./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c106345e9477571987e92ea289ca141c8dda13e5ec4cb633eccf96e295486f4c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:30:59,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:30:59,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:30:59,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:30:59,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:30:59,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:30:59,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:30:59,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:30:59,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:30:59,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:30:59,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:30:59,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:30:59,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:30:59,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:30:59,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:30:59,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:30:59,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:30:59,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:30:59,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:30:59,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:30:59,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:30:59,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:30:59,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:30:59,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:30:59,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:30:59,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:30:59,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:30:59,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:30:59,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:30:59,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:30:59,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:30:59,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:30:59,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:30:59,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:30:59,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:30:59,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:30:59,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:30:59,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:30:59,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:30:59,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:30:59,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:30:59,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:30:59,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:30:59,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:30:59,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:30:59,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:30:59,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:30:59,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:30:59,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:30:59,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:30:59,961 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:30:59,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:30:59,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:30:59,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:30:59,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:30:59,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:30:59,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:30:59,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:30:59,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:30:59,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:30:59,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:30:59,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:30:59,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:30:59,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:30:59,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:30:59,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:30:59,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:30:59,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:30:59,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:30:59,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:30:59,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:30:59,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:30:59,967 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:30:59,968 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:30:59,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:30:59,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:30:59,968 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_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c106345e9477571987e92ea289ca141c8dda13e5ec4cb633eccf96e295486f4c [2021-11-13 17:31:00,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:31:00,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:31:00,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:31:00,262 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:31:00,263 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:31:00,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2021-11-13 17:31:00,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/data/40f3871ef/4611bef5820a419191771e7ecde7d7ad/FLAG9e50577c5 [2021-11-13 17:31:00,834 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:31:00,840 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2021-11-13 17:31:00,852 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/data/40f3871ef/4611bef5820a419191771e7ecde7d7ad/FLAG9e50577c5 [2021-11-13 17:31:01,162 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/data/40f3871ef/4611bef5820a419191771e7ecde7d7ad [2021-11-13 17:31:01,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:31:01,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:31:01,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:01,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:31:01,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:31:01,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c722de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01, skipping insertion in model container [2021-11-13 17:31:01,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:31:01,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:31:01,422 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c[914,927] [2021-11-13 17:31:01,472 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c[7125,7138] [2021-11-13 17:31:01,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:01,539 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:31:01,554 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c[914,927] [2021-11-13 17:31:01,607 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c[7125,7138] [2021-11-13 17:31:01,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:01,652 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:31:01,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01 WrapperNode [2021-11-13 17:31:01,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:01,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:01,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:31:01,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:31:01,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:01,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:31:01,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:31:01,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:31:01,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:31:01,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:31:01,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:31:01,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:31:01,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:01,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:31:01,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:31:01,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:31:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:31:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-13 17:31:01,865 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-13 17:31:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-13 17:31:01,865 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-13 17:31:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-13 17:31:01,866 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-13 17:31:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-13 17:31:01,866 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-13 17:31:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-13 17:31:01,866 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-13 17:31:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-13 17:31:01,867 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-13 17:31:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-13 17:31:01,867 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-13 17:31:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-13 17:31:01,867 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-13 17:31:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-13 17:31:01,868 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-13 17:31:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-13 17:31:01,868 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-13 17:31:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-13 17:31:01,868 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-13 17:31:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:31:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-13 17:31:01,869 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-13 17:31:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-13 17:31:01,869 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-13 17:31:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:31:01,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:31:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-13 17:31:01,869 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-13 17:31:02,601 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:31:02,601 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-13 17:31:02,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:02 BoogieIcfgContainer [2021-11-13 17:31:02,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:31:02,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:31:02,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:31:02,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:31:02,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:31:01" (1/3) ... [2021-11-13 17:31:02,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee64fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:02, skipping insertion in model container [2021-11-13 17:31:02,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01" (2/3) ... [2021-11-13 17:31:02,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee64fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:02, skipping insertion in model container [2021-11-13 17:31:02,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:02" (3/3) ... [2021-11-13 17:31:02,618 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2021-11-13 17:31:02,624 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:31:02,624 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 17:31:02,677 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:31:02,684 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:31:02,685 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 17:31:02,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 186 states have (on average 1.553763440860215) internal successors, (289), 193 states have internal predecessors, (289), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 17:31:02,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:02,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:02,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:02,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash 381071048, now seen corresponding path program 1 times [2021-11-13 17:31:02,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:02,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670215703] [2021-11-13 17:31:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:02,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:03,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:31:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:03,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:31:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:03,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:31:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:03,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:03,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:31:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 17:31:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:03,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:31:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:03,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:03,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670215703] [2021-11-13 17:31:03,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670215703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:03,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:03,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:31:03,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147314300] [2021-11-13 17:31:03,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:03,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:31:03,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:03,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:31:03,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:31:03,182 INFO L87 Difference]: Start difference. First operand has 234 states, 186 states have (on average 1.553763440860215) internal successors, (289), 193 states have internal predecessors, (289), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-13 17:31:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:03,846 INFO L93 Difference]: Finished difference Result 469 states and 703 transitions. [2021-11-13 17:31:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:31:03,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2021-11-13 17:31:03,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:03,873 INFO L225 Difference]: With dead ends: 469 [2021-11-13 17:31:03,874 INFO L226 Difference]: Without dead ends: 242 [2021-11-13 17:31:03,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:31:03,887 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 459 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 296.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.29ms SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 363.77ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:03,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 730 Invalid, 303 Unknown, 0 Unchecked, 32.29ms Time], IncrementalHoareTripleChecker [112 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 363.77ms Time] [2021-11-13 17:31:03,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-13 17:31:03,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 224. [2021-11-13 17:31:03,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 178 states have (on average 1.449438202247191) internal successors, (258), 183 states have internal predecessors, (258), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 17:31:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 317 transitions. [2021-11-13 17:31:03,993 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 317 transitions. Word has length 59 [2021-11-13 17:31:03,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:03,994 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 317 transitions. [2021-11-13 17:31:03,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-13 17:31:03,994 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 317 transitions. [2021-11-13 17:31:04,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:04,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:04,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:04,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:31:04,008 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:04,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:04,010 INFO L85 PathProgramCache]: Analyzing trace with hash 862151306, now seen corresponding path program 1 times [2021-11-13 17:31:04,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:04,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20299932] [2021-11-13 17:31:04,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:04,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:31:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:04,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:31:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:04,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:31:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:04,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:31:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:04,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 17:31:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:04,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:31:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:04,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:04,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20299932] [2021-11-13 17:31:04,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20299932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:04,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:04,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:31:04,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123203764] [2021-11-13 17:31:04,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:04,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:31:04,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:04,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:31:04,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:31:04,334 INFO L87 Difference]: Start difference. First operand 224 states and 317 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-13 17:31:05,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:05,165 INFO L93 Difference]: Finished difference Result 449 states and 633 transitions. [2021-11-13 17:31:05,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 17:31:05,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2021-11-13 17:31:05,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:05,174 INFO L225 Difference]: With dead ends: 449 [2021-11-13 17:31:05,174 INFO L226 Difference]: Without dead ends: 360 [2021-11-13 17:31:05,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:31:05,183 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 598 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 499.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.63ms SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 617.63ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:05,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 1071 Invalid, 760 Unknown, 0 Unchecked, 27.63ms Time], IncrementalHoareTripleChecker [174 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 617.63ms Time] [2021-11-13 17:31:05,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-13 17:31:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 320. [2021-11-13 17:31:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 254 states have (on average 1.4251968503937007) internal successors, (362), 261 states have internal predecessors, (362), 42 states have call successors, (42), 21 states have call predecessors, (42), 22 states have return successors, (44), 40 states have call predecessors, (44), 39 states have call successors, (44) [2021-11-13 17:31:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 448 transitions. [2021-11-13 17:31:05,262 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 448 transitions. Word has length 59 [2021-11-13 17:31:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:05,263 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 448 transitions. [2021-11-13 17:31:05,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-13 17:31:05,264 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 448 transitions. [2021-11-13 17:31:05,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:05,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:05,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:05,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:31:05,269 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:05,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:05,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1624800937, now seen corresponding path program 1 times [2021-11-13 17:31:05,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:05,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100723439] [2021-11-13 17:31:05,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:05,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:05,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:31:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:05,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:31:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:05,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:31:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:05,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:05,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:31:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:05,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 17:31:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:31:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:05,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:05,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100723439] [2021-11-13 17:31:05,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100723439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:05,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:05,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:31:05,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337998206] [2021-11-13 17:31:05,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:05,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:31:05,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:05,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:31:05,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:31:05,459 INFO L87 Difference]: Start difference. First operand 320 states and 448 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:31:06,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:06,139 INFO L93 Difference]: Finished difference Result 535 states and 743 transitions. [2021-11-13 17:31:06,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:31:06,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2021-11-13 17:31:06,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:06,144 INFO L225 Difference]: With dead ends: 535 [2021-11-13 17:31:06,144 INFO L226 Difference]: Without dead ends: 357 [2021-11-13 17:31:06,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:31:06,146 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 368 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 408.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.53ms SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 504.89ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:06,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 1379 Invalid, 746 Unknown, 0 Unchecked, 16.53ms Time], IncrementalHoareTripleChecker [115 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 504.89ms Time] [2021-11-13 17:31:06,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-13 17:31:06,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 325. [2021-11-13 17:31:06,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 258 states have (on average 1.4147286821705427) internal successors, (365), 265 states have internal predecessors, (365), 42 states have call successors, (42), 21 states have call predecessors, (42), 23 states have return successors, (45), 41 states have call predecessors, (45), 39 states have call successors, (45) [2021-11-13 17:31:06,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 452 transitions. [2021-11-13 17:31:06,177 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 452 transitions. Word has length 59 [2021-11-13 17:31:06,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:06,178 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 452 transitions. [2021-11-13 17:31:06,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:31:06,178 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 452 transitions. [2021-11-13 17:31:06,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:06,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:06,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:06,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:31:06,181 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:06,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1899560551, now seen corresponding path program 1 times [2021-11-13 17:31:06,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:06,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10153826] [2021-11-13 17:31:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:06,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:31:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:31:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:31:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:31:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 17:31:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:31:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:06,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:06,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10153826] [2021-11-13 17:31:06,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10153826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:06,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:06,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 17:31:06,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95400589] [2021-11-13 17:31:06,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:06,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:31:06,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:06,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:31:06,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:31:06,327 INFO L87 Difference]: Start difference. First operand 325 states and 452 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-13 17:31:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:08,092 INFO L93 Difference]: Finished difference Result 1239 states and 1680 transitions. [2021-11-13 17:31:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 17:31:08,092 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 59 [2021-11-13 17:31:08,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:08,103 INFO L225 Difference]: With dead ends: 1239 [2021-11-13 17:31:08,103 INFO L226 Difference]: Without dead ends: 1044 [2021-11-13 17:31:08,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-11-13 17:31:08,106 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 2085 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 980.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.06ms SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1189.76ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:08,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2101 Valid, 1472 Invalid, 1892 Unknown, 0 Unchecked, 27.06ms Time], IncrementalHoareTripleChecker [607 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1189.76ms Time] [2021-11-13 17:31:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-11-13 17:31:08,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 906. [2021-11-13 17:31:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 720 states have (on average 1.3611111111111112) internal successors, (980), 735 states have internal predecessors, (980), 99 states have call successors, (99), 74 states have call predecessors, (99), 85 states have return successors, (114), 98 states have call predecessors, (114), 96 states have call successors, (114) [2021-11-13 17:31:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1193 transitions. [2021-11-13 17:31:08,184 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1193 transitions. Word has length 59 [2021-11-13 17:31:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:08,185 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1193 transitions. [2021-11-13 17:31:08,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-13 17:31:08,185 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1193 transitions. [2021-11-13 17:31:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:08,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:08,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:08,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:31:08,187 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:08,187 INFO L85 PathProgramCache]: Analyzing trace with hash 927885864, now seen corresponding path program 1 times [2021-11-13 17:31:08,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:08,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115154980] [2021-11-13 17:31:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:08,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:31:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:31:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:31:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:31:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 17:31:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:31:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:08,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:08,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115154980] [2021-11-13 17:31:08,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115154980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:08,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:08,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:31:08,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005157504] [2021-11-13 17:31:08,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:08,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:31:08,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:08,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:31:08,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:31:08,363 INFO L87 Difference]: Start difference. First operand 906 states and 1193 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:31:09,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:09,056 INFO L93 Difference]: Finished difference Result 1788 states and 2337 transitions. [2021-11-13 17:31:09,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:31:09,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2021-11-13 17:31:09,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:09,064 INFO L225 Difference]: With dead ends: 1788 [2021-11-13 17:31:09,064 INFO L226 Difference]: Without dead ends: 1018 [2021-11-13 17:31:09,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:31:09,067 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 369 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 397.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.40ms SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 493.13ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:09,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 1360 Invalid, 745 Unknown, 0 Unchecked, 12.40ms Time], IncrementalHoareTripleChecker [118 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 493.13ms Time] [2021-11-13 17:31:09,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2021-11-13 17:31:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 926. [2021-11-13 17:31:09,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 736 states have (on average 1.346467391304348) internal successors, (991), 751 states have internal predecessors, (991), 99 states have call successors, (99), 74 states have call predecessors, (99), 89 states have return successors, (118), 102 states have call predecessors, (118), 96 states have call successors, (118) [2021-11-13 17:31:09,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1208 transitions. [2021-11-13 17:31:09,136 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1208 transitions. Word has length 59 [2021-11-13 17:31:09,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:09,136 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1208 transitions. [2021-11-13 17:31:09,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:31:09,137 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1208 transitions. [2021-11-13 17:31:09,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:09,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:09,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:09,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:31:09,139 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:09,140 INFO L85 PathProgramCache]: Analyzing trace with hash -877552470, now seen corresponding path program 1 times [2021-11-13 17:31:09,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:09,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222674066] [2021-11-13 17:31:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:09,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:09,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:31:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:09,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:31:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:09,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:31:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:09,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:31:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:09,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 17:31:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:09,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:31:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:09,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:09,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222674066] [2021-11-13 17:31:09,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222674066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:09,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:09,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:31:09,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038921244] [2021-11-13 17:31:09,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:09,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:31:09,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:31:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:31:09,279 INFO L87 Difference]: Start difference. First operand 926 states and 1208 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-13 17:31:10,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:10,212 INFO L93 Difference]: Finished difference Result 2496 states and 3157 transitions. [2021-11-13 17:31:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 17:31:10,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2021-11-13 17:31:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:10,225 INFO L225 Difference]: With dead ends: 2496 [2021-11-13 17:31:10,225 INFO L226 Difference]: Without dead ends: 1707 [2021-11-13 17:31:10,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-13 17:31:10,229 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 637 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 543.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.66ms SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 671.60ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:10,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 1118 Invalid, 903 Unknown, 0 Unchecked, 13.66ms Time], IncrementalHoareTripleChecker [133 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 671.60ms Time] [2021-11-13 17:31:10,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-11-13 17:31:10,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1374. [2021-11-13 17:31:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 1089 states have (on average 1.322314049586777) internal successors, (1440), 1113 states have internal predecessors, (1440), 145 states have call successors, (145), 113 states have call predecessors, (145), 138 states have return successors, (190), 150 states have call predecessors, (190), 142 states have call successors, (190) [2021-11-13 17:31:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1775 transitions. [2021-11-13 17:31:10,358 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1775 transitions. Word has length 59 [2021-11-13 17:31:10,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:10,359 INFO L470 AbstractCegarLoop]: Abstraction has 1374 states and 1775 transitions. [2021-11-13 17:31:10,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-13 17:31:10,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1775 transitions. [2021-11-13 17:31:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:10,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:10,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:10,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:31:10,361 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:10,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1423270120, now seen corresponding path program 1 times [2021-11-13 17:31:10,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:10,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208498215] [2021-11-13 17:31:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:10,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:31:10,383 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:31:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:31:10,455 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:31:10,455 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:31:10,456 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-13 17:31:10,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-13 17:31:10,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:31:10,465 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:10,469 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:31:10,530 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:31:10,536 INFO L158 Benchmark]: Toolchain (without parser) took 9366.63ms. Allocated memory was 104.9MB in the beginning and 176.2MB in the end (delta: 71.3MB). Free memory was 63.8MB in the beginning and 129.2MB in the end (delta: -65.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-11-13 17:31:10,536 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 104.9MB. Free memory is still 80.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:31:10,536 INFO L158 Benchmark]: CACSL2BoogieTranslator took 486.03ms. Allocated memory is still 104.9MB. Free memory was 63.6MB in the beginning and 74.9MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 17:31:10,537 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.13ms. Allocated memory is still 104.9MB. Free memory was 74.9MB in the beginning and 72.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:31:10,537 INFO L158 Benchmark]: Boogie Preprocessor took 59.47ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 69.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:31:10,537 INFO L158 Benchmark]: RCFGBuilder took 824.86ms. Allocated memory is still 104.9MB. Free memory was 69.8MB in the beginning and 44.4MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-13 17:31:10,538 INFO L158 Benchmark]: TraceAbstraction took 7922.86ms. Allocated memory was 104.9MB in the beginning and 176.2MB in the end (delta: 71.3MB). Free memory was 44.0MB in the beginning and 129.2MB in the end (delta: -85.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:31:10,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 104.9MB. Free memory is still 80.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 486.03ms. Allocated memory is still 104.9MB. Free memory was 63.6MB in the beginning and 74.9MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.13ms. Allocated memory is still 104.9MB. Free memory was 74.9MB in the beginning and 72.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.47ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 69.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 824.86ms. Allocated memory is still 104.9MB. Free memory was 69.8MB in the beginning and 44.4MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 7922.86ms. Allocated memory was 104.9MB in the beginning and 176.2MB in the end (delta: 71.3MB). Free memory was 44.0MB in the beginning and 129.2MB in the end (delta: -85.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:31:10,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c106345e9477571987e92ea289ca141c8dda13e5ec4cb633eccf96e295486f4c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:31:13,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:31:13,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:31:13,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:31:13,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:31:13,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:31:13,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:31:13,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:31:13,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:31:13,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:31:13,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:31:13,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:31:13,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:31:13,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:31:13,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:31:13,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:31:13,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:31:13,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:31:13,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:31:13,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:31:13,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:31:13,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:31:13,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:31:13,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:31:13,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:31:13,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:31:13,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:31:13,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:31:13,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:31:13,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:31:13,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:31:13,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:31:13,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:31:13,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:31:13,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:31:13,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:31:13,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:31:13,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:31:13,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:31:13,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:31:13,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:31:13,368 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 17:31:13,399 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:31:13,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:31:13,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:31:13,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:31:13,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:31:13,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:31:13,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:31:13,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:31:13,404 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:31:13,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:31:13,405 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:31:13,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:31:13,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:31:13,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:31:13,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:31:13,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:31:13,407 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:31:13,407 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:31:13,407 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:31:13,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:31:13,408 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:31:13,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:31:13,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:31:13,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:31:13,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:31:13,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:13,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:31:13,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:31:13,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:31:13,410 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:31:13,411 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:31:13,411 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:31:13,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:31:13,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:31:13,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:31:13,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:31:13,413 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_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c106345e9477571987e92ea289ca141c8dda13e5ec4cb633eccf96e295486f4c [2021-11-13 17:31:13,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:31:13,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:31:13,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:31:13,944 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:31:13,945 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:31:13,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2021-11-13 17:31:14,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/data/667764aab/09a1e427c60a486e90f7c9e0effe8edd/FLAGd9ab9d711 [2021-11-13 17:31:14,794 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:31:14,797 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2021-11-13 17:31:14,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/data/667764aab/09a1e427c60a486e90f7c9e0effe8edd/FLAGd9ab9d711 [2021-11-13 17:31:15,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/data/667764aab/09a1e427c60a486e90f7c9e0effe8edd [2021-11-13 17:31:15,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:31:15,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:31:15,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:15,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:31:15,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:31:15,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:15" (1/1) ... [2021-11-13 17:31:15,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d06c849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:15, skipping insertion in model container [2021-11-13 17:31:15,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:15" (1/1) ... [2021-11-13 17:31:15,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:31:15,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:31:15,311 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c[914,927] [2021-11-13 17:31:15,404 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c[7125,7138] [2021-11-13 17:31:15,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:15,525 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:31:15,558 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c[914,927] [2021-11-13 17:31:15,601 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.02.cil-1.c[7125,7138] [2021-11-13 17:31:15,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:15,693 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:31:15,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:15 WrapperNode [2021-11-13 17:31:15,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:15,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:15,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:31:15,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:31:15,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:15" (1/1) ... [2021-11-13 17:31:15,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:15" (1/1) ... [2021-11-13 17:31:15,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:15,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:31:15,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:31:15,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:31:15,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:15" (1/1) ... [2021-11-13 17:31:15,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:15" (1/1) ... [2021-11-13 17:31:15,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:15" (1/1) ... [2021-11-13 17:31:15,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:15" (1/1) ... [2021-11-13 17:31:15,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:15" (1/1) ... [2021-11-13 17:31:15,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:15" (1/1) ... [2021-11-13 17:31:15,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:15" (1/1) ... [2021-11-13 17:31:15,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:31:15,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:31:15,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:31:15,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:31:15,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:15" (1/1) ... [2021-11-13 17:31:15,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:15,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:31:15,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:31:15,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:31:15,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:31:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-13 17:31:15,980 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-13 17:31:15,981 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-13 17:31:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-13 17:31:15,983 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-13 17:31:15,983 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-13 17:31:15,983 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-13 17:31:15,984 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-13 17:31:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-13 17:31:15,991 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-13 17:31:15,991 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-13 17:31:15,991 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-13 17:31:15,991 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-13 17:31:15,991 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-13 17:31:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-13 17:31:15,992 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-13 17:31:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:31:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-13 17:31:15,992 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-13 17:31:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-13 17:31:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-13 17:31:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-13 17:31:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-13 17:31:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-13 17:31:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-13 17:31:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-13 17:31:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-13 17:31:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:31:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:31:15,995 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-13 17:31:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-13 17:31:16,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:31:16,987 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-13 17:31:16,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:16 BoogieIcfgContainer [2021-11-13 17:31:16,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:31:16,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:31:16,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:31:16,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:31:16,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:31:15" (1/3) ... [2021-11-13 17:31:16,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec81bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:16, skipping insertion in model container [2021-11-13 17:31:16,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:15" (2/3) ... [2021-11-13 17:31:16,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec81bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:16, skipping insertion in model container [2021-11-13 17:31:16,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:16" (3/3) ... [2021-11-13 17:31:17,000 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2+token_ring.02.cil-1.c [2021-11-13 17:31:17,006 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:31:17,007 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 17:31:17,083 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:31:17,097 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:31:17,097 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 17:31:17,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 186 states have (on average 1.553763440860215) internal successors, (289), 193 states have internal predecessors, (289), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 17:31:17,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:17,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:17,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:17,156 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:17,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:17,163 INFO L85 PathProgramCache]: Analyzing trace with hash 381071048, now seen corresponding path program 1 times [2021-11-13 17:31:17,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:17,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138684661] [2021-11-13 17:31:17,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:17,179 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:17,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:17,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:17,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:31:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:17,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:31:17,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:17,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:17,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:17,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138684661] [2021-11-13 17:31:17,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138684661] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:17,855 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:17,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:31:17,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546380528] [2021-11-13 17:31:17,859 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:17,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:31:17,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:17,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:31:17,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:31:17,919 INFO L87 Difference]: Start difference. First operand has 234 states, 186 states have (on average 1.553763440860215) internal successors, (289), 193 states have internal predecessors, (289), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 17:31:18,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:18,033 INFO L93 Difference]: Finished difference Result 451 states and 675 transitions. [2021-11-13 17:31:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:31:18,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 59 [2021-11-13 17:31:18,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:18,054 INFO L225 Difference]: With dead ends: 451 [2021-11-13 17:31:18,058 INFO L226 Difference]: Without dead ends: 224 [2021-11-13 17:31:18,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:31:18,076 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 129 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.64ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:18,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 514 Invalid, 2 Unknown, 0 Unchecked, 12.10ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 12.64ms Time] [2021-11-13 17:31:18,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-13 17:31:18,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-11-13 17:31:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 178 states have (on average 1.449438202247191) internal successors, (258), 183 states have internal predecessors, (258), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 17:31:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 317 transitions. [2021-11-13 17:31:18,147 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 317 transitions. Word has length 59 [2021-11-13 17:31:18,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:18,149 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 317 transitions. [2021-11-13 17:31:18,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 17:31:18,150 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 317 transitions. [2021-11-13 17:31:18,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:18,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:18,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:18,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:18,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:18,364 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:18,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:18,365 INFO L85 PathProgramCache]: Analyzing trace with hash 862151306, now seen corresponding path program 1 times [2021-11-13 17:31:18,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:18,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68573108] [2021-11-13 17:31:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:18,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:18,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:18,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:18,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:31:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:18,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:31:18,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:18,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:19,007 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:19,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68573108] [2021-11-13 17:31:19,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68573108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:19,011 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:19,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 17:31:19,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655665485] [2021-11-13 17:31:19,013 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:19,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:31:19,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:19,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:31:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:31:19,020 INFO L87 Difference]: Start difference. First operand 224 states and 317 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 17:31:19,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:19,851 INFO L93 Difference]: Finished difference Result 420 states and 593 transitions. [2021-11-13 17:31:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:31:19,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 59 [2021-11-13 17:31:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:19,859 INFO L225 Difference]: With dead ends: 420 [2021-11-13 17:31:19,859 INFO L226 Difference]: Without dead ends: 331 [2021-11-13 17:31:19,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:31:19,862 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 452 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 554.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.07ms SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 694.38ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:19,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 935 Invalid, 564 Unknown, 0 Unchecked, 22.07ms Time], IncrementalHoareTripleChecker [94 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 694.38ms Time] [2021-11-13 17:31:19,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-11-13 17:31:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 326. [2021-11-13 17:31:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 258 states have (on average 1.4224806201550388) internal successors, (367), 265 states have internal predecessors, (367), 43 states have call successors, (43), 22 states have call predecessors, (43), 23 states have return successors, (47), 41 states have call predecessors, (47), 40 states have call successors, (47) [2021-11-13 17:31:19,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 457 transitions. [2021-11-13 17:31:19,955 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 457 transitions. Word has length 59 [2021-11-13 17:31:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:19,956 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 457 transitions. [2021-11-13 17:31:19,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 17:31:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 457 transitions. [2021-11-13 17:31:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:19,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:19,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:19,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:20,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:20,186 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:20,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:20,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1624800937, now seen corresponding path program 1 times [2021-11-13 17:31:20,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:20,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276159505] [2021-11-13 17:31:20,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:20,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:20,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:20,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:20,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:31:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:20,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:31:20,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:20,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:20,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:20,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:20,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276159505] [2021-11-13 17:31:20,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276159505] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:20,674 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:20,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-13 17:31:20,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468645309] [2021-11-13 17:31:20,674 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:20,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:31:20,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:20,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:31:20,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:31:20,676 INFO L87 Difference]: Start difference. First operand 326 states and 457 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 17:31:20,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:20,749 INFO L93 Difference]: Finished difference Result 520 states and 722 transitions. [2021-11-13 17:31:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:31:20,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 59 [2021-11-13 17:31:20,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:20,761 INFO L225 Difference]: With dead ends: 520 [2021-11-13 17:31:20,762 INFO L226 Difference]: Without dead ends: 336 [2021-11-13 17:31:20,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:31:20,765 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 7 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.65ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.27ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:20,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1574 Invalid, 19 Unknown, 0 Unchecked, 6.65ms Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 23.27ms Time] [2021-11-13 17:31:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-11-13 17:31:20,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 331. [2021-11-13 17:31:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 262 states have (on average 1.4122137404580153) internal successors, (370), 269 states have internal predecessors, (370), 43 states have call successors, (43), 22 states have call predecessors, (43), 24 states have return successors, (48), 42 states have call predecessors, (48), 40 states have call successors, (48) [2021-11-13 17:31:20,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 461 transitions. [2021-11-13 17:31:20,834 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 461 transitions. Word has length 59 [2021-11-13 17:31:20,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:20,835 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 461 transitions. [2021-11-13 17:31:20,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 17:31:20,836 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 461 transitions. [2021-11-13 17:31:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:20,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:20,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:20,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:21,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:21,047 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:21,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:21,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1899560551, now seen corresponding path program 1 times [2021-11-13 17:31:21,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:21,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220223852] [2021-11-13 17:31:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:21,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:21,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:21,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:21,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:31:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:21,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:31:21,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:21,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:21,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:21,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220223852] [2021-11-13 17:31:21,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220223852] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:21,498 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:21,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 17:31:21,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449143733] [2021-11-13 17:31:21,500 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:21,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:31:21,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:21,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:31:21,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:21,502 INFO L87 Difference]: Start difference. First operand 331 states and 461 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 17:31:21,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:21,745 INFO L93 Difference]: Finished difference Result 699 states and 956 transitions. [2021-11-13 17:31:21,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:31:21,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 59 [2021-11-13 17:31:21,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:21,751 INFO L225 Difference]: With dead ends: 699 [2021-11-13 17:31:21,751 INFO L226 Difference]: Without dead ends: 510 [2021-11-13 17:31:21,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:21,753 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 397 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.50ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.12ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:21,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 842 Invalid, 129 Unknown, 0 Unchecked, 5.50ms Time], IncrementalHoareTripleChecker [13 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 183.12ms Time] [2021-11-13 17:31:21,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-11-13 17:31:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 495. [2021-11-13 17:31:21,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 391 states have (on average 1.3682864450127876) internal successors, (535), 400 states have internal predecessors, (535), 60 states have call successors, (60), 37 states have call predecessors, (60), 42 states have return successors, (70), 60 states have call predecessors, (70), 57 states have call successors, (70) [2021-11-13 17:31:21,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 665 transitions. [2021-11-13 17:31:21,801 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 665 transitions. Word has length 59 [2021-11-13 17:31:21,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:21,802 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 665 transitions. [2021-11-13 17:31:21,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 17:31:21,802 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 665 transitions. [2021-11-13 17:31:21,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:21,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:21,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:21,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:22,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:22,022 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:22,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:22,023 INFO L85 PathProgramCache]: Analyzing trace with hash 927885864, now seen corresponding path program 1 times [2021-11-13 17:31:22,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:22,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826352521] [2021-11-13 17:31:22,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:22,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:22,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:22,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:22,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:31:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:22,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:31:22,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:22,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:22,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:22,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826352521] [2021-11-13 17:31:22,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826352521] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:22,520 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:22,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-13 17:31:22,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625624550] [2021-11-13 17:31:22,520 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:22,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:31:22,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:22,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:31:22,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:31:22,522 INFO L87 Difference]: Start difference. First operand 495 states and 665 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:31:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:22,627 INFO L93 Difference]: Finished difference Result 862 states and 1142 transitions. [2021-11-13 17:31:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:31:22,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 59 [2021-11-13 17:31:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:22,636 INFO L225 Difference]: With dead ends: 862 [2021-11-13 17:31:22,637 INFO L226 Difference]: Without dead ends: 509 [2021-11-13 17:31:22,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:31:22,640 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 4 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.41ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.54ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:22,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1565 Invalid, 19 Unknown, 0 Unchecked, 14.41ms Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 23.54ms Time] [2021-11-13 17:31:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-11-13 17:31:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 505. [2021-11-13 17:31:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 399 states have (on average 1.355889724310777) internal successors, (541), 408 states have internal predecessors, (541), 60 states have call successors, (60), 37 states have call predecessors, (60), 44 states have return successors, (72), 62 states have call predecessors, (72), 57 states have call successors, (72) [2021-11-13 17:31:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 673 transitions. [2021-11-13 17:31:22,715 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 673 transitions. Word has length 59 [2021-11-13 17:31:22,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:22,717 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 673 transitions. [2021-11-13 17:31:22,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:31:22,718 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 673 transitions. [2021-11-13 17:31:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:22,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:22,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:22,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:22,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:22,936 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:22,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:22,937 INFO L85 PathProgramCache]: Analyzing trace with hash -877552470, now seen corresponding path program 1 times [2021-11-13 17:31:22,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:22,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012057972] [2021-11-13 17:31:22,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:22,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:22,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:22,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:22,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:31:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:23,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 17:31:23,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:23,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:23,521 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:23,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012057972] [2021-11-13 17:31:23,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012057972] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:23,521 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:23,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 17:31:23,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729053150] [2021-11-13 17:31:23,522 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:23,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:31:23,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:23,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:31:23,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:31:23,524 INFO L87 Difference]: Start difference. First operand 505 states and 673 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 17:31:24,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:24,462 INFO L93 Difference]: Finished difference Result 1397 states and 1866 transitions. [2021-11-13 17:31:24,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:31:24,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 59 [2021-11-13 17:31:24,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:24,473 INFO L225 Difference]: With dead ends: 1397 [2021-11-13 17:31:24,474 INFO L226 Difference]: Without dead ends: 1032 [2021-11-13 17:31:24,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:31:24,477 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 632 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 613.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.07ms SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 752.99ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:24,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 780 Invalid, 592 Unknown, 0 Unchecked, 13.07ms Time], IncrementalHoareTripleChecker [117 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 752.99ms Time] [2021-11-13 17:31:24,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2021-11-13 17:31:24,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1027. [2021-11-13 17:31:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 795 states have (on average 1.2918238993710691) internal successors, (1027), 822 states have internal predecessors, (1027), 120 states have call successors, (120), 83 states have call predecessors, (120), 110 states have return successors, (189), 126 states have call predecessors, (189), 117 states have call successors, (189) [2021-11-13 17:31:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1336 transitions. [2021-11-13 17:31:24,583 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1336 transitions. Word has length 59 [2021-11-13 17:31:24,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:24,583 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1336 transitions. [2021-11-13 17:31:24,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 17:31:24,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1336 transitions. [2021-11-13 17:31:24,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:31:24,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:24,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:24,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:24,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:24,807 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:24,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:24,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1423270120, now seen corresponding path program 1 times [2021-11-13 17:31:24,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:24,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657851425] [2021-11-13 17:31:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:24,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:24,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:24,810 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:24,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:31:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:31:24,884 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:31:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:31:25,069 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 17:31:25,069 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:31:25,070 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-13 17:31:25,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-13 17:31:25,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-13 17:31:25,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:25,289 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:25,292 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:31:25,334 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:31:25,336 INFO L158 Benchmark]: Toolchain (without parser) took 10255.97ms. Allocated memory was 58.7MB in the beginning and 117.4MB in the end (delta: 58.7MB). Free memory was 35.8MB in the beginning and 87.1MB in the end (delta: -51.3MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. [2021-11-13 17:31:25,336 INFO L158 Benchmark]: CDTParser took 0.90ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:31:25,337 INFO L158 Benchmark]: CACSL2BoogieTranslator took 612.90ms. Allocated memory is still 58.7MB. Free memory was 35.6MB in the beginning and 37.0MB in the end (delta: -1.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-13 17:31:25,337 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.98ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 34.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:31:25,338 INFO L158 Benchmark]: Boogie Preprocessor took 86.25ms. Allocated memory is still 58.7MB. Free memory was 34.0MB in the beginning and 31.4MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:31:25,338 INFO L158 Benchmark]: RCFGBuilder took 1124.33ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 31.4MB in the beginning and 41.4MB in the end (delta: -10.0MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2021-11-13 17:31:25,339 INFO L158 Benchmark]: TraceAbstraction took 8343.69ms. Allocated memory was 77.6MB in the beginning and 117.4MB in the end (delta: 39.8MB). Free memory was 40.8MB in the beginning and 87.1MB in the end (delta: -46.3MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. [2021-11-13 17:31:25,340 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 612.90ms. Allocated memory is still 58.7MB. Free memory was 35.6MB in the beginning and 37.0MB in the end (delta: -1.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.98ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 34.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.25ms. Allocated memory is still 58.7MB. Free memory was 34.0MB in the beginning and 31.4MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1124.33ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 31.4MB in the beginning and 41.4MB in the end (delta: -10.0MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8343.69ms. Allocated memory was 77.6MB in the beginning and 117.4MB in the end (delta: 39.8MB). Free memory was 40.8MB in the beginning and 87.1MB in the end (delta: -46.3MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:31:25,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80493b26-ec3d-4e08-bc00-fa7ddc4a8721/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null