./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ --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 9a8131f8693d82039b4018f716a17d0a3e1038ace11c7bb21b12bc911efac3c1 --- 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-dbf71c6-m [2022-10-17 10:20:58,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:20:58,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:20:58,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:20:58,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:20:58,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:20:58,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:20:58,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:20:58,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:20:58,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:20:58,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:20:58,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:20:58,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:20:58,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:20:58,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:20:58,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:20:58,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:20:58,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:20:58,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:20:58,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:20:58,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:20:58,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:20:58,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:20:58,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:20:58,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:20:58,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:20:58,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:20:58,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:20:58,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:20:58,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:20:58,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:20:58,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:20:58,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:20:58,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:20:58,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:20:58,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:20:58,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:20:58,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:20:58,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:20:58,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:20:58,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:20:58,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:20:58,229 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:20:58,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:20:58,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:20:58,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:20:58,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:20:58,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:20:58,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:20:58,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:20:58,232 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:20:58,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:20:58,233 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:20:58,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:20:58,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:20:58,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:20:58,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:20:58,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:20:58,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:20:58,235 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:20:58,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:20:58,235 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:20:58,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:20:58,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:20:58,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:20:58,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:20:58,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:20:58,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:20:58,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:20:58,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:20:58,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:20:58,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:20:58,238 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:20:58,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:20:58,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:20:58,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a8131f8693d82039b4018f716a17d0a3e1038ace11c7bb21b12bc911efac3c1 [2022-10-17 10:20:58,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:20:58,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:20:58,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:20:58,607 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:20:58,608 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:20:58,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i [2022-10-17 10:20:58,698 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/data/a14136fb9/564ed8df65474edaaca11fd8b0dbc19c/FLAG6a9d986ac [2022-10-17 10:20:59,332 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:20:59,332 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i [2022-10-17 10:20:59,356 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/data/a14136fb9/564ed8df65474edaaca11fd8b0dbc19c/FLAG6a9d986ac [2022-10-17 10:20:59,563 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/data/a14136fb9/564ed8df65474edaaca11fd8b0dbc19c [2022-10-17 10:20:59,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:20:59,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:20:59,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:20:59,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:20:59,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:20:59,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:59" (1/1) ... [2022-10-17 10:20:59,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8da00d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:59, skipping insertion in model container [2022-10-17 10:20:59,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:59" (1/1) ... [2022-10-17 10:20:59,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:20:59,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:20:59,872 WARN L230 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_2ee898fe-215b-4864-a13f-754962397301/sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i[949,962] [2022-10-17 10:21:00,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:21:00,085 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:21:00,115 WARN L230 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_2ee898fe-215b-4864-a13f-754962397301/sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i[949,962] [2022-10-17 10:21:00,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:21:00,292 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:21:00,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:00 WrapperNode [2022-10-17 10:21:00,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:21:00,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:21:00,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:21:00,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:21:00,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:00" (1/1) ... [2022-10-17 10:21:00,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:00" (1/1) ... [2022-10-17 10:21:00,415 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 290 [2022-10-17 10:21:00,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:21:00,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:21:00,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:21:00,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:21:00,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:00" (1/1) ... [2022-10-17 10:21:00,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:00" (1/1) ... [2022-10-17 10:21:00,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:00" (1/1) ... [2022-10-17 10:21:00,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:00" (1/1) ... [2022-10-17 10:21:00,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:00" (1/1) ... [2022-10-17 10:21:00,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:00" (1/1) ... [2022-10-17 10:21:00,470 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:00" (1/1) ... [2022-10-17 10:21:00,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:00" (1/1) ... [2022-10-17 10:21:00,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:21:00,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:21:00,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:21:00,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:21:00,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:00" (1/1) ... [2022-10-17 10:21:00,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:21:00,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:21:00,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:21:00,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee898fe-215b-4864-a13f-754962397301/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:21:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:21:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:21:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:21:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:21:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:21:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:21:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:21:00,619 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:21:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:21:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:21:00,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:21:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:21:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:21:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:21:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:21:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:21:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:21:00,625 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:21:00,804 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:21:00,814 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:21:01,745 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:21:02,320 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:21:02,321 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:21:02,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:21:02 BoogieIcfgContainer [2022-10-17 10:21:02,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:21:02,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:21:02,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:21:02,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:21:02,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:20:59" (1/3) ... [2022-10-17 10:21:02,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1192c3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:21:02, skipping insertion in model container [2022-10-17 10:21:02,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:21:00" (2/3) ... [2022-10-17 10:21:02,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1192c3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:21:02, skipping insertion in model container [2022-10-17 10:21:02,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:21:02" (3/3) ... [2022-10-17 10:21:02,338 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053_tso.oepc.i [2022-10-17 10:21:02,348 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:21:02,358 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:21:02,359 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:21:02,359 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:21:02,474 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:21:02,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 134 transitions, 288 flow [2022-10-17 10:21:02,617 INFO L130 PetriNetUnfolder]: 2/130 cut-off events. [2022-10-17 10:21:02,617 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:21:02,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 2/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-10-17 10:21:02,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 134 transitions, 288 flow [2022-10-17 10:21:02,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 130 transitions, 272 flow [2022-10-17 10:21:02,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:21:02,649 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;@65eb6b72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:21:02,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:21:02,678 INFO L130 PetriNetUnfolder]: 0/75 cut-off events. [2022-10-17 10:21:02,678 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:21:02,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:02,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:02,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:21:02,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:02,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1118078414, now seen corresponding path program 1 times [2022-10-17 10:21:02,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:02,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784237068] [2022-10-17 10:21:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:02,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:03,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:03,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784237068] [2022-10-17 10:21:03,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784237068] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:03,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:03,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:21:03,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588894803] [2022-10-17 10:21:03,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:03,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:21:03,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:03,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:21:03,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:21:03,556 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 134 [2022-10-17 10:21:03,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2022-10-17 10:21:03,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:03,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 134 [2022-10-17 10:21:03,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:03,860 INFO L130 PetriNetUnfolder]: 57/522 cut-off events. [2022-10-17 10:21:03,861 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-10-17 10:21:03,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 522 events. 57/522 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2644 event pairs, 31 based on Foata normal form. 15/507 useless extension candidates. Maximal degree in co-relation 595. Up to 75 conditions per place. [2022-10-17 10:21:03,873 INFO L137 encePairwiseOnDemand]: 129/134 looper letters, 14 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2022-10-17 10:21:03,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 131 transitions, 309 flow [2022-10-17 10:21:03,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:21:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:21:03,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2022-10-17 10:21:03,896 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9402985074626866 [2022-10-17 10:21:03,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2022-10-17 10:21:03,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2022-10-17 10:21:03,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:03,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2022-10-17 10:21:03,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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) [2022-10-17 10:21:03,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2022-10-17 10:21:03,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2022-10-17 10:21:03,927 INFO L175 Difference]: Start difference. First operand has 141 places, 130 transitions, 272 flow. Second operand 3 states and 378 transitions. [2022-10-17 10:21:03,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 131 transitions, 309 flow [2022-10-17 10:21:03,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 131 transitions, 304 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:21:03,942 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 264 flow [2022-10-17 10:21:03,944 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2022-10-17 10:21:03,950 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, -4 predicate places. [2022-10-17 10:21:03,951 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 264 flow [2022-10-17 10:21:03,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2022-10-17 10:21:03,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:03,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:03,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:21:03,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:21:03,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1709840169, now seen corresponding path program 1 times [2022-10-17 10:21:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:03,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876543423] [2022-10-17 10:21:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:04,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:04,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876543423] [2022-10-17 10:21:04,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876543423] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:04,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:04,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:21:04,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991330758] [2022-10-17 10:21:04,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:04,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:21:04,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:21:04,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:21:04,627 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 134 [2022-10-17 10:21:04,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2022-10-17 10:21:04,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:04,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 134 [2022-10-17 10:21:04,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:05,707 INFO L130 PetriNetUnfolder]: 954/2701 cut-off events. [2022-10-17 10:21:05,707 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2022-10-17 10:21:05,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4323 conditions, 2701 events. 954/2701 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 21844 event pairs, 125 based on Foata normal form. 0/2632 useless extension candidates. Maximal degree in co-relation 4268. Up to 816 conditions per place. [2022-10-17 10:21:05,733 INFO L137 encePairwiseOnDemand]: 127/134 looper letters, 24 selfloop transitions, 3 changer transitions 56/177 dead transitions. [2022-10-17 10:21:05,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 177 transitions, 526 flow [2022-10-17 10:21:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:21:05,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:21:05,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1071 transitions. [2022-10-17 10:21:05,740 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8880597014925373 [2022-10-17 10:21:05,740 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1071 transitions. [2022-10-17 10:21:05,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1071 transitions. [2022-10-17 10:21:05,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:05,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1071 transitions. [2022-10-17 10:21:05,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 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) [2022-10-17 10:21:05,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 134.0) internal successors, (1340), 10 states have internal predecessors, (1340), 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) [2022-10-17 10:21:05,754 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 134.0) internal successors, (1340), 10 states have internal predecessors, (1340), 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) [2022-10-17 10:21:05,754 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 264 flow. Second operand 9 states and 1071 transitions. [2022-10-17 10:21:05,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 177 transitions, 526 flow [2022-10-17 10:21:05,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 177 transitions, 508 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:21:05,764 INFO L231 Difference]: Finished difference. Result has 150 places, 114 transitions, 275 flow [2022-10-17 10:21:05,765 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=275, PETRI_PLACES=150, PETRI_TRANSITIONS=114} [2022-10-17 10:21:05,766 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 9 predicate places. [2022-10-17 10:21:05,767 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 114 transitions, 275 flow [2022-10-17 10:21:05,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2022-10-17 10:21:05,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:05,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:05,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:21:05,769 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:21:05,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:05,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1106934232, now seen corresponding path program 1 times [2022-10-17 10:21:05,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:05,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931414068] [2022-10-17 10:21:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:05,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:06,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:06,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931414068] [2022-10-17 10:21:06,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931414068] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:06,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:06,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:21:06,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037627258] [2022-10-17 10:21:06,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:06,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:21:06,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:06,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:21:06,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:21:06,825 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-10-17 10:21:06,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 114 transitions, 275 flow. Second operand has 11 states, 11 states have (on average 109.45454545454545) internal successors, (1204), 11 states have internal predecessors, (1204), 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) [2022-10-17 10:21:06,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:06,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-10-17 10:21:06,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:07,795 INFO L130 PetriNetUnfolder]: 755/1541 cut-off events. [2022-10-17 10:21:07,795 INFO L131 PetriNetUnfolder]: For 1284/1294 co-relation queries the response was YES. [2022-10-17 10:21:07,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3602 conditions, 1541 events. 755/1541 cut-off events. For 1284/1294 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10075 event pairs, 195 based on Foata normal form. 45/1517 useless extension candidates. Maximal degree in co-relation 3536. Up to 603 conditions per place. [2022-10-17 10:21:07,817 INFO L137 encePairwiseOnDemand]: 121/134 looper letters, 22 selfloop transitions, 10 changer transitions 44/169 dead transitions. [2022-10-17 10:21:07,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 169 transitions, 571 flow [2022-10-17 10:21:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:21:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:21:07,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1807 transitions. [2022-10-17 10:21:07,825 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8428171641791045 [2022-10-17 10:21:07,826 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1807 transitions. [2022-10-17 10:21:07,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1807 transitions. [2022-10-17 10:21:07,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:07,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1807 transitions. [2022-10-17 10:21:07,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 112.9375) internal successors, (1807), 16 states have internal predecessors, (1807), 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) [2022-10-17 10:21:07,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 134.0) internal successors, (2278), 17 states have internal predecessors, (2278), 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) [2022-10-17 10:21:07,841 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 134.0) internal successors, (2278), 17 states have internal predecessors, (2278), 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) [2022-10-17 10:21:07,842 INFO L175 Difference]: Start difference. First operand has 150 places, 114 transitions, 275 flow. Second operand 16 states and 1807 transitions. [2022-10-17 10:21:07,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 169 transitions, 571 flow [2022-10-17 10:21:07,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 169 transitions, 550 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-10-17 10:21:07,858 INFO L231 Difference]: Finished difference. Result has 152 places, 119 transitions, 353 flow [2022-10-17 10:21:07,858 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=353, PETRI_PLACES=152, PETRI_TRANSITIONS=119} [2022-10-17 10:21:07,861 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 11 predicate places. [2022-10-17 10:21:07,861 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 119 transitions, 353 flow [2022-10-17 10:21:07,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 109.45454545454545) internal successors, (1204), 11 states have internal predecessors, (1204), 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) [2022-10-17 10:21:07,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:07,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:07,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:21:07,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:21:07,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1604978853, now seen corresponding path program 1 times [2022-10-17 10:21:07,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:07,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783703701] [2022-10-17 10:21:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:07,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:08,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:08,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783703701] [2022-10-17 10:21:08,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783703701] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:08,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:08,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:21:08,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718312193] [2022-10-17 10:21:08,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:08,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:21:08,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:08,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:21:08,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:21:08,699 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 134 [2022-10-17 10:21:08,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 119 transitions, 353 flow. Second operand has 9 states, 9 states have (on average 111.66666666666667) internal successors, (1005), 9 states have internal predecessors, (1005), 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) [2022-10-17 10:21:08,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:08,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 134 [2022-10-17 10:21:08,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:09,630 INFO L130 PetriNetUnfolder]: 621/1495 cut-off events. [2022-10-17 10:21:09,630 INFO L131 PetriNetUnfolder]: For 4630/4651 co-relation queries the response was YES. [2022-10-17 10:21:09,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5072 conditions, 1495 events. 621/1495 cut-off events. For 4630/4651 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9856 event pairs, 91 based on Foata normal form. 28/1460 useless extension candidates. Maximal degree in co-relation 4994. Up to 488 conditions per place. [2022-10-17 10:21:09,661 INFO L137 encePairwiseOnDemand]: 123/134 looper letters, 30 selfloop transitions, 9 changer transitions 37/171 dead transitions. [2022-10-17 10:21:09,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 171 transitions, 867 flow [2022-10-17 10:21:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:21:09,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 10:21:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1615 transitions. [2022-10-17 10:21:09,668 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8608742004264393 [2022-10-17 10:21:09,669 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1615 transitions. [2022-10-17 10:21:09,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1615 transitions. [2022-10-17 10:21:09,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:09,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1615 transitions. [2022-10-17 10:21:09,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 115.35714285714286) internal successors, (1615), 14 states have internal predecessors, (1615), 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) [2022-10-17 10:21:09,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 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) [2022-10-17 10:21:09,686 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 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) [2022-10-17 10:21:09,687 INFO L175 Difference]: Start difference. First operand has 152 places, 119 transitions, 353 flow. Second operand 14 states and 1615 transitions. [2022-10-17 10:21:09,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 171 transitions, 867 flow [2022-10-17 10:21:09,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 171 transitions, 837 flow, removed 12 selfloop flow, removed 6 redundant places. [2022-10-17 10:21:09,705 INFO L231 Difference]: Finished difference. Result has 160 places, 123 transitions, 426 flow [2022-10-17 10:21:09,711 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=426, PETRI_PLACES=160, PETRI_TRANSITIONS=123} [2022-10-17 10:21:09,713 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 19 predicate places. [2022-10-17 10:21:09,713 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 123 transitions, 426 flow [2022-10-17 10:21:09,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 111.66666666666667) internal successors, (1005), 9 states have internal predecessors, (1005), 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) [2022-10-17 10:21:09,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:09,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:09,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:21:09,715 