./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix006_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/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_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix006_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/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_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/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 a555daf8b3d43d9709cd95be6561d3a47f75ee906fd0e296710c365eb1f220a2 --- 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 11:04:31,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:04:31,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:04:31,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:04:31,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:04:31,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:04:31,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:04:31,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:04:31,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:04:31,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:04:31,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:04:31,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:04:31,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:04:31,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:04:31,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:04:31,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:04:31,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:04:31,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:04:31,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:04:31,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:04:31,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:04:31,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:04:31,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:04:31,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:04:31,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:04:31,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:04:31,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:04:31,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:04:31,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:04:31,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:04:31,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:04:31,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:04:31,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:04:31,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:04:31,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:04:31,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:04:31,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:04:31,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:04:31,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:04:31,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:04:31,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:04:31,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:04:31,330 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:04:31,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:04:31,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:04:31,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:04:31,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:04:31,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:04:31,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:04:31,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:04:31,337 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:04:31,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:04:31,338 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:04:31,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:04:31,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:04:31,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:04:31,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:04:31,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:04:31,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:04:31,340 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:04:31,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:04:31,341 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:04:31,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:04:31,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:04:31,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:04:31,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:04:31,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:04:31,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:04:31,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:04:31,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:04:31,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:04:31,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:04:31,345 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:04:31,345 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:04:31,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:04:31,346 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_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a555daf8b3d43d9709cd95be6561d3a47f75ee906fd0e296710c365eb1f220a2 [2022-10-17 11:04:31,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:04:31,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:04:31,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:04:31,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:04:31,665 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:04:31,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/mix006_tso.oepc.i [2022-10-17 11:04:31,744 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/bin/uautomizer-J5u9QxTXDZ/data/f1199ce66/8e6d68f9019c42d5a633fd03cb59195e/FLAGf817b80d5 [2022-10-17 11:04:32,372 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:04:32,375 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/sv-benchmarks/c/pthread-wmm/mix006_tso.oepc.i [2022-10-17 11:04:32,392 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/bin/uautomizer-J5u9QxTXDZ/data/f1199ce66/8e6d68f9019c42d5a633fd03cb59195e/FLAGf817b80d5 [2022-10-17 11:04:32,644 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/bin/uautomizer-J5u9QxTXDZ/data/f1199ce66/8e6d68f9019c42d5a633fd03cb59195e [2022-10-17 11:04:32,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:04:32,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:04:32,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:04:32,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:04:32,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:04:32,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:04:32" (1/1) ... [2022-10-17 11:04:32,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6f8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:32, skipping insertion in model container [2022-10-17 11:04:32,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:04:32" (1/1) ... [2022-10-17 11:04:32,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:04:32,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:04:33,006 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_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/sv-benchmarks/c/pthread-wmm/mix006_tso.oepc.i[949,962] [2022-10-17 11:04:33,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:04:33,442 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:04:33,455 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_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/sv-benchmarks/c/pthread-wmm/mix006_tso.oepc.i[949,962] [2022-10-17 11:04:33,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:04:33,563 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:04:33,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33 WrapperNode [2022-10-17 11:04:33,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:04:33,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:04:33,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:04:33,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:04:33,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,647 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 712 [2022-10-17 11:04:33,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:04:33,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:04:33,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:04:33,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:04:33,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,695 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:04:33,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:04:33,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:04:33,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:04:33,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (1/1) ... [2022-10-17 11:04:33,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:04:33,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:04:33,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:04:33,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b17ab3f-d55c-4234-9356-a9ee0a2ff296/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:04:33,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:04:33,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 11:04:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:04:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:04:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:04:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 11:04:33,820 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 11:04:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 11:04:33,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 11:04:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 11:04:33,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 11:04:33,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:04:33,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 11:04:33,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:04:33,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:04:33,825 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 11:04:34,108 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:04:34,110 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:04:35,508 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:04:36,720 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:04:36,721 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 11:04:36,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:04:36 BoogieIcfgContainer [2022-10-17 11:04:36,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:04:36,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:04:36,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:04:36,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:04:36,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:04:32" (1/3) ... [2022-10-17 11:04:36,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5b0a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:04:36, skipping insertion in model container [2022-10-17 11:04:36,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:33" (2/3) ... [2022-10-17 11:04:36,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5b0a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:04:36, skipping insertion in model container [2022-10-17 11:04:36,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:04:36" (3/3) ... [2022-10-17 11:04:36,741 INFO L112 eAbstractionObserver]: Analyzing ICFG mix006_tso.oepc.i [2022-10-17 11:04:36,752 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 11:04:36,764 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:04:36,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-10-17 11:04:36,765 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 11:04:36,924 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 11:04:36,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 136 transitions, 287 flow [2022-10-17 11:04:37,100 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-10-17 11:04:37,101 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 11:04:37,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-10-17 11:04:37,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 136 transitions, 287 flow [2022-10-17 11:04:37,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 133 transitions, 275 flow [2022-10-17 11:04:37,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:04:37,150 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;@1bdb3d85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:04:37,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-10-17 11:04:37,191 INFO L130 PetriNetUnfolder]: 0/77 cut-off events. [2022-10-17 11:04:37,191 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 11:04:37,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:37,193 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] [2022-10-17 11:04:37,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-10-17 11:04:37,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1957471924, now seen corresponding path program 1 times [2022-10-17 11:04:37,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:37,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085488258] [2022-10-17 11:04:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:37,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:38,052 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 11:04:38,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:38,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085488258] [2022-10-17 11:04:38,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085488258] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:38,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:38,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:04:38,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745208906] [2022-10-17 11:04:38,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:38,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:04:38,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:38,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:04:38,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:04:38,101 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 136 [2022-10-17 11:04:38,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 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 11:04:38,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:38,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 136 [2022-10-17 11:04:38,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:39,076 INFO L130 PetriNetUnfolder]: 280/1579 cut-off events. [2022-10-17 11:04:39,076 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-10-17 11:04:39,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 1579 events. 