./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.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_e98a461a-11f0-4508-bbac-42e6bf8efdc6/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98a461a-11f0-4508-bbac-42e6bf8efdc6/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_e98a461a-11f0-4508-bbac-42e6bf8efdc6/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98a461a-11f0-4508-bbac-42e6bf8efdc6/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98a461a-11f0-4508-bbac-42e6bf8efdc6/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_e98a461a-11f0-4508-bbac-42e6bf8efdc6/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 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 --- 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 10:38:50,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:38:50,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:38:50,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:38:50,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:38:50,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:38:50,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:38:50,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:38:50,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:38:50,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:38:50,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:38:50,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:38:50,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:38:50,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:38:50,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:38:50,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:38:50,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:38:50,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:38:50,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:38:50,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:38:50,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:38:50,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:38:50,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:38:50,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:38:51,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:38:51,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:38:51,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:38:51,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:38:51,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:38:51,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:38:51,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:38:51,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:38:51,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:38:51,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:38:51,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:38:51,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:38:51,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:38:51,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:38:51,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:38:51,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:38:51,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:38:51,027 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98a461a-11f0-4508-bbac-42e6bf8efdc6/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:38:51,073 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:38:51,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:38:51,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:38:51,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:38:51,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:38:51,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:38:51,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:38:51,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:38:51,076 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:38:51,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:38:51,084 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:38:51,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:38:51,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:38:51,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:38:51,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:38:51,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:38:51,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:38:51,085 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:38:51,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:38:51,086 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:38:51,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:38:51,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:38:51,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:38:51,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:38:51,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:38:51,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:38:51,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:38:51,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:38:51,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:38:51,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:38:51,089 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:38:51,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:38:51,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:38:51,090 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_e98a461a-11f0-4508-bbac-42e6bf8efdc6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98a461a-11f0-4508-bbac-42e6bf8efdc6/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 [2022-10-17 10:38:51,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:38:51,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:38:51,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:38:51,438 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:38:51,439 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:38:51,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98a461a-11f0-4508-bbac-42e6bf8efdc6/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2022-10-17 10:38:51,514 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98a461a-11f0-4508-bbac-42e6bf8efdc6/bin/uautomizer-J5u9QxTXDZ/data/ea9e3a52e/ee782ed6760e4f50a0d9a38bd575e0a5/FLAG0c6d02b9f [2022-10-17 10:38:52,103 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:38:52,104 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98a461a-11f0-4508-bbac-42e6bf8efdc6/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2022-10-17 10:38:52,122 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98a461a-11f0-4508-bbac-42e6bf8efdc6/bin/uautomizer-J5u9QxTXDZ/data/ea9e3a52e/ee782ed6760e4f50a0d9a38bd575e0a5/FLAG0c6d02b9f [2022-10-17 10:38:52,347 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98a461a-11f0-4508-bbac-42e6bf8efdc6/bin/uautomizer-J5u9QxTXDZ/data/ea9e3a52e/ee782ed6760e4f50a0d9a38bd575e0a5 [2022-10-17 10:38:52,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:38:52,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:38:52,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:38:52,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:38:52,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:38:52,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:38:52" (1/1) ... [2022-10-17 10:38:52,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e1706a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:52, skipping insertion in model container [2022-10-17 10:38:52,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:38:52" (1/1) ... [2022-10-17 10:38:52,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:38:52,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:38:52,653 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_e98a461a-11f0-4508-bbac-42e6bf8efdc6/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i[951,964] [2022-10-17 10:38:53,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:38:53,073 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:38:53,089 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_e98a461a-11f0-4508-bbac-42e6bf8efdc6/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i[951,964] [2022-10-17 10:38:53,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:38:53,198 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:38:53,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:53 WrapperNode [2022-10-17 10:38:53,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:38:53,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:38:53,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:38:53,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:38:53,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:53" (1/1) ... [2022-10-17 10:38:53,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:53" (1/1) ... [2022-10-17 10:38:53,275 INFO L138 Inliner]: procedures = 177, calls = 91, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 273 [2022-10-17 10:38:53,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:38:53,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:38:53,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:38:53,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:38:53,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:53" (1/1) ... [2022-10-17 10:38:53,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:53" (1/1) ... [2022-10-17 10:38:53,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:53" (1/1) ... [2022-10-17 10:38:53,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:53" (1/1) ... [2022-10-17 10:38:53,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:53" (1/1) ... [2022-10-17 10:38:53,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:53" (1/1) ... [2022-10-17 10:38:53,370 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:53" (1/1) ... [2022-10-17 10:38:53,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:53" (1/1) ... [2022-10-17 10:38:53,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:38:53,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:38:53,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:38:53,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:38:53,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:53" (1/1) ... [2022-10-17 10:38:53,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:38:53,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98a461a-11f0-4508-bbac-42e6bf8efdc6/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:53,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98a461a-11f0-4508-bbac-42e6bf8efdc6/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:38:53,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98a461a-11f0-4508-bbac-42e6bf8efdc6/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:38:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:38:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:38:53,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:38:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:38:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:38:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:38:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:38:53,498 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:38:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:38:53,500 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:38:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:38:53,500 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:38:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:38:53,501 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:38:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:38:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:38:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:38:53,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:38:53,504 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 10:38:53,770 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:38:53,772 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:38:54,828 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:38:55,904 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:38:55,905 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:38:55,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:38:55 BoogieIcfgContainer [2022-10-17 10:38:55,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:38:55,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:38:55,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:38:55,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:38:55,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:38:52" (1/3) ... [2022-10-17 10:38:55,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319db73a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:38:55, skipping insertion in model container [2022-10-17 10:38:55,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:53" (2/3) ... [2022-10-17 10:38:55,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319db73a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:38:55, skipping insertion in model container [2022-10-17 10:38:55,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:38:55" (3/3) ... [2022-10-17 10:38:55,924 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_power.opt.i [2022-10-17 10:38:55,935 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:38:55,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:38:55,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:38:55,949 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:38:56,108 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:38:56,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 151 transitions, 322 flow [2022-10-17 10:38:56,299 INFO L130 PetriNetUnfolder]: 2/147 cut-off events. [2022-10-17 10:38:56,301 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:38:56,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 2/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-10-17 10:38:56,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 151 transitions, 322 flow [2022-10-17 10:38:56,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 131 transitions, 274 flow [2022-10-17 10:38:56,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:38:56,354 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;@3179e8cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:38:56,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-17 10:38:56,487 INFO L130 PetriNetUnfolder]: 1/130 cut-off events. [2022-10-17 10:38:56,488 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:38:56,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:38:56,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:56,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:38:56,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1729338412, now seen corresponding path program 1 times [2022-10-17 