./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:11:15,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:11:15,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:11:15,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:11:15,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:11:15,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:11:15,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:11:15,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:11:15,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:11:15,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:11:15,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:11:15,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:11:15,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:11:15,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:11:15,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:11:15,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:11:15,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:11:15,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:11:15,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:11:15,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:11:15,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:11:15,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:11:15,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:11:15,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:11:15,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:11:15,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:11:15,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:11:15,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:11:15,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:11:15,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:11:15,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:11:15,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:11:15,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:11:15,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:11:15,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:11:15,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:11:15,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:11:15,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:11:15,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:11:15,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:11:15,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:11:15,549 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:11:15,585 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:11:15,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:11:15,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:11:15,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:11:15,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:11:15,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:11:15,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:11:15,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:11:15,588 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:11:15,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:11:15,590 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:11:15,590 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:11:15,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:11:15,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:11:15,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:11:15,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:11:15,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:11:15,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:11:15,592 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:11:15,592 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:11:15,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:11:15,592 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:11:15,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:11:15,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:11:15,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:11:15,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:11:15,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:11:15,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:11:15,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:11:15,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:11:15,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:11:15,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:11:15,596 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:11:15,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:11:15,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:11:15,597 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_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2022-11-20 11:11:15,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:11:15,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:11:15,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:11:15,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:11:15,931 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:11:15,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2022-11-20 11:11:19,137 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:11:19,373 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:11:19,374 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2022-11-20 11:11:19,392 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/data/492e20050/b69906e16e5047f9be73fc50cb6d80d1/FLAG57acff068 [2022-11-20 11:11:19,412 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/data/492e20050/b69906e16e5047f9be73fc50cb6d80d1 [2022-11-20 11:11:19,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:11:19,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:11:19,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:11:19,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:11:19,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:11:19,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:19" (1/1) ... [2022-11-20 11:11:19,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38ed6437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:19, skipping insertion in model container [2022-11-20 11:11:19,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:19" (1/1) ... [2022-11-20 11:11:19,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:11:19,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:11:19,882 WARN L237 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_0f1e1293-cefe-4e42-a147-3b437daafa38/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-11-20 11:11:19,887 WARN L237 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_0f1e1293-cefe-4e42-a147-3b437daafa38/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-11-20 11:11:19,895 WARN L237 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_0f1e1293-cefe-4e42-a147-3b437daafa38/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-11-20 11:11:19,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:11:19,927 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:11:19,983 WARN L237 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_0f1e1293-cefe-4e42-a147-3b437daafa38/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-11-20 11:11:19,987 WARN L237 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_0f1e1293-cefe-4e42-a147-3b437daafa38/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-11-20 11:11:19,992 WARN L237 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_0f1e1293-cefe-4e42-a147-3b437daafa38/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-11-20 11:11:19,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:11:20,035 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:11:20,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20 WrapperNode [2022-11-20 11:11:20,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:11:20,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:11:20,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:11:20,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:11:20,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20" (1/1) ... [2022-11-20 11:11:20,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20" (1/1) ... [2022-11-20 11:11:20,085 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2022-11-20 11:11:20,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:11:20,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:11:20,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:11:20,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:11:20,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20" (1/1) ... [2022-11-20 11:11:20,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20" (1/1) ... [2022-11-20 11:11:20,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20" (1/1) ... [2022-11-20 11:11:20,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20" (1/1) ... [2022-11-20 11:11:20,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20" (1/1) ... [2022-11-20 11:11:20,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20" (1/1) ... [2022-11-20 11:11:20,123 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20" (1/1) ... [2022-11-20 11:11:20,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20" (1/1) ... [2022-11-20 11:11:20,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:11:20,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:11:20,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:11:20,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:11:20,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20" (1/1) ... [2022-11-20 11:11:20,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:11:20,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:20,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:20,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:11:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:11:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 11:11:20,245 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 11:11:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 11:11:20,246 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 11:11:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:11:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:11:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:11:20,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:11:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:11:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:11:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:11:20,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:11:20,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:11:20,249 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:11:20,459 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:11:20,462 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:11:20,774 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:11:20,781 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:11:20,781 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:11:20,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:20 BoogieIcfgContainer [2022-11-20 11:11:20,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:11:20,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:11:20,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:11:20,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:11:20,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:11:19" (1/3) ... [2022-11-20 11:11:20,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa20d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:11:20, skipping insertion in model container [2022-11-20 11:11:20,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20" (2/3) ... [2022-11-20 11:11:20,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa20d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:11:20, skipping insertion in model container [2022-11-20 11:11:20,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:20" (3/3) ... [2022-11-20 11:11:20,801 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2022-11-20 11:11:20,811 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:11:20,821 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:11:20,823 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-20 11:11:20,823 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:11:20,944 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:11:21,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 163 transitions, 342 flow [2022-11-20 11:11:21,078 INFO L130 PetriNetUnfolder]: 11/161 cut-off events. [2022-11-20 11:11:21,078 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:11:21,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 161 events. 11/161 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 311 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2022-11-20 11:11:21,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 163 transitions, 342 flow [2022-11-20 11:11:21,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 151 transitions, 311 flow [2022-11-20 11:11:21,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:11:21,109 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@34316cc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:11:21,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-20 11:11:21,129 INFO L130 PetriNetUnfolder]: 2/79 cut-off events. [2022-11-20 11:11:21,129 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:11:21,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:21,131 INFO L209 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, 1] [2022-11-20 11:11:21,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 11:11:21,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:21,137 INFO L85 PathProgramCache]: Analyzing trace with hash 669597952, now seen corresponding path program 1 times [2022-11-20 11:11:21,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:21,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894823363] [2022-11-20 11:11:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:21,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:21,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:21,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894823363] [2022-11-20 11:11:21,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894823363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:21,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:21,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:11:21,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041980173] [2022-11-20 11:11:21,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:21,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:21,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:21,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:21,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:21,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 163 [2022-11-20 11:11:21,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 151 transitions, 311 flow. Second operand has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 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) [2022-11-20 11:11:21,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:21,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 163 [2022-11-20 11:11:21,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:21,942 INFO L130 PetriNetUnfolder]: 37/276 cut-off events. [2022-11-20 11:11:21,942 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-11-20 11:11:21,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 276 events. 37/276 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1159 event pairs, 14 based on Foata normal form. 51/297 useless extension candidates. Maximal degree in co-relation 349. Up to 48 conditions per place. [2022-11-20 11:11:21,947 INFO L137 encePairwiseOnDemand]: 151/163 looper letters, 27 selfloop transitions, 4 changer transitions 0/156 dead transitions. [2022-11-20 11:11:21,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 156 transitions, 392 flow [2022-11-20 11:11:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:11:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:11:21,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2022-11-20 11:11:21,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8932515337423312 [2022-11-20 11:11:21,977 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2022-11-20 11:11:21,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2022-11-20 11:11:21,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:21,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2022-11-20 11:11:21,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 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) [2022-11-20 11:11:22,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 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) [2022-11-20 11:11:22,002 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 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) [2022-11-20 11:11:22,005 INFO L175 Difference]: Start difference. First operand has 147 places, 151 transitions, 311 flow. Second operand 5 states and 728 transitions. [2022-11-20 11:11:22,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 156 transitions, 392 flow [2022-11-20 11:11:22,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 156 transitions, 384 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:11:22,019 INFO L231 Difference]: Finished difference. Result has 148 places, 146 transitions, 322 flow [2022-11-20 11:11:22,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=148, PETRI_TRANSITIONS=146} [2022-11-20 11:11:22,028 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 1 predicate places. [2022-11-20 11:11:22,028 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 146 transitions, 322 flow [2022-11-20 11:11:22,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 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) [2022-11-20 11:11:22,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:22,030 INFO L209 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:22,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:11:22,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 11:11:22,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:22,032 INFO L85 PathProgramCache]: Analyzing trace with hash -871008717, now seen corresponding path program 1 times [2022-11-20 11:11:22,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:22,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900895125] [2022-11-20 11:11:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:22,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:22,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:22,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:22,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900895125] [2022-11-20 11:11:22,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900895125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:22,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:22,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:11:22,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412864359] [2022-11-20 11:11:22,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:22,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:22,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:22,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:22,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:22,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 163 [2022-11-20 11:11:22,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 146 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 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) [2022-11-20 11:11:22,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:22,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 163 [2022-11-20 11:11:22,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:22,389 INFO L130 PetriNetUnfolder]: 31/298 cut-off events. [2022-11-20 11:11:22,389 INFO L131 PetriNetUnfolder]: For 20/21 co-relation queries the response was YES. [2022-11-20 11:11:22,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 298 events. 31/298 cut-off events. For 20/21 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1318 event pairs, 3 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 307. Up to 36 conditions per place. [2022-11-20 11:11:22,394 INFO L137 encePairwiseOnDemand]: 156/163 looper letters, 19 selfloop transitions, 4 changer transitions 0/155 dead transitions. [2022-11-20 11:11:22,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 155 transitions, 389 flow [2022-11-20 11:11:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:11:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:11:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 726 transitions. [2022-11-20 11:11:22,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8907975460122699 [2022-11-20 11:11:22,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 726 transitions. [2022-11-20 11:11:22,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 726 transitions. [2022-11-20 11:11:22,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:22,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 726 transitions. [2022-11-20 11:11:22,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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) [2022-11-20 11:11:22,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 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) [2022-11-20 11:11:22,404 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 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) [2022-11-20 11:11:22,404 INFO L175 Difference]: Start difference. First operand has 148 places, 146 transitions, 322 flow. Second operand 5 states and 726 transitions. [2022-11-20 11:11:22,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 155 transitions, 389 flow [2022-11-20 11:11:22,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 155 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:11:22,409 INFO L231 Difference]: Finished difference. Result has 154 places, 149 transitions, 352 flow [2022-11-20 11:11:22,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=352, PETRI_PLACES=154, PETRI_TRANSITIONS=149} [2022-11-20 11:11:22,410 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 7 predicate places. [2022-11-20 11:11:22,410 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 352 flow [2022-11-20 11:11:22,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 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) [2022-11-20 11:11:22,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:22,411 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:22,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:11:22,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 11:11:22,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:22,413 INFO L85 PathProgramCache]: Analyzing trace with hash 35346516, now seen corresponding path program 1 times [2022-11-20 11:11:22,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:22,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569659490] [2022-11-20 11:11:22,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:22,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:11:22,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:22,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569659490] [2022-11-20 11:11:22,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569659490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:22,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:22,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:11:22,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940213102] [2022-11-20 11:11:22,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:22,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:22,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:22,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:22,595 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 163 [2022-11-20 11:11:22,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 149 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2022-11-20 11:11:22,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:22,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 163 [2022-11-20 11:11:22,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:22,735 INFO L130 PetriNetUnfolder]: 38/305 cut-off events. [2022-11-20 11:11:22,736 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-20 11:11:22,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 305 events. 38/305 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1355 event pairs, 3 based on Foata normal form. 2/283 useless extension candidates. Maximal degree in co-relation 414. Up to 33 conditions per place. [2022-11-20 11:11:22,743 INFO L137 encePairwiseOnDemand]: 157/163 looper letters, 16 selfloop transitions, 8 changer transitions 0/152 dead transitions. [2022-11-20 11:11:22,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 152 transitions, 410 flow [2022-11-20 11:11:22,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:11:22,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:11:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 702 transitions. [2022-11-20 11:11:22,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8613496932515338 [2022-11-20 11:11:22,748 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 702 transitions. [2022-11-20 11:11:22,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 702 transitions. [2022-11-20 11:11:22,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:22,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 702 transitions. [2022-11-20 11:11:22,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 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) [2022-11-20 11:11:22,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 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) [2022-11-20 11:11:22,754 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 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) [2022-11-20 11:11:22,754 INFO L175 Difference]: Start difference. First operand has 154 places, 149 transitions, 352 flow. Second operand 5 states and 702 transitions. [2022-11-20 11:11:22,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 152 transitions, 410 flow [2022-11-20 11:11:22,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 152 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:11:22,761 INFO L231 Difference]: Finished difference. Result has 157 places, 149 transitions, 370 flow [2022-11-20 11:11:22,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=157, PETRI_TRANSITIONS=149} [2022-11-20 11:11:22,765 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 10 predicate places. [2022-11-20 11:11:22,765 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 149 transitions, 370 flow [2022-11-20 11:11:22,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2022-11-20 11:11:22,766 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:22,766 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:22,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:11:22,767 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 11:11:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:22,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1095742422, now seen corresponding path program 1 times [2022-11-20 11:11:22,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:22,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715587307] [2022-11-20 11:11:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:22,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:22,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:22,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715587307] [2022-11-20 11:11:22,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715587307] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:22,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580201351] [2022-11-20 11:11:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:22,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:22,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:22,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:23,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:11:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:23,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:11:23,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:23,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:23,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580201351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:23,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:11:23,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:11:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283796] [2022-11-20 11:11:23,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:23,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:11:23,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:23,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:11:23,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:23,245 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 163 [2022-11-20 11:11:23,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 149 transitions, 370 flow. Second operand has 6 states, 6 states have (on average 138.16666666666666) internal successors, (829), 6 states have internal predecessors, (829), 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) [2022-11-20 11:11:23,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:23,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 163 [2022-11-20 11:11:23,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:23,447 INFO L130 PetriNetUnfolder]: 42/377 cut-off events. [2022-11-20 11:11:23,448 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-20 11:11:23,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 377 events. 42/377 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1872 event pairs, 6 based on Foata normal form. 2/349 useless extension candidates. Maximal degree in co-relation 465. Up to 24 conditions per place. [2022-11-20 11:11:23,454 INFO L137 encePairwiseOnDemand]: 158/163 looper letters, 25 selfloop transitions, 6 changer transitions 0/159 dead transitions. [2022-11-20 11:11:23,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 159 transitions, 460 flow [2022-11-20 11:11:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:11:23,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:11:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 984 transitions. [2022-11-20 11:11:23,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8624014022787029 [2022-11-20 11:11:23,462 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 984 transitions. [2022-11-20 11:11:23,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 984 transitions. [2022-11-20 11:11:23,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:23,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 984 transitions. [2022-11-20 11:11:23,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.57142857142858) internal successors, (984), 7 states have internal predecessors, (984), 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) [2022-11-20 11:11:23,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 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) [2022-11-20 11:11:23,470 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 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) [2022-11-20 11:11:23,471 INFO L175 Difference]: Start difference. First operand has 157 places, 149 transitions, 370 flow. Second operand 7 states and 984 transitions. [2022-11-20 11:11:23,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 159 transitions, 460 flow [2022-11-20 11:11:23,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 159 transitions, 448 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:11:23,477 INFO L231 Difference]: Finished difference. Result has 159 places, 148 transitions, 366 flow [2022-11-20 11:11:23,478 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=159, PETRI_TRANSITIONS=148} [2022-11-20 11:11:23,479 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 12 predicate places. [2022-11-20 11:11:23,479 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 148 transitions, 366 flow [2022-11-20 11:11:23,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.16666666666666) internal successors, (829), 6 states have internal predecessors, (829), 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) [2022-11-20 11:11:23,482 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:23,482 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:23,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:23,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-20 11:11:23,703 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 11:11:23,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:23,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2079719430, now seen corresponding path program 1 times [2022-11-20 11:11:23,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:23,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349399709] [2022-11-20 11:11:23,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:23,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:11:23,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:23,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349399709] [2022-11-20 11:11:23,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349399709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:23,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:23,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:11:23,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753200380] [2022-11-20 11:11:23,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:23,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:23,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:23,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:23,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:23,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 163 [2022-11-20 11:11:23,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 148 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 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) [2022-11-20 11:11:23,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:23,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 163 [2022-11-20 11:11:23,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:23,958 INFO L130 PetriNetUnfolder]: 30/295 cut-off events. [2022-11-20 11:11:23,958 INFO L131 PetriNetUnfolder]: For 39/40 co-relation queries the response was YES. [2022-11-20 11:11:23,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 295 events. 30/295 cut-off events. For 39/40 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1292 event pairs, 8 based on Foata normal form. 2/275 useless extension candidates. Maximal degree in co-relation 331. Up to 21 conditions per place. [2022-11-20 11:11:23,962 INFO L137 encePairwiseOnDemand]: 157/163 looper letters, 12 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2022-11-20 11:11:23,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 151 transitions, 413 flow [2022-11-20 11:11:23,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:11:23,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:11:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 718 transitions. [2022-11-20 11:11:23,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8809815950920246 [2022-11-20 11:11:23,966 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 718 transitions. [2022-11-20 11:11:23,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 718 transitions. [2022-11-20 11:11:23,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:23,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 718 transitions. [2022-11-20 11:11:23,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 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) [2022-11-20 11:11:23,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 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) [2022-11-20 11:11:23,972 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 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) [2022-11-20 11:11:23,972 INFO L175 Difference]: Start difference. First operand has 159 places, 148 transitions, 366 flow. Second operand 5 states and 718 transitions. [2022-11-20 11:11:23,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 151 transitions, 413 flow [2022-11-20 11:11:23,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 151 transitions, 402 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 11:11:23,979 INFO L231 Difference]: Finished difference. Result has 158 places, 148 transitions, 375 flow [2022-11-20 11:11:23,979 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=375, PETRI_PLACES=158, PETRI_TRANSITIONS=148} [2022-11-20 11:11:23,981 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 11 predicate places. [2022-11-20 11:11:23,982 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 148 transitions, 375 flow [2022-11-20 11:11:23,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 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) [2022-11-20 11:11:23,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:23,982 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:23,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:11:23,983 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 11:11:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:23,983 INFO L85 PathProgramCache]: Analyzing trace with hash 46793364, now seen corresponding path program 1 times [2022-11-20 11:11:23,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:23,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052868436] [2022-11-20 11:11:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:24,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:24,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052868436] [2022-11-20 11:11:24,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052868436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:24,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802275106] [2022-11-20 11:11:24,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:24,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:24,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:24,156 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:24,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:11:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:24,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:11:24,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:24,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:24,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802275106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:24,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:11:24,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 11:11:24,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274464679] [2022-11-20 11:11:24,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:24,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:11:24,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:24,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:11:24,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:11:24,336 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 163 [2022-11-20 11:11:24,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 148 transitions, 375 flow. Second operand has 5 states, 5 states have (on average 142.8) internal successors, (714), 5 states have internal predecessors, (714), 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) [2022-11-20 11:11:24,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:24,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 163 [2022-11-20 11:11:24,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:24,422 INFO L130 PetriNetUnfolder]: 29/292 cut-off events. [2022-11-20 11:11:24,422 INFO L131 PetriNetUnfolder]: For 50/51 co-relation queries the response was YES. [2022-11-20 11:11:24,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 292 events. 29/292 cut-off events. For 50/51 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1218 event pairs, 9 based on Foata normal form. 2/272 useless extension candidates. Maximal degree in co-relation 340. Up to 24 conditions per place. [2022-11-20 11:11:24,425 INFO L137 encePairwiseOnDemand]: 159/163 looper letters, 0 selfloop transitions, 0 changer transitions 149/149 dead transitions. [2022-11-20 11:11:24,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 149 transitions, 413 flow [2022-11-20 11:11:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:11:24,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:11:24,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 575 transitions. [2022-11-20 11:11:24,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8819018404907976 [2022-11-20 11:11:24,428 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 575 transitions. [2022-11-20 11:11:24,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 575 transitions. [2022-11-20 11:11:24,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:24,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 575 transitions. [2022-11-20 11:11:24,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 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) [2022-11-20 11:11:24,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 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) [2022-11-20 11:11:24,432 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 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) [2022-11-20 11:11:24,433 INFO L175 Difference]: Start difference. First operand has 158 places, 148 transitions, 375 flow. Second operand 4 states and 575 transitions. [2022-11-20 11:11:24,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 149 transitions, 413 flow [2022-11-20 11:11:24,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 149 transitions, 401 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:11:24,436 INFO L231 Difference]: Finished difference. Result has 157 places, 0 transitions, 0 flow [2022-11-20 11:11:24,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=157, PETRI_TRANSITIONS=0} [2022-11-20 11:11:24,437 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 10 predicate places. [2022-11-20 11:11:24,438 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 0 transitions, 0 flow [2022-11-20 11:11:24,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.8) internal successors, (714), 5 states have internal predecessors, (714), 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) [2022-11-20 11:11:24,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-20 11:11:24,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2022-11-20 11:11:24,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-20 11:11:24,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-20 11:11:24,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-20 11:11:24,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-20 11:11:24,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-20 11:11:24,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-20 11:11:24,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-20 11:11:24,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2022-11-20 11:11:24,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:24,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:11:24,650 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 11:11:24,655 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:11:24,655 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:11:24,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:11:24 BasicIcfg [2022-11-20 11:11:24,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:11:24,661 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:11:24,661 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:11:24,661 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:11:24,662 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:20" (3/4) ... [2022-11-20 11:11:24,664 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:11:24,671 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-20 11:11:24,671 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-20 11:11:24,674 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-20 11:11:24,675 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:11:24,675 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:11:24,675 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:11:24,708 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:11:24,708 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:11:24,708 INFO L158 Benchmark]: Toolchain (without parser) took 5291.63ms. Allocated memory was 159.4MB in the beginning and 199.2MB in the end (delta: 39.8MB). Free memory was 114.9MB in the beginning and 59.6MB in the end (delta: 55.4MB). Peak memory consumption was 97.5MB. Max. memory is 16.1GB. [2022-11-20 11:11:24,709 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 59.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:11:24,709 INFO L158 Benchmark]: CACSL2BoogieTranslator took 613.50ms. Allocated memory is still 159.4MB. Free memory was 114.5MB in the beginning and 94.0MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 11:11:24,709 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.88ms. Allocated memory is still 159.4MB. Free memory was 94.0MB in the beginning and 91.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:11:24,710 INFO L158 Benchmark]: Boogie Preprocessor took 42.23ms. Allocated memory is still 159.4MB. Free memory was 91.9MB in the beginning and 89.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:11:24,710 INFO L158 Benchmark]: RCFGBuilder took 654.98ms. Allocated memory is still 159.4MB. Free memory was 89.8MB in the beginning and 115.9MB in the end (delta: -26.1MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-11-20 11:11:24,710 INFO L158 Benchmark]: TraceAbstraction took 3874.64ms. Allocated memory was 159.4MB in the beginning and 199.2MB in the end (delta: 39.8MB). Free memory was 115.1MB in the beginning and 62.7MB in the end (delta: 52.4MB). Peak memory consumption was 91.8MB. Max. memory is 16.1GB. [2022-11-20 11:11:24,711 INFO L158 Benchmark]: Witness Printer took 46.86ms. Allocated memory is still 199.2MB. Free memory was 62.7MB in the beginning and 59.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:11:24,713 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 59.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 613.50ms. Allocated memory is still 159.4MB. Free memory was 114.5MB in the beginning and 94.0MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.88ms. Allocated memory is still 159.4MB. Free memory was 94.0MB in the beginning and 91.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.23ms. Allocated memory is still 159.4MB. Free memory was 91.9MB in the beginning and 89.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 654.98ms. Allocated memory is still 159.4MB. Free memory was 89.8MB in the beginning and 115.9MB in the end (delta: -26.1MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3874.64ms. Allocated memory was 159.4MB in the beginning and 199.2MB in the end (delta: 39.8MB). Free memory was 115.1MB in the beginning and 62.7MB in the end (delta: 52.4MB). Peak memory consumption was 91.8MB. Max. memory is 16.1GB. * Witness Printer took 46.86ms. Allocated memory is still 199.2MB. Free memory was 62.7MB in the beginning and 59.6MB 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: - PositiveResult [Line: 725]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 725]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 236 locations, 10 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: 3.7s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 212 IncrementalHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 27 mSDtfsCounter, 212 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=375occurred in iteration=5, InterpolantAutomatonStates: 31, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 560 NumberOfCodeBlocks, 560 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 552 ConstructedInterpolants, 0 QuantifiedInterpolants, 752 SizeOfPredicates, 5 NumberOfNonLiveVariables, 418 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 30/46 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:11:24,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f1e1293-cefe-4e42-a147-3b437daafa38/bin/uautomizer-ug76WZFUDN/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