./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe003_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 --- 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-4e7fbc6 [2022-11-23 04:09:17,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 04:09:17,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 04:09:17,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 04:09:17,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 04:09:17,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 04:09:17,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 04:09:17,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 04:09:17,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 04:09:17,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 04:09:17,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 04:09:17,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 04:09:17,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 04:09:17,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 04:09:17,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 04:09:17,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 04:09:17,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 04:09:17,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 04:09:17,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 04:09:17,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 04:09:17,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 04:09:17,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 04:09:17,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 04:09:17,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 04:09:17,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 04:09:17,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 04:09:17,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 04:09:17,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 04:09:17,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 04:09:17,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 04:09:17,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 04:09:17,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 04:09:17,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 04:09:17,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 04:09:17,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 04:09:17,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 04:09:17,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 04:09:17,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 04:09:17,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 04:09:17,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 04:09:17,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 04:09:17,730 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 04:09:17,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 04:09:17,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 04:09:17,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 04:09:17,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 04:09:17,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 04:09:17,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 04:09:17,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 04:09:17,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 04:09:17,756 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 04:09:17,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 04:09:17,757 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 04:09:17,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 04:09:17,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 04:09:17,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 04:09:17,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 04:09:17,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 04:09:17,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 04:09:17,758 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 04:09:17,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 04:09:17,759 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 04:09:17,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 04:09:17,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 04:09:17,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 04:09:17,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 04:09:17,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:09:17,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 04:09:17,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 04:09:17,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 04:09:17,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 04:09:17,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 04:09:17,762 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 04:09:17,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 04:09:17,762 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 04:09:17,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 04:09:17,763 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc60b32bd5539dadbcbe1bdf86f21665a573ec180c72ba491085256c00923963 [2022-11-23 04:09:18,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 04:09:18,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 04:09:18,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 04:09:18,141 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 04:09:18,143 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 04:09:18,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread-wmm/safe003_tso.i [2022-11-23 04:09:21,335 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 04:09:21,622 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 04:09:21,624 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/sv-benchmarks/c/pthread-wmm/safe003_tso.i [2022-11-23 04:09:21,641 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/data/a8baa296c/28fbaece307648a69acf6f20fd64b65a/FLAG1944ea644 [2022-11-23 04:09:21,665 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/data/a8baa296c/28fbaece307648a69acf6f20fd64b65a [2022-11-23 04:09:21,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 04:09:21,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 04:09:21,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 04:09:21,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 04:09:21,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 04:09:21,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:09:21" (1/1) ... [2022-11-23 04:09:21,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f81365c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:21, skipping insertion in model container [2022-11-23 04:09:21,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:09:21" (1/1) ... [2022-11-23 04:09:21,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 04:09:21,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 04:09:21,911 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_efbb6561-4f76-4205-8ae9-91e683e2e86b/sv-benchmarks/c/pthread-wmm/safe003_tso.i[945,958] [2022-11-23 04:09:22,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:09:22,133 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 04:09:22,150 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_efbb6561-4f76-4205-8ae9-91e683e2e86b/sv-benchmarks/c/pthread-wmm/safe003_tso.i[945,958] [2022-11-23 04:09:22,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:09:22,246 INFO L208 MainTranslator]: Completed translation [2022-11-23 04:09:22,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:22 WrapperNode [2022-11-23 04:09:22,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 04:09:22,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 04:09:22,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 04:09:22,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 04:09:22,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:22" (1/1) ... [2022-11-23 04:09:22,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:22" (1/1) ... [2022-11-23 04:09:22,301 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-23 04:09:22,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 04:09:22,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 04:09:22,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 04:09:22,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 04:09:22,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:22" (1/1) ... [2022-11-23 04:09:22,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:22" (1/1) ... [2022-11-23 04:09:22,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:22" (1/1) ... [2022-11-23 04:09:22,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:22" (1/1) ... [2022-11-23 04:09:22,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:22" (1/1) ... [2022-11-23 04:09:22,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:22" (1/1) ... [2022-11-23 04:09:22,323 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:22" (1/1) ... [2022-11-23 04:09:22,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:22" (1/1) ... [2022-11-23 04:09:22,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 04:09:22,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 04:09:22,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 04:09:22,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 04:09:22,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:22" (1/1) ... [2022-11-23 04:09:22,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:09:22,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:09:22,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 04:09:22,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 04:09:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 04:09:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 04:09:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 04:09:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 04:09:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 04:09:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-23 04:09:22,429 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-23 04:09:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-23 04:09:22,429 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-23 04:09:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-23 04:09:22,430 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-23 04:09:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 04:09:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 04:09:22,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 04:09:22,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 04:09:22,433 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 04:09:22,614 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 04:09:22,616 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 04:09:22,818 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 04:09:22,831 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 04:09:22,833 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 04:09:22,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:09:22 BoogieIcfgContainer [2022-11-23 04:09:22,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 04:09:22,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 04:09:22,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 04:09:22,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 04:09:22,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:09:21" (1/3) ... [2022-11-23 04:09:22,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266eeabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:09:22, skipping insertion in model container [2022-11-23 04:09:22,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:09:22" (2/3) ... [2022-11-23 04:09:22,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266eeabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:09:22, skipping insertion in model container [2022-11-23 04:09:22,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:09:22" (3/3) ... [2022-11-23 04:09:22,860 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_tso.i [2022-11-23 04:09:22,869 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 04:09:22,880 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 04:09:22,880 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 04:09:22,880 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 04:09:22,963 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 04:09:23,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-11-23 04:09:23,060 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-23 04:09:23,061 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 04:09:23,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-23 04:09:23,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-11-23 04:09:23,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-11-23 04:09:23,078 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 04:09:23,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 159 flow [2022-11-23 04:09:23,095 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 159 flow [2022-11-23 04:09:23,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 159 flow [2022-11-23 04:09:23,124 INFO L130 PetriNetUnfolder]: 1/75 cut-off events. [2022-11-23 04:09:23,124 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 04:09:23,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 1/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 37 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-11-23 04:09:23,126 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2022-11-23 04:09:25,825 INFO L134 LiptonReduction]: Checked pairs total: 2294 [2022-11-23 04:09:25,825 INFO L136 LiptonReduction]: Total number of compositions: 64 [2022-11-23 04:09:25,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 04:09:25,869 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;@7b930d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 04:09:25,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 04:09:25,880 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2022-11-23 04:09:25,880 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 04:09:25,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:09:25,882 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:09:25,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 04:09:25,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:09:25,889 INFO L85 PathProgramCache]: Analyzing trace with hash -770226522, now seen corresponding path program 1 times [2022-11-23 04:09:25,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:09:25,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143150098] [2022-11-23 04:09:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:09:25,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:09:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:09:26,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:09:26,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:09:26,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143150098] [2022-11-23 04:09:26,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143150098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:09:26,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:09:26,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 04:09:26,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134592389] [2022-11-23 04:09:26,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:09:26,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:09:26,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:09:26,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:09:26,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:09:26,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 156 [2022-11-23 04:09:26,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2022-11-23 04:09:26,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:09:26,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 156 [2022-11-23 04:09:26,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:09:26,886 INFO L130 PetriNetUnfolder]: 416/720 cut-off events. [2022-11-23 04:09:26,887 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-23 04:09:26,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 720 events. 416/720 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3582 event pairs, 159 based on Foata normal form. 43/763 useless extension candidates. Maximal degree in co-relation 1442. Up to 362 conditions per place. [2022-11-23 04:09:26,899 INFO L137 encePairwiseOnDemand]: 148/156 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2022-11-23 04:09:26,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 133 flow [2022-11-23 04:09:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:09:26,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:09:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2022-11-23 04:09:26,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.561965811965812 [2022-11-23 04:09:26,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2022-11-23 04:09:26,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2022-11-23 04:09:26,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:09:26,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2022-11-23 04:09:26,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2022-11-23 04:09:26,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2022-11-23 04:09:26,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2022-11-23 04:09:26,957 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 263 transitions. [2022-11-23 04:09:26,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 133 flow [2022-11-23 04:09:26,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 04:09:26,962 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2022-11-23 04:09:26,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2022-11-23 04:09:26,968 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2022-11-23 04:09:26,969 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2022-11-23 04:09:26,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2022-11-23 04:09:26,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:09:26,969 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:09:26,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 04:09:26,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 04:09:26,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:09:26,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1892781026, now seen corresponding path program 1 times [2022-11-23 04:09:26,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:09:26,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984656788] [2022-11-23 04:09:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:09:26,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:09:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:09:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:09:27,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:09:27,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984656788] [2022-11-23 04:09:27,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984656788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:09:27,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:09:27,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:09:27,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238844353] [2022-11-23 04:09:27,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:09:27,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:09:27,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:09:27,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:09:27,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:09:27,270 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 156 [2022-11-23 04:09:27,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2022-11-23 04:09:27,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:09:27,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 156 [2022-11-23 04:09:27,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:09:27,414 INFO L130 PetriNetUnfolder]: 391/673 cut-off events. [2022-11-23 04:09:27,414 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2022-11-23 04:09:27,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1836 conditions, 673 events. 391/673 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3291 event pairs, 51 based on Foata normal form. 8/680 useless extension candidates. Maximal degree in co-relation 1824. Up to 307 conditions per place. [2022-11-23 04:09:27,419 INFO L137 encePairwiseOnDemand]: 149/156 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2022-11-23 04:09:27,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 212 flow [2022-11-23 04:09:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:09:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 04:09:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2022-11-23 04:09:27,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5496794871794872 [2022-11-23 04:09:27,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 343 transitions. [2022-11-23 04:09:27,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 343 transitions. [2022-11-23 04:09:27,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:09:27,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 343 transitions. [2022-11-23 04:09:27,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2022-11-23 04:09:27,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2022-11-23 04:09:27,431 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2022-11-23 04:09:27,431 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 343 transitions. [2022-11-23 04:09:27,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 212 flow [2022-11-23 04:09:27,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 04:09:27,438 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 122 flow [2022-11-23 04:09:27,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2022-11-23 04:09:27,439 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2022-11-23 04:09:27,439 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 122 flow [2022-11-23 04:09:27,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2022-11-23 04:09:27,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:09:27,440 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:09:27,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 04:09:27,441 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 04:09:27,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:09:27,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1892780995, now seen corresponding path program 1 times [2022-11-23 04:09:27,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:09:27,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317936863] [2022-11-23 04:09:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:09:27,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:09:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:09:27,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:09:27,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:09:27,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317936863] [2022-11-23 04:09:27,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317936863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:09:27,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:09:27,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:09:27,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848608432] [2022-11-23 04:09:27,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:09:27,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:09:27,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:09:27,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:09:27,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:09:27,658 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 156 [2022-11-23 04:09:27,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2022-11-23 04:09:27,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:09:27,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 156 [2022-11-23 04:09:27,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:09:27,850 INFO L130 PetriNetUnfolder]: 605/975 cut-off events. [2022-11-23 04:09:27,850 INFO L131 PetriNetUnfolder]: For 1083/1083 co-relation queries the response was YES. [2022-11-23 04:09:27,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2955 conditions, 975 events. 605/975 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4340 event pairs, 88 based on Foata normal form. 16/991 useless extension candidates. Maximal degree in co-relation 2940. Up to 360 conditions per place. [2022-11-23 04:09:27,857 INFO L137 encePairwiseOnDemand]: 148/156 looper letters, 40 selfloop transitions, 17 changer transitions 6/63 dead transitions. [2022-11-23 04:09:27,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 63 transitions, 418 flow [2022-11-23 04:09:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 04:09:27,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 04:09:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 428 transitions. [2022-11-23 04:09:27,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5487179487179488 [2022-11-23 04:09:27,859 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 428 transitions. [2022-11-23 04:09:27,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 428 transitions. [2022-11-23 04:09:27,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:09:27,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 428 transitions. [2022-11-23 04:09:27,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 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) [2022-11-23 04:09:27,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2022-11-23 04:09:27,863 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2022-11-23 04:09:27,864 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 122 flow. Second operand 5 states and 428 transitions. [2022-11-23 04:09:27,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 63 transitions, 418 flow [2022-11-23 04:09:27,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 63 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:09:27,869 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 262 flow [2022-11-23 04:09:27,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2022-11-23 04:09:27,871 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2022-11-23 04:09:27,871 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 262 flow [2022-11-23 04:09:27,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2022-11-23 04:09:27,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:09:27,872 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:09:27,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 04:09:27,873 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 04:09:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:09:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1427442527, now seen corresponding path program 1 times [2022-11-23 04:09:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:09:27,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761012872] [2022-11-23 04:09:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:09:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:09:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:09:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:09:28,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:09:28,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761012872] [2022-11-23 04:09:28,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761012872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:09:28,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:09:28,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:09:28,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127064641] [2022-11-23 04:09:28,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:09:28,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:09:28,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:09:28,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:09:28,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:09:28,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 156 [2022-11-23 04:09:28,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 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) [2022-11-23 04:09:28,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:09:28,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 156 [2022-11-23 04:09:28,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:09:28,146 INFO L130 PetriNetUnfolder]: 443/771 cut-off events. [2022-11-23 04:09:28,146 INFO L131 PetriNetUnfolder]: For 1553/1554 co-relation queries the response was YES. [2022-11-23 04:09:28,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2732 conditions, 771 events. 443/771 cut-off events. For 1553/1554 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3533 event pairs, 100 based on Foata normal form. 7/777 useless extension candidates. Maximal degree in co-relation 2713. Up to 342 conditions per place. [2022-11-23 04:09:28,152 INFO L137 encePairwiseOnDemand]: 149/156 looper letters, 24 selfloop transitions, 17 changer transitions 7/50 dead transitions. [2022-11-23 04:09:28,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 453 flow [2022-11-23 04:09:28,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:09:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 04:09:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2022-11-23 04:09:28,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5432692307692307 [2022-11-23 04:09:28,155 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 339 transitions. [2022-11-23 04:09:28,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 339 transitions. [2022-11-23 04:09:28,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:09:28,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 339 transitions. [2022-11-23 04:09:28,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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) [2022-11-23 04:09:28,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2022-11-23 04:09:28,159 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2022-11-23 04:09:28,159 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 262 flow. Second operand 4 states and 339 transitions. [2022-11-23 04:09:28,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 453 flow [2022-11-23 04:09:28,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 453 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 04:09:28,166 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 344 flow [2022-11-23 04:09:28,166 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2022-11-23 04:09:28,167 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2022-11-23 04:09:28,167 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 344 flow [2022-11-23 04:09:28,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 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) [2022-11-23 04:09:28,168 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:09:28,168 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:09:28,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 04:09:28,168 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 04:09:28,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:09:28,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2138595477, now seen corresponding path program 1 times [2022-11-23 04:09:28,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:09:28,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716230998] [2022-11-23 04:09:28,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:09:28,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:09:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:09:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:09:28,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:09:28,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716230998] [2022-11-23 04:09:28,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716230998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:09:28,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:09:28,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:09:28,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223255742] [2022-11-23 04:09:28,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:09:28,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:09:28,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:09:28,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:09:28,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:09:28,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 156 [2022-11-23 04:09:28,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 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) [2022-11-23 04:09:28,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:09:28,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 156 [2022-11-23 04:09:28,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:09:28,456 INFO L130 PetriNetUnfolder]: 427/736 cut-off events. [2022-11-23 04:09:28,457 INFO L131 PetriNetUnfolder]: For 2584/2584 co-relation queries the response was YES. [2022-11-23 04:09:28,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2806 conditions, 736 events. 427/736 cut-off events. For 2584/2584 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3360 event pairs, 96 based on Foata normal form. 27/763 useless extension candidates. Maximal degree in co-relation 2782. Up to 304 conditions per place. [2022-11-23 04:09:28,462 INFO L137 encePairwiseOnDemand]: 150/156 looper letters, 32 selfloop transitions, 7 changer transitions 19/58 dead transitions. [2022-11-23 04:09:28,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 544 flow [2022-11-23 04:09:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 04:09:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 04:09:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2022-11-23 04:09:28,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5358974358974359 [2022-11-23 04:09:28,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2022-11-23 04:09:28,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2022-11-23 04:09:28,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:09:28,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2022-11-23 04:09:28,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 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) [2022-11-23 04:09:28,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2022-11-23 04:09:28,468 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2022-11-23 04:09:28,468 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 344 flow. Second operand 5 states and 418 transitions. [2022-11-23 04:09:28,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 544 flow [2022-11-23 04:09:28,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 539 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:09:28,476 INFO L231 Difference]: Finished difference. Result has 49 places, 26 transitions, 231 flow [2022-11-23 04:09:28,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=49, PETRI_TRANSITIONS=26} [2022-11-23 04:09:28,477 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2022-11-23 04:09:28,477 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 26 transitions, 231 flow [2022-11-23 04:09:28,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 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) [2022-11-23 04:09:28,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:09:28,478 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:09:28,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 04:09:28,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 04:09:28,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:09:28,479 INFO L85 PathProgramCache]: Analyzing trace with hash 800407505, now seen corresponding path program 1 times [2022-11-23 04:09:28,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:09:28,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499143388] [2022-11-23 04:09:28,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:09:28,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:09:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:09:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:09:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:09:28,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499143388] [2022-11-23 04:09:28,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499143388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:09:28,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:09:28,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 04:09:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403695058] [2022-11-23 04:09:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:09:28,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:09:28,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:09:28,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:09:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:09:28,585 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 156 [2022-11-23 04:09:28,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 26 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2022-11-23 04:09:28,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:09:28,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 156 [2022-11-23 04:09:28,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:09:28,642 INFO L130 PetriNetUnfolder]: 140/264 cut-off events. [2022-11-23 04:09:28,642 INFO L131 PetriNetUnfolder]: For 823/823 co-relation queries the response was YES. [2022-11-23 04:09:28,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1120 conditions, 264 events. 140/264 cut-off events. For 823/823 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 942 event pairs, 48 based on Foata normal form. 2/265 useless extension candidates. Maximal degree in co-relation 1093. Up to 151 conditions per place. [2022-11-23 04:09:28,645 INFO L137 encePairwiseOnDemand]: 153/156 looper letters, 20 selfloop transitions, 4 changer transitions 5/32 dead transitions. [2022-11-23 04:09:28,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 32 transitions, 336 flow [2022-11-23 04:09:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:09:28,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:09:28,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2022-11-23 04:09:28,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2022-11-23 04:09:28,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2022-11-23 04:09:28,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2022-11-23 04:09:28,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:09:28,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2022-11-23 04:09:28,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2022-11-23 04:09:28,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2022-11-23 04:09:28,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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) [2022-11-23 04:09:28,650 INFO L175 Difference]: Start difference. First operand has 49 places, 26 transitions, 231 flow. Second operand 3 states and 273 transitions. [2022-11-23 04:09:28,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 32 transitions, 336 flow [2022-11-23 04:09:28,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 264 flow, removed 11 selfloop flow, removed 9 redundant places. [2022-11-23 04:09:28,656 INFO L231 Difference]: Finished difference. Result has 43 places, 24 transitions, 169 flow [2022-11-23 04:09:28,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=43, PETRI_TRANSITIONS=24} [2022-11-23 04:09:28,657 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2022-11-23 04:09:28,657 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 24 transitions, 169 flow [2022-11-23 04:09:28,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2022-11-23 04:09:28,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:09:28,658 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:09:28,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 04:09:28,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 04:09:28,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:09:28,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1913273379, now seen corresponding path program 1 times [2022-11-23 04:09:28,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:09:28,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507366370] [2022-11-23 04:09:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:09:28,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:09:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:09:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:09:28,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:09:28,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507366370] [2022-11-23 04:09:28,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507366370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:09:28,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:09:28,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:09:28,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020412204] [2022-11-23 04:09:28,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:09:28,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:09:28,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:09:28,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:09:28,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:09:28,774 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 156 [2022-11-23 04:09:28,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 24 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2022-11-23 04:09:28,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:09:28,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 156 [2022-11-23 04:09:28,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:09:28,881 INFO L130 PetriNetUnfolder]: 164/311 cut-off events. [2022-11-23 04:09:28,882 INFO L131 PetriNetUnfolder]: For 515/515 co-relation queries the response was YES. [2022-11-23 04:09:28,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1119 conditions, 311 events. 164/311 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1138 event pairs, 45 based on Foata normal form. 4/315 useless extension candidates. Maximal degree in co-relation 1098. Up to 113 conditions per place. [2022-11-23 04:09:28,884 INFO L137 encePairwiseOnDemand]: 152/156 looper letters, 17 selfloop transitions, 2 changer transitions 21/41 dead transitions. [2022-11-23 04:09:28,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 312 flow [2022-11-23 04:09:28,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 04:09:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 04:09:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-11-23 04:09:28,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2022-11-23 04:09:28,886 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-11-23 04:09:28,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-11-23 04:09:28,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:09:28,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-11-23 04:09:28,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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) [2022-11-23 04:09:28,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2022-11-23 04:09:28,890 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2022-11-23 04:09:28,890 INFO L175 Difference]: Start difference. First operand has 43 places, 24 transitions, 169 flow. Second operand 5 states and 440 transitions. [2022-11-23 04:09:28,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 312 flow [2022-11-23 04:09:28,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 290 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-23 04:09:28,894 INFO L231 Difference]: Finished difference. Result has 45 places, 17 transitions, 96 flow [2022-11-23 04:09:28,894 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=45, PETRI_TRANSITIONS=17} [2022-11-23 04:09:28,894 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2022-11-23 04:09:28,895 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 17 transitions, 96 flow [2022-11-23 04:09:28,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2022-11-23 04:09:28,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:09:28,895 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:09:28,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 04:09:28,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 04:09:28,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:09:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash 776001407, now seen corresponding path program 2 times [2022-11-23 04:09:28,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:09:28,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905084326] [2022-11-23 04:09:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:09:28,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:09:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:09:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:09:29,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:09:29,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905084326] [2022-11-23 04:09:29,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905084326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:09:29,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:09:29,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:09:29,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167023514] [2022-11-23 04:09:29,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:09:29,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:09:29,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:09:29,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:09:29,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:09:29,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 156 [2022-11-23 04:09:29,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 17 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:09:29,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:09:29,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 156 [2022-11-23 04:09:29,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:09:29,064 INFO L130 PetriNetUnfolder]: 64/131 cut-off events. [2022-11-23 04:09:29,064 INFO L131 PetriNetUnfolder]: For 222/222 co-relation queries the response was YES. [2022-11-23 04:09:29,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 131 events. 64/131 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 364 event pairs, 24 based on Foata normal form. 4/135 useless extension candidates. Maximal degree in co-relation 443. Up to 106 conditions per place. [2022-11-23 04:09:29,066 INFO L137 encePairwiseOnDemand]: 153/156 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2022-11-23 04:09:29,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 18 transitions, 122 flow [2022-11-23 04:09:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:09:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 04:09:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2022-11-23 04:09:29,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5464743589743589 [2022-11-23 04:09:29,068 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 341 transitions. [2022-11-23 04:09:29,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 341 transitions. [2022-11-23 04:09:29,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:09:29,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 341 transitions. [2022-11-23 04:09:29,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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) [2022-11-23 04:09:29,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2022-11-23 04:09:29,071 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2022-11-23 04:09:29,071 INFO L175 Difference]: Start difference. First operand has 45 places, 17 transitions, 96 flow. Second operand 4 states and 341 transitions. [2022-11-23 04:09:29,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 18 transitions, 122 flow [2022-11-23 04:09:29,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 18 transitions, 85 flow, removed 3 selfloop flow, removed 13 redundant places. [2022-11-23 04:09:29,073 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2022-11-23 04:09:29,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2022-11-23 04:09:29,073 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2022-11-23 04:09:29,074 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2022-11-23 04:09:29,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:09:29,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-23 04:09:29,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-23 04:09:29,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-23 04:09:29,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-23 04:09:29,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 04:09:29,078 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-11-23 04:09:29,081 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 04:09:29,082 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 04:09:29,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:09:29 BasicIcfg [2022-11-23 04:09:29,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 04:09:29,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 04:09:29,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 04:09:29,086 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 04:09:29,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:09:22" (3/4) ... [2022-11-23 04:09:29,090 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 04:09:29,097 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-23 04:09:29,097 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-23 04:09:29,097 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-23 04:09:29,101 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-23 04:09:29,101 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 04:09:29,102 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 04:09:29,102 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 04:09:29,141 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 04:09:29,141 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 04:09:29,142 INFO L158 Benchmark]: Toolchain (without parser) took 7473.36ms. Allocated memory was 136.3MB in the beginning and 209.7MB in the end (delta: 73.4MB). Free memory was 71.1MB in the beginning and 140.5MB in the end (delta: -69.5MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2022-11-23 04:09:29,142 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 136.3MB. Free memory was 104.8MB in the beginning and 104.6MB in the end (delta: 134.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 04:09:29,143 INFO L158 Benchmark]: CACSL2BoogieTranslator took 577.02ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 70.8MB in the beginning and 128.5MB in the end (delta: -57.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-11-23 04:09:29,143 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.99ms. Allocated memory is still 174.1MB. Free memory was 128.5MB in the beginning and 126.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 04:09:29,143 INFO L158 Benchmark]: Boogie Preprocessor took 26.01ms. Allocated memory is still 174.1MB. Free memory was 126.4MB in the beginning and 124.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 04:09:29,143 INFO L158 Benchmark]: RCFGBuilder took 509.65ms. Allocated memory is still 174.1MB. Free memory was 124.3MB in the beginning and 110.4MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 04:09:29,144 INFO L158 Benchmark]: TraceAbstraction took 6244.94ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 109.6MB in the beginning and 142.6MB in the end (delta: -33.0MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2022-11-23 04:09:29,144 INFO L158 Benchmark]: Witness Printer took 55.42ms. Allocated memory is still 209.7MB. Free memory was 142.6MB in the beginning and 140.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 04:09:29,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 136.3MB. Free memory was 104.8MB in the beginning and 104.6MB in the end (delta: 134.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 577.02ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 70.8MB in the beginning and 128.5MB in the end (delta: -57.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.99ms. Allocated memory is still 174.1MB. Free memory was 128.5MB in the beginning and 126.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.01ms. Allocated memory is still 174.1MB. Free memory was 126.4MB in the beginning and 124.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 509.65ms. Allocated memory is still 174.1MB. Free memory was 124.3MB in the beginning and 110.4MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6244.94ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 109.6MB in the beginning and 142.6MB in the end (delta: -33.0MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Witness Printer took 55.42ms. Allocated memory is still 209.7MB. Free memory was 142.6MB in the beginning and 140.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 84 PlacesBefore, 27 PlacesAfterwards, 75 TransitionsBefore, 18 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 64 TotalNumberOfCompositions, 2294 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1251, independent: 1157, independent conditional: 0, independent unconditional: 1157, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 776, independent: 736, independent conditional: 0, independent unconditional: 736, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 776, independent: 731, independent conditional: 0, independent unconditional: 731, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 154, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 127, dependent conditional: 0, dependent unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1251, independent: 421, independent conditional: 0, independent unconditional: 421, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 776, unknown conditional: 0, unknown unconditional: 776] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 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: 6.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 273 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 184 mSDsluCounter, 92 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 357 IncrementalHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 62 mSDtfsCounter, 357 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=4, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 381 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 04:09:29,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb6561-4f76-4205-8ae9-91e683e2e86b/bin/uautomizer-QkZJyEgLgS/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