./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/lamport.i --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_7a5e71bc-9f69-41f9-a3f2-a9084f602122/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/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_7a5e71bc-9f69-41f9-a3f2-a9084f602122/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/lamport.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/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_7a5e71bc-9f69-41f9-a3f2-a9084f602122/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 c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:01:43,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:01:43,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:01:43,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:01:43,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:01:43,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:01:43,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:01:43,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:01:43,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:01:43,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:01:43,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:01:43,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:01:43,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:01:43,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:01:43,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:01:43,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:01:43,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:01:43,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:01:43,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:01:43,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:01:43,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:01:43,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:01:43,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:01:43,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:01:43,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:01:43,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:01:43,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:01:43,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:01:43,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:01:43,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:01:43,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:01:43,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:01:43,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:01:43,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:01:43,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:01:43,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:01:43,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:01:43,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:01:43,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:01:43,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:01:43,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:01:43,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:01:43,921 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:01:43,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:01:43,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:01:43,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:01:43,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:01:43,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:01:43,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:01:43,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:01:43,924 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:01:43,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:01:43,924 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:01:43,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:01:43,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:01:43,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:01:43,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:01:43,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:01:43,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:01:43,926 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:01:43,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:01:43,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:01:43,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:01:43,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:01:43,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:01:43,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:01:43,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:01:43,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:01:43,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:01:43,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:01:43,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:01:43,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:01:43,928 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:01:43,928 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:01:43,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:01:43,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:01:43,929 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_7a5e71bc-9f69-41f9-a3f2-a9084f602122/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 [2021-11-13 18:01:44,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:01:44,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:01:44,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:01:44,234 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:01:44,234 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:01:44,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/pthread-atomic/lamport.i [2021-11-13 18:01:44,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/bin/uautomizer-YU5uOKAj3y/data/3eebdc6f4/f61f669980674953b78216e32b5bc924/FLAGf9b34569a [2021-11-13 18:01:44,861 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:01:44,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/sv-benchmarks/c/pthread-atomic/lamport.i [2021-11-13 18:01:44,880 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/bin/uautomizer-YU5uOKAj3y/data/3eebdc6f4/f61f669980674953b78216e32b5bc924/FLAGf9b34569a [2021-11-13 18:01:45,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/bin/uautomizer-YU5uOKAj3y/data/3eebdc6f4/f61f669980674953b78216e32b5bc924 [2021-11-13 18:01:45,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:01:45,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:01:45,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:01:45,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:01:45,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:01:45,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:01:45" (1/1) ... [2021-11-13 18:01:45,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13fbab2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:45, skipping insertion in model container [2021-11-13 18:01:45,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:01:45" (1/1) ... [2021-11-13 18:01:45,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:01:45,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:01:45,473 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-13 18:01:45,687 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_7a5e71bc-9f69-41f9-a3f2-a9084f602122/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2021-11-13 18:01:45,698 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_7a5e71bc-9f69-41f9-a3f2-a9084f602122/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2021-11-13 18:01:45,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:01:45,718 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:01:45,745 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-11-13 18:01:45,782 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_7a5e71bc-9f69-41f9-a3f2-a9084f602122/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2021-11-13 18:01:45,803 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_7a5e71bc-9f69-41f9-a3f2-a9084f602122/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2021-11-13 18:01:45,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:01:45,860 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:01:45,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:45 WrapperNode [2021-11-13 18:01:45,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:01:45,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:01:45,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:01:45,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:01:45,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:45" (1/1) ... [2021-11-13 18:01:45,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:45" (1/1) ... [2021-11-13 18:01:45,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:01:45,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:01:45,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:01:45,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:01:45,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:45" (1/1) ... [2021-11-13 18:01:45,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:45" (1/1) ... [2021-11-13 18:01:45,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:45" (1/1) ... [2021-11-13 18:01:45,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:45" (1/1) ... [2021-11-13 18:01:45,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:45" (1/1) ... [2021-11-13 18:01:45,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:45" (1/1) ... [2021-11-13 18:01:45,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:45" (1/1) ... [2021-11-13 18:01:45,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:01:46,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:01:46,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:01:46,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:01:46,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:45" (1/1) ... [2021-11-13 18:01:46,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:01:46,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:01:46,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:01:46,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:01:46,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:01:46,097 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-11-13 18:01:46,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-11-13 18:01:46,099 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-11-13 18:01:46,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-11-13 18:01:46,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:01:46,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 18:01:46,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:01:46,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:01:46,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:01:46,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 18:01:46,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:01:46,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:01:46,102 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 18:01:46,513 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:01:46,514 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-13 18:01:46,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:01:46 BoogieIcfgContainer [2021-11-13 18:01:46,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:01:46,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:01:46,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:01:46,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:01:46,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:01:45" (1/3) ... [2021-11-13 18:01:46,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621b213d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:01:46, skipping insertion in model container [2021-11-13 18:01:46,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:01:45" (2/3) ... [2021-11-13 18:01:46,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621b213d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:01:46, skipping insertion in model container [2021-11-13 18:01:46,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:01:46" (3/3) ... [2021-11-13 18:01:46,526 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2021-11-13 18:01:46,531 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 18:01:46,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:01:46,532 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 18:01:46,532 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 18:01:46,575 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,575 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,575 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,576 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,576 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,576 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,576 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,577 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,577 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,578 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,578 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,578 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,579 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,579 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,579 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,579 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,579 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,580 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,580 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,580 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,580 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,581 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,581 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,581 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,581 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,582 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,582 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,582 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,582 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,583 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,583 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,583 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,583 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,584 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,584 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,584 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,584 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,585 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,585 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,585 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,585 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,585 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,586 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,586 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,586 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,586 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,587 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,587 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,587 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,587 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,588 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,588 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,588 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,588 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,589 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,589 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,589 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,590 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,590 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,590 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,590 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,590 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,591 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,591 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,592 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,592 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,592 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,592 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,593 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,593 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,593 