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:21:09,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:09,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1551940315, now seen corresponding path program 2 times [2022-10-17 10:21:09,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:09,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431101459] [2022-10-17 10:21:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:09,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:10,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:10,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431101459] [2022-10-17 10:21:10,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431101459] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:10,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:10,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:21:10,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141939871] [2022-10-17 10:21:10,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:10,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:21:10,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:10,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:21:10,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:21:10,803 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 134 [2022-10-17 10:21:10,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 123 transitions, 426 flow. Second operand has 9 states, 9 states have (on average 111.66666666666667) internal successors, (1005), 9 states have internal predecessors, (1005), 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) [2022-10-17 10:21:10,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:10,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 134 [2022-10-17 10:21:10,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:11,847 INFO L130 PetriNetUnfolder]: 605/1431 cut-off events. [2022-10-17 10:21:11,847 INFO L131 PetriNetUnfolder]: For 9954/10027 co-relation queries the response was YES. [2022-10-17 10:21:11,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6520 conditions, 1431 events. 605/1431 cut-off events. For 9954/10027 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9169 event pairs, 128 based on Foata normal form. 39/1405 useless extension candidates. Maximal degree in co-relation 6435. Up to 480 conditions per place. [2022-10-17 10:21:11,890 INFO L137 encePairwiseOnDemand]: 124/134 looper letters, 31 selfloop transitions, 11 changer transitions 37/174 dead transitions. [2022-10-17 10:21:11,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 174 transitions, 1176 flow [2022-10-17 10:21:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:21:11,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 10:21:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1615 transitions. [2022-10-17 10:21:11,898 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8608742004264393 [2022-10-17 10:21:11,898 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1615 transitions. [2022-10-17 10:21:11,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1615 transitions. [2022-10-17 10:21:11,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:11,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1615 transitions. [2022-10-17 10:21:11,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 115.35714285714286) internal successors, (1615), 14 states have internal predecessors, (1615), 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) [2022-10-17 10:21:11,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 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) [2022-10-17 10:21:11,916 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 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) [2022-10-17 10:21:11,916 INFO L175 Difference]: Start difference. First operand has 160 places, 123 transitions, 426 flow. Second operand 14 states and 1615 transitions. [2022-10-17 10:21:11,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 174 transitions, 1176 flow [2022-10-17 10:21:11,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 174 transitions, 1099 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-10-17 10:21:11,941 INFO L231 Difference]: Finished difference. Result has 166 places, 126 transitions, 496 flow [2022-10-17 10:21:11,942 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=496, PETRI_PLACES=166, PETRI_TRANSITIONS=126} [2022-10-17 10:21:11,945 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 25 predicate places. [2022-10-17 10:21:11,945 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 126 transitions, 496 flow [2022-10-17 10:21:11,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 111.66666666666667) internal successors, (1005), 9 states have internal predecessors, (1005), 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) [2022-10-17 10:21:11,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:11,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:11,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:21:11,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:21:11,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:11,949 INFO L85 PathProgramCache]: Analyzing trace with hash 627962931, now seen corresponding path program 1 times [2022-10-17 10:21:11,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:11,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321818704] [2022-10-17 10:21:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:11,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:13,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:13,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321818704] [2022-10-17 10:21:13,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321818704] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:13,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:13,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-10-17 10:21:13,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825779253] [2022-10-17 10:21:13,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:13,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:21:13,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:13,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:21:13,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:21:13,647 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 134 [2022-10-17 10:21:13,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 126 transitions, 496 flow. Second operand has 14 states, 14 states have (on average 107.42857142857143) internal successors, (1504), 14 states have internal predecessors, (1504), 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) [2022-10-17 10:21:13,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:13,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 134 [2022-10-17 10:21:13,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:14,576 INFO L130 PetriNetUnfolder]: 466/1152 cut-off events. [2022-10-17 10:21:14,577 INFO L131 PetriNetUnfolder]: For 13531/13644 co-relation queries the response was YES. [2022-10-17 10:21:14,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5974 conditions, 1152 events. 466/1152 cut-off events. For 13531/13644 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6998 event pairs, 97 based on Foata normal form. 29/1114 useless extension candidates. Maximal degree in co-relation 5880. Up to 450 conditions per place. [2022-10-17 10:21:14,614 INFO L137 encePairwiseOnDemand]: 122/134 looper letters, 32 selfloop transitions, 11 changer transitions 25/159 dead transitions. [2022-10-17 10:21:14,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 159 transitions, 1135 flow [2022-10-17 10:21:14,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:21:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-10-17 10:21:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1650 transitions. [2022-10-17 10:21:14,622 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8208955223880597 [2022-10-17 10:21:14,622 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1650 transitions. [2022-10-17 10:21:14,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1650 transitions. [2022-10-17 10:21:14,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:14,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1650 transitions. [2022-10-17 10:21:14,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 110.0) internal successors, (1650), 15 states have internal predecessors, (1650), 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) [2022-10-17 10:21:14,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 134.0) internal successors, (2144), 16 states have internal predecessors, (2144), 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) [2022-10-17 10:21:14,640 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 134.0) internal successors, (2144), 16 states have internal predecessors, (2144), 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) [2022-10-17 10:21:14,640 INFO L175 Difference]: Start difference. First operand has 166 places, 126 transitions, 496 flow. Second operand 15 states and 1650 transitions. [2022-10-17 10:21:14,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 159 transitions, 1135 flow [2022-10-17 10:21:14,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 159 transitions, 945 flow, removed 90 selfloop flow, removed 11 redundant places. [2022-10-17 10:21:14,671 INFO L231 Difference]: Finished difference. Result has 167 places, 126 transitions, 469 flow [2022-10-17 10:21:14,672 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=469, PETRI_PLACES=167, PETRI_TRANSITIONS=126} [2022-10-17 10:21:14,676 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 26 predicate places. [2022-10-17 10:21:14,676 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 126 transitions, 469 flow [2022-10-17 10:21:14,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 107.42857142857143) internal successors, (1504), 14 states have internal predecessors, (1504), 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) [2022-10-17 10:21:14,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:14,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:14,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:21:14,679 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:21:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:14,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1998423079, now seen corresponding path program 1 times [2022-10-17 10:21:14,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:14,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371753637] [2022-10-17 10:21:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:14,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:15,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:15,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371753637] [2022-10-17 10:21:15,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371753637] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:15,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:15,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:21:15,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447756285] [2022-10-17 10:21:15,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:15,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:21:15,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:15,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:21:15,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:21:15,815 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-10-17 10:21:15,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 126 transitions, 469 flow. Second operand has 9 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 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) [2022-10-17 10:21:15,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:15,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-10-17 10:21:15,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:16,726 INFO L130 PetriNetUnfolder]: 499/1259 cut-off events. [2022-10-17 10:21:16,727 INFO L131 PetriNetUnfolder]: For 9274/9348 co-relation queries the response was YES. [2022-10-17 10:21:16,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5683 conditions, 1259 events. 499/1259 cut-off events. For 9274/9348 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7840 event pairs, 100 based on Foata normal form. 36/1230 useless extension candidates. Maximal degree in co-relation 5588. Up to 465 conditions per place. [2022-10-17 10:21:16,767 INFO L137 encePairwiseOnDemand]: 122/134 looper letters, 31 selfloop transitions, 13 changer transitions 25/162 dead transitions. [2022-10-17 10:21:16,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 162 transitions, 1031 flow [2022-10-17 10:21:16,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:21:16,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-10-17 10:21:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1360 transitions. [2022-10-17 10:21:16,774 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.845771144278607 [2022-10-17 10:21:16,775 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1360 transitions. [2022-10-17 10:21:16,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1360 transitions. [2022-10-17 10:21:16,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:16,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1360 transitions. [2022-10-17 10:21:16,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 113.33333333333333) internal successors, (1360), 12 states have internal predecessors, (1360), 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) [2022-10-17 10:21:16,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 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) [2022-10-17 10:21:16,788 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 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) [2022-10-17 10:21:16,788 INFO L175 Difference]: Start difference. First operand has 167 places, 126 transitions, 469 flow. Second operand 12 states and 1360 transitions. [2022-10-17 10:21:16,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 162 transitions, 1031 flow [2022-10-17 10:21:16,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 162 transitions, 965 flow, removed 24 selfloop flow, removed 16 redundant places. [2022-10-17 10:21:16,821 INFO L231 Difference]: Finished difference. Result has 163 places, 129 transitions, 537 flow [2022-10-17 10:21:16,822 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=537, PETRI_PLACES=163, PETRI_TRANSITIONS=129} [2022-10-17 10:21:16,823 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 22 predicate places. [2022-10-17 10:21:16,823 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 129 transitions, 537 flow [2022-10-17 10:21:16,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 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) [2022-10-17 10:21:16,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:16,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:16,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:21:16,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:21:16,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:16,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1134362339, now seen corresponding path program 2 times [2022-10-17 10:21:16,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:16,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097224824] [2022-10-17 10:21:16,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:16,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:17,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:17,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097224824] [2022-10-17 10:21:17,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097224824] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:17,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:17,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:21:17,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762749431] [2022-10-17 10:21:17,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:17,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:21:17,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:17,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:21:17,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:21:17,930 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-10-17 10:21:17,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 129 transitions, 537 flow. Second operand has 11 states, 11 states have (on average 109.63636363636364) internal successors, (1206), 11 states have internal predecessors, (1206), 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) [2022-10-17 10:21:17,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:17,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-10-17 10:21:17,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:19,044 INFO L130 PetriNetUnfolder]: 505/1281 cut-off events. [2022-10-17 10:21:19,044 INFO L131 PetriNetUnfolder]: For 16155/16247 co-relation queries the response was YES. [2022-10-17 10:21:19,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7055 conditions, 1281 events. 505/1281 cut-off events. For 16155/16247 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8108 event pairs, 98 based on Foata normal form. 34/1250 useless extension candidates. Maximal degree in co-relation 6966. Up to 470 conditions per place. [2022-10-17 10:21:19,090 INFO L137 encePairwiseOnDemand]: 122/134 looper letters, 29 selfloop transitions, 18 changer transitions 25/165 dead transitions. [2022-10-17 10:21:19,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 165 transitions, 1283 flow [2022-10-17 10:21:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:21:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:21:19,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1468 transitions. [2022-10-17 10:21:19,096 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8427095292766934 [2022-10-17 10:21:19,097 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1468 transitions. [2022-10-17 10:21:19,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1468 transitions. [2022-10-17 10:21:19,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:19,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1468 transitions. [2022-10-17 10:21:19,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 112.92307692307692) internal successors, (1468), 13 states have internal predecessors, (1468), 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) [2022-10-17 10:21:19,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 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) [2022-10-17 10:21:19,111 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 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) [2022-10-17 10:21:19,111 INFO L175 Difference]: Start difference. First operand has 163 places, 129 transitions, 537 flow. Second operand 13 states and 1468 transitions. [2022-10-17 10:21:19,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 165 transitions, 1283 flow [2022-10-17 10:21:19,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 165 transitions, 1215 flow, removed 23 selfloop flow, removed 7 redundant places. [2022-10-17 10:21:19,130 INFO L231 Difference]: Finished difference. Result has 169 places, 132 transitions, 625 flow [2022-10-17 10:21:19,131 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=625, PETRI_PLACES=169, PETRI_TRANSITIONS=132} [2022-10-17 10:21:19,133 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 28 predicate places. [2022-10-17 10:21:19,133 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 132 transitions, 625 flow [2022-10-17 10:21:19,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 109.63636363636364) internal successors, (1206), 11 states have internal predecessors, (1206), 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) [2022-10-17 10:21:19,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:19,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:19,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:21:19,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:21:19,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1619106973, now seen corresponding path program 3 times [2022-10-17 10:21:19,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:19,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144205616] [2022-10-17 10:21:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:19,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:20,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:20,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144205616] [2022-10-17 10:21:20,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144205616] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:20,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:20,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:21:20,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390091042] [2022-10-17 10:21:20,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:20,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:21:20,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:21:20,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:21:20,251 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 134 [2022-10-17 10:21:20,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 132 transitions, 625 flow. Second operand has 12 states, 12 states have (on average 108.58333333333333) internal successors, (1303), 12 states have internal predecessors, (1303), 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) [2022-10-17 10:21:20,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:20,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 134 [2022-10-17 10:21:20,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:21,465 INFO L130 PetriNetUnfolder]: 824/1909 cut-off events. [2022-10-17 10:21:21,466 INFO L131 PetriNetUnfolder]: For 49755/50338 co-relation queries the response was YES. [2022-10-17 10:21:21,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14125 conditions, 1909 events. 824/1909 cut-off events. For 49755/50338 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 13401 event pairs, 163 based on Foata normal form. 56/1871 useless extension candidates. Maximal degree in co-relation 14030. Up to 669 conditions per place. [2022-10-17 10:21:21,547 INFO L137 encePairwiseOnDemand]: 119/134 looper letters, 47 selfloop transitions, 25 changer transitions 13/177 dead transitions. [2022-10-17 10:21:21,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 177 transitions, 1519 flow [2022-10-17 10:21:21,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:21:21,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:21:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1460 transitions. [2022-10-17 10:21:21,556 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8381171067738232 [2022-10-17 10:21:21,556 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1460 transitions. [2022-10-17 10:21:21,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1460 transitions. [2022-10-17 10:21:21,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:21,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1460 transitions. [2022-10-17 10:21:21,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 112.3076923076923) internal successors, (1460), 13 states have internal predecessors, (1460), 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) [2022-10-17 10:21:21,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 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) [2022-10-17 10:21:21,571 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 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) [2022-10-17 10:21:21,571 INFO L175 Difference]: Start difference. First operand has 169 places, 132 transitions, 625 flow. Second operand 13 states and 1460 transitions. [2022-10-17 10:21:21,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 177 transitions, 1519 flow [2022-10-17 10:21:21,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 177 transitions, 1035 flow, removed 226 selfloop flow, removed 17 redundant places. [2022-10-17 10:21:21,633 INFO L231 Difference]: Finished difference. Result has 165 places, 144 transitions, 694 flow [2022-10-17 10:21:21,633 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=694, PETRI_PLACES=165, PETRI_TRANSITIONS=144} [2022-10-17 10:21:21,634 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 24 predicate places. [2022-10-17 10:21:21,635 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 144 transitions, 694 flow [2022-10-17 10:21:21,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 108.58333333333333) internal successors, (1303), 12 states have internal predecessors, (1303), 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) [2022-10-17 10:21:21,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:21,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:21,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:21:21,637 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:21:21,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:21,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1605528129, now seen corresponding path program 4 times [2022-10-17 10:21:21,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:21,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603909332] [2022-10-17 10:21:21,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:21,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:22,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:22,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603909332] [2022-10-17 10:21:22,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603909332] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:22,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:22,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:21:22,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528285270] [2022-10-17 10:21:22,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:22,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:21:22,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:22,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:21:22,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:21:22,632 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-10-17 10:21:22,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 144 transitions, 694 flow. Second operand has 9 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 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) [2022-10-17 10:21:22,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:22,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-10-17 10:21:22,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:21:23,777 INFO L130 PetriNetUnfolder]: 1005/2285 cut-off events. [2022-10-17 10:21:23,777 INFO L131 PetriNetUnfolder]: For 20815/21689 co-relation queries the response was YES. [2022-10-17 10:21:23,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12378 conditions, 2285 events. 1005/2285 cut-off events. For 20815/21689 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 16700 event pairs, 195 based on Foata normal form. 67/2250 useless extension candidates. Maximal degree in co-relation 12287. Up to 917 conditions per place. [2022-10-17 10:21:23,824 INFO L137 encePairwiseOnDemand]: 123/134 looper letters, 47 selfloop transitions, 17 changer transitions 25/182 dead transitions. [2022-10-17 10:21:23,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 182 transitions, 1362 flow [2022-10-17 10:21:23,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:21:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-10-17 10:21:23,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1358 transitions. [2022-10-17 10:21:23,829 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8445273631840796 [2022-10-17 10:21:23,829 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1358 transitions. [2022-10-17 10:21:23,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1358 transitions. [2022-10-17 10:21:23,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:21:23,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1358 transitions. [2022-10-17 10:21:23,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 113.16666666666667) internal successors, (1358), 12 states have internal predecessors, (1358), 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) [2022-10-17 10:21:23,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 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) [2022-10-17 10:21:23,841 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 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) [2022-10-17 10:21:23,841 INFO L175 Difference]: Start difference. First operand has 165 places, 144 transitions, 694 flow. Second operand 12 states and 1358 transitions. [2022-10-17 10:21:23,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 182 transitions, 1362 flow [2022-10-17 10:21:23,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 182 transitions, 1303 flow, removed 23 selfloop flow, removed 8 redundant places. [2022-10-17 10:21:23,876 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 781 flow [2022-10-17 10:21:23,877 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=781, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2022-10-17 10:21:23,878 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 31 predicate places. [2022-10-17 10:21:23,878 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 781 flow [2022-10-17 10:21:23,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 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) [2022-10-17 10:21:23,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:21:23,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:21:23,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:21:23,880 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:21:23,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:21:23,881 INFO L85 PathProgramCache]: Analyzing trace with hash -928957365, now seen corresponding path program 1 times [2022-10-17 10:21:23,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:21:23,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483302204] [2022-10-17 10:21:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:21:23,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:21:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:21:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:21:25,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:21:25,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483302204] [2022-10-17 10:21:25,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483302204] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:21:25,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:21:25,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:21:25,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727172676] [2022-10-17 10:21:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:21:25,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:21:25,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:21:25,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:21:25,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:21:25,186 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-10-17 10:21:25,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 147 transitions, 781 flow. Second operand has 12 states, 12 states have (on average 109.58333333333333) internal successors, (1315), 12 states have internal predecessors, (1315), 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) [2022-10-17 10:21:25,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:21:25,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-10-17 10:21:25,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand