./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8 --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 f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- 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-e04fb08 [2022-11-16 11:53:06,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:53:06,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:53:06,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:53:06,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:53:06,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:53:06,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:53:06,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:53:06,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:53:06,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:53:06,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:53:06,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:53:06,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:53:06,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:53:06,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:53:06,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:53:06,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:53:06,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:53:06,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:53:06,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:53:06,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:53:06,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:53:06,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:53:06,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:53:06,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:53:06,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:53:06,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:53:06,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:53:06,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:53:06,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:53:06,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:53:06,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:53:06,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:53:06,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:53:06,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:53:06,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:53:06,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:53:06,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:53:06,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:53:06,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:53:06,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:53:06,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:53:06,350 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:53:06,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:53:06,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:53:06,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:53:06,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:53:06,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:53:06,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:53:06,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:53:06,354 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:53:06,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:53:06,355 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:53:06,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:53:06,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:53:06,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:53:06,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:53:06,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:53:06,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:53:06,357 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:53:06,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:53:06,357 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:53:06,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:53:06,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:53:06,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:53:06,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:53:06,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:53:06,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:53:06,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:53:06,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:53:06,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:53:06,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:53:06,361 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:53:06,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:53:06,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:53:06,362 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_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2022-11-16 11:53:06,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:53:06,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:53:06,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:53:06,771 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:53:06,773 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:53:06,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-16 11:53:06,862 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/data/0404300e8/e69c800264364ef3850de9918d11085f/FLAGc87acc0b1 [2022-11-16 11:53:07,539 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:53:07,540 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-16 11:53:07,552 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/data/0404300e8/e69c800264364ef3850de9918d11085f/FLAGc87acc0b1 [2022-11-16 11:53:07,857 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/data/0404300e8/e69c800264364ef3850de9918d11085f [2022-11-16 11:53:07,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:53:07,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:53:07,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:53:07,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:53:07,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:53:07,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:53:07" (1/1) ... [2022-11-16 11:53:07,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69dcb9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:07, skipping insertion in model container [2022-11-16 11:53:07,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:53:07" (1/1) ... [2022-11-16 11:53:07,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:53:07,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:53:08,295 WARN L229 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_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-16 11:53:08,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:53:08,319 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:53:08,393 WARN L229 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_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-16 11:53:08,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:53:08,417 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:53:08,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:08 WrapperNode [2022-11-16 11:53:08,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:53:08,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:53:08,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:53:08,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:53:08,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:08" (1/1) ... [2022-11-16 11:53:08,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:08" (1/1) ... [2022-11-16 11:53:08,507 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 255 [2022-11-16 11:53:08,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:53:08,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:53:08,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:53:08,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:53:08,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:08" (1/1) ... [2022-11-16 11:53:08,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:08" (1/1) ... [2022-11-16 11:53:08,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:08" (1/1) ... [2022-11-16 11:53:08,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:08" (1/1) ... [2022-11-16 11:53:08,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:08" (1/1) ... [2022-11-16 11:53:08,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:08" (1/1) ... [2022-11-16 11:53:08,568 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:08" (1/1) ... [2022-11-16 11:53:08,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:08" (1/1) ... [2022-11-16 11:53:08,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:53:08,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:53:08,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:53:08,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:53:08,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:08" (1/1) ... [2022-11-16 11:53:08,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:53:08,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:08,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:53:08,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_095c9b45-5de7-4d58-8ff6-36a200c7fbdb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:53:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:53:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:53:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:53:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:53:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:53:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:53:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:53:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:53:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:53:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:53:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:53:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:53:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:53:08,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:53:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:53:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:53:08,687 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:53:08,849 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:53:08,853 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:53:09,372 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:53:09,592 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:53:09,592 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:53:09,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:53:09 BoogieIcfgContainer [2022-11-16 11:53:09,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:53:09,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:53:09,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:53:09,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:53:09,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:53:07" (1/3) ... [2022-11-16 11:53:09,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd732cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:53:09, skipping insertion in model container [2022-11-16 11:53:09,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:08" (2/3) ... [2022-11-16 11:53:09,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd732cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:53:09, skipping insertion in model container [2022-11-16 11:53:09,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:53:09" (3/3) ... [2022-11-16 11:53:09,609 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2022-11-16 11:53:09,620 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:53:09,633 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:53:09,634 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:53:09,634 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:53:09,705 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:53:09,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 152 transitions, 328 flow [2022-11-16 11:53:09,884 INFO L130 PetriNetUnfolder]: 2/149 cut-off events. [2022-11-16 11:53:09,884 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:53:09,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 2/149 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2022-11-16 11:53:09,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 152 transitions, 328 flow [2022-11-16 11:53:09,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 138 transitions, 294 flow [2022-11-16 11:53:09,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:53:09,924 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;@69ba8e47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:53:09,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 11:53:10,029 INFO L130 PetriNetUnfolder]: 2/137 cut-off events. [2022-11-16 11:53:10,033 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:53:10,038 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:10,039 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:10,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:10,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:10,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1309877266, now seen corresponding path program 1 times [2022-11-16 11:53:10,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:10,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700574406] [2022-11-16 11:53:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:10,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:12,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:12,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700574406] [2022-11-16 11:53:12,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700574406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:12,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:12,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 11:53:12,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271860104] [2022-11-16 11:53:12,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:12,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:53:12,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:12,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:53:12,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:53:12,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 152 [2022-11-16 11:53:12,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:12,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 152 [2022-11-16 11:53:12,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:14,547 INFO L130 PetriNetUnfolder]: 1125/2967 cut-off events. [2022-11-16 11:53:14,548 INFO L131 PetriNetUnfolder]: For 430/430 co-relation queries the response was YES. [2022-11-16 11:53:14,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5172 conditions, 2967 events. 1125/2967 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 23000 event pairs, 576 based on Foata normal form. 7/2936 useless extension candidates. Maximal degree in co-relation 4849. Up to 899 conditions per place. [2022-11-16 11:53:14,580 INFO L137 encePairwiseOnDemand]: 132/152 looper letters, 126 selfloop transitions, 21 changer transitions 21/259 dead transitions. [2022-11-16 11:53:14,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 259 transitions, 926 flow [2022-11-16 11:53:14,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:53:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:53:14,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2360 transitions. [2022-11-16 11:53:14,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7393483709273183 [2022-11-16 11:53:14,613 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2360 transitions. [2022-11-16 11:53:14,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2360 transitions. [2022-11-16 11:53:14,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:14,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2360 transitions. [2022-11-16 11:53:14,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.38095238095238) internal successors, (2360), 21 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,655 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,657 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 294 flow. Second operand 21 states and 2360 transitions. [2022-11-16 11:53:14,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 259 transitions, 926 flow [2022-11-16 11:53:14,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 259 transitions, 878 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:53:14,674 INFO L231 Difference]: Finished difference. Result has 166 places, 150 transitions, 384 flow [2022-11-16 11:53:14,676 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=384, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2022-11-16 11:53:14,681 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 20 predicate places. [2022-11-16 11:53:14,682 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 384 flow [2022-11-16 11:53:14,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:14,684 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:14,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:53:14,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:14,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:14,686 INFO L85 PathProgramCache]: Analyzing trace with hash 392733310, now seen corresponding path program 2 times [2022-11-16 11:53:14,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:14,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373400732] [2022-11-16 11:53:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:14,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:16,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:16,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373400732] [2022-11-16 11:53:16,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373400732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:16,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:16,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:53:16,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094513623] [2022-11-16 11:53:16,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:16,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:53:16,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:16,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:53:16,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:53:16,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-16 11:53:16,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 384 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:16,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:16,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-16 11:53:16,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:19,709 INFO L130 PetriNetUnfolder]: 3897/8430 cut-off events. [2022-11-16 11:53:19,710 INFO L131 PetriNetUnfolder]: For 386/388 co-relation queries the response was YES. [2022-11-16 11:53:19,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15675 conditions, 8430 events. 3897/8430 cut-off events. For 386/388 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 71609 event pairs, 1968 based on Foata normal form. 78/8257 useless extension candidates. Maximal degree in co-relation 15641. Up to 3483 conditions per place. [2022-11-16 11:53:19,783 INFO L137 encePairwiseOnDemand]: 134/152 looper letters, 149 selfloop transitions, 45 changer transitions 0/300 dead transitions. [2022-11-16 11:53:19,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 300 transitions, 1083 flow [2022-11-16 11:53:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:53:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:53:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1743 transitions. [2022-11-16 11:53:19,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7644736842105263 [2022-11-16 11:53:19,790 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1743 transitions. [2022-11-16 11:53:19,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1743 transitions. [2022-11-16 11:53:19,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:19,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1743 transitions. [2022-11-16 11:53:19,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 116.2) internal successors, (1743), 15 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:19,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:19,808 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:19,808 INFO L175 Difference]: Start difference. First operand has 166 places, 150 transitions, 384 flow. Second operand 15 states and 1743 transitions. [2022-11-16 11:53:19,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 300 transitions, 1083 flow [2022-11-16 11:53:19,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 300 transitions, 1073 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 11:53:19,828 INFO L231 Difference]: Finished difference. Result has 173 places, 198 transitions, 686 flow [2022-11-16 11:53:19,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=686, PETRI_PLACES=173, PETRI_TRANSITIONS=198} [2022-11-16 11:53:19,830 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 27 predicate places. [2022-11-16 11:53:19,830 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 198 transitions, 686 flow [2022-11-16 11:53:19,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:19,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:19,831 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:19,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:53:19,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:19,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:19,838 INFO L85 PathProgramCache]: Analyzing trace with hash 558693998, now seen corresponding path program 3 times [2022-11-16 11:53:19,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:19,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787094659] [2022-11-16 11:53:19,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:19,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:20,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:20,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787094659] [2022-11-16 11:53:20,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787094659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:20,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:20,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:20,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655951460] [2022-11-16 11:53:20,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:20,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:20,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:20,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:20,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:20,286 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 152 [2022-11-16 11:53:20,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 198 transitions, 686 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:20,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:20,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 152 [2022-11-16 11:53:20,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:21,955 INFO L130 PetriNetUnfolder]: 2597/6418 cut-off events. [2022-11-16 11:53:21,955 INFO L131 PetriNetUnfolder]: For 4591/4835 co-relation queries the response was YES. [2022-11-16 11:53:21,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16193 conditions, 6418 events. 2597/6418 cut-off events. For 4591/4835 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 57563 event pairs, 1518 based on Foata normal form. 144/6301 useless extension candidates. Maximal degree in co-relation 13688. Up to 3243 conditions per place. [2022-11-16 11:53:22,037 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 70 selfloop transitions, 2 changer transitions 0/220 dead transitions. [2022-11-16 11:53:22,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 220 transitions, 922 flow [2022-11-16 11:53:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2022-11-16 11:53:22,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8925438596491229 [2022-11-16 11:53:22,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2022-11-16 11:53:22,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2022-11-16 11:53:22,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:22,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2022-11-16 11:53:22,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:22,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:22,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:22,047 INFO L175 Difference]: Start difference. First operand has 173 places, 198 transitions, 686 flow. Second operand 3 states and 407 transitions. [2022-11-16 11:53:22,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 220 transitions, 922 flow [2022-11-16 11:53:22,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 220 transitions, 918 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:53:22,094 INFO L231 Difference]: Finished difference. Result has 174 places, 198 transitions, 692 flow [2022-11-16 11:53:22,094 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=174, PETRI_TRANSITIONS=198} [2022-11-16 11:53:22,097 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 28 predicate places. [2022-11-16 11:53:22,097 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 198 transitions, 692 flow [2022-11-16 11:53:22,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:22,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:22,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:22,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:53:22,099 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:22,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:22,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1633143796, now seen corresponding path program 4 times [2022-11-16 11:53:22,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:22,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380670068] [2022-11-16 11:53:22,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:22,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:22,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:22,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380670068] [2022-11-16 11:53:22,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380670068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:22,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:22,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:22,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883597438] [2022-11-16 11:53:22,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:22,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:22,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:22,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:22,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:22,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 152 [2022-11-16 11:53:22,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 198 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:22,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:22,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 152 [2022-11-16 11:53:22,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:24,181 INFO L130 PetriNetUnfolder]: 2592/6569 cut-off events. [2022-11-16 11:53:24,182 INFO L131 PetriNetUnfolder]: For 5073/5254 co-relation queries the response was YES. [2022-11-16 11:53:24,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17005 conditions, 6569 events. 2592/6569 cut-off events. For 5073/5254 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 59200 event pairs, 1277 based on Foata normal form. 214/6560 useless extension candidates. Maximal degree in co-relation 14293. Up to 2872 conditions per place. [2022-11-16 11:53:24,294 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 71 selfloop transitions, 2 changer transitions 0/221 dead transitions. [2022-11-16 11:53:24,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 221 transitions, 951 flow [2022-11-16 11:53:24,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:24,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2022-11-16 11:53:24,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8925438596491229 [2022-11-16 11:53:24,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2022-11-16 11:53:24,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2022-11-16 11:53:24,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:24,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2022-11-16 11:53:24,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:24,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:24,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:24,309 INFO L175 Difference]: Start difference. First operand has 174 places, 198 transitions, 692 flow. Second operand 3 states and 407 transitions. [2022-11-16 11:53:24,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 221 transitions, 951 flow [2022-11-16 11:53:24,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 221 transitions, 947 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:53:24,400 INFO L231 Difference]: Finished difference. Result has 175 places, 198 transitions, 698 flow [2022-11-16 11:53:24,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=698, PETRI_PLACES=175, PETRI_TRANSITIONS=198} [2022-11-16 11:53:24,405 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 29 predicate places. [2022-11-16 11:53:24,405 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 198 transitions, 698 flow [2022-11-16 11:53:24,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:24,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:24,406 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:24,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:53:24,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:24,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:24,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1313151022, now seen corresponding path program 5 times [2022-11-16 11:53:24,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:24,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830250681] [2022-11-16 11:53:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:24,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:24,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:24,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830250681] [2022-11-16 11:53:24,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830250681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:24,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:24,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:24,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139441687] [2022-11-16 11:53:24,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:24,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:24,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:24,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:24,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:24,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 152 [2022-11-16 11:53:24,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 198 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:24,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:24,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 152 [2022-11-16 11:53:24,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:26,646 INFO L130 PetriNetUnfolder]: 2449/6597 cut-off events. [2022-11-16 11:53:26,646 INFO L131 PetriNetUnfolder]: For 4873/4984 co-relation queries the response was YES. [2022-11-16 11:53:26,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17329 conditions, 6597 events. 2449/6597 cut-off events. For 4873/4984 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 61328 event pairs, 1513 based on Foata normal form. 140/6545 useless extension candidates. Maximal degree in co-relation 14772. Up to 2698 conditions per place. [2022-11-16 11:53:26,746 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 67 selfloop transitions, 2 changer transitions 0/216 dead transitions. [2022-11-16 11:53:26,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 216 transitions, 917 flow [2022-11-16 11:53:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2022-11-16 11:53:26,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8925438596491229 [2022-11-16 11:53:26,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2022-11-16 11:53:26,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2022-11-16 11:53:26,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:26,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2022-11-16 11:53:26,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:26,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:26,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:26,754 INFO L175 Difference]: Start difference. First operand has 175 places, 198 transitions, 698 flow. Second operand 3 states and 407 transitions. [2022-11-16 11:53:26,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 216 transitions, 917 flow [2022-11-16 11:53:26,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 216 transitions, 909 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 11:53:26,805 INFO L231 Difference]: Finished difference. Result has 176 places, 197 transitions, 697 flow [2022-11-16 11:53:26,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=697, PETRI_PLACES=176, PETRI_TRANSITIONS=197} [2022-11-16 11:53:26,810 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 30 predicate places. [2022-11-16 11:53:26,810 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 197 transitions, 697 flow [2022-11-16 11:53:26,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:26,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:26,811 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:26,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:53:26,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:26,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1805367584, now seen corresponding path program 6 times [2022-11-16 11:53:26,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:26,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719915890] [2022-11-16 11:53:26,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:26,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:27,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:27,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719915890] [2022-11-16 11:53:27,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719915890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:27,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:27,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 11:53:27,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646578303] [2022-11-16 11:53:27,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:27,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:53:27,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:27,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:53:27,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:53:27,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 152 [2022-11-16 11:53:27,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 197 transitions, 697 flow. Second operand has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:27,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:27,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 152 [2022-11-16 11:53:27,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:31,573 INFO L130 PetriNetUnfolder]: 4425/10845 cut-off events. [2022-11-16 11:53:31,586 INFO L131 PetriNetUnfolder]: For 9126/9292 co-relation queries the response was YES. [2022-11-16 11:53:31,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29315 conditions, 10845 events. 4425/10845 cut-off events. For 9126/9292 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 104169 event pairs, 1733 based on Foata normal form. 41/10625 useless extension candidates. Maximal degree in co-relation 25958. Up to 2900 conditions per place. [2022-11-16 11:53:31,777 INFO L137 encePairwiseOnDemand]: 136/152 looper letters, 197 selfloop transitions, 32 changer transitions 16/359 dead transitions. [2022-11-16 11:53:31,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 359 transitions, 1845 flow [2022-11-16 11:53:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:53:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:53:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1730 transitions. [2022-11-16 11:53:31,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7587719298245614 [2022-11-16 11:53:31,784 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1730 transitions. [2022-11-16 11:53:31,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1730 transitions. [2022-11-16 11:53:31,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:31,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1730 transitions. [2022-11-16 11:53:31,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 115.33333333333333) internal successors, (1730), 15 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:31,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:31,801 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:31,802 INFO L175 Difference]: Start difference. First operand has 176 places, 197 transitions, 697 flow. Second operand 15 states and 1730 transitions. [2022-11-16 11:53:31,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 359 transitions, 1845 flow [2022-11-16 11:53:31,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 359 transitions, 1839 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:53:31,880 INFO L231 Difference]: Finished difference. Result has 195 places, 218 transitions, 918 flow [2022-11-16 11:53:31,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=918, PETRI_PLACES=195, PETRI_TRANSITIONS=218} [2022-11-16 11:53:31,885 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 49 predicate places. [2022-11-16 11:53:31,885 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 218 transitions, 918 flow [2022-11-16 11:53:31,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:31,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:31,887 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:31,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:53:31,888 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:31,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:31,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1620198498, now seen corresponding path program 7 times [2022-11-16 11:53:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:31,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639842215] [2022-11-16 11:53:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:31,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:33,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:33,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:33,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639842215] [2022-11-16 11:53:33,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639842215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:33,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:33,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:53:33,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128728578] [2022-11-16 11:53:33,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:33,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:53:33,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:33,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:53:33,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:53:33,270 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-16 11:53:33,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 218 transitions, 918 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:33,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:33,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-16 11:53:33,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:36,802 INFO L130 PetriNetUnfolder]: 4585/11672 cut-off events. [2022-11-16 11:53:36,802 INFO L131 PetriNetUnfolder]: For 15016/15354 co-relation queries the response was YES. [2022-11-16 11:53:36,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34060 conditions, 11672 events. 4585/11672 cut-off events. For 15016/15354 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 114849 event pairs, 2612 based on Foata normal form. 23/11273 useless extension candidates. Maximal degree in co-relation 33962. Up to 6758 conditions per place. [2022-11-16 11:53:37,016 INFO L137 encePairwiseOnDemand]: 141/152 looper letters, 129 selfloop transitions, 25 changer transitions 0/281 dead transitions. [2022-11-16 11:53:37,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 281 transitions, 1502 flow [2022-11-16 11:53:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:53:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:53:37,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 928 transitions. [2022-11-16 11:53:37,021 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2022-11-16 11:53:37,021 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 928 transitions. [2022-11-16 11:53:37,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 928 transitions. [2022-11-16 11:53:37,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:37,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 928 transitions. [2022-11-16 11:53:37,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,031 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,031 INFO L175 Difference]: Start difference. First operand has 195 places, 218 transitions, 918 flow. Second operand 8 states and 928 transitions. [2022-11-16 11:53:37,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 281 transitions, 1502 flow [2022-11-16 11:53:37,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 281 transitions, 1488 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-16 11:53:37,335 INFO L231 Difference]: Finished difference. Result has 197 places, 239 transitions, 1116 flow [2022-11-16 11:53:37,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1116, PETRI_PLACES=197, PETRI_TRANSITIONS=239} [2022-11-16 11:53:37,337 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 51 predicate places. [2022-11-16 11:53:37,337 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 239 transitions, 1116 flow [2022-11-16 11:53:37,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:37,338 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:37,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:53:37,339 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:37,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash -215910526, now seen corresponding path program 8 times [2022-11-16 11:53:37,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:37,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681856801] [2022-11-16 11:53:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:37,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:38,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:38,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681856801] [2022-11-16 11:53:38,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681856801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:38,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:38,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:53:38,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317986020] [2022-11-16 11:53:38,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:38,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:53:38,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:38,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:53:38,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:53:38,320 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-16 11:53:38,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 239 transitions, 1116 flow. Second operand has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:38,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:38,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-16 11:53:38,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:43,300 INFO L130 PetriNetUnfolder]: 6382/15523 cut-off events. [2022-11-16 11:53:43,300 INFO L131 PetriNetUnfolder]: For 30071/30408 co-relation queries the response was YES. [2022-11-16 11:53:43,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49133 conditions, 15523 events. 6382/15523 cut-off events. For 30071/30408 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 155278 event pairs, 2095 based on Foata normal form. 124/15150 useless extension candidates. Maximal degree in co-relation 46958. Up to 6983 conditions per place. [2022-11-16 11:53:43,551 INFO L137 encePairwiseOnDemand]: 135/152 looper letters, 211 selfloop transitions, 99 changer transitions 0/437 dead transitions. [2022-11-16 11:53:43,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 437 transitions, 2849 flow [2022-11-16 11:53:43,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:53:43,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:53:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2398 transitions. [2022-11-16 11:53:43,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7512531328320802 [2022-11-16 11:53:43,560 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2398 transitions. [2022-11-16 11:53:43,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2398 transitions. [2022-11-16 11:53:43,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:43,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2398 transitions. [2022-11-16 11:53:43,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 114.19047619047619) internal successors, (2398), 21 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:43,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:43,580 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:43,580 INFO L175 Difference]: Start difference. First operand has 197 places, 239 transitions, 1116 flow. Second operand 21 states and 2398 transitions. [2022-11-16 11:53:43,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 437 transitions, 2849 flow [2022-11-16 11:53:43,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 437 transitions, 2797 flow, removed 24 selfloop flow, removed 2 redundant places. [2022-11-16 11:53:43,900 INFO L231 Difference]: Finished difference. Result has 226 places, 320 transitions, 2078 flow [2022-11-16 11:53:43,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2078, PETRI_PLACES=226, PETRI_TRANSITIONS=320} [2022-11-16 11:53:43,903 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 80 predicate places. [2022-11-16 11:53:43,904 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 320 transitions, 2078 flow [2022-11-16 11:53:43,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:43,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:43,905 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:43,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:53:43,906 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:43,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash -929476722, now seen corresponding path program 9 times [2022-11-16 11:53:43,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:43,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730824898] [2022-11-16 11:53:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:43,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:45,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:45,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730824898] [2022-11-16 11:53:45,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730824898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:45,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:45,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:53:45,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835173969] [2022-11-16 11:53:45,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:45,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:53:45,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:45,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:53:45,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:53:45,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-16 11:53:45,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 320 transitions, 2078 flow. Second operand has 10 states, 10 states have (on average 107.4) internal successors, (1074), 10 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:45,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:45,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-16 11:53:45,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:49,932 INFO L130 PetriNetUnfolder]: 6698/16307 cut-off events. [2022-11-16 11:53:49,933 INFO L131 PetriNetUnfolder]: For 63742/64247 co-relation queries the response was YES. [2022-11-16 11:53:50,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60578 conditions, 16307 events. 6698/16307 cut-off events. For 63742/64247 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 165932 event pairs, 3785 based on Foata normal form. 27/15754 useless extension candidates. Maximal degree in co-relation 58069. Up to 10301 conditions per place. [2022-11-16 11:53:50,183 INFO L137 encePairwiseOnDemand]: 139/152 looper letters, 240 selfloop transitions, 37 changer transitions 0/404 dead transitions. [2022-11-16 11:53:50,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 404 transitions, 3198 flow [2022-11-16 11:53:50,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:53:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:53:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1256 transitions. [2022-11-16 11:53:50,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7511961722488039 [2022-11-16 11:53:50,189 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1256 transitions. [2022-11-16 11:53:50,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1256 transitions. [2022-11-16 11:53:50,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:50,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1256 transitions. [2022-11-16 11:53:50,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.18181818181819) internal successors, (1256), 11 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:50,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:50,200 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:50,201 INFO L175 Difference]: Start difference. First operand has 226 places, 320 transitions, 2078 flow. Second operand 11 states and 1256 transitions. [2022-11-16 11:53:50,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 404 transitions, 3198 flow [2022-11-16 11:53:51,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 404 transitions, 2922 flow, removed 136 selfloop flow, removed 2 redundant places. [2022-11-16 11:53:51,088 INFO L231 Difference]: Finished difference. Result has 241 places, 350 transitions, 2271 flow [2022-11-16 11:53:51,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2271, PETRI_PLACES=241, PETRI_TRANSITIONS=350} [2022-11-16 11:53:51,089 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 95 predicate places. [2022-11-16 11:53:51,090 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 350 transitions, 2271 flow [2022-11-16 11:53:51,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.4) internal successors, (1074), 10 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:51,091 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:51,091 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:51,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:53:51,092 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:51,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:51,092 INFO L85 PathProgramCache]: Analyzing trace with hash 534821868, now seen corresponding path program 10 times [2022-11-16 11:53:51,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:51,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101708879] [2022-11-16 11:53:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:51,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:51,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:51,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101708879] [2022-11-16 11:53:51,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101708879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:51,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:51,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 11:53:51,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832006095] [2022-11-16 11:53:51,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:51,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:53:51,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:51,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:53:51,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:53:51,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 152 [2022-11-16 11:53:51,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 350 transitions, 2271 flow. Second operand has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:51,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:51,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 152 [2022-11-16 11:53:51,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:56,685 INFO L130 PetriNetUnfolder]: 7567/17672 cut-off events. [2022-11-16 11:53:56,686 INFO L131 PetriNetUnfolder]: For 69337/70032 co-relation queries the response was YES. [2022-11-16 11:53:56,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64530 conditions, 17672 events. 7567/17672 cut-off events. For 69337/70032 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 178011 event pairs, 2746 based on Foata normal form. 211/17465 useless extension candidates. Maximal degree in co-relation 62997. Up to 5204 conditions per place. [2022-11-16 11:53:57,056 INFO L137 encePairwiseOnDemand]: 136/152 looper letters, 337 selfloop transitions, 37 changer transitions 6/569 dead transitions. [2022-11-16 11:53:57,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 569 transitions, 4371 flow [2022-11-16 11:53:57,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:53:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:53:57,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1728 transitions. [2022-11-16 11:53:57,064 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7578947368421053 [2022-11-16 11:53:57,078 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1728 transitions. [2022-11-16 11:53:57,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1728 transitions. [2022-11-16 11:53:57,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:57,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1728 transitions. [2022-11-16 11:53:57,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 115.2) internal successors, (1728), 15 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:57,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:57,112 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:57,112 INFO L175 Difference]: Start difference. First operand has 241 places, 350 transitions, 2271 flow. Second operand 15 states and 1728 transitions. [2022-11-16 11:53:57,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 569 transitions, 4371 flow [2022-11-16 11:53:57,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 569 transitions, 4303 flow, removed 32 selfloop flow, removed 2 redundant places. [2022-11-16 11:53:57,835 INFO L231 Difference]: Finished difference. Result has 259 places, 357 transitions, 2367 flow [2022-11-16 11:53:57,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2367, PETRI_PLACES=259, PETRI_TRANSITIONS=357} [2022-11-16 11:53:57,837 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 113 predicate places. [2022-11-16 11:53:57,837 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 357 transitions, 2367 flow [2022-11-16 11:53:57,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:57,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:57,839 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:57,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:53:57,840 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:57,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:57,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1689956312, now seen corresponding path program 11 times [2022-11-16 11:53:57,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:57,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692693780] [2022-11-16 11:53:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:57,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:59,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:59,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692693780] [2022-11-16 11:53:59,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692693780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:59,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:59,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:53:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482963456] [2022-11-16 11:53:59,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:59,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:53:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:59,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:53:59,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:53:59,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-16 11:53:59,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 357 transitions, 2367 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:59,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:59,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-16 11:53:59,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:04,264 INFO L130 PetriNetUnfolder]: 6396/15698 cut-off events. [2022-11-16 11:54:04,264 INFO L131 PetriNetUnfolder]: For 64612/65184 co-relation queries the response was YES. [2022-11-16 11:54:04,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59863 conditions, 15698 events. 6396/15698 cut-off events. For 64612/65184 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 159029 event pairs, 2648 based on Foata normal form. 193/15370 useless extension candidates. Maximal degree in co-relation 59726. Up to 8951 conditions per place. [2022-11-16 11:54:04,501 INFO L137 encePairwiseOnDemand]: 140/152 looper letters, 202 selfloop transitions, 72 changer transitions 0/408 dead transitions. [2022-11-16 11:54:04,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 408 transitions, 3310 flow [2022-11-16 11:54:04,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:54:04,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:54:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 925 transitions. [2022-11-16 11:54:04,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7606907894736842 [2022-11-16 11:54:04,506 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 925 transitions. [2022-11-16 11:54:04,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 925 transitions. [2022-11-16 11:54:04,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:04,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 925 transitions. [2022-11-16 11:54:04,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:04,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:04,514 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:04,515 INFO L175 Difference]: Start difference. First operand has 259 places, 357 transitions, 2367 flow. Second operand 8 states and 925 transitions. [2022-11-16 11:54:04,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 408 transitions, 3310 flow [2022-11-16 11:54:05,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 408 transitions, 3255 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-11-16 11:54:05,079 INFO L231 Difference]: Finished difference. Result has 260 places, 364 transitions, 2659 flow [2022-11-16 11:54:05,080 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2659, PETRI_PLACES=260, PETRI_TRANSITIONS=364} [2022-11-16 11:54:05,081 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 114 predicate places. [2022-11-16 11:54:05,081 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 364 transitions, 2659 flow [2022-11-16 11:54:05,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:05,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:05,082 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:05,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:54:05,083 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:54:05,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:05,084 INFO L85 PathProgramCache]: Analyzing trace with hash -624269310, now seen corresponding path program 12 times [2022-11-16 11:54:05,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:05,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113258862] [2022-11-16 11:54:05,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:05,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:06,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:06,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113258862] [2022-11-16 11:54:06,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113258862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:06,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:06,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 11:54:06,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127855306] [2022-11-16 11:54:06,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:06,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:54:06,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:06,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:54:06,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:54:06,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-16 11:54:06,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 364 transitions, 2659 flow. Second operand has 14 states, 14 states have (on average 106.14285714285714) internal successors, (1486), 14 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:06,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:06,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-16 11:54:06,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:18,321 INFO L130 PetriNetUnfolder]: 15844/37503 cut-off events. [2022-11-16 11:54:18,321 INFO L131 PetriNetUnfolder]: For 183716/185155 co-relation queries the response was YES. [2022-11-16 11:54:18,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148272 conditions, 37503 events. 15844/37503 cut-off events. For 183716/185155 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 431196 event pairs, 4095 based on Foata normal form. 769/37177 useless extension candidates. Maximal degree in co-relation 147298. Up to 7865 conditions per place. [2022-11-16 11:54:18,876 INFO L137 encePairwiseOnDemand]: 130/152 looper letters, 475 selfloop transitions, 328 changer transitions 32/969 dead transitions. [2022-11-16 11:54:18,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 969 transitions, 9250 flow [2022-11-16 11:54:18,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:54:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 11:54:18,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2629 transitions. [2022-11-16 11:54:18,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7861842105263158 [2022-11-16 11:54:18,885 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2629 transitions. [2022-11-16 11:54:18,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2629 transitions. [2022-11-16 11:54:18,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:18,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2629 transitions. [2022-11-16 11:54:18,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 119.5) internal successors, (2629), 22 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:18,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:18,903 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:18,903 INFO L175 Difference]: Start difference. First operand has 260 places, 364 transitions, 2659 flow. Second operand 22 states and 2629 transitions. [2022-11-16 11:54:18,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 969 transitions, 9250 flow [2022-11-16 11:54:22,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 969 transitions, 9107 flow, removed 27 selfloop flow, removed 3 redundant places. [2022-11-16 11:54:22,081 INFO L231 Difference]: Finished difference. Result has 296 places, 634 transitions, 6855 flow [2022-11-16 11:54:22,081 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2598, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6855, PETRI_PLACES=296, PETRI_TRANSITIONS=634} [2022-11-16 11:54:22,082 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 150 predicate places. [2022-11-16 11:54:22,082 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 634 transitions, 6855 flow [2022-11-16 11:54:22,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.14285714285714) internal successors, (1486), 14 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:22,083 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:22,084 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:22,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:54:22,084 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:54:22,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:22,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1905254318, now seen corresponding path program 13 times [2022-11-16 11:54:22,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:22,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326131598] [2022-11-16 11:54:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:22,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:22,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:22,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326131598] [2022-11-16 11:54:22,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326131598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:22,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:22,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:54:22,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207817515] [2022-11-16 11:54:22,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:22,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:54:22,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:22,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:54:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:54:22,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-16 11:54:22,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 634 transitions, 6855 flow. Second operand has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:22,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:22,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-16 11:54:22,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand