./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe024_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_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/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_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe024_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/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_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/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 f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 --- 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 03:51:27,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:51:27,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:51:27,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:51:27,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:51:27,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:51:27,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:51:27,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:51:27,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:51:27,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:51:27,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:51:27,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:51:27,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:51:27,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:51:27,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:51:27,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:51:27,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:51:27,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:51:27,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:51:27,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:51:27,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:51:27,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:51:27,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:51:27,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:51:27,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:51:27,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:51:27,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:51:27,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:51:27,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:51:27,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:51:27,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:51:27,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:51:27,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:51:27,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:51:27,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:51:27,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:51:27,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:51:27,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:51:27,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:51:27,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:51:27,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:51:27,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:51:27,431 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:51:27,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:51:27,432 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:51:27,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:51:27,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:51:27,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:51:27,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:51:27,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:51:27,436 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:51:27,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:51:27,438 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:51:27,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:51:27,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:51:27,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:51:27,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:51:27,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:51:27,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:51:27,440 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:51:27,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:51:27,441 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:51:27,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:51:27,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:51:27,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:51:27,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:51:27,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:51:27,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:51:27,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:51:27,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:51:27,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:51:27,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:51:27,447 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:51:27,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:51:27,447 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:51:27,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:51:27,448 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_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 [2022-11-23 03:51:27,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:51:27,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:51:27,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:51:27,833 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:51:27,834 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:51:27,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread-wmm/safe024_tso.i [2022-11-23 03:51:31,074 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:51:31,318 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:51:31,319 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/sv-benchmarks/c/pthread-wmm/safe024_tso.i [2022-11-23 03:51:31,332 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/bin/uautomizer-QkZJyEgLgS/data/14dfd498f/0bdd55e35da045d69824d457b7193bf7/FLAGeee3e1344 [2022-11-23 03:51:31,347 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/bin/uautomizer-QkZJyEgLgS/data/14dfd498f/0bdd55e35da045d69824d457b7193bf7 [2022-11-23 03:51:31,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:51:31,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:51:31,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:51:31,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:51:31,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:51:31,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:51:31" (1/1) ... [2022-11-23 03:51:31,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101860bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31, skipping insertion in model container [2022-11-23 03:51:31,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:51:31" (1/1) ... [2022-11-23 03:51:31,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:51:31,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:51:31,610 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_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/sv-benchmarks/c/pthread-wmm/safe024_tso.i[945,958] [2022-11-23 03:51:31,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:51:31,808 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:51:31,822 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_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/sv-benchmarks/c/pthread-wmm/safe024_tso.i[945,958] [2022-11-23 03:51:31,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:51:31,928 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:51:31,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31 WrapperNode [2022-11-23 03:51:31,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:51:31,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:51:31,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:51:31,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:51:31,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31" (1/1) ... [2022-11-23 03:51:31,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31" (1/1) ... [2022-11-23 03:51:32,022 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-11-23 03:51:32,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:51:32,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:51:32,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:51:32,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:51:32,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31" (1/1) ... [2022-11-23 03:51:32,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31" (1/1) ... [2022-11-23 03:51:32,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31" (1/1) ... [2022-11-23 03:51:32,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31" (1/1) ... [2022-11-23 03:51:32,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31" (1/1) ... [2022-11-23 03:51:32,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31" (1/1) ... [2022-11-23 03:51:32,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31" (1/1) ... [2022-11-23 03:51:32,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31" (1/1) ... [2022-11-23 03:51:32,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:51:32,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:51:32,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:51:32,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:51:32,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31" (1/1) ... [2022-11-23 03:51:32,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:51:32,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:51:32,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:51:32,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:51:32,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:51:32,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 03:51:32,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:51:32,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:51:32,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:51:32,181 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-23 03:51:32,181 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-23 03:51:32,181 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-23 03:51:32,181 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-23 03:51:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-23 03:51:32,182 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-23 03:51:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:51:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 03:51:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:51:32,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:51:32,185 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 03:51:32,327 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:51:32,329 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:51:32,604 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:51:32,611 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:51:32,611 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:51:32,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:32 BoogieIcfgContainer [2022-11-23 03:51:32,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:51:32,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:51:32,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:51:32,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:51:32,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:51:31" (1/3) ... [2022-11-23 03:51:32,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50791658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:51:32, skipping insertion in model container [2022-11-23 03:51:32,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:31" (2/3) ... [2022-11-23 03:51:32,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50791658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:51:32, skipping insertion in model container [2022-11-23 03:51:32,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:32" (3/3) ... [2022-11-23 03:51:32,623 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2022-11-23 03:51:32,632 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 03:51:32,644 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:51:32,645 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:51:32,645 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:51:32,714 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 03:51:32,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2022-11-23 03:51:32,820 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2022-11-23 03:51:32,822 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:51:32,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-23 03:51:32,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 201 flow [2022-11-23 03:51:32,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 161 flow [2022-11-23 03:51:32,834 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:51:32,849 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 76 transitions, 161 flow [2022-11-23 03:51:32,852 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 76 transitions, 161 flow [2022-11-23 03:51:32,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 76 transitions, 161 flow [2022-11-23 03:51:32,877 INFO L130 PetriNetUnfolder]: 1/76 cut-off events. [2022-11-23 03:51:32,877 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:51:32,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 1/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 36 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-11-23 03:51:32,879 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2022-11-23 03:51:35,530 INFO L134 LiptonReduction]: Checked pairs total: 2220 [2022-11-23 03:51:35,530 INFO L136 LiptonReduction]: Total number of compositions: 65 [2022-11-23 03:51:35,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:51:35,572 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;@37bcc10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:51:35,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 03:51:35,582 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2022-11-23 03:51:35,583 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:51:35,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:51:35,584 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:51:35,586 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 03:51:35,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:35,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2126079205, now seen corresponding path program 1 times [2022-11-23 03:51:35,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:35,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155021146] [2022-11-23 03:51:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:35,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:36,202 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 03:51:36,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155021146] [2022-11-23 03:51:36,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155021146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:36,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:36,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:51:36,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322291533] [2022-11-23 03:51:36,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:36,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:51:36,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:36,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:51:36,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:51:36,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 158 [2022-11-23 03:51:36,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 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 03:51:36,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:51:36,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 158 [2022-11-23 03:51:36,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:51:36,407 INFO L130 PetriNetUnfolder]: 143/266 cut-off events. [2022-11-23 03:51:36,410 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-23 03:51:36,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 266 events. 143/266 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1080 event pairs, 53 based on Foata normal form. 9/271 useless extension candidates. Maximal degree in co-relation 526. Up to 154 conditions per place. [2022-11-23 03:51:36,418 INFO L137 encePairwiseOnDemand]: 154/158 looper letters, 17 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2022-11-23 03:51:36,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 91 flow [2022-11-23 03:51:36,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:51:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:51:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2022-11-23 03:51:36,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5843881856540084 [2022-11-23 03:51:36,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2022-11-23 03:51:36,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2022-11-23 03:51:36,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:51:36,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2022-11-23 03:51:36,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 03:51:36,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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 03:51:36,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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 03:51:36,468 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 277 transitions. [2022-11-23 03:51:36,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 91 flow [2022-11-23 03:51:36,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 88 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 03:51:36,473 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2022-11-23 03:51:36,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2022-11-23 03:51:36,480 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2022-11-23 03:51:36,480 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2022-11-23 03:51:36,480 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 03:51:36,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:51:36,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:51:36,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:51:36,482 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 03:51:36,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1483947281, now seen corresponding path program 1 times [2022-11-23 03:51:36,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:36,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470442943] [2022-11-23 03:51:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:36,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:36,637 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 03:51:36,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:36,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470442943] [2022-11-23 03:51:36,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470442943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:36,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:36,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:51:36,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247428279] [2022-11-23 03:51:36,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:36,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:51:36,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:36,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:51:36,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:51:36,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 158 [2022-11-23 03:51:36,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 4 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 03:51:36,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:51:36,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 158 [2022-11-23 03:51:36,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:51:36,775 INFO L130 PetriNetUnfolder]: 201/366 cut-off events. [2022-11-23 03:51:36,775 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-23 03:51:36,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 366 events. 201/366 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1571 event pairs, 73 based on Foata normal form. 24/389 useless extension candidates. Maximal degree in co-relation 792. Up to 122 conditions per place. [2022-11-23 03:51:36,779 INFO L137 encePairwiseOnDemand]: 154/158 looper letters, 21 selfloop transitions, 3 changer transitions 3/29 dead transitions. [2022-11-23 03:51:36,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 131 flow [2022-11-23 03:51:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:51:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:51:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2022-11-23 03:51:36,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5712025316455697 [2022-11-23 03:51:36,784 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2022-11-23 03:51:36,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2022-11-23 03:51:36,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:51:36,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2022-11-23 03:51:36,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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 03:51:36,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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 03:51:36,793 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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 03:51:36,793 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 361 transitions. [2022-11-23 03:51:36,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 131 flow [2022-11-23 03:51:36,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 125 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:51:36,796 INFO L231 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2022-11-23 03:51:36,796 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2022-11-23 03:51:36,797 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2022-11-23 03:51:36,797 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2022-11-23 03:51:36,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 03:51:36,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:51:36,799 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:51:36,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:51:36,800 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 03:51:36,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:36,803 INFO L85 PathProgramCache]: Analyzing trace with hash 640969633, now seen corresponding path program 1 times [2022-11-23 03:51:36,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:36,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971308115] [2022-11-23 03:51:36,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:36,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:36,973 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 03:51:36,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:36,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971308115] [2022-11-23 03:51:36,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971308115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:36,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:36,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:51:36,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410022941] [2022-11-23 03:51:36,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:36,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:51:36,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:36,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:51:36,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:51:37,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 158 [2022-11-23 03:51:37,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 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 03:51:37,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:51:37,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 158 [2022-11-23 03:51:37,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:51:37,123 INFO L130 PetriNetUnfolder]: 105/205 cut-off events. [2022-11-23 03:51:37,123 INFO L131 PetriNetUnfolder]: For 128/130 co-relation queries the response was YES. [2022-11-23 03:51:37,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 205 events. 105/205 cut-off events. For 128/130 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 731 event pairs, 27 based on Foata normal form. 12/214 useless extension candidates. Maximal degree in co-relation 508. Up to 123 conditions per place. [2022-11-23 03:51:37,131 INFO L137 encePairwiseOnDemand]: 152/158 looper letters, 20 selfloop transitions, 4 changer transitions 13/40 dead transitions. [2022-11-23 03:51:37,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 194 flow [2022-11-23 03:51:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:51:37,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:51:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2022-11-23 03:51:37,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5683544303797469 [2022-11-23 03:51:37,134 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 449 transitions. [2022-11-23 03:51:37,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 449 transitions. [2022-11-23 03:51:37,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:51:37,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 449 transitions. [2022-11-23 03:51:37,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 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 03:51:37,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 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 03:51:37,139 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 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 03:51:37,139 INFO L175 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 5 states and 449 transitions. [2022-11-23 03:51:37,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 194 flow [2022-11-23 03:51:37,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 176 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-23 03:51:37,143 INFO L231 Difference]: Finished difference. Result has 33 places, 20 transitions, 82 flow [2022-11-23 03:51:37,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=20} [2022-11-23 03:51:37,145 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2022-11-23 03:51:37,145 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 20 transitions, 82 flow [2022-11-23 03:51:37,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 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 03:51:37,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:51:37,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:51:37,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:51:37,147 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 03:51:37,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:37,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1662220828, now seen corresponding path program 1 times [2022-11-23 03:51:37,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:37,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955875251] [2022-11-23 03:51:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:37,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:37,374 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 03:51:37,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:37,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955875251] [2022-11-23 03:51:37,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955875251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:37,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:37,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:51:37,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672908497] [2022-11-23 03:51:37,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:37,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:51:37,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:37,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:51:37,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:51:37,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 158 [2022-11-23 03:51:37,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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 03:51:37,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:51:37,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 158 [2022-11-23 03:51:37,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:51:37,520 INFO L130 PetriNetUnfolder]: 71/151 cut-off events. [2022-11-23 03:51:37,521 INFO L131 PetriNetUnfolder]: For 111/117 co-relation queries the response was YES. [2022-11-23 03:51:37,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 151 events. 71/151 cut-off events. For 111/117 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 484 event pairs, 14 based on Foata normal form. 14/162 useless extension candidates. Maximal degree in co-relation 469. Up to 71 conditions per place. [2022-11-23 03:51:37,526 INFO L137 encePairwiseOnDemand]: 152/158 looper letters, 24 selfloop transitions, 7 changer transitions 12/46 dead transitions. [2022-11-23 03:51:37,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 272 flow [2022-11-23 03:51:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:51:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:51:37,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 537 transitions. [2022-11-23 03:51:37,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664556962025317 [2022-11-23 03:51:37,530 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 537 transitions. [2022-11-23 03:51:37,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 537 transitions. [2022-11-23 03:51:37,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:51:37,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 537 transitions. [2022-11-23 03:51:37,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 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 03:51:37,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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 03:51:37,542 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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 03:51:37,543 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 82 flow. Second operand 6 states and 537 transitions. [2022-11-23 03:51:37,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 272 flow [2022-11-23 03:51:37,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 266 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-23 03:51:37,547 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 132 flow [2022-11-23 03:51:37,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2022-11-23 03:51:37,550 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2022-11-23 03:51:37,550 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 132 flow [2022-11-23 03:51:37,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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 03:51:37,551 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:51:37,551 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:51:37,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:51:37,552 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 03:51:37,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:37,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2059395484, now seen corresponding path program 1 times [2022-11-23 03:51:37,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:37,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632758950] [2022-11-23 03:51:37,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:37,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:37,747 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 03:51:37,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:37,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632758950] [2022-11-23 03:51:37,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632758950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:37,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:37,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:51:37,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951989206] [2022-11-23 03:51:37,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:37,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:51:37,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:37,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:51:37,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:51:37,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 158 [2022-11-23 03:51:37,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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 03:51:37,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:51:37,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 158 [2022-11-23 03:51:37,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:51:37,884 INFO L130 PetriNetUnfolder]: 50/112 cut-off events. [2022-11-23 03:51:37,884 INFO L131 PetriNetUnfolder]: For 206/216 co-relation queries the response was YES. [2022-11-23 03:51:37,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 112 events. 50/112 cut-off events. For 206/216 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 320 event pairs, 12 based on Foata normal form. 13/122 useless extension candidates. Maximal degree in co-relation 383. Up to 46 conditions per place. [2022-11-23 03:51:37,885 INFO L137 encePairwiseOnDemand]: 152/158 looper letters, 21 selfloop transitions, 10 changer transitions 6/40 dead transitions. [2022-11-23 03:51:37,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 280 flow [2022-11-23 03:51:37,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:51:37,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:51:37,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2022-11-23 03:51:37,889 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.554249547920434 [2022-11-23 03:51:37,889 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2022-11-23 03:51:37,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2022-11-23 03:51:37,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:51:37,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2022-11-23 03:51:37,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 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 03:51:37,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 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 03:51:37,896 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 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 03:51:37,896 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 132 flow. Second operand 7 states and 613 transitions. [2022-11-23 03:51:37,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 280 flow [2022-11-23 03:51:37,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 244 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-23 03:51:37,904 INFO L231 Difference]: Finished difference. Result has 40 places, 23 transitions, 134 flow [2022-11-23 03:51:37,904 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=134, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2022-11-23 03:51:37,908 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2022-11-23 03:51:37,908 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 134 flow [2022-11-23 03:51:37,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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 03:51:37,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:51:37,909 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:51:37,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:51:37,909 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 03:51:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1925094909, now seen corresponding path program 1 times [2022-11-23 03:51:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:37,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424756318] [2022-11-23 03:51:37,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:37,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:38,072 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 03:51:38,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424756318] [2022-11-23 03:51:38,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424756318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:38,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:38,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:51:38,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103986568] [2022-11-23 03:51:38,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:38,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:51:38,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:51:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:51:38,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 158 [2022-11-23 03:51:38,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 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 03:51:38,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:51:38,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 158 [2022-11-23 03:51:38,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:51:38,247 INFO L130 PetriNetUnfolder]: 96/204 cut-off events. [2022-11-23 03:51:38,247 INFO L131 PetriNetUnfolder]: For 351/351 co-relation queries the response was YES. [2022-11-23 03:51:38,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 204 events. 96/204 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 713 event pairs, 12 based on Foata normal form. 1/205 useless extension candidates. Maximal degree in co-relation 679. Up to 76 conditions per place. [2022-11-23 03:51:38,249 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 26 selfloop transitions, 3 changer transitions 23/53 dead transitions. [2022-11-23 03:51:38,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 390 flow [2022-11-23 03:51:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:51:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:51:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 515 transitions. [2022-11-23 03:51:38,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5432489451476793 [2022-11-23 03:51:38,252 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 515 transitions. [2022-11-23 03:51:38,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 515 transitions. [2022-11-23 03:51:38,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:51:38,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 515 transitions. [2022-11-23 03:51:38,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 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 03:51:38,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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 03:51:38,257 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 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 03:51:38,257 INFO L175 Difference]: Start difference. First operand has 40 places, 23 transitions, 134 flow. Second operand 6 states and 515 transitions. [2022-11-23 03:51:38,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 390 flow [2022-11-23 03:51:38,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 53 transitions, 312 flow, removed 22 selfloop flow, removed 7 redundant places. [2022-11-23 03:51:38,260 INFO L231 Difference]: Finished difference. Result has 38 places, 23 transitions, 102 flow [2022-11-23 03:51:38,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2022-11-23 03:51:38,261 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2022-11-23 03:51:38,262 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 102 flow [2022-11-23 03:51:38,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 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 03:51:38,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:51:38,263 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:51:38,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:51:38,263 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 03:51:38,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:51:38,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1677685149, now seen corresponding path program 2 times [2022-11-23 03:51:38,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:51:38,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398440083] [2022-11-23 03:51:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:51:38,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:51:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:51:38,373 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 03:51:38,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:51:38,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398440083] [2022-11-23 03:51:38,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398440083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:51:38,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:51:38,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:51:38,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291650725] [2022-11-23 03:51:38,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:51:38,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:51:38,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:51:38,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:51:38,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:51:38,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 158 [2022-11-23 03:51:38,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 03:51:38,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:51:38,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 158 [2022-11-23 03:51:38,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:51:38,439 INFO L130 PetriNetUnfolder]: 34/86 cut-off events. [2022-11-23 03:51:38,439 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-11-23 03:51:38,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 86 events. 34/86 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 6 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 272. Up to 52 conditions per place. [2022-11-23 03:51:38,440 INFO L137 encePairwiseOnDemand]: 155/158 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2022-11-23 03:51:38,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 190 flow [2022-11-23 03:51:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:51:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:51:38,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2022-11-23 03:51:38,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5585443037974683 [2022-11-23 03:51:38,442 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2022-11-23 03:51:38,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2022-11-23 03:51:38,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:51:38,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2022-11-23 03:51:38,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 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 03:51:38,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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 03:51:38,445 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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 03:51:38,445 INFO L175 Difference]: Start difference. First operand has 38 places, 23 transitions, 102 flow. Second operand 4 states and 353 transitions. [2022-11-23 03:51:38,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 190 flow [2022-11-23 03:51:38,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 186 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-23 03:51:38,447 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2022-11-23 03:51:38,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2022-11-23 03:51:38,448 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2022-11-23 03:51:38,448 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2022-11-23 03:51:38,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 03:51:38,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-23 03:51:38,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-23 03:51:38,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-23 03:51:38,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-23 03:51:38,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:51:38,453 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-23 03:51:38,456 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 03:51:38,456 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:51:38,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:51:38 BasicIcfg [2022-11-23 03:51:38,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:51:38,461 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:51:38,461 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:51:38,461 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:51:38,462 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:32" (3/4) ... [2022-11-23 03:51:38,465 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 03:51:38,473 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-23 03:51:38,473 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-23 03:51:38,473 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-23 03:51:38,477 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-23 03:51:38,478 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 03:51:38,478 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 03:51:38,478 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 03:51:38,512 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 03:51:38,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:51:38,513 INFO L158 Benchmark]: Toolchain (without parser) took 7161.20ms. Allocated memory was 127.9MB in the beginning and 203.4MB in the end (delta: 75.5MB). Free memory was 81.7MB in the beginning and 123.9MB in the end (delta: -42.2MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2022-11-23 03:51:38,514 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 70.4MB in the beginning and 70.3MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:51:38,514 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.70ms. Allocated memory was 127.9MB in the beginning and 163.6MB in the end (delta: 35.7MB). Free memory was 81.4MB in the beginning and 131.1MB in the end (delta: -49.8MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2022-11-23 03:51:38,515 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.84ms. Allocated memory is still 163.6MB. Free memory was 131.1MB in the beginning and 132.6MB in the end (delta: -1.5MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2022-11-23 03:51:38,515 INFO L158 Benchmark]: Boogie Preprocessor took 62.52ms. Allocated memory is still 163.6MB. Free memory was 132.6MB in the beginning and 130.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:51:38,515 INFO L158 Benchmark]: RCFGBuilder took 527.03ms. Allocated memory is still 163.6MB. Free memory was 130.5MB in the beginning and 116.9MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 03:51:38,516 INFO L158 Benchmark]: TraceAbstraction took 5843.86ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 115.8MB in the beginning and 126.0MB in the end (delta: -10.2MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2022-11-23 03:51:38,516 INFO L158 Benchmark]: Witness Printer took 52.04ms. Allocated memory is still 203.4MB. Free memory was 126.0MB in the beginning and 123.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:51:38,518 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 70.4MB in the beginning and 70.3MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 573.70ms. Allocated memory was 127.9MB in the beginning and 163.6MB in the end (delta: 35.7MB). Free memory was 81.4MB in the beginning and 131.1MB in the end (delta: -49.8MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.84ms. Allocated memory is still 163.6MB. Free memory was 131.1MB in the beginning and 132.6MB in the end (delta: -1.5MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.52ms. Allocated memory is still 163.6MB. Free memory was 132.6MB in the beginning and 130.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 527.03ms. Allocated memory is still 163.6MB. Free memory was 130.5MB in the beginning and 116.9MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5843.86ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 115.8MB in the beginning and 126.0MB in the end (delta: -10.2MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. * Witness Printer took 52.04ms. Allocated memory is still 203.4MB. Free memory was 126.0MB in the beginning and 123.9MB 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, 85 PlacesBefore, 27 PlacesAfterwards, 76 TransitionsBefore, 18 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 65 TotalNumberOfCompositions, 2220 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1398, independent: 1304, independent conditional: 0, independent unconditional: 1304, 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: 853, independent: 810, independent conditional: 0, independent unconditional: 810, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 853, independent: 801, independent conditional: 0, independent unconditional: 801, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 145, independent: 38, independent conditional: 0, independent unconditional: 38, dependent: 106, dependent conditional: 0, dependent unconditional: 106, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1398, independent: 494, independent conditional: 0, independent unconditional: 494, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 853, unknown conditional: 0, unknown unconditional: 853] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, 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, 116 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: 5.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 229 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 184 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 437 IncrementalHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 14 mSDtfsCounter, 437 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=5, InterpolantAutomatonStates: 35, 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, 1.2s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 275 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 03:51:38,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a3ac8e-74a6-4097-a6cd-ce1f8f56967c/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