10:38:56,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:56,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398251709] [2022-10-17 10:38:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:56,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:57,846 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 10:38:57,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:57,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398251709] [2022-10-17 10:38:57,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398251709] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:57,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:57,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:38:57,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767495772] [2022-10-17 10:38:57,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:57,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:38:57,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:57,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:38:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:38:57,913 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 151 [2022-10-17 10:38:57,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 131 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 10:38:57,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:38:57,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 151 [2022-10-17 10:38:57,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:38:59,778 INFO L130 PetriNetUnfolder]: 747/1571 cut-off events. [2022-10-17 10:38:59,778 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-10-17 10:38:59,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2745 conditions, 1571 events. 747/1571 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9564 event pairs, 403 based on Foata normal form. 44/1562 useless extension candidates. Maximal degree in co-relation 2669. Up to 585 conditions per place. [2022-10-17 10:38:59,795 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 24 selfloop transitions, 2 changer transitions 37/175 dead transitions. [2022-10-17 10:38:59,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 175 transitions, 497 flow [2022-10-17 10:38:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:38:59,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:38:59,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1228 transitions. [2022-10-17 10:38:59,817 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9036055923473142 [2022-10-17 10:38:59,818 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1228 transitions. [2022-10-17 10:38:59,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1228 transitions. [2022-10-17 10:38:59,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:38:59,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1228 transitions. [2022-10-17 10:38:59,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.44444444444446) internal successors, (1228), 9 states have internal predecessors, (1228), 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 10:38:59,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 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 10:38:59,849 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 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 10:38:59,851 INFO L175 Difference]: Start difference. First operand has 143 places, 131 transitions, 274 flow. Second operand 9 states and 1228 transitions. [2022-10-17 10:38:59,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 175 transitions, 497 flow [2022-10-17 10:38:59,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 175 transitions, 490 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:38:59,863 INFO L231 Difference]: Finished difference. Result has 154 places, 130 transitions, 288 flow [2022-10-17 10:38:59,866 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=288, PETRI_PLACES=154, PETRI_TRANSITIONS=130} [2022-10-17 10:38:59,869 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 11 predicate places. [2022-10-17 10:38:59,870 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 130 transitions, 288 flow [2022-10-17 10:38:59,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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 10:38:59,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:38:59,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:59,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:38:59,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:38:59,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:59,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1257587371, now seen corresponding path program 1 times [2022-10-17 10:38:59,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:59,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727368985] [2022-10-17 10:38:59,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:59,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:00,422 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 10:39:00,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:00,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727368985] [2022-10-17 10:39:00,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727368985] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:00,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:00,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:39:00,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771439602] [2022-10-17 10:39:00,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:00,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:39:00,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:39:00,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:39:00,440 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 151 [2022-10-17 10:39:00,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 130 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 129.16666666666666) internal successors, (775), 6 states have internal predecessors, (775), 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 10:39:00,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:39:00,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 151 [2022-10-17 10:39:00,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:39:02,076 INFO L130 PetriNetUnfolder]: 1240/2443 cut-off events. [2022-10-17 10:39:02,076 INFO L131 PetriNetUnfolder]: For 565/565 co-relation queries the response was YES. [2022-10-17 10:39:02,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4931 conditions, 2443 events. 1240/2443 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 15498 event pairs, 318 based on Foata normal form. 48/2401 useless extension candidates. Maximal degree in co-relation 4850. Up to 1092 conditions per place. [2022-10-17 10:39:02,102 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 25 selfloop transitions, 3 changer transitions 43/181 dead transitions. [2022-10-17 10:39:02,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 181 transitions, 555 flow [2022-10-17 10:39:02,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:39:02,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:39:02,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1216 transitions. [2022-10-17 10:39:02,107 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8947755702722591 [2022-10-17 10:39:02,108 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1216 transitions. [2022-10-17 10:39:02,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1216 transitions. [2022-10-17 10:39:02,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:39:02,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1216 transitions. [2022-10-17 10:39:02,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.11111111111111) internal successors, (1216), 9 states have internal predecessors, (1216), 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 10:39:02,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 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 10:39:02,120 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 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 10:39:02,120 INFO L175 Difference]: Start difference. First operand has 154 places, 130 transitions, 288 flow. Second operand 9 states and 1216 transitions. [2022-10-17 10:39:02,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 181 transitions, 555 flow [2022-10-17 10:39:02,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 181 transitions, 521 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-10-17 10:39:02,144 INFO L231 Difference]: Finished difference. Result has 155 places, 132 transitions, 315 flow [2022-10-17 10:39:02,144 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=315, PETRI_PLACES=155, PETRI_TRANSITIONS=132} [2022-10-17 10:39:02,145 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 12 predicate places. [2022-10-17 10:39:02,145 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 132 transitions, 315 flow [2022-10-17 10:39:02,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.16666666666666) internal successors, (775), 6 states have internal predecessors, (775), 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 10:39:02,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:39:02,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:39:02,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:39:02,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:39:02,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash 825397300, now seen corresponding path program 1 times [2022-10-17 10:39:02,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:02,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097678159] [2022-10-17 10:39:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:02,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:02,904 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 10:39:02,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:02,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097678159] [2022-10-17 10:39:02,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097678159] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:02,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:02,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:39:02,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586294054] [2022-10-17 10:39:02,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:02,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:39:02,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:02,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:39:02,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:39:02,910 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 151 [2022-10-17 10:39:02,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 132 transitions, 315 flow. Second operand has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 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 10:39:02,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:39:02,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 151 [2022-10-17 10:39:02,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:39:03,959 INFO L130 PetriNetUnfolder]: 662/1471 cut-off events. [2022-10-17 10:39:03,959 INFO L131 PetriNetUnfolder]: For 1019/1027 co-relation queries the response was YES. [2022-10-17 10:39:03,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3251 conditions, 1471 events. 662/1471 cut-off events. For 1019/1027 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8789 event pairs, 206 based on Foata normal form. 32/1440 useless extension candidates. Maximal degree in co-relation 3168. Up to 525 conditions per place. [2022-10-17 10:39:03,976 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 20 selfloop transitions, 3 changer transitions 31/168 dead transitions. [2022-10-17 10:39:03,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 168 transitions, 517 flow [2022-10-17 10:39:03,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:39:03,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:39:03,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1346 transitions. [2022-10-17 10:39:03,982 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8913907284768212 [2022-10-17 10:39:03,983 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1346 transitions. [2022-10-17 10:39:03,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1346 transitions. [2022-10-17 10:39:03,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:39:03,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1346 transitions. [2022-10-17 10:39:03,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.6) internal successors, (1346), 10 states have internal predecessors, (1346), 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 10:39:03,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 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 10:39:03,995 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 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 10:39:03,995 INFO L175 Difference]: Start difference. First operand has 155 places, 132 transitions, 315 flow. Second operand 10 states and 1346 transitions. [2022-10-17 10:39:03,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 168 transitions, 517 flow [2022-10-17 10:39:04,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 168 transitions, 500 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-10-17 10:39:04,005 INFO L231 Difference]: Finished difference. Result has 161 places, 132 transitions, 328 flow [2022-10-17 10:39:04,005 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=328, PETRI_PLACES=161, PETRI_TRANSITIONS=132} [2022-10-17 10:39:04,006 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 18 predicate places. [2022-10-17 10:39:04,006 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 132 transitions, 328 flow [2022-10-17 10:39:04,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 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 10:39:04,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:39:04,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:39:04,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:39:04,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:39:04,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:04,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1890765941, now seen corresponding path program 1 times [2022-10-17 10:39:04,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:04,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923862496] [2022-10-17 10:39:04,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:04,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:04,542 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 10:39:04,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:04,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923862496] [2022-10-17 10:39:04,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923862496] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:04,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:04,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:39:04,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579446706] [2022-10-17 10:39:04,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:04,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:39:04,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:04,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:39:04,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:39:04,547 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 151 [2022-10-17 10:39:04,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 132 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 129.5) internal successors, (777), 6 states have internal predecessors, (777), 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 10:39:04,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:39:04,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 151 [2022-10-17 10:39:04,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:39:05,902 INFO L130 PetriNetUnfolder]: 1160/2401 cut-off events. [2022-10-17 10:39:05,903 INFO L131 PetriNetUnfolder]: For 2144/2160 co-relation queries the response was YES. [2022-10-17 10:39:05,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5659 conditions, 2401 events. 1160/2401 cut-off events. For 2144/2160 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15820 event pairs, 454 based on Foata normal form. 40/2347 useless extension candidates. Maximal degree in co-relation 5571. Up to 750 conditions per place. [2022-10-17 10:39:05,930 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 30 selfloop transitions, 3 changer transitions 34/177 dead transitions. [2022-10-17 10:39:05,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 177 transitions, 627 flow [2022-10-17 10:39:05,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:39:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:39:05,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1211 transitions. [2022-10-17 10:39:05,937 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8910963944076526 [2022-10-17 10:39:05,940 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1211 transitions. [2022-10-17 10:39:05,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1211 transitions. [2022-10-17 10:39:05,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:39:05,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1211 transitions. [2022-10-17 10:39:05,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.55555555555554) internal successors, (1211), 9 states have internal predecessors, (1211), 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 10:39:05,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 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 10:39:05,951 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 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 10:39:05,951 INFO L175 Difference]: Start difference. First operand has 161 places, 132 transitions, 328 flow. Second operand 9 states and 1211 transitions. [2022-10-17 10:39:05,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 177 transitions, 627 flow [2022-10-17 10:39:05,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 177 transitions, 573 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-10-17 10:39:05,973 INFO L231 Difference]: Finished difference. Result has 161 places, 132 transitions, 331 flow [2022-10-17 10:39:05,973 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=331, PETRI_PLACES=161, PETRI_TRANSITIONS=132} [2022-10-17 10:39:05,974 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 18 predicate places. [2022-10-17 10:39:05,974 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 132 transitions, 331 flow [2022-10-17 10:39:05,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.5) internal successors, (777), 6 states have internal predecessors, (777), 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 10:39:05,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:39:05,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:39:05,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:39:05,976 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:39:05,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:05,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1337080367, now seen corresponding path program 1 times [2022-10-17 10:39:05,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:05,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319788181] [2022-10-17 10:39:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:05,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:06,493 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 10:39:06,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:06,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319788181] [2022-10-17 10:39:06,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319788181] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:06,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:06,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:39:06,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163124981] [2022-10-17 10:39:06,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:06,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:39:06,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:06,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:39:06,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:39:06,498 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 151 [2022-10-17 10:39:06,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 132 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 128.28571428571428) internal successors, (898), 7 states have internal predecessors, (898), 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 10:39:06,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:39:06,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 151 [2022-10-17 10:39:06,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:39:07,945 INFO L130 PetriNetUnfolder]: 1364/2991 cut-off events. [2022-10-17 10:39:07,945 INFO L131 PetriNetUnfolder]: For 3715/3747 co-relation queries the response was YES. [2022-10-17 10:39:07,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6909 conditions, 2991 events. 1364/2991 cut-off events. For 3715/3747 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 22306 event pairs, 342 based on Foata normal form. 40/2874 useless extension candidates. Maximal degree in co-relation 6821. Up to 989 conditions per place. [2022-10-17 10:39:07,984 INFO L137 encePairwiseOnDemand]: 142/151 looper letters, 29 selfloop transitions, 5 changer transitions 23/166 dead transitions. [2022-10-17 10:39:07,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 166 transitions, 593 flow [2022-10-17 10:39:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:39:07,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:39:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 940 transitions. [2022-10-17 10:39:07,990 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8893093661305582 [2022-10-17 10:39:07,990 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 940 transitions. [2022-10-17 10:39:07,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 940 transitions. [2022-10-17 10:39:07,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:39:07,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 940 transitions. [2022-10-17 10:39:07,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.28571428571428) internal successors, (940), 7 states have internal predecessors, (940), 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 10:39:07,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 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 10:39:07,998 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 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 10:39:07,999 INFO L175 Difference]: Start difference. First operand has 161 places, 132 transitions, 331 flow. Second operand 7 states and 940 transitions. [2022-10-17 10:39:07,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 166 transitions, 593 flow [2022-10-17 10:39:08,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 166 transitions, 553 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-10-17 10:39:08,023 INFO L231 Difference]: Finished difference. Result has 158 places, 132 transitions, 333 flow [2022-10-17 10:39:08,024 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=158, PETRI_TRANSITIONS=132} [2022-10-17 10:39:08,026 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 15 predicate places. [2022-10-17 10:39:08,026 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 132 transitions, 333 flow [2022-10-17 10:39:08,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.28571428571428) internal successors, (898), 7 states have internal predecessors, (898), 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 10:39:08,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:39:08,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:39:08,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:39:08,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:39:08,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:08,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2089469487, now seen corresponding path program 2 times [2022-10-17 10:39:08,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:08,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855965565] [2022-10-17 10:39:08,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:08,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:08,585 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 10:39:08,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:08,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855965565] [2022-10-17 10:39:08,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855965565] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:08,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:08,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:39:08,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259171243] [2022-10-17 10:39:08,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:08,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:39:08,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:08,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:39:08,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:39:08,589 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 151 [2022-10-17 10:39:08,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 132 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 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 10:39:08,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:39:08,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 151 [2022-10-17 10:39:08,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:39:12,106 INFO L130 PetriNetUnfolder]: 5684/9837 cut-off events. [2022-10-17 10:39:12,106 INFO L131 PetriNetUnfolder]: For 2074/2106 co-relation queries the response was YES. [2022-10-17 10:39:12,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19733 conditions, 9837 events. 5684/9837 cut-off events. For 2074/2106 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 74588 event pairs, 245 based on Foata normal form. 0/9558 useless extension candidates. Maximal degree in co-relation 19645. Up to 3567 conditions per place. [2022-10-17 10:39:12,188 INFO L137 encePairwiseOnDemand]: 140/151 looper letters, 35 selfloop transitions, 7 changer transitions 55/206 dead transitions. [2022-10-17 10:39:12,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 206 transitions, 686 flow [2022-10-17 10:39:12,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:39:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:39:12,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1349 transitions. [2022-10-17 10:39:12,196 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8933774834437086 [2022-10-17 10:39:12,196 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1349 transitions. [2022-10-17 10:39:12,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1349 transitions. [2022-10-17 10:39:12,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:39:12,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1349 transitions. [2022-10-17 10:39:12,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 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 10:39:12,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 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 10:39:12,212 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 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 10:39:12,212 INFO L175 Difference]: Start difference. First operand has 158 places, 132 transitions, 333 flow. Second operand 10 states and 1349 transitions. [2022-10-17 10:39:12,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 206 transitions, 686 flow [2022-10-17 10:39:12,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 206 transitions, 668 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-10-17 10:39:12,233 INFO L231 Difference]: Finished difference. Result has 164 places, 135 transitions, 381 flow [2022-10-17 10:39:12,233 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=381, PETRI_PLACES=164, PETRI_TRANSITIONS=135} [2022-10-17 10:39:12,236 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 21 predicate places. [2022-10-17 10:39:12,237 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 135 transitions, 381 flow [2022-10-17 10:39:12,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 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 10:39:12,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:39:12,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:39:12,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:39:12,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:39:12,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:12,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1882374478, now seen corresponding path program 1 times [2022-10-17 10:39:12,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:12,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826842308] [2022-10-17 10:39:12,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:12,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:12,910 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 10:39:12,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:12,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826842308] [2022-10-17 10:39:12,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826842308] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:12,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:12,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:39:12,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980147600] [2022-10-17 10:39:12,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:12,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:39:12,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:12,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:39:12,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:39:12,920 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 151 [2022-10-17 10:39:12,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 135 transitions, 381 flow. Second operand has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 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 10:39:12,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:39:12,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 151 [2022-10-17 10:39:12,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:39:15,092 INFO L130 PetriNetUnfolder]: 2595/4978 cut-off events. [2022-10-17 10:39:15,093 INFO L131 PetriNetUnfolder]: For 6905/6956 co-relation queries the response was YES. [2022-10-17 10:39:15,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14982 conditions, 4978 events. 2595/4978 cut-off events. For 6905/6956 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 36504 event pairs, 168 based on Foata normal form. 148/5075 useless extension candidates. Maximal degree in co-relation 14892. Up to 1585 conditions per place. [2022-10-17 10:39:15,135 INFO L137 encePairwiseOnDemand]: 141/151 looper letters, 41 selfloop transitions, 11 changer transitions 43/204 dead transitions. [2022-10-17 10:39:15,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 204 transitions, 885 flow [2022-10-17 10:39:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:39:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:39:15,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1347 transitions. [2022-10-17 10:39:15,141 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8920529801324504 [2022-10-17 10:39:15,141 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1347 transitions. [2022-10-17 10:39:15,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1347 transitions. [2022-10-17 10:39:15,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:39:15,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1347 transitions. [2022-10-17 10:39:15,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.7) internal successors, (1347), 10 states have internal predecessors, (1347), 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 10:39:15,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 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 10:39:15,153 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 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 10:39:15,153 INFO L175 Difference]: Start difference. First operand has 164 places, 135 transitions, 381 flow. Second operand 10 states and 1347 transitions. [2022-10-17 10:39:15,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 204 transitions, 885 flow [2022-10-17 10:39:15,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 204 transitions, 860 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-10-17 10:39:15,191 INFO L231 Difference]: Finished difference. Result has 168 places, 139 transitions, 469 flow [2022-10-17 10:39:15,191 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=469, PETRI_PLACES=168, PETRI_TRANSITIONS=139} [2022-10-17 10:39:15,192 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 25 predicate places. [2022-10-17 10:39:15,192 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 139 transitions, 469 flow [2022-10-17 10:39:15,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 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 10:39:15,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:39:15,193 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, 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 10:39:15,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:39:15,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:39:15,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:15,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1538640216, now seen corresponding path program 1 times [2022-10-17 10:39:15,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:15,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882135961] [2022-10-17 10:39:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:15,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:15,939 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 10:39:15,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:15,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882135961] [2022-10-17 10:39:15,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882135961] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:15,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:15,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:39:15,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034027753] [2022-10-17 10:39:15,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:15,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:39:15,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:15,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:39:15,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:39:15,944 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 151 [2022-10-17 10:39:15,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 139 transitions, 469 flow. Second operand has 8 states, 8 states have (on average 127.25) internal successors, (1018), 8 states have internal predecessors, (1018), 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 10:39:15,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:39:15,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 151 [2022-10-17 10:39:15,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:39:17,106 INFO L130 PetriNetUnfolder]: 981/2271 cut-off events. [2022-10-17 10:39:17,107 INFO L131 PetriNetUnfolder]: For 6967/6984 co-relation queries the response was YES. [2022-10-17 10:39:17,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7931 conditions, 2271 events. 981/2271 cut-off events. For 6967/6984 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16117 event pairs, 65 based on Foata normal form. 73/2319 useless extension candidates. Maximal degree in co-relation 7837. Up to 655 conditions per place. [2022-10-17 10:39:17,123 INFO L137 encePairwiseOnDemand]: 141/151 looper letters, 47 selfloop transitions, 15 changer transitions 43/214 dead transitions. [2022-10-17 10:39:17,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 214 transitions, 1161 flow [2022-10-17 10:39:17,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:39:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:39:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1482 transitions. [2022-10-17 10:39:17,130 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8922335942203492 [2022-10-17 10:39:17,130 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1482 transitions. [2022-10-17 10:39:17,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1482 transitions. [2022-10-17 10:39:17,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:39:17,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1482 transitions. [2022-10-17 10:39:17,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 134.72727272727272) internal successors, (1482), 11 states have internal predecessors, (1482), 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 10:39:17,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 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 10:39:17,143 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 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 10:39:17,143 INFO L175 Difference]: Start difference. First operand has 168 places, 139 transitions, 469 flow. Second operand 11 states and 1482 transitions. [2022-10-17 10:39:17,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 214 transitions, 1161 flow [2022-10-17 10:39:17,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 214 transitions, 981 flow, removed 79 selfloop flow, removed 9 redundant places. [2022-10-17 10:39:17,188 INFO L231 Difference]: Finished difference. Result has 171 places, 143 transitions, 519 flow [2022-10-17 10:39:17,189 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=519, PETRI_PLACES=171, PETRI_TRANSITIONS=143} [2022-10-17 10:39:17,190 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 28 predicate places. [2022-10-17 10:39:17,190 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 143 transitions, 519 flow [2022-10-17 10:39:17,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 127.25) internal successors, (1018), 8 states have internal predecessors, (1018), 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 10:39:17,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:39:17,191 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, 1, 1, 1, 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 10:39:17,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:39:17,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:39:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1143836405, now seen corresponding path program 1 times [2022-10-17 10:39:17,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:17,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354710786] [2022-10-17 10:39:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:17,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:39:17,775 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 10:39:17,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:39:17,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354710786] [2022-10-17 10:39:17,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354710786] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:39:17,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:39:17,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:39:17,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842340427] [2022-10-17 10:39:17,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:39:17,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:39:17,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:17,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:39:17,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:39:17,780 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 151 [2022-10-17 10:39:17,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 143 transitions, 519 flow. Second operand has 7 states, 7 states have (on average 128.85714285714286) internal successors, (902), 7 states have internal predecessors, (902), 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 10:39:17,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:39:17,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 151 [2022-10-17 10:39:17,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:39:18,630 INFO L130 PetriNetUnfolder]: 449/1697 cut-off events. [2022-10-17 10:39:18,630 INFO L131 PetriNetUnfolder]: For 4123/4489 co-relation queries the response was YES. [2022-10-17 10:39:18,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4711 conditions, 1697 events. 449/1697 cut-off events. For 4123/4489 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 13151 event pairs, 98 based on Foata normal form. 58/1706 useless extension candidates. Maximal degree in co-relation 4615. Up to 354 conditions per place. [2022-10-17 10:39:18,642 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 38 selfloop transitions, 5 changer transitions 19/182 dead transitions. [2022-10-17 10:39:18,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 182 transitions, 747 flow [2022-10-17 10:39:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:39:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 10:39:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1070 transitions. [2022-10-17 10:39:18,646 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8857615894039735 [2022-10-17 10:39:18,646 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1070 transitions. [2022-10-17 10:39:18,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1070 transitions. [2022-10-17 10:39:18,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:39:18,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1070 transitions. [2022-10-17 10:39:18,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 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 10:39:18,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 151.0) internal successors, (1359), 9 states have internal predecessors, (1359), 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 10:39:18,656 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 151.0) internal successors, (1359), 9 states have internal predecessors, (1359), 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 10:39:18,656 INFO L175 Difference]: Start difference. First operand has 171 places, 143 transitions, 519 flow. Second operand 8 states and 1070 transitions. [2022-10-17 10:39:18,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 182 transitions, 747 flow [2022-10-17 10:39:18,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 182 transitions, 662 flow, removed 29 selfloop flow, removed 10 redundant places. [2022-10-17 10:39:18,686 INFO L231 Difference]: Finished difference. Result has 169 places, 145 transitions, 467 flow [2022-10-17 10:39:18,686 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=467, PETRI_PLACES=169, PETRI_TRANSITIONS=145} [2022-10-17 10:39:18,687 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 26 predicate places. [2022-10-17 10:39:18,687 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 145 transitions, 467 flow [2022-10-17 10:39:18,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.85714285714286) internal successors, (902), 7 states have internal predecessors, (902), 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 10:39:18,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:39:18,688 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, 1, 1, 1, 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 10:39:18,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:39:18,689 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:39:18,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:39:18,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1561242797, now seen corresponding path program 2 times [2022-10-17 10:39:18,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:39:18,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679590730] [2022-10-17 10:39:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:39:18,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat