1 times [2021-10-28 23:01:40,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:40,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260069542] [2021-10-28 23:01:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:40,925 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:40,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:40,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:40,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:01:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:41,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:01:41,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:41,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:41,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:41,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260069542] [2021-10-28 23:01:41,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260069542] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:41,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:41,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:01:41,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204591358] [2021-10-28 23:01:41,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:01:41,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:41,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:01:41,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:01:41,216 INFO L87 Difference]: Start difference. First operand 102 states and 145 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:41,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:41,379 INFO L93 Difference]: Finished difference Result 128 states and 182 transitions. [2021-10-28 23:01:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:01:41,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 23:01:41,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:41,384 INFO L225 Difference]: With dead ends: 128 [2021-10-28 23:01:41,384 INFO L226 Difference]: Without dead ends: 125 [2021-10-28 23:01:41,385 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:01:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-28 23:01:41,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2021-10-28 23:01:41,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 78 states have (on average 1.8333333333333333) internal successors, (143), 104 states have internal predecessors, (143), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (15), 5 states have call predecessors, (15), 9 states have call successors, (15) [2021-10-28 23:01:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2021-10-28 23:01:41,405 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 9 [2021-10-28 23:01:41,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:41,410 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2021-10-28 23:01:41,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:41,410 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2021-10-28 23:01:41,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:01:41,411 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:41,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:41,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:41,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:41,628 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting pushErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:41,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:41,629 INFO L85 PathProgramCache]: Analyzing trace with hash 370381771, now seen corresponding path program 1 times [2021-10-28 23:01:41,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:41,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666520442] [2021-10-28 23:01:41,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:41,631 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:41,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:41,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:41,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:01:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:41,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:01:41,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:41,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:01:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:41,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:42,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:42,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666520442] [2021-10-28 23:01:42,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666520442] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:42,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:42,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:01:42,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110370326] [2021-10-28 23:01:42,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:01:42,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:42,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:01:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:01:42,004 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:42,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:42,221 INFO L93 Difference]: Finished difference Result 198 states and 290 transitions. [2021-10-28 23:01:42,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:01:42,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 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 11 [2021-10-28 23:01:42,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:42,230 INFO L225 Difference]: With dead ends: 198 [2021-10-28 23:01:42,230 INFO L226 Difference]: Without dead ends: 198 [2021-10-28 23:01:42,231 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:01:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-28 23:01:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 177. [2021-10-28 23:01:42,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 134 states have (on average 1.7761194029850746) internal successors, (238), 160 states have internal predecessors, (238), 14 states have call successors, (14), 10 states have call predecessors, (14), 11 states have return successors, (24), 7 states have call predecessors, (24), 13 states have call successors, (24) [2021-10-28 23:01:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 276 transitions. [2021-10-28 23:01:42,291 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 276 transitions. Word has length 11 [2021-10-28 23:01:42,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:42,292 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 276 transitions. [2021-10-28 23:01:42,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:42,293 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 276 transitions. [2021-10-28 23:01:42,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:01:42,294 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:42,294 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:42,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:42,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:42,495 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting pushErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:42,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:42,496 INFO L85 PathProgramCache]: Analyzing trace with hash 370381772, now seen corresponding path program 1 times [2021-10-28 23:01:42,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:42,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347171549] [2021-10-28 23:01:42,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:42,497 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:42,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:42,498 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:42,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:01:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:42,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:01:42,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:42,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:01:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:42,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:42,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:42,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347171549] [2021-10-28 23:01:42,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347171549] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:42,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:42,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 23:01:42,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348295086] [2021-10-28 23:01:42,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:42,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:42,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:42,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:42,925 INFO L87 Difference]: Start difference. First operand 177 states and 276 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:43,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:43,324 INFO L93 Difference]: Finished difference Result 333 states and 499 transitions. [2021-10-28 23:01:43,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:43,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 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 11 [2021-10-28 23:01:43,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:43,331 INFO L225 Difference]: With dead ends: 333 [2021-10-28 23:01:43,331 INFO L226 Difference]: Without dead ends: 333 [2021-10-28 23:01:43,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:43,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-10-28 23:01:43,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 295. [2021-10-28 23:01:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 242 states have (on average 1.7314049586776858) internal successors, (419), 268 states have internal predecessors, (419), 18 states have call successors, (18), 18 states have call predecessors, (18), 19 states have return successors, (35), 9 states have call predecessors, (35), 17 states have call successors, (35) [2021-10-28 23:01:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 472 transitions. [2021-10-28 23:01:43,382 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 472 transitions. Word has length 11 [2021-10-28 23:01:43,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:43,383 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 472 transitions. [2021-10-28 23:01:43,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 472 transitions. [2021-10-28 23:01:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:01:43,384 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:43,385 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:43,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-28 23:01:43,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:43,594 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting pushErr4REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:43,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:43,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1403059964, now seen corresponding path program 1 times [2021-10-28 23:01:43,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:43,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988121729] [2021-10-28 23:01:43,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:43,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:43,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:43,597 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:43,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:01:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:43,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:01:43,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:43,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:43,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:43,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988121729] [2021-10-28 23:01:43,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988121729] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:43,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:43,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 23:01:43,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6393449] [2021-10-28 23:01:43,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:43,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:43,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:43,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:43,949 INFO L87 Difference]: Start difference. First operand 295 states and 472 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:43,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:43,997 INFO L93 Difference]: Finished difference Result 212 states and 298 transitions. [2021-10-28 23:01:43,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:01:43,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 23:01:43,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:44,001 INFO L225 Difference]: With dead ends: 212 [2021-10-28 23:01:44,001 INFO L226 Difference]: Without dead ends: 212 [2021-10-28 23:01:44,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:44,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-28 23:01:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 181. [2021-10-28 23:01:44,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 144 states have (on average 1.6736111111111112) internal successors, (241), 162 states have internal predecessors, (241), 12 states have call successors, (12), 12 states have call predecessors, (12), 13 states have return successors, (18), 7 states have call predecessors, (18), 11 states have call successors, (18) [2021-10-28 23:01:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 271 transitions. [2021-10-28 23:01:44,018 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 271 transitions. Word has length 12 [2021-10-28 23:01:44,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:44,018 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 271 transitions. [2021-10-28 23:01:44,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:44,019 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 271 transitions. [2021-10-28 23:01:44,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:01:44,020 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:44,020 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:44,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:44,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:44,229 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting popErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:44,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:44,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2074754906, now seen corresponding path program 1 times [2021-10-28 23:01:44,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:44,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832619907] [2021-10-28 23:01:44,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:44,231 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:44,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:44,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:44,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 23:01:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:44,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:01:44,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:44,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:44,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:44,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832619907] [2021-10-28 23:01:44,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832619907] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:44,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:44,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 23:01:44,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105535275] [2021-10-28 23:01:44,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:44,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:44,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:44,632 INFO L87 Difference]: Start difference. First operand 181 states and 271 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:44,694 INFO L93 Difference]: Finished difference Result 281 states and 404 transitions. [2021-10-28 23:01:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:01:44,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 23:01:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:44,702 INFO L225 Difference]: With dead ends: 281 [2021-10-28 23:01:44,703 INFO L226 Difference]: Without dead ends: 281 [2021-10-28 23:01:44,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-10-28 23:01:44,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-10-28 23:01:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 216 states have (on average 1.5648148148148149) internal successors, (338), 246 states have internal predecessors, (338), 22 states have call successors, (22), 22 states have call predecessors, (22), 31 states have return successors, (44), 13 states have call predecessors, (44), 21 states have call successors, (44) [2021-10-28 23:01:44,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 404 transitions. [2021-10-28 23:01:44,749 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 404 transitions. Word has length 13 [2021-10-28 23:01:44,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:44,749 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 404 transitions. [2021-10-28 23:01:44,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:01:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 404 transitions. [2021-10-28 23:01:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:01:44,753 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:44,753 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:44,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-28 23:01:44,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:44,969 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:01:44,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:44,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1772709125, now seen corresponding path program 1 times [2021-10-28 23:01:44,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:44,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555590654] [2021-10-28 23:01:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:44,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:44,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:44,973 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:45,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 23:01:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:01:45,276 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:01:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:01:45,452 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 23:01:45,453 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:01:45,454 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr5ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:01:45,456 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr0REQUIRES_VIOLATION [2021-10-28 23:01:45,457 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr1REQUIRES_VIOLATION [2021-10-28 23:01:45,457 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr2REQUIRES_VIOLATION [2021-10-28 23:01:45,457 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr3REQUIRES_VIOLATION [2021-10-28 23:01:45,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr4REQUIRES_VIOLATION [2021-10-28 23:01:45,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr5REQUIRES_VIOLATION [2021-10-28 23:01:45,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr6REQUIRES_VIOLATION [2021-10-28 23:01:45,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr7REQUIRES_VIOLATION [2021-10-28 23:01:45,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr0REQUIRES_VIOLATION [2021-10-28 23:01:45,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr1REQUIRES_VIOLATION [2021-10-28 23:01:45,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr2REQUIRES_VIOLATION [2021-10-28 23:01:45,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr3REQUIRES_VIOLATION [2021-10-28 23:01:45,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr4REQUIRES_VIOLATION [2021-10-28 23:01:45,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr5REQUIRES_VIOLATION [2021-10-28 23:01:45,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:01:45,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:01:45,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:01:45,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:01:45,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:01:45,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:45,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:45,685 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:45,689 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:01:45,727 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 23:01:45,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:01:45 BoogieIcfgContainer [2021-10-28 23:01:45,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:01:45,795 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:01:45,809 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:01:45,809 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:01:45,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:38" (3/4) ... [2021-10-28 23:01:45,814 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:01:45,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:01:45,816 INFO L168 Benchmark]: Toolchain (without parser) took 8736.79 ms. Allocated memory was 58.7 MB in the beginning and 98.6 MB in the end (delta: 39.8 MB). Free memory was 35.5 MB in the beginning and 55.8 MB in the end (delta: -20.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:45,817 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 39.9 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:01:45,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 516.69 ms. Allocated memory is still 58.7 MB. Free memory was 35.3 MB in the beginning and 34.5 MB in the end (delta: 863.3 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:45,819 INFO L168 Benchmark]: Boogie Preprocessor took 89.14 ms. Allocated memory is still 58.7 MB. Free memory was 34.5 MB in the beginning and 31.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:45,820 INFO L168 Benchmark]: RCFGBuilder took 1180.60 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 31.3 MB in the beginning and 43.3 MB in the end (delta: -11.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:45,821 INFO L168 Benchmark]: TraceAbstraction took 6921.13 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 42.9 MB in the beginning and 56.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:45,821 INFO L168 Benchmark]: Witness Printer took 19.10 ms. Allocated memory is still 98.6 MB. Free memory was 56.4 MB in the beginning and 55.8 MB in the end (delta: 564.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:01:45,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 39.9 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 516.69 ms. Allocated memory is still 58.7 MB. Free memory was 35.3 MB in the beginning and 34.5 MB in the end (delta: 863.3 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.14 ms. Allocated memory is still 58.7 MB. Free memory was 34.5 MB in the beginning and 31.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1180.60 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 31.3 MB in the beginning and 43.3 MB in the end (delta: -11.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6921.13 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 42.9 MB in the beginning and 56.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Witness Printer took 19.10 ms. Allocated memory is still 98.6 MB. Free memory was 56.4 MB in the beginning and 55.8 MB in the end (delta: 564.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=16, \old(pc4)=26, \old(res4)=20, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc4 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={1:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={1:0}, x4={0:0}] [L596] RET push() VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={1:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc4 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={1:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [\old(garbage)=null, \old(garbage)=null, \old(pc1)=1, \old(pc4)=1, \old(res4)=0, \old(S)=null, \old(S)=null, \old(t1)=null, \old(t1)=null, \old(t4)=null, \old(t4)=null, \old(x1)=null, \old(x1)=null, \old(x4)=null, \old(x4)=null, \result=0, garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 96 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 6.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 668 SDtfs, 519 SDslu, 494 SDs, 0 SdLazy, 164 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=295occurred in iteration=5, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 118 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 296 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1050 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:01:45,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59159ba-23e7-4204-9481-1dfe11321fb8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...