280/1579 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 13180 event pairs, 186 based on Foata normal form. 54/1495 useless extension candidates. Maximal degree in co-relation 1983. Up to 377 conditions per place. [2022-10-17 11:04:39,102 INFO L137 encePairwiseOnDemand]: 131/136 looper letters, 21 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2022-10-17 11:04:39,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 137 transitions, 332 flow [2022-10-17 11:04:39,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:04:39,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 11:04:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2022-10-17 11:04:39,121 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.928921568627451 [2022-10-17 11:04:39,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2022-10-17 11:04:39,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2022-10-17 11:04:39,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:39,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2022-10-17 11:04:39,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 11:04:39,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 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 11:04:39,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 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 11:04:39,146 INFO L175 Difference]: Start difference. First operand has 141 places, 133 transitions, 275 flow. Second operand 3 states and 379 transitions. [2022-10-17 11:04:39,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 137 transitions, 332 flow [2022-10-17 11:04:39,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 137 transitions, 328 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 11:04:39,158 INFO L231 Difference]: Finished difference. Result has 138 places, 129 transitions, 268 flow [2022-10-17 11:04:39,161 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=138, PETRI_TRANSITIONS=129} [2022-10-17 11:04:39,166 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, -3 predicate places. [2022-10-17 11:04:39,167 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 129 transitions, 268 flow [2022-10-17 11:04:39,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 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 11:04:39,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:39,168 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] [2022-10-17 11:04:39,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:04:39,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-10-17 11:04:39,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:39,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1174989173, now seen corresponding path program 1 times [2022-10-17 11:04:39,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:39,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993193565] [2022-10-17 11:04:39,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:39,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:39,478 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 11:04:39,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:39,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993193565] [2022-10-17 11:04:39,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993193565] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:39,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:39,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:04:39,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150529180] [2022-10-17 11:04:39,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:39,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:04:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:39,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:04:39,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:04:39,484 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 136 [2022-10-17 11:04:39,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 129 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 11:04:39,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:39,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 136 [2022-10-17 11:04:39,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:39,992 INFO L130 PetriNetUnfolder]: 221/1273 cut-off events. [2022-10-17 11:04:39,992 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-10-17 11:04:39,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1683 conditions, 1273 events. 221/1273 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9972 event pairs, 84 based on Foata normal form. 0/1197 useless extension candidates. Maximal degree in co-relation 1614. Up to 268 conditions per place. [2022-10-17 11:04:40,004 INFO L137 encePairwiseOnDemand]: 133/136 looper letters, 19 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2022-10-17 11:04:40,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 135 transitions, 324 flow [2022-10-17 11:04:40,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:04:40,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 11:04:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2022-10-17 11:04:40,012 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9142156862745098 [2022-10-17 11:04:40,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2022-10-17 11:04:40,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2022-10-17 11:04:40,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:40,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2022-10-17 11:04:40,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 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 11:04:40,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 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 11:04:40,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 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 11:04:40,020 INFO L175 Difference]: Start difference. First operand has 138 places, 129 transitions, 268 flow. Second operand 3 states and 373 transitions. [2022-10-17 11:04:40,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 135 transitions, 324 flow [2022-10-17 11:04:40,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 135 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 11:04:40,028 INFO L231 Difference]: Finished difference. Result has 137 places, 128 transitions, 266 flow [2022-10-17 11:04:40,028 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=137, PETRI_TRANSITIONS=128} [2022-10-17 11:04:40,029 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, -4 predicate places. [2022-10-17 11:04:40,029 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 128 transitions, 266 flow [2022-10-17 11:04:40,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 11:04:40,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:40,031 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] [2022-10-17 11:04:40,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:04:40,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-10-17 11:04:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:40,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1155985654, now seen corresponding path program 1 times [2022-10-17 11:04:40,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:40,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489789932] [2022-10-17 11:04:40,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:40,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:40,592 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 11:04:40,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:40,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489789932] [2022-10-17 11:04:40,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489789932] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:40,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:40,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:04:40,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724447170] [2022-10-17 11:04:40,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:40,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:04:40,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:40,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:04:40,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:04:40,598 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 136 [2022-10-17 11:04:40,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 128 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 0 states have call successors, (0), 0 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 11:04:40,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:40,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 136 [2022-10-17 11:04:40,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:41,964 INFO L130 PetriNetUnfolder]: 745/2066 cut-off events. [2022-10-17 11:04:41,964 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2022-10-17 11:04:41,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 2066 events. 745/2066 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15774 event pairs, 127 based on Foata normal form. 0/2010 useless extension candidates. Maximal degree in co-relation 3255. Up to 449 conditions per place. [2022-10-17 11:04:41,979 INFO L137 encePairwiseOnDemand]: 130/136 looper letters, 23 selfloop transitions, 2 changer transitions 60/182 dead transitions. [2022-10-17 11:04:41,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 182 transitions, 528 flow [2022-10-17 11:04:41,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 11:04:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 11:04:41,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1075 transitions. [2022-10-17 11:04:41,984 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8782679738562091 [2022-10-17 11:04:41,985 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1075 transitions. [2022-10-17 11:04:41,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1075 transitions. [2022-10-17 11:04:41,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:41,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1075 transitions. [2022-10-17 11:04:41,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.44444444444444) internal successors, (1075), 9 states have internal predecessors, (1075), 0 states have call successors, (0), 0 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 11:04:41,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:41,998 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:41,998 INFO L175 Difference]: Start difference. First operand has 137 places, 128 transitions, 266 flow. Second operand 9 states and 1075 transitions. [2022-10-17 11:04:41,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 182 transitions, 528 flow [2022-10-17 11:04:42,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 182 transitions, 518 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 11:04:42,005 INFO L231 Difference]: Finished difference. Result has 150 places, 116 transitions, 258 flow [2022-10-17 11:04:42,006 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=258, PETRI_PLACES=150, PETRI_TRANSITIONS=116} [2022-10-17 11:04:42,008 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 9 predicate places. [2022-10-17 11:04:42,008 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 116 transitions, 258 flow [2022-10-17 11:04:42,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 0 states have call successors, (0), 0 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 11:04:42,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:42,010 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] [2022-10-17 11:04:42,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:04:42,011 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-10-17 11:04:42,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:42,012 INFO L85 PathProgramCache]: Analyzing trace with hash -560889338, now seen corresponding path program 1 times [2022-10-17 11:04:42,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:42,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785483025] [2022-10-17 11:04:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:42,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:43,418 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 11:04:43,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:43,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785483025] [2022-10-17 11:04:43,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785483025] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:43,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:43,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 11:04:43,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771711952] [2022-10-17 11:04:43,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:43,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 11:04:43,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 11:04:43,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-10-17 11:04:43,424 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 136 [2022-10-17 11:04:43,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 116 transitions, 258 flow. Second operand has 10 states, 10 states have (on average 108.6) internal successors, (1086), 10 states have internal predecessors, (1086), 0 states have call successors, (0), 0 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 11:04:43,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:43,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 136 [2022-10-17 11:04:43,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:44,805 INFO L130 PetriNetUnfolder]: 727/1515 cut-off events. [2022-10-17 11:04:44,805 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2022-10-17 11:04:44,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 1515 events. 727/1515 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8711 event pairs, 390 based on Foata normal form. 31/1475 useless extension candidates. Maximal degree in co-relation 3009. Up to 770 conditions per place. [2022-10-17 11:04:44,834 INFO L137 encePairwiseOnDemand]: 123/136 looper letters, 28 selfloop transitions, 11 changer transitions 49/181 dead transitions. [2022-10-17 11:04:44,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 181 transitions, 604 flow [2022-10-17 11:04:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 11:04:44,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-10-17 11:04:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1696 transitions. [2022-10-17 11:04:44,842 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8313725490196079 [2022-10-17 11:04:44,842 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1696 transitions. [2022-10-17 11:04:44,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1696 transitions. [2022-10-17 11:04:44,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:44,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1696 transitions. [2022-10-17 11:04:44,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 113.06666666666666) internal successors, (1696), 15 states have internal predecessors, (1696), 0 states have call successors, (0), 0 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 11:04:44,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 136.0) internal successors, (2176), 16 states have internal predecessors, (2176), 0 states have call successors, (0), 0 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 11:04:44,867 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 136.0) internal successors, (2176), 16 states have internal predecessors, (2176), 0 states have call successors, (0), 0 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 11:04:44,868 INFO L175 Difference]: Start difference. First operand has 150 places, 116 transitions, 258 flow. Second operand 15 states and 1696 transitions. [2022-10-17 11:04:44,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 181 transitions, 604 flow [2022-10-17 11:04:44,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 181 transitions, 560 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-10-17 11:04:44,895 INFO L231 Difference]: Finished difference. Result has 149 places, 123 transitions, 341 flow [2022-10-17 11:04:44,895 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=341, PETRI_PLACES=149, PETRI_TRANSITIONS=123} [2022-10-17 11:04:44,897 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 8 predicate places. [2022-10-17 11:04:44,903 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 123 transitions, 341 flow [2022-10-17 11:04:44,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.6) internal successors, (1086), 10 states have internal predecessors, (1086), 0 states have call successors, (0), 0 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 11:04:44,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:44,905 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] [2022-10-17 11:04:44,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:04:44,906 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-10-17 11:04:44,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:44,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1404084284, now seen corresponding path program 1 times [2022-10-17 11:04:44,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:44,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682769512] [2022-10-17 11:04:44,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:44,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:45,455 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 11:04:45,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:45,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682769512] [2022-10-17 11:04:45,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682769512] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:45,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:45,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:04:45,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76995625] [2022-10-17 11:04:45,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:45,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:04:45,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:45,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:04:45,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:04:45,460 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 136 [2022-10-17 11:04:45,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 123 transitions, 341 flow. Second operand has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 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 11:04:45,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:45,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 136 [2022-10-17 11:04:45,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:46,405 INFO L130 PetriNetUnfolder]: 508/1134 cut-off events. [2022-10-17 11:04:46,405 INFO L131 PetriNetUnfolder]: For 2321/2957 co-relation queries the response was YES. [2022-10-17 11:04:46,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 1134 events. 508/1134 cut-off events. For 2321/2957 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6350 event pairs, 114 based on Foata normal form. 33/1121 useless extension candidates. Maximal degree in co-relation 3341. Up to 438 conditions per place. [2022-10-17 11:04:46,423 INFO L137 encePairwiseOnDemand]: 130/136 looper letters, 40 selfloop transitions, 12 changer transitions 9/160 dead transitions. [2022-10-17 11:04:46,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 160 transitions, 676 flow [2022-10-17 11:04:46,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 11:04:46,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 11:04:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1057 transitions. [2022-10-17 11:04:46,428 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.863562091503268 [2022-10-17 11:04:46,429 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1057 transitions. [2022-10-17 11:04:46,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1057 transitions. [2022-10-17 11:04:46,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:46,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1057 transitions. [2022-10-17 11:04:46,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.44444444444444) internal successors, (1057), 9 states have internal predecessors, (1057), 0 states have call successors, (0), 0 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 11:04:46,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:46,438 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:46,439 INFO L175 Difference]: Start difference. First operand has 149 places, 123 transitions, 341 flow. Second operand 9 states and 1057 transitions. [2022-10-17 11:04:46,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 160 transitions, 676 flow [2022-10-17 11:04:46,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 160 transitions, 650 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-10-17 11:04:46,449 INFO L231 Difference]: Finished difference. Result has 146 places, 131 transitions, 434 flow [2022-10-17 11:04:46,450 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=434, PETRI_PLACES=146, PETRI_TRANSITIONS=131} [2022-10-17 11:04:46,450 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 5 predicate places. [2022-10-17 11:04:46,451 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 131 transitions, 434 flow [2022-10-17 11:04:46,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 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 11:04:46,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:46,452 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] [2022-10-17 11:04:46,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:04:46,453 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-10-17 11:04:46,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:46,453 INFO L85 PathProgramCache]: Analyzing trace with hash 382759823, now seen corresponding path program 1 times [2022-10-17 11:04:46,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:46,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101309434] [2022-10-17 11:04:46,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:46,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:47,029 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 11:04:47,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:47,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101309434] [2022-10-17 11:04:47,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101309434] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:47,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:47,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:04:47,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214194811] [2022-10-17 11:04:47,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:47,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:04:47,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:47,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:04:47,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:04:47,033 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 136 [2022-10-17 11:04:47,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 131 transitions, 434 flow. Second operand has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 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 11:04:47,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:47,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 136 [2022-10-17 11:04:47,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:49,180 INFO L130 PetriNetUnfolder]: 2213/4266 cut-off events. [2022-10-17 11:04:49,180 INFO L131 PetriNetUnfolder]: For 6585/6585 co-relation queries the response was YES. [2022-10-17 11:04:49,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11372 conditions, 4266 events. 2213/4266 cut-off events. For 6585/6585 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 29227 event pairs, 217 based on Foata normal form. 0/4178 useless extension candidates. Maximal degree in co-relation 11286. Up to 1151 conditions per place. [2022-10-17 11:04:49,226 INFO L137 encePairwiseOnDemand]: 126/136 looper letters, 65 selfloop transitions, 7 changer transitions 65/235 dead transitions. [2022-10-17 11:04:49,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 235 transitions, 1178 flow [2022-10-17 11:04:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 11:04:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 11:04:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1184 transitions. [2022-10-17 11:04:49,231 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8705882352941177 [2022-10-17 11:04:49,232 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1184 transitions. [2022-10-17 11:04:49,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1184 transitions. [2022-10-17 11:04:49,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:49,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1184 transitions. [2022-10-17 11:04:49,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.4) internal successors, (1184), 10 states have internal predecessors, (1184), 0 states have call successors, (0), 0 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 11:04:49,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 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 11:04:49,243 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 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 11:04:49,243 INFO L175 Difference]: Start difference. First operand has 146 places, 131 transitions, 434 flow. Second operand 10 states and 1184 transitions. [2022-10-17 11:04:49,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 235 transitions, 1178 flow [2022-10-17 11:04:49,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 235 transitions, 1168 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-10-17 11:04:49,261 INFO L231 Difference]: Finished difference. Result has 160 places, 135 transitions, 486 flow [2022-10-17 11:04:49,262 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=486, PETRI_PLACES=160, PETRI_TRANSITIONS=135} [2022-10-17 11:04:49,267 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 19 predicate places. [2022-10-17 11:04:49,274 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 135 transitions, 486 flow [2022-10-17 11:04:49,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 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 11:04:49,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:49,274 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] [2022-10-17 11:04:49,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:04:49,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-10-17 11:04:49,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:49,275 INFO L85 PathProgramCache]: Analyzing trace with hash -837011530, now seen corresponding path program 1 times [2022-10-17 11:04:49,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:49,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975110925] [2022-10-17 11:04:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:49,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:49,972 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 11:04:49,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:49,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975110925] [2022-10-17 11:04:49,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975110925] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:49,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:49,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:04:49,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67989760] [2022-10-17 11:04:49,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:49,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:04:49,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:49,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:04:49,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:04:49,977 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 136 [2022-10-17 11:04:49,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 135 transitions, 486 flow. Second operand has 7 states, 7 states have (on average 109.71428571428571) internal successors, (768), 7 states have internal predecessors, (768), 0 states have call successors, (0), 0 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 11:04:49,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:49,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 136 [2022-10-17 11:04:49,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:51,309 INFO L130 PetriNetUnfolder]: 944/2217 cut-off events. [2022-10-17 11:04:51,310 INFO L131 PetriNetUnfolder]: For 4346/4354 co-relation queries the response was YES. [2022-10-17 11:04:51,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6843 conditions, 2217 events. 944/2217 cut-off events. For 4346/4354 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15272 event pairs, 182 based on Foata normal form. 60/2263 useless extension candidates. Maximal degree in co-relation 6749. Up to 395 conditions per place. [2022-10-17 11:04:51,335 INFO L137 encePairwiseOnDemand]: 126/136 looper letters, 77 selfloop transitions, 18 changer transitions 47/236 dead transitions. [2022-10-17 11:04:51,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 236 transitions, 1346 flow [2022-10-17 11:04:51,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 11:04:51,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 11:04:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1304 transitions. [2022-10-17 11:04:51,341 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8716577540106952 [2022-10-17 11:04:51,341 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1304 transitions. [2022-10-17 11:04:51,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1304 transitions. [2022-10-17 11:04:51,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:51,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1304 transitions. [2022-10-17 11:04:51,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 118.54545454545455) internal successors, (1304), 11 states have internal predecessors, (1304), 0 states have call successors, (0), 0 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 11:04:51,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 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 11:04:51,354 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 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 11:04:51,354 INFO L175 Difference]: Start difference. First operand has 160 places, 135 transitions, 486 flow. Second operand 11 states and 1304 transitions. [2022-10-17 11:04:51,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 236 transitions, 1346 flow [2022-10-17 11:04:51,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 236 transitions, 1298 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-10-17 11:04:51,374 INFO L231 Difference]: Finished difference. Result has 168 places, 140 transitions, 569 flow [2022-10-17 11:04:51,374 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=569, PETRI_PLACES=168, PETRI_TRANSITIONS=140} [2022-10-17 11:04:51,375 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 27 predicate places. [2022-10-17 11:04:51,375 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 140 transitions, 569 flow [2022-10-17 11:04:51,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.71428571428571) internal successors, (768), 7 states have internal predecessors, (768), 0 states have call successors, (0), 0 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 11:04:51,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:51,377 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] [2022-10-17 11:04:51,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 11:04:51,377 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-10-17 11:04:51,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:51,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1768953524, now seen corresponding path program 1 times [2022-10-17 11:04:51,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:51,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403499278] [2022-10-17 11:04:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:51,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:52,098 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 11:04:52,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:52,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403499278] [2022-10-17 11:04:52,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403499278] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:52,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:52,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 11:04:52,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393592789] [2022-10-17 11:04:52,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:52,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 11:04:52,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:52,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 11:04:52,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:04:52,103 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 136 [2022-10-17 11:04:52,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 140 transitions, 569 flow. Second operand has 8 states, 8 states have (on average 109.625) internal successors, (877), 8 states have internal predecessors, (877), 0 states have call successors, (0), 0 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 11:04:52,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:52,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 136 [2022-10-17 11:04:52,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:53,340 INFO L130 PetriNetUnfolder]: 860/1959 cut-off events. [2022-10-17 11:04:53,341 INFO L131 PetriNetUnfolder]: For 5728/5728 co-relation queries the response was YES. [2022-10-17 11:04:53,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 1959 events. 860/1959 cut-off events. For 5728/5728 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13191 event pairs, 238 based on Foata normal form. 13/1951 useless extension candidates. Maximal degree in co-relation 6753. Up to 350 conditions per place. [2022-10-17 11:04:53,362 INFO L137 encePairwiseOnDemand]: 126/136 looper letters, 65 selfloop transitions, 22 changer transitions 36/217 dead transitions. [2022-10-17 11:04:53,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 217 transitions, 1269 flow [2022-10-17 11:04:53,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 11:04:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 11:04:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1606 transitions. [2022-10-17 11:04:53,370 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8434873949579832 [2022-10-17 11:04:53,370 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1606 transitions. [2022-10-17 11:04:53,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1606 transitions. [2022-10-17 11:04:53,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:53,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1606 transitions. [2022-10-17 11:04:53,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 114.71428571428571) internal successors, (1606), 14 states have internal predecessors, (1606), 0 states have call successors, (0), 0 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 11:04:53,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 136.0) internal successors, (2040), 15 states have internal predecessors, (2040), 0 states have call successors, (0), 0 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 11:04:53,385 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 136.0) internal successors, (2040), 15 states have internal predecessors, (2040), 0 states have call successors, (0), 0 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 11:04:53,386 INFO L175 Difference]: Start difference. First operand has 168 places, 140 transitions, 569 flow. Second operand 14 states and 1606 transitions. [2022-10-17 11:04:53,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 217 transitions, 1269 flow [2022-10-17 11:04:53,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 217 transitions, 1115 flow, removed 52 selfloop flow, removed 10 redundant places. [2022-10-17 11:04:53,434 INFO L231 Difference]: Finished difference. Result has 172 places, 141 transitions, 560 flow [2022-10-17 11:04:53,435 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=560, PETRI_PLACES=172, PETRI_TRANSITIONS=141} [2022-10-17 11:04:53,439 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 31 predicate places. [2022-10-17 11:04:53,439 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 141 transitions, 560 flow [2022-10-17 11:04:53,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 109.625) internal successors, (877), 8 states have internal predecessors, (877), 0 states have call successors, (0), 0 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 11:04:53,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:53,440 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 11:04:53,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 11:04:53,441 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-10-17 11:04:53,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:53,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1509665737, now seen corresponding path program 1 times [2022-10-17 11:04:53,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:53,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731973743] [2022-10-17 11:04:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:53,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:54,131 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 11:04:54,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:54,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731973743] [2022-10-17 11:04:54,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731973743] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:54,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:54,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:04:54,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902050537] [2022-10-17 11:04:54,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:54,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:04:54,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:54,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:04:54,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:04:54,136 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 136 [2022-10-17 11:04:54,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 141 transitions, 560 flow. Second operand has 7 states, 7 states have (on average 111.14285714285714) internal successors, (778), 7 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 11:04:54,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:54,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 136 [2022-10-17 11:04:54,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:54,834 INFO L130 PetriNetUnfolder]: 283/1349 cut-off events. [2022-10-17 11:04:54,834 INFO L131 PetriNetUnfolder]: For 2680/2800 co-relation queries the response was YES. [2022-10-17 11:04:54,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 1349 events. 283/1349 cut-off events. For 2680/2800 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11646 event pairs, 83 based on Foata normal form. 1/1271 useless extension candidates. Maximal degree in co-relation 3707. Up to 200 conditions per place. [2022-10-17 11:04:54,857 INFO L137 encePairwiseOnDemand]: 130/136 looper letters, 31 selfloop transitions, 1 changer transitions 19/167 dead transitions. [2022-10-17 11:04:54,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 167 transitions, 772 flow [2022-10-17 11:04:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 11:04:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 11:04:54,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 800 transitions. [2022-10-17 11:04:54,862 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8403361344537815 [2022-10-17 11:04:54,862 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 800 transitions. [2022-10-17 11:04:54,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 800 transitions. [2022-10-17 11:04:54,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:54,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 800 transitions. [2022-10-17 11:04:54,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 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 11:04:54,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 136.0) internal successors, (1088), 8 states have internal predecessors, (1088), 0 states have call successors, (0), 0 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 11:04:54,871 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 136.0) internal successors, (1088), 8 states have internal predecessors, (1088), 0 states have call successors, (0), 0 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 11:04:54,871 INFO L175 Difference]: Start difference. First operand has 172 places, 141 transitions, 560 flow. Second operand 7 states and 800 transitions. [2022-10-17 11:04:54,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 167 transitions, 772 flow [2022-10-17 11:04:54,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 167 transitions, 658 flow, removed 39 selfloop flow, removed 16 redundant places. [2022-10-17 11:04:54,909 INFO L231 Difference]: Finished difference. Result has 164 places, 141 transitions, 483 flow [2022-10-17 11:04:54,910 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=483, PETRI_PLACES=164, PETRI_TRANSITIONS=141} [2022-10-17 11:04:54,910 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 23 predicate places. [2022-10-17 11:04:54,910 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 141 transitions, 483 flow [2022-10-17 11:04:54,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.14285714285714) internal successors, (778), 7 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 11:04:54,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:54,911 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 11:04:54,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 11:04:54,911 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-10-17 11:04:54,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash -34698283, now seen corresponding path program 2 times [2022-10-17 11:04:54,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:54,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121007085] [2022-10-17 11:04:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:54,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:58,253 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 11:04:58,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:58,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121007085] [2022-10-17 11:04:58,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121007085] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:58,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:58,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 11:04:58,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8859474] [2022-10-17 11:04:58,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:58,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 11:04:58,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:58,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 11:04:58,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:04:58,266 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 136 [2022-10-17 11:04:58,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 141 transitions, 483 flow. Second operand has 11 states, 11 states have (on average 107.27272727272727) internal successors, (1180), 11 states have internal predecessors, (1180), 0 states have call successors, (0), 0 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 11:04:58,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:58,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 136 [2022-10-17 11:04:58,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand