./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-e943c26 [2021-10-21 19:22:04,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:22:04,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:22:04,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:22:04,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:22:04,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:22:04,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:22:04,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:22:04,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:22:04,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:22:04,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:22:04,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:22:04,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:22:04,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:22:04,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:22:04,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:22:04,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:22:04,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:22:04,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:22:04,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:22:04,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:22:04,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:22:04,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:22:04,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:22:04,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:22:04,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:22:04,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:22:04,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:22:04,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:22:04,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:22:04,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:22:04,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:22:04,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:22:04,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:22:04,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:22:04,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:22:04,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:22:04,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:22:04,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:22:04,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:22:04,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:22:04,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 19:22:04,855 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:22:04,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:22:04,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:22:04,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:22:04,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:22:04,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:22:04,865 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:22:04,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:22:04,865 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:22:04,865 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:22:04,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:22:04,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:22:04,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:22:04,868 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:22:04,868 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:22:04,868 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:22:04,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:22:04,868 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:22:04,869 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:22:04,869 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:22:04,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:22:04,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:22:04,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:22:04,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:22:04,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:22:04,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:22:04,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:22:04,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:22:04,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:22:04,872 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_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2021-10-21 19:22:05,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:22:05,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:22:05,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:22:05,215 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:22:05,216 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:22:05,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-10-21 19:22:05,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/data/1f62efdcf/74a52b8471a3499cb5c34787e73cf590/FLAG51f1498d6 [2021-10-21 19:22:05,881 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:22:05,882 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-10-21 19:22:05,902 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/data/1f62efdcf/74a52b8471a3499cb5c34787e73cf590/FLAG51f1498d6 [2021-10-21 19:22:06,209 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/data/1f62efdcf/74a52b8471a3499cb5c34787e73cf590 [2021-10-21 19:22:06,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:22:06,213 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:22:06,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:22:06,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:22:06,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:22:06,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:22:06" (1/1) ... [2021-10-21 19:22:06,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47bd66fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:06, skipping insertion in model container [2021-10-21 19:22:06,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:22:06" (1/1) ... [2021-10-21 19:22:06,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:22:06,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:22:06,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:22:06,574 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:22:06,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:22:06,657 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:22:06,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:06 WrapperNode [2021-10-21 19:22:06,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:22:06,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:22:06,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:22:06,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:22:06,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:06" (1/1) ... [2021-10-21 19:22:06,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:06" (1/1) ... [2021-10-21 19:22:06,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:06" (1/1) ... [2021-10-21 19:22:06,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:06" (1/1) ... [2021-10-21 19:22:06,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:06" (1/1) ... [2021-10-21 19:22:06,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:06" (1/1) ... [2021-10-21 19:22:06,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:06" (1/1) ... [2021-10-21 19:22:06,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:22:06,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:22:06,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:22:06,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:22:06,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:06" (1/1) ... [2021-10-21 19:22:06,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:22:06,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:22:06,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:22:06,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:22:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:22:06,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:22:06,871 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 19:22:06,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:22:06,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:22:06,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 19:22:06,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 19:22:06,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 19:22:06,874 INFO L138 BoogieDeclarations]: Found implementation of procedure push [2021-10-21 19:22:06,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pop [2021-10-21 19:22:06,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:22:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:22:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 19:22:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 19:22:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 19:22:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 19:22:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:22:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:22:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:22:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:22:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:22:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:22:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:22:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:22:06,878 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:22:06,878 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:22:06,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:22:06,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:22:06,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:22:06,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:22:06,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:22:06,883 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:22:06,884 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:22:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:22:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:22:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 19:22:06,885 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 19:22:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 19:22:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:22:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:22:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:22:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:22:06,886 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:22:06,887 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:22:06,887 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:22:06,887 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:22:06,887 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:22:06,887 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:22:06,888 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:22:06,888 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:22:06,888 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:22:06,889 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:22:06,890 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:22:06,890 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:22:06,890 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:22:06,890 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:22:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:22:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:22:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:22:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:22:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:22:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:22:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:22:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:22:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:22:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:22:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:22:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:22:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:22:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:22:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:22:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:22:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:22:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:22:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:22:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:22:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:22:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:22:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:22:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:22:06,896 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:22:06,896 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:22:06,896 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:22:06,896 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:22:06,896 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:22:06,897 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:22:06,897 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:22:06,897 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:22:06,897 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:22:06,897 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:22:06,897 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:22:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:22:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:22:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:22:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:22:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:22:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:22:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:22:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:22:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:22:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:22:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:22:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:22:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:22:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:22:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:22:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:22:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:22:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:22:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:22:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:22:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:22:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:22:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:22:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:22:06,902 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:22:06,902 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:22:06,902 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:22:06,902 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:22:06,902 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:22:06,902 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:22:06,903 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:22:06,903 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:22:06,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 19:22:06,903 INFO L130 BoogieDeclarations]: Found specification of procedure push [2021-10-21 19:22:06,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:22:06,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:22:06,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:22:06,904 INFO L130 BoogieDeclarations]: Found specification of procedure pop [2021-10-21 19:22:06,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:22:06,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:22:06,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:22:06,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:22:06,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:22:06,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:22:06,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:22:07,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:22:07,619 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-21 19:22:07,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:22:07 BoogieIcfgContainer [2021-10-21 19:22:07,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:22:07,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:22:07,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:22:07,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:22:07,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:22:06" (1/3) ... [2021-10-21 19:22:07,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc4b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:22:07, skipping insertion in model container [2021-10-21 19:22:07,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:06" (2/3) ... [2021-10-21 19:22:07,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc4b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:22:07, skipping insertion in model container [2021-10-21 19:22:07,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:22:07" (3/3) ... [2021-10-21 19:22:07,632 INFO L111 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2021-10-21 19:22:07,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:22:07,638 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-21 19:22:07,686 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:22:07,693 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:22:07,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-21 19:22:07,710 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) [2021-10-21 19:22:07,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:22:07,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:07,719 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:07,719 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:07,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:07,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1846299228, now seen corresponding path program 1 times [2021-10-21 19:22:07,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:07,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580331060] [2021-10-21 19:22:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:07,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:08,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:22:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:08,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:08,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:08,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580331060] [2021-10-21 19:22:08,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580331060] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:08,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:08,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:22:08,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239914138] [2021-10-21 19:22:08,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:22:08,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:08,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:22:08,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:22:08,109 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) [2021-10-21 19:22:08,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:08,375 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2021-10-21 19:22:08,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:22:08,377 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 [2021-10-21 19:22:08,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:08,389 INFO L225 Difference]: With dead ends: 92 [2021-10-21 19:22:08,389 INFO L226 Difference]: Without dead ends: 89 [2021-10-21 19:22:08,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:22:08,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-21 19:22:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 71. [2021-10-21 19:22:08,432 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) [2021-10-21 19:22:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2021-10-21 19:22:08,436 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 8 [2021-10-21 19:22:08,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:08,436 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2021-10-21 19:22:08,437 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) [2021-10-21 19:22:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2021-10-21 19:22:08,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:22:08,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:08,438 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:08,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:22:08,439 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:08,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:08,440 INFO L82 PathProgramCache]: Analyzing trace with hash 451849005, now seen corresponding path program 1 times [2021-10-21 19:22:08,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:08,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139135618] [2021-10-21 19:22:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:08,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:08,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:22:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:08,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:08,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139135618] [2021-10-21 19:22:08,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139135618] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:08,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:08,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:22:08,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818596587] [2021-10-21 19:22:08,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:22:08,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:08,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:22:08,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:22:08,573 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) [2021-10-21 19:22:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:08,993 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2021-10-21 19:22:08,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:22:08,994 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 [2021-10-21 19:22:08,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:09,000 INFO L225 Difference]: With dead ends: 91 [2021-10-21 19:22:09,000 INFO L226 Difference]: Without dead ends: 91 [2021-10-21 19:22:09,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:09,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-21 19:22:09,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2021-10-21 19:22:09,017 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) [2021-10-21 19:22:09,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2021-10-21 19:22:09,025 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 10 [2021-10-21 19:22:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:09,026 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2021-10-21 19:22:09,026 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) [2021-10-21 19:22:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2021-10-21 19:22:09,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:22:09,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:09,028 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:09,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:22:09,029 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:09,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:09,029 INFO L82 PathProgramCache]: Analyzing trace with hash 451908587, now seen corresponding path program 1 times [2021-10-21 19:22:09,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:09,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531175966] [2021-10-21 19:22:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:09,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:22:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:09,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:09,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531175966] [2021-10-21 19:22:09,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531175966] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:09,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:09,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:22:09,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459311003] [2021-10-21 19:22:09,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:22:09,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:09,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:22:09,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:22:09,289 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) [2021-10-21 19:22:09,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:09,666 INFO L93 Difference]: Finished difference Result 135 states and 176 transitions. [2021-10-21 19:22:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:22:09,667 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 [2021-10-21 19:22:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:09,673 INFO L225 Difference]: With dead ends: 135 [2021-10-21 19:22:09,673 INFO L226 Difference]: Without dead ends: 135 [2021-10-21 19:22:09,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 161.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:09,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-21 19:22:09,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 108. [2021-10-21 19:22:09,690 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) [2021-10-21 19:22:09,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2021-10-21 19:22:09,691 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 10 [2021-10-21 19:22:09,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:09,692 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2021-10-21 19:22:09,692 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) [2021-10-21 19:22:09,692 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2021-10-21 19:22:09,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:22:09,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:09,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:09,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:22:09,694 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:09,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:09,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1124262917, now seen corresponding path program 1 times [2021-10-21 19:22:09,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:09,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999581857] [2021-10-21 19:22:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:09,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:09,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:22:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:09,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:09,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999581857] [2021-10-21 19:22:09,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999581857] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:09,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:09,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:22:09,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765340704] [2021-10-21 19:22:09,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:22:09,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:09,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:22:09,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:22:09,850 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) [2021-10-21 19:22:10,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:10,085 INFO L93 Difference]: Finished difference Result 149 states and 214 transitions. [2021-10-21 19:22:10,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:22:10,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-21 19:22:10,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:10,088 INFO L225 Difference]: With dead ends: 149 [2021-10-21 19:22:10,088 INFO L226 Difference]: Without dead ends: 144 [2021-10-21 19:22:10,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:22:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-21 19:22:10,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 126. [2021-10-21 19:22:10,101 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) [2021-10-21 19:22:10,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 183 transitions. [2021-10-21 19:22:10,106 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 183 transitions. Word has length 11 [2021-10-21 19:22:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:10,107 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 183 transitions. [2021-10-21 19:22:10,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:22:10,110 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 183 transitions. [2021-10-21 19:22:10,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:22:10,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:10,111 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:10,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:22:10,111 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting pushErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:10,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:10,113 INFO L82 PathProgramCache]: Analyzing trace with hash 649350680, now seen corresponding path program 1 times [2021-10-21 19:22:10,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:10,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099691384] [2021-10-21 19:22:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:10,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:22:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:10,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:10,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099691384] [2021-10-21 19:22:10,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099691384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:10,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:10,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:22:10,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460353215] [2021-10-21 19:22:10,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:22:10,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:10,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:22:10,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:10,269 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) [2021-10-21 19:22:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:10,640 INFO L93 Difference]: Finished difference Result 174 states and 254 transitions. [2021-10-21 19:22:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:22:10,641 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 [2021-10-21 19:22:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:10,643 INFO L225 Difference]: With dead ends: 174 [2021-10-21 19:22:10,644 INFO L226 Difference]: Without dead ends: 174 [2021-10-21 19:22:10,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 202.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:22:10,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-21 19:22:10,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 153. [2021-10-21 19:22:10,655 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) [2021-10-21 19:22:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 232 transitions. [2021-10-21 19:22:10,658 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 232 transitions. Word has length 13 [2021-10-21 19:22:10,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:10,658 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 232 transitions. [2021-10-21 19:22:10,658 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) [2021-10-21 19:22:10,659 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 232 transitions. [2021-10-21 19:22:10,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:22:10,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:10,659 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:10,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:22:10,660 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting pushErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:10,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:10,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1870609254, now seen corresponding path program 1 times [2021-10-21 19:22:10,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:10,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704157835] [2021-10-21 19:22:10,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:10,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:22:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:10,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:10,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704157835] [2021-10-21 19:22:10,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704157835] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:10,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:10,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:22:10,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860509988] [2021-10-21 19:22:10,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:22:10,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:10,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:22:10,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:22:10,748 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) [2021-10-21 19:22:11,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:11,111 INFO L93 Difference]: Finished difference Result 265 states and 403 transitions. [2021-10-21 19:22:11,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:22:11,112 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 [2021-10-21 19:22:11,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:11,114 INFO L225 Difference]: With dead ends: 265 [2021-10-21 19:22:11,115 INFO L226 Difference]: Without dead ends: 265 [2021-10-21 19:22:11,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:11,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-21 19:22:11,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 238. [2021-10-21 19:22:11,130 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) [2021-10-21 19:22:11,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 376 transitions. [2021-10-21 19:22:11,133 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 376 transitions. Word has length 13 [2021-10-21 19:22:11,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:11,133 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 376 transitions. [2021-10-21 19:22:11,133 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) [2021-10-21 19:22:11,134 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 376 transitions. [2021-10-21 19:22:11,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:22:11,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:11,134 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:11,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:22:11,135 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting pushErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:11,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:11,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1870609253, now seen corresponding path program 1 times [2021-10-21 19:22:11,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:11,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826881220] [2021-10-21 19:22:11,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:11,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:22:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:11,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:11,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826881220] [2021-10-21 19:22:11,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826881220] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:11,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:11,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:22:11,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882133066] [2021-10-21 19:22:11,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:22:11,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:11,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:22:11,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:22:11,236 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) [2021-10-21 19:22:11,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:11,577 INFO L93 Difference]: Finished difference Result 329 states and 503 transitions. [2021-10-21 19:22:11,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:22:11,578 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 [2021-10-21 19:22:11,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:11,581 INFO L225 Difference]: With dead ends: 329 [2021-10-21 19:22:11,582 INFO L226 Difference]: Without dead ends: 329 [2021-10-21 19:22:11,582 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 88.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:11,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-10-21 19:22:11,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 305. [2021-10-21 19:22:11,596 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) [2021-10-21 19:22:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 477 transitions. [2021-10-21 19:22:11,599 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 477 transitions. Word has length 13 [2021-10-21 19:22:11,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:11,600 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 477 transitions. [2021-10-21 19:22:11,600 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) [2021-10-21 19:22:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 477 transitions. [2021-10-21 19:22:11,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:22:11,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:11,601 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:11,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:22:11,602 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting pushErr4REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:11,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:11,602 INFO L82 PathProgramCache]: Analyzing trace with hash 2140662271, now seen corresponding path program 1 times [2021-10-21 19:22:11,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:11,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505979557] [2021-10-21 19:22:11,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:11,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:11,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:22:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:11,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:11,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505979557] [2021-10-21 19:22:11,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505979557] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:11,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:11,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:22:11,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185077948] [2021-10-21 19:22:11,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:22:11,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:11,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:22:11,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:11,709 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) [2021-10-21 19:22:11,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:11,928 INFO L93 Difference]: Finished difference Result 270 states and 379 transitions. [2021-10-21 19:22:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:22:11,929 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 [2021-10-21 19:22:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:11,931 INFO L225 Difference]: With dead ends: 270 [2021-10-21 19:22:11,932 INFO L226 Difference]: Without dead ends: 270 [2021-10-21 19:22:11,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:22:11,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-21 19:22:11,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 235. [2021-10-21 19:22:11,942 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) [2021-10-21 19:22:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 345 transitions. [2021-10-21 19:22:11,944 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 345 transitions. Word has length 14 [2021-10-21 19:22:11,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:11,944 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 345 transitions. [2021-10-21 19:22:11,945 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) [2021-10-21 19:22:11,945 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 345 transitions. [2021-10-21 19:22:11,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:22:11,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:11,946 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:11,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:22:11,946 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting popErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:11,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:11,947 INFO L82 PathProgramCache]: Analyzing trace with hash 406451957, now seen corresponding path program 1 times [2021-10-21 19:22:11,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:11,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748035606] [2021-10-21 19:22:11,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:11,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:12,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:22:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:12,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:12,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748035606] [2021-10-21 19:22:12,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748035606] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:12,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:12,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:22:12,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665461876] [2021-10-21 19:22:12,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:22:12,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:12,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:22:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:22:12,060 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) [2021-10-21 19:22:12,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:12,313 INFO L93 Difference]: Finished difference Result 402 states and 560 transitions. [2021-10-21 19:22:12,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:22:12,318 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 [2021-10-21 19:22:12,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:12,321 INFO L225 Difference]: With dead ends: 402 [2021-10-21 19:22:12,321 INFO L226 Difference]: Without dead ends: 402 [2021-10-21 19:22:12,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:22:12,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-10-21 19:22:12,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 376. [2021-10-21 19:22:12,337 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) [2021-10-21 19:22:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 531 transitions. [2021-10-21 19:22:12,340 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 531 transitions. Word has length 15 [2021-10-21 19:22:12,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:12,341 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 531 transitions. [2021-10-21 19:22:12,341 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) [2021-10-21 19:22:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 531 transitions. [2021-10-21 19:22:12,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:22:12,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:12,343 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:12,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:22:12,343 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:12,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:12,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1475656894, now seen corresponding path program 1 times [2021-10-21 19:22:12,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:12,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984080944] [2021-10-21 19:22:12,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:12,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:22:12,362 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:22:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:22:12,425 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:22:12,426 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:22:12,427 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr5ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:22:12,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr0REQUIRES_VIOLATION [2021-10-21 19:22:12,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr1REQUIRES_VIOLATION [2021-10-21 19:22:12,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr2REQUIRES_VIOLATION [2021-10-21 19:22:12,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr3REQUIRES_VIOLATION [2021-10-21 19:22:12,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr4REQUIRES_VIOLATION [2021-10-21 19:22:12,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr5REQUIRES_VIOLATION [2021-10-21 19:22:12,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr6REQUIRES_VIOLATION [2021-10-21 19:22:12,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr7REQUIRES_VIOLATION [2021-10-21 19:22:12,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr0REQUIRES_VIOLATION [2021-10-21 19:22:12,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr1REQUIRES_VIOLATION [2021-10-21 19:22:12,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr2REQUIRES_VIOLATION [2021-10-21 19:22:12,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr3REQUIRES_VIOLATION [2021-10-21 19:22:12,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr4REQUIRES_VIOLATION [2021-10-21 19:22:12,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr5REQUIRES_VIOLATION [2021-10-21 19:22:12,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 19:22:12,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 19:22:12,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:22:12,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:22:12,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:22:12,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:22:12,439 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:22:12,462 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-21 19:22:12,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:22:12 BoogieIcfgContainer [2021-10-21 19:22:12,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:22:12,490 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:22:12,491 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:22:12,491 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:22:12,491 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:22:07" (3/4) ... [2021-10-21 19:22:12,495 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:22:12,495 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:22:12,497 INFO L168 Benchmark]: Toolchain (without parser) took 6282.63 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 57.5 MB in the beginning and 43.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:12,497 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory was 65.1 MB in the beginning and 65.1 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:22:12,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.18 ms. Allocated memory is still 94.4 MB. Free memory was 57.3 MB in the beginning and 63.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:12,498 INFO L168 Benchmark]: Boogie Preprocessor took 113.07 ms. Allocated memory is still 94.4 MB. Free memory was 63.0 MB in the beginning and 60.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:12,499 INFO L168 Benchmark]: RCFGBuilder took 848.68 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 60.2 MB in the beginning and 90.7 MB in the end (delta: -30.5 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:12,500 INFO L168 Benchmark]: TraceAbstraction took 4866.12 ms. Allocated memory is still 117.4 MB. Free memory was 89.9 MB in the beginning and 43.4 MB in the end (delta: 46.5 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:12,500 INFO L168 Benchmark]: Witness Printer took 4.58 ms. Allocated memory is still 117.4 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:22:12,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory was 65.1 MB in the beginning and 65.1 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 444.18 ms. Allocated memory is still 94.4 MB. Free memory was 57.3 MB in the beginning and 63.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 113.07 ms. Allocated memory is still 94.4 MB. Free memory was 63.0 MB in the beginning and 60.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 848.68 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 60.2 MB in the beginning and 90.7 MB in the end (delta: -30.5 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4866.12 ms. Allocated memory is still 117.4 MB. Free memory was 89.9 MB in the beginning and 43.4 MB in the end (delta: 46.5 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.58 ms. Allocated memory is still 117.4 MB. Free memory is still 43.4 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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)=60, \old(garbage)=49, \old(pc1)=55, \old(pc4)=52, \old(res4)=68, \old(S)=64, \old(S)=61, \old(t1)=71, \old(t1)=58, \old(t4)=59, \old(t4)=65, \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: 4752.9ms, OverallIterations: 10, TraceHistogramMax: 2, EmptinessCheckTime: 21.0ms, AutomataDifference: 2932.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 813 SDtfs, 508 SDslu, 788 SDs, 0 SdLazy, 1208 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1740.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1038.6ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 168.2ms AutomataMinimizationTime, 9 MinimizatonAttempts, 215 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 52.0ms SsaConstructionTime, 196.3ms SatisfiabilityAnalysisTime, 1045.3ms 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 [2021-10-21 19:22:12,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 19:22:15,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:22:15,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:22:15,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:22:15,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:22:15,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:22:15,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:22:15,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:22:15,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:22:15,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:22:15,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:22:15,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:22:15,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:22:15,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:22:15,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:22:15,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:22:15,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:22:15,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:22:15,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:22:15,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:22:15,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:22:15,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:22:15,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:22:15,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:22:15,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:22:15,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:22:15,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:22:15,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:22:15,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:22:15,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:22:15,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:22:15,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:22:15,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:22:15,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:22:15,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:22:15,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:22:15,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:22:15,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:22:15,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:22:15,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:22:15,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:22:15,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 19:22:15,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:22:15,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:22:15,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:22:15,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:22:15,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:22:15,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:22:15,264 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:22:15,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:22:15,264 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:22:15,265 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:22:15,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:22:15,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:22:15,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:22:15,267 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:22:15,267 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:22:15,267 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:22:15,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:22:15,268 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:22:15,268 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:22:15,268 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:22:15,268 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:22:15,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:22:15,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:22:15,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:22:15,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:22:15,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:22:15,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:22:15,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:22:15,270 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:22:15,270 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:22:15,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:22:15,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:22:15,271 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_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31ec15b2e966aee42d8cde3b6798712776e0e885e8b3f5267212ea76fdd72bb4 [2021-10-21 19:22:15,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:22:15,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:22:15,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:22:15,806 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:22:15,806 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:22:15,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-10-21 19:22:15,883 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/data/3bc1af0b4/56b17ef22f754444bc18f19a7d7d9284/FLAG1ed29bb5b [2021-10-21 19:22:16,448 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:22:16,449 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/sv-benchmarks/c/memsafety/lockfree-3.2.i [2021-10-21 19:22:16,465 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/data/3bc1af0b4/56b17ef22f754444bc18f19a7d7d9284/FLAG1ed29bb5b [2021-10-21 19:22:16,745 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/data/3bc1af0b4/56b17ef22f754444bc18f19a7d7d9284 [2021-10-21 19:22:16,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:22:16,749 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:22:16,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:22:16,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:22:16,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:22:16,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:22:16" (1/1) ... [2021-10-21 19:22:16,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ea2939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:16, skipping insertion in model container [2021-10-21 19:22:16,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:22:16" (1/1) ... [2021-10-21 19:22:16,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:22:16,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:22:17,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:22:17,240 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:22:17,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:22:17,380 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:22:17,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:17 WrapperNode [2021-10-21 19:22:17,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:22:17,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:22:17,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:22:17,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:22:17,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:17" (1/1) ... [2021-10-21 19:22:17,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:17" (1/1) ... [2021-10-21 19:22:17,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:17" (1/1) ... [2021-10-21 19:22:17,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:17" (1/1) ... [2021-10-21 19:22:17,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:17" (1/1) ... [2021-10-21 19:22:17,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:17" (1/1) ... [2021-10-21 19:22:17,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:17" (1/1) ... [2021-10-21 19:22:17,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:22:17,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:22:17,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:22:17,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:22:17,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:17" (1/1) ... [2021-10-21 19:22:17,525 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:22:17,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:22:17,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:22:17,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:22:17,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:22:17,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:22:17,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:22:17,602 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 19:22:17,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:22:17,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:22:17,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 19:22:17,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 19:22:17,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 19:22:17,605 INFO L138 BoogieDeclarations]: Found implementation of procedure push [2021-10-21 19:22:17,605 INFO L138 BoogieDeclarations]: Found implementation of procedure pop [2021-10-21 19:22:17,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:22:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:22:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 19:22:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 19:22:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 19:22:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 19:22:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:22:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:22:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:22:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:22:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:22:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:22:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:22:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:22:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:22:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:22:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:22:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:22:17,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:22:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:22:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:22:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:22:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:22:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:22:17,609 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:22:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 19:22:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 19:22:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 19:22:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:22:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:22:17,610 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:22:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:22:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:22:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:22:17,611 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:22:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:22:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:22:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:22:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:22:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:22:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:22:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:22:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:22:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:22:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:22:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:22:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:22:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:22:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:22:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:22:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:22:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:22:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:22:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:22:17,617 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:22:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:22:17,618 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:22:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:22:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:22:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:22:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:22:17,619 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:22:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:22:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:22:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:22:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:22:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:22:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:22:17,620 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:22:17,621 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:22:17,621 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:22:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:22:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:22:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:22:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:22:17,622 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:22:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:22:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:22:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:22:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:22:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:22:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:22:17,623 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:22:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:22:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:22:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:22:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:22:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:22:17,624 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:22:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:22:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:22:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:22:17,625 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:22:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:22:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:22:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:22:17,626 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:22:17,627 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:22:17,627 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:22:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:22:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:22:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:22:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:22:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:22:17,628 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:22:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:22:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:22:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:22:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:22:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:22:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:22:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:22:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:22:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 19:22:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure push [2021-10-21 19:22:17,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:22:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 19:22:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:22:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure pop [2021-10-21 19:22:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:22:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 19:22:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:22:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:22:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:22:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:22:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:22:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:22:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-21 19:22:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-21 19:22:18,415 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:22:18,415 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-21 19:22:18,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:22:18 BoogieIcfgContainer [2021-10-21 19:22:18,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:22:18,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:22:18,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:22:18,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:22:18,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:22:16" (1/3) ... [2021-10-21 19:22:18,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4256d2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:22:18, skipping insertion in model container [2021-10-21 19:22:18,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:17" (2/3) ... [2021-10-21 19:22:18,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4256d2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:22:18, skipping insertion in model container [2021-10-21 19:22:18,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:22:18" (3/3) ... [2021-10-21 19:22:18,425 INFO L111 eAbstractionObserver]: Analyzing ICFG lockfree-3.2.i [2021-10-21 19:22:18,431 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:22:18,446 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-21 19:22:18,503 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:22:18,513 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:22:18,514 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-21 19:22:18,533 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) [2021-10-21 19:22:18,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:22:18,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:18,543 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:18,544 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:18,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:18,556 INFO L82 PathProgramCache]: Analyzing trace with hash 913050877, now seen corresponding path program 1 times [2021-10-21 19:22:18,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:18,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708496757] [2021-10-21 19:22:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:18,571 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:18,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:18,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:18,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:22:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:18,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 19:22:18,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:18,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:18,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:18,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708496757] [2021-10-21 19:22:18,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708496757] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:18,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:18,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 19:22:18,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063673957] [2021-10-21 19:22:18,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:22:18,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:18,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:22:18,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:22:18,910 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) [2021-10-21 19:22:18,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:18,937 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2021-10-21 19:22:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:22:18,938 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 [2021-10-21 19:22:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:18,950 INFO L225 Difference]: With dead ends: 72 [2021-10-21 19:22:18,951 INFO L226 Difference]: Without dead ends: 69 [2021-10-21 19:22:18,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:22:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-21 19:22:19,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-10-21 19:22:19,012 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) [2021-10-21 19:22:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2021-10-21 19:22:19,016 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 8 [2021-10-21 19:22:19,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:19,016 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2021-10-21 19:22:19,016 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) [2021-10-21 19:22:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2021-10-21 19:22:19,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:22:19,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:19,017 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:19,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-21 19:22:19,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:19,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:19,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:19,220 INFO L82 PathProgramCache]: Analyzing trace with hash 913039345, now seen corresponding path program 1 times [2021-10-21 19:22:19,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:19,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806865138] [2021-10-21 19:22:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:19,221 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:19,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:19,224 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:19,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:22:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:19,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:22:19,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:19,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:19,612 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:19,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806865138] [2021-10-21 19:22:19,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806865138] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:19,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:19,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-21 19:22:19,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180669815] [2021-10-21 19:22:19,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:22:19,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:19,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:22:19,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:22:19,617 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) [2021-10-21 19:22:19,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:19,684 INFO L93 Difference]: Finished difference Result 120 states and 153 transitions. [2021-10-21 19:22:19,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:22:19,685 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 [2021-10-21 19:22:19,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:19,688 INFO L225 Difference]: With dead ends: 120 [2021-10-21 19:22:19,688 INFO L226 Difference]: Without dead ends: 120 [2021-10-21 19:22:19,689 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:22:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-21 19:22:19,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 102. [2021-10-21 19:22:19,703 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) [2021-10-21 19:22:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 145 transitions. [2021-10-21 19:22:19,707 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 145 transitions. Word has length 8 [2021-10-21 19:22:19,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:19,708 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 145 transitions. [2021-10-21 19:22:19,708 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) [2021-10-21 19:22:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 145 transitions. [2021-10-21 19:22:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:22:19,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:19,709 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:19,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:19,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:19,922 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:19,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:19,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1760552785, now seen corresponding path program 1 times [2021-10-21 19:22:19,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:19,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553764289] [2021-10-21 19:22:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:19,924 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:19,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:19,925 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:19,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:22:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:20,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:22:20,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:20,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:20,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:20,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553764289] [2021-10-21 19:22:20,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553764289] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:20,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:20,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 19:22:20,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139792377] [2021-10-21 19:22:20,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:22:20,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:20,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:22:20,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:22:20,177 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) [2021-10-21 19:22:20,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:20,326 INFO L93 Difference]: Finished difference Result 128 states and 182 transitions. [2021-10-21 19:22:20,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:22:20,327 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 [2021-10-21 19:22:20,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:20,329 INFO L225 Difference]: With dead ends: 128 [2021-10-21 19:22:20,329 INFO L226 Difference]: Without dead ends: 125 [2021-10-21 19:22:20,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:22:20,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-21 19:22:20,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2021-10-21 19:22:20,352 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) [2021-10-21 19:22:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2021-10-21 19:22:20,357 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 9 [2021-10-21 19:22:20,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:20,358 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2021-10-21 19:22:20,358 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) [2021-10-21 19:22:20,358 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2021-10-21 19:22:20,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:22:20,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:20,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:20,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:20,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:20,567 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting pushErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:20,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:20,568 INFO L82 PathProgramCache]: Analyzing trace with hash 370381771, now seen corresponding path program 1 times [2021-10-21 19:22:20,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:20,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108669657] [2021-10-21 19:22:20,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:20,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:20,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:20,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:20,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:22:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:20,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:22:20,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:20,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:22:20,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:20,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:20,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:20,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108669657] [2021-10-21 19:22:20,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108669657] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:20,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:20,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 19:22:20,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748049071] [2021-10-21 19:22:20,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:22:20,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:22:20,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:22:20,874 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) [2021-10-21 19:22:21,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:21,079 INFO L93 Difference]: Finished difference Result 198 states and 290 transitions. [2021-10-21 19:22:21,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:22:21,079 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 [2021-10-21 19:22:21,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:21,082 INFO L225 Difference]: With dead ends: 198 [2021-10-21 19:22:21,082 INFO L226 Difference]: Without dead ends: 198 [2021-10-21 19:22:21,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:22:21,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-21 19:22:21,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 177. [2021-10-21 19:22:21,105 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) [2021-10-21 19:22:21,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 276 transitions. [2021-10-21 19:22:21,122 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 276 transitions. Word has length 11 [2021-10-21 19:22:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:21,122 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 276 transitions. [2021-10-21 19:22:21,122 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) [2021-10-21 19:22:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 276 transitions. [2021-10-21 19:22:21,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:22:21,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:21,123 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:21,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:21,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:21,335 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting pushErr1REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:21,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:21,335 INFO L82 PathProgramCache]: Analyzing trace with hash 370381772, now seen corresponding path program 1 times [2021-10-21 19:22:21,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:21,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775195573] [2021-10-21 19:22:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:21,336 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:21,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:21,337 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:21,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 19:22:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:21,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:22:21,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:21,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:22:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:21,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:21,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:21,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775195573] [2021-10-21 19:22:21,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775195573] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:21,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:21,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-21 19:22:21,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873400058] [2021-10-21 19:22:21,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:22:21,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:21,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:22:21,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:22:21,674 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) [2021-10-21 19:22:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:22,014 INFO L93 Difference]: Finished difference Result 333 states and 499 transitions. [2021-10-21 19:22:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:22:22,017 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 [2021-10-21 19:22:22,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:22,021 INFO L225 Difference]: With dead ends: 333 [2021-10-21 19:22:22,022 INFO L226 Difference]: Without dead ends: 333 [2021-10-21 19:22:22,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:22:22,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-10-21 19:22:22,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 295. [2021-10-21 19:22:22,079 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) [2021-10-21 19:22:22,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 472 transitions. [2021-10-21 19:22:22,085 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 472 transitions. Word has length 11 [2021-10-21 19:22:22,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:22,086 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 472 transitions. [2021-10-21 19:22:22,086 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) [2021-10-21 19:22:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 472 transitions. [2021-10-21 19:22:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:22:22,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:22,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:22,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:22,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:22,295 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting pushErr4REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:22,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:22,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1403059964, now seen corresponding path program 1 times [2021-10-21 19:22:22,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:22,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360245820] [2021-10-21 19:22:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:22,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:22,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:22,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:22,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 19:22:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:22,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:22:22,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:22,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:22,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:22,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360245820] [2021-10-21 19:22:22,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360245820] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:22,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:22,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 19:22:22,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042849121] [2021-10-21 19:22:22,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:22:22,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:22,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:22:22,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:22:22,623 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) [2021-10-21 19:22:22,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:22,664 INFO L93 Difference]: Finished difference Result 212 states and 298 transitions. [2021-10-21 19:22:22,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:22:22,665 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 [2021-10-21 19:22:22,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:22,668 INFO L225 Difference]: With dead ends: 212 [2021-10-21 19:22:22,668 INFO L226 Difference]: Without dead ends: 212 [2021-10-21 19:22:22,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-21 19:22:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 181. [2021-10-21 19:22:22,680 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) [2021-10-21 19:22:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 271 transitions. [2021-10-21 19:22:22,683 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 271 transitions. Word has length 12 [2021-10-21 19:22:22,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:22,683 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 271 transitions. [2021-10-21 19:22:22,683 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) [2021-10-21 19:22:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 271 transitions. [2021-10-21 19:22:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:22:22,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:22,684 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:22,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:22,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:22,899 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting popErr0REQUIRES_VIOLATION === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:22,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:22,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2074754906, now seen corresponding path program 1 times [2021-10-21 19:22:22,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:22,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956508535] [2021-10-21 19:22:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:22,900 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:22,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:22,901 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:22,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 19:22:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:23,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:22:23,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:23,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:23,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:23,219 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:23,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956508535] [2021-10-21 19:22:23,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956508535] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:23,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:23,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 19:22:23,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232703898] [2021-10-21 19:22:23,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:22:23,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:23,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:22:23,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:22:23,223 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) [2021-10-21 19:22:23,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:23,273 INFO L93 Difference]: Finished difference Result 281 states and 404 transitions. [2021-10-21 19:22:23,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:22:23,274 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 [2021-10-21 19:22:23,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:23,282 INFO L225 Difference]: With dead ends: 281 [2021-10-21 19:22:23,282 INFO L226 Difference]: Without dead ends: 281 [2021-10-21 19:22:23,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:23,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-10-21 19:22:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-10-21 19:22:23,301 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) [2021-10-21 19:22:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 404 transitions. [2021-10-21 19:22:23,304 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 404 transitions. Word has length 13 [2021-10-21 19:22:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:23,305 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 404 transitions. [2021-10-21 19:22:23,305 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) [2021-10-21 19:22:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 404 transitions. [2021-10-21 19:22:23,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:22:23,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:23,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:23,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:23,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:23,519 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr5ENSURES_VIOLATIONMEMORY_LEAK === [pushErr0REQUIRES_VIOLATION, pushErr1REQUIRES_VIOLATION, pushErr2REQUIRES_VIOLATION, pushErr3REQUIRES_VIOLATION, pushErr4REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:22:23,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:23,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1772709125, now seen corresponding path program 1 times [2021-10-21 19:22:23,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:23,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585787441] [2021-10-21 19:22:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:23,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:23,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:23,521 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:23,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 19:22:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:22:23,724 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:22:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:22:23,875 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 19:22:23,875 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:22:23,876 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr5ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:22:23,878 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr0REQUIRES_VIOLATION [2021-10-21 19:22:23,878 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr1REQUIRES_VIOLATION [2021-10-21 19:22:23,878 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr2REQUIRES_VIOLATION [2021-10-21 19:22:23,879 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr3REQUIRES_VIOLATION [2021-10-21 19:22:23,879 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr4REQUIRES_VIOLATION [2021-10-21 19:22:23,879 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr5REQUIRES_VIOLATION [2021-10-21 19:22:23,879 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr6REQUIRES_VIOLATION [2021-10-21 19:22:23,879 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location pushErr7REQUIRES_VIOLATION [2021-10-21 19:22:23,879 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr0REQUIRES_VIOLATION [2021-10-21 19:22:23,880 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr1REQUIRES_VIOLATION [2021-10-21 19:22:23,880 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr2REQUIRES_VIOLATION [2021-10-21 19:22:23,880 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr3REQUIRES_VIOLATION [2021-10-21 19:22:23,880 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr4REQUIRES_VIOLATION [2021-10-21 19:22:23,880 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location popErr5REQUIRES_VIOLATION [2021-10-21 19:22:23,881 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 19:22:23,881 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 19:22:23,881 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:22:23,881 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:22:23,881 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:22:23,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-21 19:22:24,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:24,100 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:22:24,121 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-21 19:22:24,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:22:24 BoogieIcfgContainer [2021-10-21 19:22:24,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:22:24,147 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:22:24,147 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:22:24,148 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:22:24,148 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:22:18" (3/4) ... [2021-10-21 19:22:24,152 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:22:24,152 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:22:24,154 INFO L168 Benchmark]: Toolchain (without parser) took 7403.73 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 51.4 MB in the beginning and 91.8 MB in the end (delta: -40.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:22:24,154 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:22:24,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.39 ms. Allocated memory is still 88.1 MB. Free memory was 51.2 MB in the beginning and 63.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:24,156 INFO L168 Benchmark]: Boogie Preprocessor took 131.27 ms. Allocated memory is still 88.1 MB. Free memory was 63.7 MB in the beginning and 60.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:24,157 INFO L168 Benchmark]: RCFGBuilder took 902.15 ms. Allocated memory is still 88.1 MB. Free memory was 60.5 MB in the beginning and 62.6 MB in the end (delta: -2.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:24,157 INFO L168 Benchmark]: TraceAbstraction took 5727.55 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 62.2 MB in the beginning and 91.8 MB in the end (delta: -29.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:24,158 INFO L168 Benchmark]: Witness Printer took 4.85 ms. Allocated memory is still 121.6 MB. Free memory is still 91.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:22:24,161 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 631.39 ms. Allocated memory is still 88.1 MB. Free memory was 51.2 MB in the beginning and 63.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 131.27 ms. Allocated memory is still 88.1 MB. Free memory was 63.7 MB in the beginning and 60.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 902.15 ms. Allocated memory is still 88.1 MB. Free memory was 60.5 MB in the beginning and 62.6 MB in the end (delta: -2.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5727.55 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 62.2 MB in the beginning and 91.8 MB in the end (delta: -29.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.85 ms. Allocated memory is still 121.6 MB. Free memory is still 91.8 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 5600.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 18.0ms, AutomataDifference: 954.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 668 SDtfs, 519 SDslu, 494 SDs, 0 SdLazy, 164 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 618.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.0ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 232.0ms AutomataMinimizationTime, 7 MinimizatonAttempts, 118 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 144.8ms SsaConstructionTime, 425.9ms SatisfiabilityAnalysisTime, 960.8ms 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 [2021-10-21 19:22:24,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f0c9f-0958-4660-81b0-27fd17ad2e90/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...