./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-1.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_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/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_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/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_f93f22da-0f32-401a-9230-e154cabbfd40/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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- 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 03:46:48,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:46:48,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:46:48,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:46:48,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:46:48,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:46:48,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:46:48,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:46:48,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:46:48,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:46:48,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:46:48,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:46:48,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:46:48,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:46:48,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:46:48,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:46:48,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:46:48,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:46:48,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:46:48,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:46:48,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:46:48,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:46:48,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:46:48,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:46:48,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:46:48,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:46:48,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:46:48,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:46:48,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:46:48,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:46:48,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:46:48,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:46:48,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:46:48,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:46:48,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:46:48,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:46:48,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:46:48,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:46:48,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:46:48,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:46:48,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:46:48,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:46:48,650 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:46:48,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:46:48,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:46:48,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:46:48,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:46:48,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:46:48,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:46:48,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:46:48,657 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:46:48,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:46:48,658 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:46:48,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:46:48,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:46:48,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:46:48,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:46:48,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:46:48,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:46:48,660 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:46:48,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:46:48,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:46:48,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:46:48,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:46:48,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:46:48,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:46:48,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:46:48,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:46:48,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:46:48,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:46:48,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:46:48,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:46:48,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:46:48,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:46:48,664 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:46:48,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:46:48,664 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_f93f22da-0f32-401a-9230-e154cabbfd40/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2022-11-23 03:46:48,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:46:48,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:46:48,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:46:48,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:46:48,957 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:46:48,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread/triangular-longest-1.i [2022-11-23 03:46:52,111 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:46:52,379 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:46:52,379 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/sv-benchmarks/c/pthread/triangular-longest-1.i [2022-11-23 03:46:52,392 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/data/ccedc6272/4f05d140a878482a8f7b9c0c8e8d1f83/FLAG9e2c88f02 [2022-11-23 03:46:52,416 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/data/ccedc6272/4f05d140a878482a8f7b9c0c8e8d1f83 [2022-11-23 03:46:52,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:46:52,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:46:52,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:46:52,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:46:52,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:46:52,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:46:52" (1/1) ... [2022-11-23 03:46:52,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d2de7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:52, skipping insertion in model container [2022-11-23 03:46:52,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:46:52" (1/1) ... [2022-11-23 03:46:52,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:46:52,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:46:52,938 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_f93f22da-0f32-401a-9230-e154cabbfd40/sv-benchmarks/c/pthread/triangular-longest-1.i[30962,30975] [2022-11-23 03:46:52,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:46:52,955 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:46:53,020 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_f93f22da-0f32-401a-9230-e154cabbfd40/sv-benchmarks/c/pthread/triangular-longest-1.i[30962,30975] [2022-11-23 03:46:53,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:46:53,065 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:46:53,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:53 WrapperNode [2022-11-23 03:46:53,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:46:53,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:46:53,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:46:53,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:46:53,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:53" (1/1) ... [2022-11-23 03:46:53,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:53" (1/1) ... [2022-11-23 03:46:53,133 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-23 03:46:53,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:46:53,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:46:53,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:46:53,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:46:53,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:53" (1/1) ... [2022-11-23 03:46:53,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:53" (1/1) ... [2022-11-23 03:46:53,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:53" (1/1) ... [2022-11-23 03:46:53,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:53" (1/1) ... [2022-11-23 03:46:53,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:53" (1/1) ... [2022-11-23 03:46:53,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:53" (1/1) ... [2022-11-23 03:46:53,178 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:53" (1/1) ... [2022-11-23 03:46:53,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:53" (1/1) ... [2022-11-23 03:46:53,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:46:53,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:46:53,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:46:53,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:46:53,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:53" (1/1) ... [2022-11-23 03:46:53,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:46:53,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:46:53,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:46:53,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:46:53,278 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-23 03:46:53,278 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-23 03:46:53,278 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-23 03:46:53,278 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-23 03:46:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:46:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 03:46:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:46:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:46:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:46:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:46:53,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 03:46:53,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:46:53,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:46:53,281 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 03:46:53,468 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:46:53,484 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:46:53,660 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:46:53,666 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:46:53,666 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 03:46:53,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:46:53 BoogieIcfgContainer [2022-11-23 03:46:53,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:46:53,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:46:53,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:46:53,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:46:53,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:46:52" (1/3) ... [2022-11-23 03:46:53,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5457353b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:46:53, skipping insertion in model container [2022-11-23 03:46:53,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:53" (2/3) ... [2022-11-23 03:46:53,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5457353b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:46:53, skipping insertion in model container [2022-11-23 03:46:53,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:46:53" (3/3) ... [2022-11-23 03:46:53,691 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2022-11-23 03:46:53,700 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 03:46:53,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:46:53,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:46:53,713 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:46:53,782 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 03:46:53,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 150 flow [2022-11-23 03:46:53,906 INFO L130 PetriNetUnfolder]: 5/68 cut-off events. [2022-11-23 03:46:53,907 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:46:53,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-23 03:46:53,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 70 transitions, 150 flow [2022-11-23 03:46:53,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 142 flow [2022-11-23 03:46:53,920 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:46:53,939 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 68 transitions, 142 flow [2022-11-23 03:46:53,945 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 68 transitions, 142 flow [2022-11-23 03:46:53,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 68 transitions, 142 flow [2022-11-23 03:46:53,972 INFO L130 PetriNetUnfolder]: 5/68 cut-off events. [2022-11-23 03:46:53,973 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:46:53,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-23 03:46:53,975 INFO L119 LiptonReduction]: Number of co-enabled transitions 1122 [2022-11-23 03:46:56,755 INFO L134 LiptonReduction]: Checked pairs total: 1024 [2022-11-23 03:46:56,756 INFO L136 LiptonReduction]: Total number of compositions: 63 [2022-11-23 03:46:56,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:46:56,779 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;@33d0cb83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:46:56,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 03:46:56,784 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2022-11-23 03:46:56,785 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:46:56,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:46:56,786 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:46:56,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:46:56,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:46:56,791 INFO L85 PathProgramCache]: Analyzing trace with hash -425316771, now seen corresponding path program 1 times [2022-11-23 03:46:56,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:46:56,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063420158] [2022-11-23 03:46:56,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:46:56,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:46:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:46:57,299 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 03:46:57,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:46:57,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063420158] [2022-11-23 03:46:57,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063420158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:46:57,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:46:57,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:46:57,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022016260] [2022-11-23 03:46:57,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:46:57,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:46:57,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:46:57,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:46:57,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:46:57,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2022-11-23 03:46:57,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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 03:46:57,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:46:57,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2022-11-23 03:46:57,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:46:57,488 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2022-11-23 03:46:57,489 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 03:46:57,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 388 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2022-11-23 03:46:57,492 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2022-11-23 03:46:57,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2022-11-23 03:46:57,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:46:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:46:57,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 261 transitions. [2022-11-23 03:46:57,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4906015037593985 [2022-11-23 03:46:57,514 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 261 transitions. [2022-11-23 03:46:57,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 261 transitions. [2022-11-23 03:46:57,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:46:57,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 261 transitions. [2022-11-23 03:46:57,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 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 03:46:57,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 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 03:46:57,529 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 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 03:46:57,531 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 261 transitions. [2022-11-23 03:46:57,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2022-11-23 03:46:57,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:46:57,535 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2022-11-23 03:46:57,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2022-11-23 03:46:57,541 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2022-11-23 03:46:57,541 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2022-11-23 03:46:57,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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 03:46:57,542 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:46:57,542 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:46:57,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:46:57,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:46:57,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:46:57,543 INFO L85 PathProgramCache]: Analyzing trace with hash -707855405, now seen corresponding path program 1 times [2022-11-23 03:46:57,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:46:57,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205506722] [2022-11-23 03:46:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:46:57,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:46:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:46:57,682 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 03:46:57,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:46:57,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205506722] [2022-11-23 03:46:57,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205506722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:46:57,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:46:57,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:46:57,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320715511] [2022-11-23 03:46:57,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:46:57,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:46:57,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:46:57,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:46:57,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:46:57,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:46:57,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 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 03:46:57,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:46:57,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:46:57,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:46:57,869 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2022-11-23 03:46:57,869 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-11-23 03:46:57,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 659 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2022-11-23 03:46:57,872 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2022-11-23 03:46:57,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2022-11-23 03:46:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:46:57,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:46:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 380 transitions. [2022-11-23 03:46:57,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2022-11-23 03:46:57,884 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 380 transitions. [2022-11-23 03:46:57,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 380 transitions. [2022-11-23 03:46:57,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:46:57,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 380 transitions. [2022-11-23 03:46:57,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 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 03:46:57,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 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 03:46:57,890 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 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 03:46:57,890 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 380 transitions. [2022-11-23 03:46:57,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2022-11-23 03:46:57,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:46:57,900 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2022-11-23 03:46:57,900 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2022-11-23 03:46:57,901 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2022-11-23 03:46:57,901 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2022-11-23 03:46:57,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 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 03:46:57,902 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:46:57,902 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:46:57,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:46:57,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:46:57,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:46:57,907 INFO L85 PathProgramCache]: Analyzing trace with hash -707835875, now seen corresponding path program 2 times [2022-11-23 03:46:57,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:46:57,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694050434] [2022-11-23 03:46:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:46:57,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:46:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:46:58,082 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 03:46:58,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:46:58,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694050434] [2022-11-23 03:46:58,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694050434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:46:58,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:46:58,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:46:58,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923317200] [2022-11-23 03:46:58,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:46:58,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:46:58,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:46:58,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:46:58,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:46:58,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:46:58,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 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 03:46:58,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:46:58,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:46:58,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:46:58,227 INFO L130 PetriNetUnfolder]: 114/199 cut-off events. [2022-11-23 03:46:58,227 INFO L131 PetriNetUnfolder]: For 277/277 co-relation queries the response was YES. [2022-11-23 03:46:58,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 199 events. 114/199 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 635 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 636. Up to 84 conditions per place. [2022-11-23 03:46:58,238 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2022-11-23 03:46:58,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 284 flow [2022-11-23 03:46:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:46:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:46:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 318 transitions. [2022-11-23 03:46:58,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4781954887218045 [2022-11-23 03:46:58,242 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 318 transitions. [2022-11-23 03:46:58,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 318 transitions. [2022-11-23 03:46:58,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:46:58,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 318 transitions. [2022-11-23 03:46:58,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:46:58,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:46:58,252 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:46:58,253 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 5 states and 318 transitions. [2022-11-23 03:46:58,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 284 flow [2022-11-23 03:46:58,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-23 03:46:58,259 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 182 flow [2022-11-23 03:46:58,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2022-11-23 03:46:58,261 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2022-11-23 03:46:58,261 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 182 flow [2022-11-23 03:46:58,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 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 03:46:58,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:46:58,262 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:46:58,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:46:58,263 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:46:58,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:46:58,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1979304464, now seen corresponding path program 1 times [2022-11-23 03:46:58,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:46:58,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541246511] [2022-11-23 03:46:58,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:46:58,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:46:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:46:58,417 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 03:46:58,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:46:58,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541246511] [2022-11-23 03:46:58,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541246511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:46:58,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:46:58,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:46:58,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963074466] [2022-11-23 03:46:58,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:46:58,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:46:58,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:46:58,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:46:58,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:46:58,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:46:58,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 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 03:46:58,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:46:58,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:46:58,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:46:58,572 INFO L130 PetriNetUnfolder]: 136/239 cut-off events. [2022-11-23 03:46:58,573 INFO L131 PetriNetUnfolder]: For 567/567 co-relation queries the response was YES. [2022-11-23 03:46:58,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 239 events. 136/239 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 803 event pairs, 31 based on Foata normal form. 4/243 useless extension candidates. Maximal degree in co-relation 842. Up to 101 conditions per place. [2022-11-23 03:46:58,575 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 30 selfloop transitions, 16 changer transitions 8/54 dead transitions. [2022-11-23 03:46:58,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 419 flow [2022-11-23 03:46:58,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:46:58,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:46:58,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 440 transitions. [2022-11-23 03:46:58,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47261009667024706 [2022-11-23 03:46:58,579 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 440 transitions. [2022-11-23 03:46:58,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 440 transitions. [2022-11-23 03:46:58,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:46:58,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 440 transitions. [2022-11-23 03:46:58,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 62.857142857142854) internal successors, (440), 7 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:46:58,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 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 03:46:58,584 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 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 03:46:58,584 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 182 flow. Second operand 7 states and 440 transitions. [2022-11-23 03:46:58,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 419 flow [2022-11-23 03:46:58,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 379 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-11-23 03:46:58,589 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 269 flow [2022-11-23 03:46:58,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2022-11-23 03:46:58,590 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 22 predicate places. [2022-11-23 03:46:58,590 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 269 flow [2022-11-23 03:46:58,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 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 03:46:58,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:46:58,590 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:46:58,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:46:58,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:46:58,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:46:58,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1979266334, now seen corresponding path program 2 times [2022-11-23 03:46:58,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:46:58,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321567255] [2022-11-23 03:46:58,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:46:58,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:46:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:46:58,718 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 03:46:58,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:46:58,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321567255] [2022-11-23 03:46:58,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321567255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:46:58,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:46:58,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:46:58,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68565500] [2022-11-23 03:46:58,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:46:58,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:46:58,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:46:58,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:46:58,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:46:58,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:46:58,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 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 03:46:58,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:46:58,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:46:58,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:46:58,907 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2022-11-23 03:46:58,907 INFO L131 PetriNetUnfolder]: For 782/782 co-relation queries the response was YES. [2022-11-23 03:46:58,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 303 events. 172/303 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1055 event pairs, 22 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1127. Up to 79 conditions per place. [2022-11-23 03:46:58,911 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 38 selfloop transitions, 22 changer transitions 3/63 dead transitions. [2022-11-23 03:46:58,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 519 flow [2022-11-23 03:46:58,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:46:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-23 03:46:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 502 transitions. [2022-11-23 03:46:58,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4718045112781955 [2022-11-23 03:46:58,914 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 502 transitions. [2022-11-23 03:46:58,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 502 transitions. [2022-11-23 03:46:58,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:46:58,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 502 transitions. [2022-11-23 03:46:58,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 62.75) internal successors, (502), 8 states have internal predecessors, (502), 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 03:46:58,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 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 03:46:58,919 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 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 03:46:58,919 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 269 flow. Second operand 8 states and 502 transitions. [2022-11-23 03:46:58,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 519 flow [2022-11-23 03:46:58,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 495 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-23 03:46:58,925 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 375 flow [2022-11-23 03:46:58,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=375, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2022-11-23 03:46:58,928 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 32 predicate places. [2022-11-23 03:46:58,928 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 375 flow [2022-11-23 03:46:58,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 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 03:46:58,929 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:46:58,929 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:46:58,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:46:58,930 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:46:58,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:46:58,930 INFO L85 PathProgramCache]: Analyzing trace with hash -425050334, now seen corresponding path program 3 times [2022-11-23 03:46:58,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:46:58,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095686845] [2022-11-23 03:46:58,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:46:58,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:46:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:46:59,087 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 03:46:59,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:46:59,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095686845] [2022-11-23 03:46:59,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095686845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:46:59,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:46:59,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:46:59,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480620121] [2022-11-23 03:46:59,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:46:59,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:46:59,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:46:59,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:46:59,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:46:59,126 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:46:59,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 375 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 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 03:46:59,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:46:59,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:46:59,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:46:59,276 INFO L130 PetriNetUnfolder]: 160/283 cut-off events. [2022-11-23 03:46:59,277 INFO L131 PetriNetUnfolder]: For 1347/1347 co-relation queries the response was YES. [2022-11-23 03:46:59,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 283 events. 160/283 cut-off events. For 1347/1347 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 988 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1237. Up to 69 conditions per place. [2022-11-23 03:46:59,280 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 30 selfloop transitions, 22 changer transitions 8/60 dead transitions. [2022-11-23 03:46:59,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 601 flow [2022-11-23 03:46:59,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:46:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:46:59,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 439 transitions. [2022-11-23 03:46:59,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4715359828141783 [2022-11-23 03:46:59,283 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 439 transitions. [2022-11-23 03:46:59,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 439 transitions. [2022-11-23 03:46:59,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:46:59,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 439 transitions. [2022-11-23 03:46:59,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 62.714285714285715) internal successors, (439), 7 states have internal predecessors, (439), 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 03:46:59,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 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 03:46:59,289 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 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 03:46:59,289 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 375 flow. Second operand 7 states and 439 transitions. [2022-11-23 03:46:59,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 601 flow [2022-11-23 03:46:59,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 567 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-23 03:46:59,299 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 427 flow [2022-11-23 03:46:59,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2022-11-23 03:46:59,301 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 37 predicate places. [2022-11-23 03:46:59,301 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 427 flow [2022-11-23 03:46:59,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 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 03:46:59,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:46:59,302 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:46:59,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:46:59,303 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:46:59,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:46:59,307 INFO L85 PathProgramCache]: Analyzing trace with hash -291636505, now seen corresponding path program 4 times [2022-11-23 03:46:59,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:46:59,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928858936] [2022-11-23 03:46:59,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:46:59,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:46:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:46:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:46:59,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:46:59,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928858936] [2022-11-23 03:46:59,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928858936] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:46:59,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072115129] [2022-11-23 03:46:59,439 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:46:59,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:46:59,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:46:59,447 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:46:59,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:46:59,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:46:59,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:46:59,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 03:46:59,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:46:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:46:59,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:46:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:46:59,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072115129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:46:59,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:46:59,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-23 03:46:59,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095448465] [2022-11-23 03:46:59,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:46:59,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:46:59,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:46:59,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:46:59,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:46:59,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:46:59,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 427 flow. Second operand has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 12 states have internal predecessors, (707), 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 03:46:59,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:46:59,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:46:59,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:47:00,305 INFO L130 PetriNetUnfolder]: 208/363 cut-off events. [2022-11-23 03:47:00,305 INFO L131 PetriNetUnfolder]: For 2340/2340 co-relation queries the response was YES. [2022-11-23 03:47:00,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 363 events. 208/363 cut-off events. For 2340/2340 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1277 event pairs, 18 based on Foata normal form. 16/379 useless extension candidates. Maximal degree in co-relation 1713. Up to 90 conditions per place. [2022-11-23 03:47:00,309 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 34 selfloop transitions, 37 changer transitions 22/93 dead transitions. [2022-11-23 03:47:00,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 989 flow [2022-11-23 03:47:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:47:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-23 03:47:00,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 872 transitions. [2022-11-23 03:47:00,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4683136412459721 [2022-11-23 03:47:00,313 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 872 transitions. [2022-11-23 03:47:00,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 872 transitions. [2022-11-23 03:47:00,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:47:00,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 872 transitions. [2022-11-23 03:47:00,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 62.285714285714285) internal successors, (872), 14 states have internal predecessors, (872), 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 03:47:00,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 133.0) internal successors, (1995), 15 states have internal predecessors, (1995), 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 03:47:00,325 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 133.0) internal successors, (1995), 15 states have internal predecessors, (1995), 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 03:47:00,326 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 427 flow. Second operand 14 states and 872 transitions. [2022-11-23 03:47:00,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 989 flow [2022-11-23 03:47:00,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 93 transitions, 927 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-11-23 03:47:00,335 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 735 flow [2022-11-23 03:47:00,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=735, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2022-11-23 03:47:00,336 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 50 predicate places. [2022-11-23 03:47:00,337 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 735 flow [2022-11-23 03:47:00,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 12 states have internal predecessors, (707), 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 03:47:00,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:47:00,338 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:47:00,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:47:00,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 03:47:00,545 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:47:00,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:47:00,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1208167982, now seen corresponding path program 5 times [2022-11-23 03:47:00,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:47:00,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839280561] [2022-11-23 03:47:00,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:47:00,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:47:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:47:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:00,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:47:00,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839280561] [2022-11-23 03:47:00,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839280561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:47:00,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882150580] [2022-11-23 03:47:00,713 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:47:00,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:00,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:47:00,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:47:00,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:47:00,807 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-23 03:47:00,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:47:00,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 03:47:00,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:47:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:00,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:47:01,096 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:01,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882150580] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:47:01,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:47:01,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-23 03:47:01,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373081391] [2022-11-23 03:47:01,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:47:01,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 03:47:01,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:47:01,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 03:47:01,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:47:01,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:47:01,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 735 flow. Second operand has 16 states, 16 states have (on average 58.8125) internal successors, (941), 16 states have internal predecessors, (941), 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 03:47:01,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:47:01,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:47:01,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:47:01,496 INFO L130 PetriNetUnfolder]: 264/475 cut-off events. [2022-11-23 03:47:01,497 INFO L131 PetriNetUnfolder]: For 4861/4861 co-relation queries the response was YES. [2022-11-23 03:47:01,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2527 conditions, 475 events. 264/475 cut-off events. For 4861/4861 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1716 event pairs, 55 based on Foata normal form. 32/507 useless extension candidates. Maximal degree in co-relation 2491. Up to 249 conditions per place. [2022-11-23 03:47:01,501 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 65 selfloop transitions, 27 changer transitions 27/119 dead transitions. [2022-11-23 03:47:01,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 119 transitions, 1505 flow [2022-11-23 03:47:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 03:47:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 03:47:01,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 995 transitions. [2022-11-23 03:47:01,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4675751879699248 [2022-11-23 03:47:01,505 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 995 transitions. [2022-11-23 03:47:01,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 995 transitions. [2022-11-23 03:47:01,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:47:01,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 995 transitions. [2022-11-23 03:47:01,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 62.1875) internal successors, (995), 16 states have internal predecessors, (995), 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 03:47:01,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 133.0) internal successors, (2261), 17 states have internal predecessors, (2261), 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 03:47:01,514 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 133.0) internal successors, (2261), 17 states have internal predecessors, (2261), 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 03:47:01,514 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 735 flow. Second operand 16 states and 995 transitions. [2022-11-23 03:47:01,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 119 transitions, 1505 flow [2022-11-23 03:47:01,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 119 transitions, 1144 flow, removed 167 selfloop flow, removed 5 redundant places. [2022-11-23 03:47:01,531 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 813 flow [2022-11-23 03:47:01,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=813, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2022-11-23 03:47:01,532 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 70 predicate places. [2022-11-23 03:47:01,532 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 813 flow [2022-11-23 03:47:01,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.8125) internal successors, (941), 16 states have internal predecessors, (941), 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 03:47:01,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:47:01,533 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:47:01,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:47:01,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:01,739 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:47:01,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:47:01,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1989738532, now seen corresponding path program 6 times [2022-11-23 03:47:01,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:47:01,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050098805] [2022-11-23 03:47:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:47:01,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:47:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:47:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:01,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:47:01,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050098805] [2022-11-23 03:47:01,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050098805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:47:01,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130583491] [2022-11-23 03:47:01,904 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 03:47:01,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:01,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:47:01,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:47:01,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:47:01,991 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-23 03:47:01,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:47:01,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 03:47:01,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:47:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:02,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:47:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:02,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130583491] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:47:02,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:47:02,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-23 03:47:02,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515525923] [2022-11-23 03:47:02,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:47:02,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 03:47:02,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:47:02,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 03:47:02,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:47:02,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:47:02,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 813 flow. Second operand has 17 states, 17 states have (on average 58.8235294117647) internal successors, (1000), 17 states have internal predecessors, (1000), 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 03:47:02,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:47:02,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:47:02,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:47:02,968 INFO L130 PetriNetUnfolder]: 418/767 cut-off events. [2022-11-23 03:47:02,968 INFO L131 PetriNetUnfolder]: For 12977/12977 co-relation queries the response was YES. [2022-11-23 03:47:02,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4114 conditions, 767 events. 418/767 cut-off events. For 12977/12977 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3430 event pairs, 44 based on Foata normal form. 32/799 useless extension candidates. Maximal degree in co-relation 4069. Up to 230 conditions per place. [2022-11-23 03:47:02,974 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 73 selfloop transitions, 73 changer transitions 37/183 dead transitions. [2022-11-23 03:47:02,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 183 transitions, 2135 flow [2022-11-23 03:47:02,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 03:47:02,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-23 03:47:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1368 transitions. [2022-11-23 03:47:02,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2022-11-23 03:47:02,980 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1368 transitions. [2022-11-23 03:47:02,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1368 transitions. [2022-11-23 03:47:02,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:47:02,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1368 transitions. [2022-11-23 03:47:02,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 62.18181818181818) internal successors, (1368), 22 states have internal predecessors, (1368), 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 03:47:02,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 133.0) internal successors, (3059), 23 states have internal predecessors, (3059), 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 03:47:02,990 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 133.0) internal successors, (3059), 23 states have internal predecessors, (3059), 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 03:47:02,990 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 813 flow. Second operand 22 states and 1368 transitions. [2022-11-23 03:47:02,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 183 transitions, 2135 flow [2022-11-23 03:47:03,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 183 transitions, 2040 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-11-23 03:47:03,021 INFO L231 Difference]: Finished difference. Result has 119 places, 109 transitions, 1544 flow [2022-11-23 03:47:03,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1544, PETRI_PLACES=119, PETRI_TRANSITIONS=109} [2022-11-23 03:47:03,022 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 101 predicate places. [2022-11-23 03:47:03,022 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 109 transitions, 1544 flow [2022-11-23 03:47:03,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.8235294117647) internal successors, (1000), 17 states have internal predecessors, (1000), 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 03:47:03,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:47:03,023 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:47:03,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:47:03,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:03,231 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:47:03,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:47:03,232 INFO L85 PathProgramCache]: Analyzing trace with hash 870285422, now seen corresponding path program 7 times [2022-11-23 03:47:03,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:47:03,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967357772] [2022-11-23 03:47:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:47:03,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:47:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:47:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:03,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:47:03,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967357772] [2022-11-23 03:47:03,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967357772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:47:03,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802983741] [2022-11-23 03:47:03,376 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 03:47:03,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:03,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:47:03,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:47:03,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:47:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:47:03,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 03:47:03,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:47:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:03,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:47:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:03,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802983741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:47:03,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:47:03,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-23 03:47:03,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482406592] [2022-11-23 03:47:03,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:47:03,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 03:47:03,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:47:03,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 03:47:03,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:47:03,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:47:03,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 109 transitions, 1544 flow. Second operand has 17 states, 17 states have (on average 58.76470588235294) internal successors, (999), 17 states have internal predecessors, (999), 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 03:47:03,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:47:03,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:47:03,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:47:04,558 INFO L130 PetriNetUnfolder]: 582/1047 cut-off events. [2022-11-23 03:47:04,559 INFO L131 PetriNetUnfolder]: For 34821/34821 co-relation queries the response was YES. [2022-11-23 03:47:04,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7375 conditions, 1047 events. 582/1047 cut-off events. For 34821/34821 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4910 event pairs, 20 based on Foata normal form. 32/1079 useless extension candidates. Maximal degree in co-relation 7315. Up to 330 conditions per place. [2022-11-23 03:47:04,570 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 61 selfloop transitions, 129 changer transitions 48/238 dead transitions. [2022-11-23 03:47:04,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 238 transitions, 3696 flow [2022-11-23 03:47:04,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 03:47:04,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-23 03:47:04,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1679 transitions. [2022-11-23 03:47:04,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.467557783347257 [2022-11-23 03:47:04,577 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1679 transitions. [2022-11-23 03:47:04,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1679 transitions. [2022-11-23 03:47:04,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:47:04,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1679 transitions. [2022-11-23 03:47:04,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 62.18518518518518) internal successors, (1679), 27 states have internal predecessors, (1679), 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 03:47:04,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 133.0) internal successors, (3724), 28 states have internal predecessors, (3724), 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 03:47:04,593 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 133.0) internal successors, (3724), 28 states have internal predecessors, (3724), 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 03:47:04,593 INFO L175 Difference]: Start difference. First operand has 119 places, 109 transitions, 1544 flow. Second operand 27 states and 1679 transitions. [2022-11-23 03:47:04,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 238 transitions, 3696 flow [2022-11-23 03:47:04,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 238 transitions, 3378 flow, removed 149 selfloop flow, removed 4 redundant places. [2022-11-23 03:47:04,680 INFO L231 Difference]: Finished difference. Result has 156 places, 151 transitions, 2545 flow [2022-11-23 03:47:04,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2545, PETRI_PLACES=156, PETRI_TRANSITIONS=151} [2022-11-23 03:47:04,681 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 138 predicate places. [2022-11-23 03:47:04,681 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 151 transitions, 2545 flow [2022-11-23 03:47:04,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.76470588235294) internal successors, (999), 17 states have internal predecessors, (999), 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 03:47:04,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:47:04,682 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:47:04,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:47:04,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 03:47:04,888 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:47:04,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:47:04,889 INFO L85 PathProgramCache]: Analyzing trace with hash -248661501, now seen corresponding path program 8 times [2022-11-23 03:47:04,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:47:04,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616061590] [2022-11-23 03:47:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:47:04,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:47:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:47:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:47:05,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:47:05,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616061590] [2022-11-23 03:47:05,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616061590] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:47:05,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172009732] [2022-11-23 03:47:05,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:47:05,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:05,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:47:05,097 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:47:05,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:47:05,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:47:05,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:47:05,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 03:47:05,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:47:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:47:05,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:47:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:47:05,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172009732] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:47:05,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:47:05,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-23 03:47:05,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102522615] [2022-11-23 03:47:05,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:47:05,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 03:47:05,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:47:05,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 03:47:05,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2022-11-23 03:47:05,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:47:05,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 151 transitions, 2545 flow. Second operand has 25 states, 25 states have (on average 58.44) internal successors, (1461), 25 states have internal predecessors, (1461), 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 03:47:05,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:47:05,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:47:05,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:47:06,930 INFO L130 PetriNetUnfolder]: 814/1447 cut-off events. [2022-11-23 03:47:06,930 INFO L131 PetriNetUnfolder]: For 82971/82971 co-relation queries the response was YES. [2022-11-23 03:47:06,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13290 conditions, 1447 events. 814/1447 cut-off events. For 82971/82971 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6652 event pairs, 18 based on Foata normal form. 40/1487 useless extension candidates. Maximal degree in co-relation 13216. Up to 485 conditions per place. [2022-11-23 03:47:06,949 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 71 selfloop transitions, 186 changer transitions 74/331 dead transitions. [2022-11-23 03:47:06,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 331 transitions, 6878 flow [2022-11-23 03:47:06,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-23 03:47:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-23 03:47:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2481 transitions. [2022-11-23 03:47:07,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46635338345864663 [2022-11-23 03:47:07,000 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2481 transitions. [2022-11-23 03:47:07,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2481 transitions. [2022-11-23 03:47:07,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:47:07,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2481 transitions. [2022-11-23 03:47:07,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 62.025) internal successors, (2481), 40 states have internal predecessors, (2481), 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 03:47:07,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 133.0) internal successors, (5453), 41 states have internal predecessors, (5453), 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 03:47:07,021 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 133.0) internal successors, (5453), 41 states have internal predecessors, (5453), 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 03:47:07,022 INFO L175 Difference]: Start difference. First operand has 156 places, 151 transitions, 2545 flow. Second operand 40 states and 2481 transitions. [2022-11-23 03:47:07,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 331 transitions, 6878 flow [2022-11-23 03:47:07,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 331 transitions, 5347 flow, removed 740 selfloop flow, removed 10 redundant places. [2022-11-23 03:47:07,189 INFO L231 Difference]: Finished difference. Result has 205 places, 212 transitions, 3758 flow [2022-11-23 03:47:07,190 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=1966, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3758, PETRI_PLACES=205, PETRI_TRANSITIONS=212} [2022-11-23 03:47:07,190 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 187 predicate places. [2022-11-23 03:47:07,190 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 212 transitions, 3758 flow [2022-11-23 03:47:07,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 58.44) internal successors, (1461), 25 states have internal predecessors, (1461), 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 03:47:07,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:47:07,191 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:47:07,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 03:47:07,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 03:47:07,407 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:47:07,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:47:07,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1245384494, now seen corresponding path program 9 times [2022-11-23 03:47:07,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:47:07,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146042425] [2022-11-23 03:47:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:47:07,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:47:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:47:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:07,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:47:07,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146042425] [2022-11-23 03:47:07,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146042425] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:47:07,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199102513] [2022-11-23 03:47:07,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:47:07,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:07,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:47:07,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:47:07,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 03:47:08,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-23 03:47:08,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:47:08,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 03:47:08,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:47:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:08,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:47:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:08,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199102513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:47:08,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:47:08,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2022-11-23 03:47:08,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61590419] [2022-11-23 03:47:08,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:47:08,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-23 03:47:08,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:47:08,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-23 03:47:08,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 03:47:08,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:47:08,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 212 transitions, 3758 flow. Second operand has 40 states, 40 states have (on average 58.3) internal successors, (2332), 40 states have internal predecessors, (2332), 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 03:47:08,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:47:08,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:47:08,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:47:10,534 INFO L130 PetriNetUnfolder]: 934/1687 cut-off events. [2022-11-23 03:47:10,534 INFO L131 PetriNetUnfolder]: For 143756/143756 co-relation queries the response was YES. [2022-11-23 03:47:10,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17535 conditions, 1687 events. 934/1687 cut-off events. For 143756/143756 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7630 event pairs, 263 based on Foata normal form. 80/1767 useless extension candidates. Maximal degree in co-relation 17442. Up to 1189 conditions per place. [2022-11-23 03:47:10,557 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 227 selfloop transitions, 61 changer transitions 75/363 dead transitions. [2022-11-23 03:47:10,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 363 transitions, 8346 flow [2022-11-23 03:47:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-23 03:47:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-23 03:47:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2471 transitions. [2022-11-23 03:47:10,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4644736842105263 [2022-11-23 03:47:10,562 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2471 transitions. [2022-11-23 03:47:10,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2471 transitions. [2022-11-23 03:47:10,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:47:10,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2471 transitions. [2022-11-23 03:47:10,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 61.775) internal successors, (2471), 40 states have internal predecessors, (2471), 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 03:47:10,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 133.0) internal successors, (5453), 41 states have internal predecessors, (5453), 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 03:47:10,663 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 133.0) internal successors, (5453), 41 states have internal predecessors, (5453), 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 03:47:10,663 INFO L175 Difference]: Start difference. First operand has 205 places, 212 transitions, 3758 flow. Second operand 40 states and 2471 transitions. [2022-11-23 03:47:10,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 363 transitions, 8346 flow [2022-11-23 03:47:10,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 363 transitions, 7059 flow, removed 614 selfloop flow, removed 8 redundant places. [2022-11-23 03:47:10,984 INFO L231 Difference]: Finished difference. Result has 258 places, 242 transitions, 4468 flow [2022-11-23 03:47:10,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4468, PETRI_PLACES=258, PETRI_TRANSITIONS=242} [2022-11-23 03:47:10,985 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 240 predicate places. [2022-11-23 03:47:10,986 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 242 transitions, 4468 flow [2022-11-23 03:47:10,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 58.3) internal successors, (2332), 40 states have internal predecessors, (2332), 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 03:47:10,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:47:10,987 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:47:10,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 03:47:11,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:11,190 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:47:11,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:47:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1804050468, now seen corresponding path program 10 times [2022-11-23 03:47:11,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:47:11,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411244730] [2022-11-23 03:47:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:47:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:47:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:47:11,625 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:11,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:47:11,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411244730] [2022-11-23 03:47:11,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411244730] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:47:11,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285524978] [2022-11-23 03:47:11,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:47:11,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:11,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:47:11,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:47:11,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 03:47:11,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:47:11,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:47:11,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 03:47:11,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:47:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:11,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:47:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:12,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285524978] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:47:12,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:47:12,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2022-11-23 03:47:12,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574306209] [2022-11-23 03:47:12,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:47:12,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-23 03:47:12,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:47:12,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-23 03:47:12,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1274, Unknown=0, NotChecked=0, Total=1640 [2022-11-23 03:47:12,628 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:47:12,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 242 transitions, 4468 flow. Second operand has 41 states, 41 states have (on average 58.31707317073171) internal successors, (2391), 41 states have internal predecessors, (2391), 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 03:47:12,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:47:12,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:47:12,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:47:14,739 INFO L130 PetriNetUnfolder]: 1214/2247 cut-off events. [2022-11-23 03:47:14,739 INFO L131 PetriNetUnfolder]: For 366900/366900 co-relation queries the response was YES. [2022-11-23 03:47:14,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27409 conditions, 2247 events. 1214/2247 cut-off events. For 366900/366900 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10907 event pairs, 164 based on Foata normal form. 80/2327 useless extension candidates. Maximal degree in co-relation 27294. Up to 881 conditions per place. [2022-11-23 03:47:14,782 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 188 selfloop transitions, 186 changer transitions 87/461 dead transitions. [2022-11-23 03:47:14,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 461 transitions, 10707 flow [2022-11-23 03:47:14,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-23 03:47:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-23 03:47:14,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2844 transitions. [2022-11-23 03:47:14,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46485779666557697 [2022-11-23 03:47:14,790 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2844 transitions. [2022-11-23 03:47:14,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2844 transitions. [2022-11-23 03:47:14,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:47:14,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2844 transitions. [2022-11-23 03:47:14,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 61.82608695652174) internal successors, (2844), 46 states have internal predecessors, (2844), 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 03:47:14,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 133.0) internal successors, (6251), 47 states have internal predecessors, (6251), 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 03:47:14,818 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 133.0) internal successors, (6251), 47 states have internal predecessors, (6251), 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 03:47:14,818 INFO L175 Difference]: Start difference. First operand has 258 places, 242 transitions, 4468 flow. Second operand 46 states and 2844 transitions. [2022-11-23 03:47:14,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 461 transitions, 10707 flow [2022-11-23 03:47:15,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 461 transitions, 9568 flow, removed 542 selfloop flow, removed 14 redundant places. [2022-11-23 03:47:15,733 INFO L231 Difference]: Finished difference. Result has 309 places, 311 transitions, 6190 flow [2022-11-23 03:47:15,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=3329, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6190, PETRI_PLACES=309, PETRI_TRANSITIONS=311} [2022-11-23 03:47:15,734 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 291 predicate places. [2022-11-23 03:47:15,735 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 311 transitions, 6190 flow [2022-11-23 03:47:15,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 58.31707317073171) internal successors, (2391), 41 states have internal predecessors, (2391), 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 03:47:15,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:47:15,736 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:47:15,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 03:47:15,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:15,937 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:47:15,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:47:15,938 INFO L85 PathProgramCache]: Analyzing trace with hash -605885140, now seen corresponding path program 11 times [2022-11-23 03:47:15,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:47:15,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305278056] [2022-11-23 03:47:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:47:15,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:47:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:47:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:16,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:47:16,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305278056] [2022-11-23 03:47:16,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305278056] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:47:16,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906046467] [2022-11-23 03:47:16,369 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:47:16,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:16,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:47:16,371 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:47:16,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 03:47:16,481 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-23 03:47:16,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:47:16,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 03:47:16,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:47:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:16,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:47:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:17,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906046467] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:47:17,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:47:17,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2022-11-23 03:47:17,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024525477] [2022-11-23 03:47:17,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:47:17,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-23 03:47:17,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:47:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-23 03:47:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1340, Unknown=0, NotChecked=0, Total=1640 [2022-11-23 03:47:17,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:47:17,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 311 transitions, 6190 flow. Second operand has 41 states, 41 states have (on average 58.31707317073171) internal successors, (2391), 41 states have internal predecessors, (2391), 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 03:47:17,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:47:17,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:47:17,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:47:20,242 INFO L130 PetriNetUnfolder]: 1662/3135 cut-off events. [2022-11-23 03:47:20,242 INFO L131 PetriNetUnfolder]: For 837661/837661 co-relation queries the response was YES. [2022-11-23 03:47:20,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46607 conditions, 3135 events. 1662/3135 cut-off events. For 837661/837661 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16936 event pairs, 56 based on Foata normal form. 80/3215 useless extension candidates. Maximal degree in co-relation 46471. Up to 1313 conditions per place. [2022-11-23 03:47:20,300 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 120 selfloop transitions, 376 changer transitions 103/599 dead transitions. [2022-11-23 03:47:20,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 599 transitions, 15987 flow [2022-11-23 03:47:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-23 03:47:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-11-23 03:47:20,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 3339 transitions. [2022-11-23 03:47:20,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2022-11-23 03:47:20,308 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 3339 transitions. [2022-11-23 03:47:20,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 3339 transitions. [2022-11-23 03:47:20,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:47:20,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 3339 transitions. [2022-11-23 03:47:20,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 61.833333333333336) internal successors, (3339), 54 states have internal predecessors, (3339), 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 03:47:20,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 133.0) internal successors, (7315), 55 states have internal predecessors, (7315), 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 03:47:20,331 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 133.0) internal successors, (7315), 55 states have internal predecessors, (7315), 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 03:47:20,331 INFO L175 Difference]: Start difference. First operand has 309 places, 311 transitions, 6190 flow. Second operand 54 states and 3339 transitions. [2022-11-23 03:47:20,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 599 transitions, 15987 flow [2022-11-23 03:47:22,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 599 transitions, 14029 flow, removed 938 selfloop flow, removed 14 redundant places. [2022-11-23 03:47:22,131 INFO L231 Difference]: Finished difference. Result has 373 places, 425 transitions, 9373 flow [2022-11-23 03:47:22,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=4660, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=9373, PETRI_PLACES=373, PETRI_TRANSITIONS=425} [2022-11-23 03:47:22,132 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 355 predicate places. [2022-11-23 03:47:22,133 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 425 transitions, 9373 flow [2022-11-23 03:47:22,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 58.31707317073171) internal successors, (2391), 41 states have internal predecessors, (2391), 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 03:47:22,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:47:22,134 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:47:22,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 03:47:22,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 03:47:22,334 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:47:22,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:47:22,335 INFO L85 PathProgramCache]: Analyzing trace with hash -945966292, now seen corresponding path program 12 times [2022-11-23 03:47:22,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:47:22,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958100697] [2022-11-23 03:47:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:47:22,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:47:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:47:22,705 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:22,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:47:22,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958100697] [2022-11-23 03:47:22,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958100697] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:47:22,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442440530] [2022-11-23 03:47:22,706 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 03:47:22,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:22,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:47:22,707 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:47:22,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 03:47:22,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-11-23 03:47:22,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:47:22,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 03:47:22,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:47:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:22,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:47:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:47:23,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442440530] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:47:23,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:47:23,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2022-11-23 03:47:23,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040613236] [2022-11-23 03:47:23,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:47:23,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-23 03:47:23,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:47:23,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-23 03:47:23,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1255, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 03:47:23,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:47:23,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 425 transitions, 9373 flow. Second operand has 40 states, 40 states have (on average 58.3) internal successors, (2332), 40 states have internal predecessors, (2332), 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 03:47:23,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:47:23,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:47:23,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:47:27,077 INFO L130 PetriNetUnfolder]: 2210/4115 cut-off events. [2022-11-23 03:47:27,078 INFO L131 PetriNetUnfolder]: For 1681410/1681410 co-relation queries the response was YES. [2022-11-23 03:47:27,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74733 conditions, 4115 events. 2210/4115 cut-off events. For 1681410/1681410 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 23317 event pairs, 29 based on Foata normal form. 80/4195 useless extension candidates. Maximal degree in co-relation 74571. Up to 1745 conditions per place. [2022-11-23 03:47:27,133 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 121 selfloop transitions, 534 changer transitions 113/768 dead transitions. [2022-11-23 03:47:27,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 768 transitions, 24588 flow [2022-11-23 03:47:27,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-23 03:47:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-11-23 03:47:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 4146 transitions. [2022-11-23 03:47:27,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4652676467287622 [2022-11-23 03:47:27,140 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 4146 transitions. [2022-11-23 03:47:27,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 4146 transitions. [2022-11-23 03:47:27,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:47:27,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 4146 transitions. [2022-11-23 03:47:27,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 61.88059701492537) internal successors, (4146), 67 states have internal predecessors, (4146), 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 03:47:27,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 133.0) internal successors, (9044), 68 states have internal predecessors, (9044), 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 03:47:27,162 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 133.0) internal successors, (9044), 68 states have internal predecessors, (9044), 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 03:47:27,162 INFO L175 Difference]: Start difference. First operand has 373 places, 425 transitions, 9373 flow. Second operand 67 states and 4146 transitions. [2022-11-23 03:47:27,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 768 transitions, 24588 flow [2022-11-23 03:47:30,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 768 transitions, 19184 flow, removed 2603 selfloop flow, removed 19 redundant places. [2022-11-23 03:47:30,655 INFO L231 Difference]: Finished difference. Result has 454 places, 561 transitions, 13079 flow [2022-11-23 03:47:30,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=6731, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=13079, PETRI_PLACES=454, PETRI_TRANSITIONS=561} [2022-11-23 03:47:30,656 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 436 predicate places. [2022-11-23 03:47:30,657 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 561 transitions, 13079 flow [2022-11-23 03:47:30,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 58.3) internal successors, (2332), 40 states have internal predecessors, (2332), 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 03:47:30,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:47:30,658 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:47:30,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 03:47:30,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 03:47:30,864 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:47:30,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:47:30,864 INFO L85 PathProgramCache]: Analyzing trace with hash 628137944, now seen corresponding path program 13 times [2022-11-23 03:47:30,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:47:30,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981436460] [2022-11-23 03:47:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:47:30,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:47:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:47:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:47:31,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:47:31,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981436460] [2022-11-23 03:47:31,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981436460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:47:31,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069090274] [2022-11-23 03:47:31,356 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 03:47:31,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:31,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:47:31,359 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:47:31,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 03:47:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:47:31,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-23 03:47:31,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:47:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:47:31,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:47:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:47:32,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069090274] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:47:32,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:47:32,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 44 [2022-11-23 03:47:32,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279706344] [2022-11-23 03:47:32,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:47:32,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-23 03:47:32,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:47:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-23 03:47:32,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=1571, Unknown=0, NotChecked=0, Total=2070 [2022-11-23 03:47:32,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:47:32,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 561 transitions, 13079 flow. Second operand has 46 states, 46 states have (on average 58.26086956521739) internal successors, (2680), 46 states have internal predecessors, (2680), 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 03:47:32,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:47:32,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:47:32,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:47:38,289 INFO L130 PetriNetUnfolder]: 2694/4995 cut-off events. [2022-11-23 03:47:38,290 INFO L131 PetriNetUnfolder]: For 2337439/2337439 co-relation queries the response was YES. [2022-11-23 03:47:38,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102537 conditions, 4995 events. 2694/4995 cut-off events. For 2337439/2337439 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 28173 event pairs, 12 based on Foata normal form. 84/5079 useless extension candidates. Maximal degree in co-relation 102340. Up to 2117 conditions per place. [2022-11-23 03:47:38,450 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 124 selfloop transitions, 660 changer transitions 164/948 dead transitions. [2022-11-23 03:47:38,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 948 transitions, 36571 flow [2022-11-23 03:47:38,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-11-23 03:47:38,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2022-11-23 03:47:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 5258 transitions. [2022-11-23 03:47:38,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46510393631136665 [2022-11-23 03:47:38,464 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 5258 transitions. [2022-11-23 03:47:38,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 5258 transitions. [2022-11-23 03:47:38,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:47:38,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 5258 transitions. [2022-11-23 03:47:38,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 61.858823529411765) internal successors, (5258), 85 states have internal predecessors, (5258), 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 03:47:38,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 133.0) internal successors, (11438), 86 states have internal predecessors, (11438), 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 03:47:38,495 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 133.0) internal successors, (11438), 86 states have internal predecessors, (11438), 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 03:47:38,495 INFO L175 Difference]: Start difference. First operand has 454 places, 561 transitions, 13079 flow. Second operand 85 states and 5258 transitions. [2022-11-23 03:47:38,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 948 transitions, 36571 flow [2022-11-23 03:47:43,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 948 transitions, 27823 flow, removed 4181 selfloop flow, removed 27 redundant places. [2022-11-23 03:47:43,818 INFO L231 Difference]: Finished difference. Result has 549 places, 690 transitions, 16973 flow [2022-11-23 03:47:43,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=9101, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=532, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=16973, PETRI_PLACES=549, PETRI_TRANSITIONS=690} [2022-11-23 03:47:43,819 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 531 predicate places. [2022-11-23 03:47:43,820 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 690 transitions, 16973 flow [2022-11-23 03:47:43,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 58.26086956521739) internal successors, (2680), 46 states have internal predecessors, (2680), 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 03:47:43,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:47:43,820 INFO L209 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:47:43,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 03:47:44,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 03:47:44,023 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:47:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:47:44,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1277340746, now seen corresponding path program 14 times [2022-11-23 03:47:44,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:47:44,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835516202] [2022-11-23 03:47:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:47:44,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:47:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:47:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:47:45,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:47:45,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835516202] [2022-11-23 03:47:45,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835516202] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:47:45,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858443266] [2022-11-23 03:47:45,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:47:45,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:47:45,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:47:45,125 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:47:45,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 03:47:45,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:47:45,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:47:45,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-23 03:47:45,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:47:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:47:45,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:47:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:47:46,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858443266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:47:46,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:47:46,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 85 [2022-11-23 03:47:46,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992907022] [2022-11-23 03:47:46,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:47:46,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-11-23 03:47:46,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:47:46,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-11-23 03:47:46,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1745, Invalid=5737, Unknown=0, NotChecked=0, Total=7482 [2022-11-23 03:47:46,712 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-23 03:47:46,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 690 transitions, 16973 flow. Second operand has 87 states, 87 states have (on average 58.12643678160919) internal successors, (5057), 87 states have internal predecessors, (5057), 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 03:47:46,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:47:46,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-23 03:47:46,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:47:54,218 INFO L130 PetriNetUnfolder]: 2902/5343 cut-off events. [2022-11-23 03:47:54,218 INFO L131 PetriNetUnfolder]: For 3584176/3584176 co-relation queries the response was YES. [2022-11-23 03:47:54,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125283 conditions, 5343 events. 2902/5343 cut-off events. For 3584176/3584176 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 29850 event pairs, 28 based on Foata normal form. 12/5355 useless extension candidates. Maximal degree in co-relation 125049. Up to 2233 conditions per place. [2022-11-23 03:47:54,364 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 135 selfloop transitions, 708 changer transitions 170/1013 dead transitions. [2022-11-23 03:47:54,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 1013 transitions, 38348 flow [2022-11-23 03:47:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-23 03:47:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-11-23 03:47:54,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 5426 transitions. [2022-11-23 03:47:54,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4636021872863978 [2022-11-23 03:47:54,377 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 5426 transitions. [2022-11-23 03:47:54,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 5426 transitions. [2022-11-23 03:47:54,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:47:54,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 5426 transitions. [2022-11-23 03:47:54,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 61.65909090909091) internal successors, (5426), 88 states have internal predecessors, (5426), 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 03:47:54,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 133.0) internal successors, (11837), 89 states have internal predecessors, (11837), 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 03:47:54,584 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 133.0) internal successors, (11837), 89 states have internal predecessors, (11837), 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 03:47:54,584 INFO L175 Difference]: Start difference. First operand has 549 places, 690 transitions, 16973 flow. Second operand 88 states and 5426 transitions. [2022-11-23 03:47:54,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 1013 transitions, 38348 flow [2022-11-23 03:48:05,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 1013 transitions, 29217 flow, removed 4423 selfloop flow, removed 20 redundant places. [2022-11-23 03:48:06,009 INFO L231 Difference]: Finished difference. Result has 624 places, 742 transitions, 14782 flow [2022-11-23 03:48:06,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=11704, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=657, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=14782, PETRI_PLACES=624, PETRI_TRANSITIONS=742} [2022-11-23 03:48:06,011 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 606 predicate places. [2022-11-23 03:48:06,011 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 742 transitions, 14782 flow [2022-11-23 03:48:06,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 58.12643678160919) internal successors, (5057), 87 states have internal predecessors, (5057), 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 03:48:06,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:48:06,013 INFO L209 CegarLoopForPetriNet]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:48:06,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-23 03:48:06,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 03:48:06,219 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:48:06,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:48:06,220 INFO L85 PathProgramCache]: Analyzing trace with hash -738445277, now seen corresponding path program 15 times [2022-11-23 03:48:06,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:48:06,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316292243] [2022-11-23 03:48:06,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:48:06,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:48:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:48:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 380 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:48:06,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:48:06,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316292243] [2022-11-23 03:48:06,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316292243] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:48:06,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29155868] [2022-11-23 03:48:06,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:48:06,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:48:06,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:48:06,769 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:48:06,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 03:48:06,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-11-23 03:48:06,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:48:06,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 03:48:06,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:48:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:48:07,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:48:07,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29155868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:48:07,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:48:07,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2022-11-23 03:48:07,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418849843] [2022-11-23 03:48:07,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:48:07,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 03:48:07,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:48:07,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 03:48:07,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2022-11-23 03:48:07,118 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 133 [2022-11-23 03:48:07,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 742 transitions, 14782 flow. Second operand has 23 states, 23 states have (on average 62.130434782608695) internal successors, (1429), 23 states have internal predecessors, (1429), 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 03:48:07,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:48:07,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 133 [2022-11-23 03:48:07,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:48:37,892 INFO L130 PetriNetUnfolder]: 30995/46899 cut-off events. [2022-11-23 03:48:37,892 INFO L131 PetriNetUnfolder]: For 33989047/33989047 co-relation queries the response was YES. [2022-11-23 03:48:38,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029563 conditions, 46899 events. 30995/46899 cut-off events. For 33989047/33989047 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 305177 event pairs, 219 based on Foata normal form. 1184/48083 useless extension candidates. Maximal degree in co-relation 1029320. Up to 19212 conditions per place. [2022-11-23 03:48:39,062 INFO L137 encePairwiseOnDemand]: 130/133 looper letters, 0 selfloop transitions, 0 changer transitions 8756/8756 dead transitions. [2022-11-23 03:48:39,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 8756 transitions, 182593 flow [2022-11-23 03:48:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 03:48:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-23 03:48:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1557 transitions. [2022-11-23 03:48:39,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.508989865969271 [2022-11-23 03:48:39,065 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1557 transitions. [2022-11-23 03:48:39,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1557 transitions. [2022-11-23 03:48:39,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:48:39,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1557 transitions. [2022-11-23 03:48:39,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 67.69565217391305) internal successors, (1557), 23 states have internal predecessors, (1557), 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 03:48:39,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 133.0) internal successors, (3192), 24 states have internal predecessors, (3192), 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 03:48:39,072 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 133.0) internal successors, (3192), 24 states have internal predecessors, (3192), 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 03:48:39,072 INFO L175 Difference]: Start difference. First operand has 624 places, 742 transitions, 14782 flow. Second operand 23 states and 1557 transitions. [2022-11-23 03:48:39,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 8756 transitions, 182593 flow [2022-11-23 03:50:18,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 8756 transitions, 170321 flow, removed 744 selfloop flow, removed 53 redundant places. [2022-11-23 03:50:18,607 INFO L231 Difference]: Finished difference. Result has 592 places, 0 transitions, 0 flow [2022-11-23 03:50:18,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=12583, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=732, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=592, PETRI_TRANSITIONS=0} [2022-11-23 03:50:18,608 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 574 predicate places. [2022-11-23 03:50:18,608 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 0 transitions, 0 flow [2022-11-23 03:50:18,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 62.130434782608695) internal successors, (1429), 23 states have internal predecessors, (1429), 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 03:50:18,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-23 03:50:18,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-23 03:50:18,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-23 03:50:18,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-23 03:50:18,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 03:50:18,812 INFO L444 BasicCegarLoop]: Path program histogram: [15, 2, 1] [2022-11-23 03:50:18,816 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 03:50:18,816 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:50:18,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:50:18 BasicIcfg [2022-11-23 03:50:18,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:50:18,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:50:18,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:50:18,821 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:50:18,821 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:46:53" (3/4) ... [2022-11-23 03:50:18,825 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 03:50:18,833 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-23 03:50:18,833 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-23 03:50:18,837 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-23 03:50:18,837 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 03:50:18,838 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 03:50:18,838 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 03:50:18,871 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 03:50:18,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:50:18,872 INFO L158 Benchmark]: Toolchain (without parser) took 206451.37ms. Allocated memory was 142.6MB in the beginning and 12.3GB in the end (delta: 12.2GB). Free memory was 97.2MB in the beginning and 8.9GB in the end (delta: -8.8GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. [2022-11-23 03:50:18,872 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:50:18,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 640.07ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 77.5MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-23 03:50:18,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.60ms. Allocated memory is still 142.6MB. Free memory was 77.5MB in the beginning and 75.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:50:18,874 INFO L158 Benchmark]: Boogie Preprocessor took 57.29ms. Allocated memory is still 142.6MB. Free memory was 75.8MB in the beginning and 74.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:50:18,874 INFO L158 Benchmark]: RCFGBuilder took 488.60ms. Allocated memory is still 142.6MB. Free memory was 74.2MB in the beginning and 61.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 03:50:18,874 INFO L158 Benchmark]: TraceAbstraction took 205136.30ms. Allocated memory was 142.6MB in the beginning and 12.3GB in the end (delta: 12.2GB). Free memory was 61.1MB in the beginning and 8.9GB in the end (delta: -8.8GB). Peak memory consumption was 3.7GB. Max. memory is 16.1GB. [2022-11-23 03:50:18,875 INFO L158 Benchmark]: Witness Printer took 51.06ms. Allocated memory is still 12.3GB. Free memory was 8.9GB in the beginning and 8.9GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:50:18,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 640.07ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 77.5MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.60ms. Allocated memory is still 142.6MB. Free memory was 77.5MB in the beginning and 75.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.29ms. Allocated memory is still 142.6MB. Free memory was 75.8MB in the beginning and 74.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 488.60ms. Allocated memory is still 142.6MB. Free memory was 74.2MB in the beginning and 61.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 205136.30ms. Allocated memory was 142.6MB in the beginning and 12.3GB in the end (delta: 12.2GB). Free memory was 61.1MB in the beginning and 8.9GB in the end (delta: -8.8GB). Peak memory consumption was 3.7GB. Max. memory is 16.1GB. * Witness Printer took 51.06ms. Allocated memory is still 12.3GB. Free memory was 8.9GB in the beginning and 8.9GB 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: 2.8s, 70 PlacesBefore, 18 PlacesAfterwards, 68 TransitionsBefore, 14 TransitionsAfterwards, 1122 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 1024 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 904, independent: 878, independent conditional: 0, independent unconditional: 878, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 751, independent: 736, independent conditional: 0, independent unconditional: 736, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 751, independent: 736, independent conditional: 0, independent unconditional: 736, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 904, independent: 142, independent conditional: 0, independent unconditional: 142, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 751, unknown conditional: 0, unknown unconditional: 751] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 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: 205.0s, OverallIterations: 18, TraceHistogramMax: 21, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 186.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7634 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7525 mSDsluCounter, 1225 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1202 mSDsCounter, 778 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6787 IncrementalHoareTripleChecker+Invalid, 7565 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 778 mSolverCounterUnsat, 23 mSDtfsCounter, 6787 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1218 GetRequests, 340 SyntacticMatches, 10 SemanticMatches, 868 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25051 ImplicationChecksByTransitivity, 17.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16973occurred in iteration=16, InterpolantAutomatonStates: 559, 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: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 654 NumberOfCodeBlocks, 653 NumberOfCodeBlocksAsserted, 86 NumberOfCheckSat, 865 ConstructedInterpolants, 0 QuantifiedInterpolants, 3664 SizeOfPredicates, 157 NumberOfNonLiveVariables, 2340 ConjunctsInSsa, 246 ConjunctsInUnsatCore, 41 InterpolantComputations, 7 PerfectInterpolantSequences, 801/3260 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 03:50:18,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f93f22da-0f32-401a-9230-e154cabbfd40/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