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,593 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,594 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,594 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,594 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,594 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,595 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,595 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,595 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,595 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,595 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,596 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,596 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,596 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,596 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,597 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,597 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,597 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,597 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,598 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,598 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,598 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,598 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,598 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,599 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,599 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,599 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,599 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,600 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,600 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,600 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,600 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,600 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,601 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,601 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,601 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,601 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,601 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,605 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,605 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,605 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,605 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,606 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,606 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,606 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,610 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,610 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,610 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,610 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,611 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,611 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,611 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:01:46,614 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-13 18:01:46,666 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:01:46,674 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 18:01:46,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-13 18:01:46,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 133 transitions, 282 flow [2021-11-13 18:01:46,746 INFO L129 PetriNetUnfolder]: 24/131 cut-off events. [2021-11-13 18:01:46,746 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-13 18:01:46,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 131 events. 24/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 255 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2021-11-13 18:01:46,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 133 transitions, 282 flow [2021-11-13 18:01:46,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 121 transitions, 251 flow [2021-11-13 18:01:46,775 INFO L129 PetriNetUnfolder]: 2/39 cut-off events. [2021-11-13 18:01:46,775 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:01:46,776 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:01:46,776 INFO L254 CegarLoopForPetriNet]: 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] [2021-11-13 18:01:46,777 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 18:01:46,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:46,788 INFO L85 PathProgramCache]: Analyzing trace with hash 513087575, now seen corresponding path program 1 times [2021-11-13 18:01:46,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:46,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075656421] [2021-11-13 18:01:46,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:46,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:46,992 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 18:01:46,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:46,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075656421] [2021-11-13 18:01:46,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075656421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:01:46,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:01:46,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:01:46,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170258770] [2021-11-13 18:01:46,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:01:47,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:01:47,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:47,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:01:47,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:01:47,036 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 133 [2021-11-13 18:01:47,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 121 transitions, 251 flow. Second operand has 2 states, 2 states have (on average 118.0) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:01:47,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 133 [2021-11-13 18:01:47,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:01:47,098 INFO L129 PetriNetUnfolder]: 12/109 cut-off events. [2021-11-13 18:01:47,099 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2021-11-13 18:01:47,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 109 events. 12/109 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 199 event pairs, 0 based on Foata normal form. 20/115 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2021-11-13 18:01:47,102 INFO L132 encePairwiseOnDemand]: 121/133 looper letters, 3 selfloop transitions, 0 changer transitions 0/109 dead transitions. [2021-11-13 18:01:47,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 109 transitions, 233 flow [2021-11-13 18:01:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:01:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-13 18:01:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 249 transitions. [2021-11-13 18:01:47,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9360902255639098 [2021-11-13 18:01:47,118 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 249 transitions. [2021-11-13 18:01:47,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 249 transitions. [2021-11-13 18:01:47,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:01:47,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 249 transitions. [2021-11-13 18:01:47,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,132 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,135 INFO L186 Difference]: Start difference. First operand has 104 places, 121 transitions, 251 flow. Second operand 2 states and 249 transitions. [2021-11-13 18:01:47,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 109 transitions, 233 flow [2021-11-13 18:01:47,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-13 18:01:47,144 INFO L242 Difference]: Finished difference. Result has 102 places, 109 transitions, 222 flow [2021-11-13 18:01:47,146 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=222, PETRI_PLACES=102, PETRI_TRANSITIONS=109} [2021-11-13 18:01:47,150 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, -2 predicate places. [2021-11-13 18:01:47,150 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 109 transitions, 222 flow [2021-11-13 18:01:47,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 118.0) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,151 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:01:47,151 INFO L254 CegarLoopForPetriNet]: 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] [2021-11-13 18:01:47,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:01:47,152 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 18:01:47,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:47,153 INFO L85 PathProgramCache]: Analyzing trace with hash 659391114, now seen corresponding path program 1 times [2021-11-13 18:01:47,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:47,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492608681] [2021-11-13 18:01:47,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:47,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:47,232 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 18:01:47,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:47,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492608681] [2021-11-13 18:01:47,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492608681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:01:47,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:01:47,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:01:47,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514743842] [2021-11-13 18:01:47,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:01:47,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:01:47,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:01:47,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:01:47,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2021-11-13 18:01:47,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 109 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:01:47,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2021-11-13 18:01:47,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:01:47,341 INFO L129 PetriNetUnfolder]: 31/215 cut-off events. [2021-11-13 18:01:47,341 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-11-13 18:01:47,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 215 events. 31/215 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 737 event pairs, 4 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 267. Up to 24 conditions per place. [2021-11-13 18:01:47,345 INFO L132 encePairwiseOnDemand]: 128/133 looper letters, 11 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2021-11-13 18:01:47,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 113 transitions, 259 flow [2021-11-13 18:01:47,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:01:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:01:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2021-11-13 18:01:47,350 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8671679197994987 [2021-11-13 18:01:47,350 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2021-11-13 18:01:47,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2021-11-13 18:01:47,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:01:47,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2021-11-13 18:01:47,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,357 INFO L186 Difference]: Start difference. First operand has 102 places, 109 transitions, 222 flow. Second operand 3 states and 346 transitions. [2021-11-13 18:01:47,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 113 transitions, 259 flow [2021-11-13 18:01:47,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 113 transitions, 259 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-13 18:01:47,361 INFO L242 Difference]: Finished difference. Result has 106 places, 110 transitions, 242 flow [2021-11-13 18:01:47,362 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=106, PETRI_TRANSITIONS=110} [2021-11-13 18:01:47,363 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 2 predicate places. [2021-11-13 18:01:47,363 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 110 transitions, 242 flow [2021-11-13 18:01:47,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,364 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:01:47,364 INFO L254 CegarLoopForPetriNet]: 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] [2021-11-13 18:01:47,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:01:47,364 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 18:01:47,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash 685275118, now seen corresponding path program 1 times [2021-11-13 18:01:47,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:47,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127181777] [2021-11-13 18:01:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:47,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:47,448 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 18:01:47,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:47,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127181777] [2021-11-13 18:01:47,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127181777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:01:47,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:01:47,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:01:47,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041226451] [2021-11-13 18:01:47,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:01:47,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:01:47,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:47,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:01:47,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:01:47,453 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2021-11-13 18:01:47,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 110 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:01:47,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2021-11-13 18:01:47,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:01:47,550 INFO L129 PetriNetUnfolder]: 25/196 cut-off events. [2021-11-13 18:01:47,558 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-11-13 18:01:47,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 196 events. 25/196 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 620 event pairs, 5 based on Foata normal form. 7/181 useless extension candidates. Maximal degree in co-relation 260. Up to 22 conditions per place. [2021-11-13 18:01:47,563 INFO L132 encePairwiseOnDemand]: 129/133 looper letters, 9 selfloop transitions, 2 changer transitions 1/111 dead transitions. [2021-11-13 18:01:47,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 111 transitions, 269 flow [2021-11-13 18:01:47,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:01:47,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:01:47,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2021-11-13 18:01:47,568 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8621553884711779 [2021-11-13 18:01:47,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2021-11-13 18:01:47,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2021-11-13 18:01:47,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:01:47,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2021-11-13 18:01:47,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,572 INFO L186 Difference]: Start difference. First operand has 106 places, 110 transitions, 242 flow. Second operand 3 states and 344 transitions. [2021-11-13 18:01:47,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 111 transitions, 269 flow [2021-11-13 18:01:47,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 111 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-13 18:01:47,576 INFO L242 Difference]: Finished difference. Result has 107 places, 110 transitions, 246 flow [2021-11-13 18:01:47,577 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=107, PETRI_TRANSITIONS=110} [2021-11-13 18:01:47,578 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 3 predicate places. [2021-11-13 18:01:47,578 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 110 transitions, 246 flow [2021-11-13 18:01:47,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,579 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:01:47,579 INFO L254 CegarLoopForPetriNet]: 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] [2021-11-13 18:01:47,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:01:47,579 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 18:01:47,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:47,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1799529779, now seen corresponding path program 1 times [2021-11-13 18:01:47,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:47,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566110144] [2021-11-13 18:01:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:47,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:47,726 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 18:01:47,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:47,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566110144] [2021-11-13 18:01:47,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566110144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:01:47,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:01:47,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:01:47,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311562671] [2021-11-13 18:01:47,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:01:47,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:01:47,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:47,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:01:47,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:01:47,734 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 133 [2021-11-13 18:01:47,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:47,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:01:47,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 133 [2021-11-13 18:01:47,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:01:48,130 INFO L129 PetriNetUnfolder]: 430/1239 cut-off events. [2021-11-13 18:01:48,131 INFO L130 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2021-11-13 18:01:48,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1999 conditions, 1239 events. 430/1239 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8086 event pairs, 60 based on Foata normal form. 0/1078 useless extension candidates. Maximal degree in co-relation 1993. Up to 300 conditions per place. [2021-11-13 18:01:48,144 INFO L132 encePairwiseOnDemand]: 119/133 looper letters, 47 selfloop transitions, 5 changer transitions 26/160 dead transitions. [2021-11-13 18:01:48,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 160 transitions, 505 flow [2021-11-13 18:01:48,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:01:48,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-13 18:01:48,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2021-11-13 18:01:48,148 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8210526315789474 [2021-11-13 18:01:48,149 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2021-11-13 18:01:48,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2021-11-13 18:01:48,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:01:48,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2021-11-13 18:01:48,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:48,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:48,157 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:48,157 INFO L186 Difference]: Start difference. First operand has 107 places, 110 transitions, 246 flow. Second operand 5 states and 546 transitions. [2021-11-13 18:01:48,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 160 transitions, 505 flow [2021-11-13 18:01:48,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 160 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-13 18:01:48,165 INFO L242 Difference]: Finished difference. Result has 114 places, 115 transitions, 320 flow [2021-11-13 18:01:48,167 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=114, PETRI_TRANSITIONS=115} [2021-11-13 18:01:48,172 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 10 predicate places. [2021-11-13 18:01:48,174 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 115 transitions, 320 flow [2021-11-13 18:01:48,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:48,174 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:01:48,175 INFO L254 CegarLoopForPetriNet]: 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] [2021-11-13 18:01:48,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:01:48,175 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 18:01:48,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:48,177 INFO L85 PathProgramCache]: Analyzing trace with hash -928539297, now seen corresponding path program 2 times [2021-11-13 18:01:48,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:48,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174994596] [2021-11-13 18:01:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:48,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:48,249 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 18:01:48,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:48,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174994596] [2021-11-13 18:01:48,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174994596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:01:48,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:01:48,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:01:48,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922474744] [2021-11-13 18:01:48,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:01:48,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:01:48,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:48,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:01:48,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:01:48,253 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2021-11-13 18:01:48,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 115 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:48,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:01:48,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2021-11-13 18:01:48,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:01:48,513 INFO L129 PetriNetUnfolder]: 324/1536 cut-off events. [2021-11-13 18:01:48,513 INFO L130 PetriNetUnfolder]: For 230/245 co-relation queries the response was YES. [2021-11-13 18:01:48,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2426 conditions, 1536 events. 324/1536 cut-off events. For 230/245 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 11594 event pairs, 33 based on Foata normal form. 1/1357 useless extension candidates. Maximal degree in co-relation 2417. Up to 187 conditions per place. [2021-11-13 18:01:48,530 INFO L132 encePairwiseOnDemand]: 129/133 looper letters, 21 selfloop transitions, 6 changer transitions 0/132 dead transitions. [2021-11-13 18:01:48,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 132 transitions, 410 flow [2021-11-13 18:01:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:01:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-13 18:01:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 578 transitions. [2021-11-13 18:01:48,533 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.869172932330827 [2021-11-13 18:01:48,533 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 578 transitions. [2021-11-13 18:01:48,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 578 transitions. [2021-11-13 18:01:48,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:01:48,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 578 transitions. [2021-11-13 18:01:48,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:48,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:48,539 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:48,539 INFO L186 Difference]: Start difference. First operand has 114 places, 115 transitions, 320 flow. Second operand 5 states and 578 transitions. [2021-11-13 18:01:48,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 132 transitions, 410 flow [2021-11-13 18:01:48,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 132 transitions, 394 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-11-13 18:01:48,550 INFO L242 Difference]: Finished difference. Result has 120 places, 121 transitions, 354 flow [2021-11-13 18:01:48,550 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=120, PETRI_TRANSITIONS=121} [2021-11-13 18:01:48,553 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 16 predicate places. [2021-11-13 18:01:48,553 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 121 transitions, 354 flow [2021-11-13 18:01:48,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:48,554 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:01:48,555 INFO L254 CegarLoopForPetriNet]: 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] [2021-11-13 18:01:48,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:01:48,555 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 18:01:48,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:48,558 INFO L85 PathProgramCache]: Analyzing trace with hash -907127399, now seen corresponding path program 3 times [2021-11-13 18:01:48,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:48,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895206126] [2021-11-13 18:01:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:48,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:48,643 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 18:01:48,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:48,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895206126] [2021-11-13 18:01:48,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895206126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:01:48,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:01:48,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:01:48,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962971446] [2021-11-13 18:01:48,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:01:48,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:01:48,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:48,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:01:48,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:01:48,653 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 133 [2021-11-13 18:01:48,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 121 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:48,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:01:48,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 133 [2021-11-13 18:01:48,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:01:48,837 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([373] L777-->L780: Formula: (= v_~x~0_1 2) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0][55], [Black: 130#(= ~X~0 1), 104#L710true, 6#L846-4true, 133#true, Black: 138#(and (= thr2Thread1of1ForFork1_~y2~0 1) (= ~y~0 1)), 119#true, Black: 135#(= ~y~0 1), 147#(= 2 ~x~0), 156#true, thr2Thread1of1ForFork1InUse, Black: 145#true, Black: 148#(= 2 thr1Thread1of1ForFork0_~x1~0), 11#L780true, Black: 150#(and (= 2 ~x~0) (= 2 thr1Thread1of1ForFork0_~x1~0)), Black: 122#true]) [2021-11-13 18:01:48,837 INFO L384 tUnfolder$Statistics]: this new event has 55 ancestors and is cut-off event [2021-11-13 18:01:48,837 INFO L387 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2021-11-13 18:01:48,837 INFO L387 tUnfolder$Statistics]: existing Event has 47 ancestors and is cut-off event [2021-11-13 18:01:48,838 INFO L387 tUnfolder$Statistics]: existing Event has 47 ancestors and is cut-off event [2021-11-13 18:01:49,340 INFO L129 PetriNetUnfolder]: 1188/3819 cut-off events. [2021-11-13 18:01:49,341 INFO L130 PetriNetUnfolder]: For 1424/1482 co-relation queries the response was YES. [2021-11-13 18:01:49,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7576 conditions, 3819 events. 1188/3819 cut-off events. For 1424/1482 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 32603 event pairs, 155 based on Foata normal form. 27/3490 useless extension candidates. Maximal degree in co-relation 7564. Up to 885 conditions per place. [2021-11-13 18:01:49,384 INFO L132 encePairwiseOnDemand]: 119/133 looper letters, 63 selfloop transitions, 16 changer transitions 3/170 dead transitions. [2021-11-13 18:01:49,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 170 transitions, 657 flow [2021-11-13 18:01:49,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:01:49,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-13 18:01:49,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2021-11-13 18:01:49,387 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8195488721804511 [2021-11-13 18:01:49,387 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2021-11-13 18:01:49,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2021-11-13 18:01:49,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:01:49,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2021-11-13 18:01:49,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:49,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:49,393 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:49,393 INFO L186 Difference]: Start difference. First operand has 120 places, 121 transitions, 354 flow. Second operand 5 states and 545 transitions. [2021-11-13 18:01:49,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 170 transitions, 657 flow [2021-11-13 18:01:49,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 170 transitions, 657 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-13 18:01:49,404 INFO L242 Difference]: Finished difference. Result has 128 places, 134 transitions, 492 flow [2021-11-13 18:01:49,405 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=492, PETRI_PLACES=128, PETRI_TRANSITIONS=134} [2021-11-13 18:01:49,407 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 24 predicate places. [2021-11-13 18:01:49,408 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 134 transitions, 492 flow [2021-11-13 18:01:49,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:49,408 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:01:49,408 INFO L254 CegarLoopForPetriNet]: 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] [2021-11-13 18:01:49,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:01:49,409 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 18:01:49,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:49,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2025051371, now seen corresponding path program 4 times [2021-11-13 18:01:49,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:49,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593687795] [2021-11-13 18:01:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:49,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:49,479 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 18:01:49,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:49,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593687795] [2021-11-13 18:01:49,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593687795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:01:49,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:01:49,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:01:49,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936359435] [2021-11-13 18:01:49,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:01:49,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:01:49,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:49,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:01:49,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:01:49,491 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2021-11-13 18:01:49,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 134 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:49,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:01:49,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2021-11-13 18:01:49,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:01:50,092 INFO L129 PetriNetUnfolder]: 714/3354 cut-off events. [2021-11-13 18:01:50,092 INFO L130 PetriNetUnfolder]: For 1974/2058 co-relation queries the response was YES. [2021-11-13 18:01:50,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6730 conditions, 3354 events. 714/3354 cut-off events. For 1974/2058 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 30538 event pairs, 69 based on Foata normal form. 35/3246 useless extension candidates. Maximal degree in co-relation 6714. Up to 469 conditions per place. [2021-11-13 18:01:50,136 INFO L132 encePairwiseOnDemand]: 129/133 looper letters, 28 selfloop transitions, 11 changer transitions 0/157 dead transitions. [2021-11-13 18:01:50,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 157 transitions, 673 flow [2021-11-13 18:01:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:01:50,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-13 18:01:50,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 580 transitions. [2021-11-13 18:01:50,140 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8721804511278195 [2021-11-13 18:01:50,140 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 580 transitions. [2021-11-13 18:01:50,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 580 transitions. [2021-11-13 18:01:50,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:01:50,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 580 transitions. [2021-11-13 18:01:50,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:50,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:50,147 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:50,148 INFO L186 Difference]: Start difference. First operand has 128 places, 134 transitions, 492 flow. Second operand 5 states and 580 transitions. [2021-11-13 18:01:50,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 157 transitions, 673 flow [2021-11-13 18:01:50,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 157 transitions, 673 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-13 18:01:50,164 INFO L242 Difference]: Finished difference. Result has 136 places, 142 transitions, 586 flow [2021-11-13 18:01:50,164 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=136, PETRI_TRANSITIONS=142} [2021-11-13 18:01:50,165 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 32 predicate places. [2021-11-13 18:01:50,165 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 142 transitions, 586 flow [2021-11-13 18:01:50,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:50,166 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:01:50,166 INFO L254 CegarLoopForPetriNet]: 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] [2021-11-13 18:01:50,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:01:50,166 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 18:01:50,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:50,167 INFO L85 PathProgramCache]: Analyzing trace with hash 547816781, now seen corresponding path program 1 times [2021-11-13 18:01:50,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:50,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966926003] [2021-11-13 18:01:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:50,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:50,235 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 18:01:50,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:50,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966926003] [2021-11-13 18:01:50,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966926003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:01:50,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:01:50,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:01:50,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038836511] [2021-11-13 18:01:50,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:01:50,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:01:50,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:50,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:01:50,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:01:50,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 133 [2021-11-13 18:01:50,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 142 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:50,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:01:50,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 133 [2021-11-13 18:01:50,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:01:50,783 INFO L129 PetriNetUnfolder]: 672/3164 cut-off events. [2021-11-13 18:01:50,783 INFO L130 PetriNetUnfolder]: For 1587/1642 co-relation queries the response was YES. [2021-11-13 18:01:50,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6489 conditions, 3164 events. 672/3164 cut-off events. For 1587/1642 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 29350 event pairs, 75 based on Foata normal form. 15/3057 useless extension candidates. Maximal degree in co-relation 6469. Up to 385 conditions per place. [2021-11-13 18:01:50,816 INFO L132 encePairwiseOnDemand]: 126/133 looper letters, 15 selfloop transitions, 10 changer transitions 5/155 dead transitions. [2021-11-13 18:01:50,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 155 transitions, 659 flow [2021-11-13 18:01:50,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:01:50,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-13 18:01:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 569 transitions. [2021-11-13 18:01:50,819 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8556390977443609 [2021-11-13 18:01:50,819 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 569 transitions. [2021-11-13 18:01:50,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 569 transitions. [2021-11-13 18:01:50,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:01:50,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 569 transitions. [2021-11-13 18:01:50,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:50,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:50,824 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:50,825 INFO L186 Difference]: Start difference. First operand has 136 places, 142 transitions, 586 flow. Second operand 5 states and 569 transitions. [2021-11-13 18:01:50,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 155 transitions, 659 flow [2021-11-13 18:01:50,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 155 transitions, 655 flow, removed 2 selfloop flow, removed 0 redundant places. [2021-11-13 18:01:50,838 INFO L242 Difference]: Finished difference. Result has 143 places, 144 transitions, 615 flow [2021-11-13 18:01:50,838 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=615, PETRI_PLACES=143, PETRI_TRANSITIONS=144} [2021-11-13 18:01:50,840 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 39 predicate places. [2021-11-13 18:01:50,841 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 144 transitions, 615 flow [2021-11-13 18:01:50,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:50,841 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:01:50,841 INFO L254 CegarLoopForPetriNet]: 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] [2021-11-13 18:01:50,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:01:50,842 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2021-11-13 18:01:50,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:01:50,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1481179120, now seen corresponding path program 1 times [2021-11-13 18:01:50,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:01:50,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871216672] [2021-11-13 18:01:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:01:50,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:01:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:01:50,896 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 18:01:50,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:01:50,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871216672] [2021-11-13 18:01:50,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871216672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:01:50,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:01:50,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:01:50,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340337341] [2021-11-13 18:01:50,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:01:50,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:01:50,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:01:50,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:01:50,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:01:50,900 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 133 [2021-11-13 18:01:50,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 144 transitions, 615 flow. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:50,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:01:50,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 133 [2021-11-13 18:01:50,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:01:51,404 INFO L129 PetriNetUnfolder]: 633/2953 cut-off events. [2021-11-13 18:01:51,404 INFO L130 PetriNetUnfolder]: For 1382/1418 co-relation queries the response was YES. [2021-11-13 18:01:51,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6389 conditions, 2953 events. 633/2953 cut-off events. For 1382/1418 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 26314 event pairs, 63 based on Foata normal form. 8/2860 useless extension candidates. Maximal degree in co-relation 6365. Up to 364 conditions per place. [2021-11-13 18:01:51,435 INFO L132 encePairwiseOnDemand]: 126/133 looper letters, 0 selfloop transitions, 0 changer transitions 154/154 dead transitions. [2021-11-13 18:01:51,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 154 transitions, 674 flow [2021-11-13 18:01:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:01:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-13 18:01:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 570 transitions. [2021-11-13 18:01:51,438 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2021-11-13 18:01:51,438 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 570 transitions. [2021-11-13 18:01:51,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 570 transitions. [2021-11-13 18:01:51,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:01:51,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 570 transitions. [2021-11-13 18:01:51,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:51,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:51,442 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:51,442 INFO L186 Difference]: Start difference. First operand has 143 places, 144 transitions, 615 flow. Second operand 5 states and 570 transitions. [2021-11-13 18:01:51,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 154 transitions, 674 flow [2021-11-13 18:01:51,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 154 transitions, 660 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-11-13 18:01:51,458 INFO L242 Difference]: Finished difference. Result has 142 places, 0 transitions, 0 flow [2021-11-13 18:01:51,459 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=142, PETRI_TRANSITIONS=0} [2021-11-13 18:01:51,460 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 38 predicate places. [2021-11-13 18:01:51,460 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 0 transitions, 0 flow [2021-11-13 18:01:51,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:01:51,463 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-13 18:01:51,463 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-13 18:01:51,463 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-11-13 18:01:51,464 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-11-13 18:01:51,464 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-13 18:01:51,464 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-13 18:01:51,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:01:51,469 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2021-11-13 18:01:51,473 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 18:01:51,473 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:01:51,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:01:51 BasicIcfg [2021-11-13 18:01:51,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 18:01:51,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:01:51,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:01:51,477 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:01:51,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:01:46" (3/4) ... [2021-11-13 18:01:51,480 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 18:01:51,486 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2021-11-13 18:01:51,486 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-11-13 18:01:51,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-13 18:01:51,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-13 18:01:51,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-13 18:01:51,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 18:01:51,519 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 18:01:51,519 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:01:51,520 INFO L158 Benchmark]: Toolchain (without parser) took 6340.66ms. Allocated memory was 98.6MB in the beginning and 379.6MB in the end (delta: 281.0MB). Free memory was 65.2MB in the beginning and 231.0MB in the end (delta: -165.8MB). Peak memory consumption was 115.1MB. Max. memory is 16.1GB. [2021-11-13 18:01:51,520 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 98.6MB. Free memory was 52.3MB in the beginning and 52.2MB in the end (delta: 79.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:01:51,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 677.25ms. Allocated memory is still 98.6MB. Free memory was 65.0MB in the beginning and 63.9MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:01:51,521 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.26ms. Allocated memory is still 98.6MB. Free memory was 63.9MB in the beginning and 62.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:01:51,521 INFO L158 Benchmark]: Boogie Preprocessor took 70.68ms. Allocated memory is still 98.6MB. Free memory was 62.2MB in the beginning and 60.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:01:51,522 INFO L158 Benchmark]: RCFGBuilder took 513.19ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 60.4MB in the beginning and 95.3MB in the end (delta: -34.9MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2021-11-13 18:01:51,522 INFO L158 Benchmark]: TraceAbstraction took 4958.16ms. Allocated memory was 119.5MB in the beginning and 379.6MB in the end (delta: 260.0MB). Free memory was 94.8MB in the beginning and 234.2MB in the end (delta: -139.4MB). Peak memory consumption was 155.2MB. Max. memory is 16.1GB. [2021-11-13 18:01:51,523 INFO L158 Benchmark]: Witness Printer took 42.15ms. Allocated memory is still 379.6MB. Free memory was 234.2MB in the beginning and 231.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 18:01:51,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 98.6MB. Free memory was 52.3MB in the beginning and 52.2MB in the end (delta: 79.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 677.25ms. Allocated memory is still 98.6MB. Free memory was 65.0MB in the beginning and 63.9MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.26ms. Allocated memory is still 98.6MB. Free memory was 63.9MB in the beginning and 62.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.68ms. Allocated memory is still 98.6MB. Free memory was 62.2MB in the beginning and 60.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 513.19ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 60.4MB in the beginning and 95.3MB in the end (delta: -34.9MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * TraceAbstraction took 4958.16ms. Allocated memory was 119.5MB in the beginning and 379.6MB in the end (delta: 260.0MB). Free memory was 94.8MB in the beginning and 234.2MB in the end (delta: -139.4MB). Peak memory consumption was 155.2MB. Max. memory is 16.1GB. * Witness Printer took 42.15ms. Allocated memory is still 379.6MB. Free memory was 234.2MB in the beginning and 231.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 834]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 764]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 176 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 423.76ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 274.17ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 105 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 351 IncrementalHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 138 mSDtfsCounter, 351 mSolverCounterSat, 13.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=615occurred in iteration=8, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 425 ConstructedInterpolants, 0 QuantifiedInterpolants, 557 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-13 18:01:51,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5e71bc-9f69-41f9-a3f2-a9084f602122/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: TRUE