./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro --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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- 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-8393723 [2022-11-18 19:52:50,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:52:50,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:52:50,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:52:50,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:52:50,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:52:50,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:52:50,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:52:50,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:52:50,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:52:50,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:52:50,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:52:50,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:52:50,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:52:50,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:52:50,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:52:50,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:52:50,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:52:50,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:52:50,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:52:50,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:52:50,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:52:50,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:52:50,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:52:50,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:52:50,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:52:50,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:52:50,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:52:50,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:52:50,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:52:50,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:52:50,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:52:50,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:52:50,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:52:50,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:52:50,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:52:50,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:52:50,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:52:50,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:52:50,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:52:50,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:52:50,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:52:50,908 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:52:50,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:52:50,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:52:50,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:52:50,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:52:50,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:52:50,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:52:50,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:52:50,913 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:52:50,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:52:50,913 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:52:50,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:52:50,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:52:50,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:52:50,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:52:50,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:52:50,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:52:50,915 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:52:50,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:52:50,916 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:52:50,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:52:50,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:52:50,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:52:50,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:52:50,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:52:50,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:52:50,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:52:50,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:52:50,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:52:50,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:52:50,919 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:52:50,919 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:52:50,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:52:50,919 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_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2022-11-18 19:52:51,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:52:51,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:52:51,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:52:51,289 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:52:51,290 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:52:51,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/queue_longer.i [2022-11-18 19:52:51,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/data/b820e26bf/40bb1fee9bc24f64b8e53a5e19f17ae4/FLAG9df599b9d [2022-11-18 19:52:52,006 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:52:52,007 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/sv-benchmarks/c/pthread/queue_longer.i [2022-11-18 19:52:52,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/data/b820e26bf/40bb1fee9bc24f64b8e53a5e19f17ae4/FLAG9df599b9d [2022-11-18 19:52:52,256 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/data/b820e26bf/40bb1fee9bc24f64b8e53a5e19f17ae4 [2022-11-18 19:52:52,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:52:52,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:52:52,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:52:52,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:52:52,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:52:52,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:52:52" (1/1) ... [2022-11-18 19:52:52,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562a830b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:52, skipping insertion in model container [2022-11-18 19:52:52,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:52:52" (1/1) ... [2022-11-18 19:52:52,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:52:52,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:52:52,916 WARN L234 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_4a1974cc-7b34-41e3-823f-888cf0f89a60/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-18 19:52:52,927 WARN L234 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_4a1974cc-7b34-41e3-823f-888cf0f89a60/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-18 19:52:52,935 WARN L234 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_4a1974cc-7b34-41e3-823f-888cf0f89a60/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-18 19:52:52,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:52:52,958 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:52:53,032 WARN L234 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_4a1974cc-7b34-41e3-823f-888cf0f89a60/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-18 19:52:53,037 WARN L234 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_4a1974cc-7b34-41e3-823f-888cf0f89a60/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-18 19:52:53,047 WARN L234 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_4a1974cc-7b34-41e3-823f-888cf0f89a60/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-18 19:52:53,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:52:53,128 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:52:53,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:53 WrapperNode [2022-11-18 19:52:53,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:52:53,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:52:53,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:52:53,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:52:53,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:53" (1/1) ... [2022-11-18 19:52:53,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:53" (1/1) ... [2022-11-18 19:52:53,225 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 241 [2022-11-18 19:52:53,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:52:53,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:52:53,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:52:53,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:52:53,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:53" (1/1) ... [2022-11-18 19:52:53,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:53" (1/1) ... [2022-11-18 19:52:53,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:53" (1/1) ... [2022-11-18 19:52:53,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:53" (1/1) ... [2022-11-18 19:52:53,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:53" (1/1) ... [2022-11-18 19:52:53,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:53" (1/1) ... [2022-11-18 19:52:53,278 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:53" (1/1) ... [2022-11-18 19:52:53,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:53" (1/1) ... [2022-11-18 19:52:53,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:52:53,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:52:53,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:52:53,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:52:53,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:53" (1/1) ... [2022-11-18 19:52:53,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:52:53,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:53,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:52:53,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a1974cc-7b34-41e3-823f-888cf0f89a60/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:52:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-18 19:52:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-18 19:52:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-18 19:52:53,394 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-18 19:52:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:52:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:52:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:52:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:52:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:52:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:52:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:52:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:52:53,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:52:53,397 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:52:53,621 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:52:53,623 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:52:54,178 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:52:54,192 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:52:54,192 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:52:54,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:52:54 BoogieIcfgContainer [2022-11-18 19:52:54,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:52:54,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:52:54,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:52:54,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:52:54,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:52:52" (1/3) ... [2022-11-18 19:52:54,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14851dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:52:54, skipping insertion in model container [2022-11-18 19:52:54,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:53" (2/3) ... [2022-11-18 19:52:54,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14851dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:52:54, skipping insertion in model container [2022-11-18 19:52:54,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:52:54" (3/3) ... [2022-11-18 19:52:54,205 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2022-11-18 19:52:54,228 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:52:54,239 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:52:54,239 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-18 19:52:54,240 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:52:54,393 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:52:54,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 272 transitions, 560 flow [2022-11-18 19:52:54,544 INFO L130 PetriNetUnfolder]: 15/270 cut-off events. [2022-11-18 19:52:54,545 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:52:54,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 270 events. 15/270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 361 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-11-18 19:52:54,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 272 transitions, 560 flow [2022-11-18 19:52:54,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 260 transitions, 529 flow [2022-11-18 19:52:54,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:52:54,600 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;@5a33938a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:52:54,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 19:52:54,628 INFO L130 PetriNetUnfolder]: 1/63 cut-off events. [2022-11-18 19:52:54,629 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:52:54,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:52:54,630 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] [2022-11-18 19:52:54,630 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 4 more)] === [2022-11-18 19:52:54,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1061260441, now seen corresponding path program 1 times [2022-11-18 19:52:54,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:54,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994729396] [2022-11-18 19:52:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:54,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:54,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:54,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994729396] [2022-11-18 19:52:54,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994729396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:54,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:54,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:52:54,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078071911] [2022-11-18 19:52:54,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:54,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:52:54,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:55,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:52:55,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:52:55,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 272 [2022-11-18 19:52:55,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 260 transitions, 529 flow. Second operand has 2 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:55,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:52:55,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 272 [2022-11-18 19:52:55,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:52:55,166 INFO L130 PetriNetUnfolder]: 10/249 cut-off events. [2022-11-18 19:52:55,166 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-18 19:52:55,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 249 events. 10/249 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 280 event pairs, 0 based on Foata normal form. 7/244 useless extension candidates. Maximal degree in co-relation 189. Up to 4 conditions per place. [2022-11-18 19:52:55,171 INFO L137 encePairwiseOnDemand]: 267/272 looper letters, 3 selfloop transitions, 0 changer transitions 0/249 dead transitions. [2022-11-18 19:52:55,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 249 transitions, 513 flow [2022-11-18 19:52:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:52:55,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 19:52:55,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 526 transitions. [2022-11-18 19:52:55,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9669117647058824 [2022-11-18 19:52:55,189 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 526 transitions. [2022-11-18 19:52:55,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 526 transitions. [2022-11-18 19:52:55,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:52:55,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 526 transitions. [2022-11-18 19:52:55,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:55,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:55,206 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:55,208 INFO L175 Difference]: Start difference. First operand has 252 places, 260 transitions, 529 flow. Second operand 2 states and 526 transitions. [2022-11-18 19:52:55,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 249 transitions, 513 flow [2022-11-18 19:52:55,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 249 transitions, 508 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:52:55,220 INFO L231 Difference]: Finished difference. Result has 244 places, 249 transitions, 502 flow [2022-11-18 19:52:55,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=502, PETRI_PLACES=244, PETRI_TRANSITIONS=249} [2022-11-18 19:52:55,227 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, -8 predicate places. [2022-11-18 19:52:55,227 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 249 transitions, 502 flow [2022-11-18 19:52:55,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:55,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:52:55,229 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] [2022-11-18 19:52:55,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:52:55,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:52:55,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:55,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1790375288, now seen corresponding path program 1 times [2022-11-18 19:52:55,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:55,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209786532] [2022-11-18 19:52:55,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:55,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:56,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:56,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209786532] [2022-11-18 19:52:56,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209786532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:56,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:56,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:52:56,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254972397] [2022-11-18 19:52:56,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:56,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:52:56,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:56,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:52:56,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:52:56,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 272 [2022-11-18 19:52:56,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 249 transitions, 502 flow. Second operand has 12 states, 12 states have (on average 197.75) internal successors, (2373), 12 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:56,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:52:56,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 272 [2022-11-18 19:52:56,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:52:58,031 INFO L130 PetriNetUnfolder]: 1003/4115 cut-off events. [2022-11-18 19:52:58,032 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-18 19:52:58,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5626 conditions, 4115 events. 1003/4115 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 33950 event pairs, 789 based on Foata normal form. 0/3829 useless extension candidates. Maximal degree in co-relation 5623. Up to 1435 conditions per place. [2022-11-18 19:52:58,066 INFO L137 encePairwiseOnDemand]: 259/272 looper letters, 52 selfloop transitions, 12 changer transitions 0/245 dead transitions. [2022-11-18 19:52:58,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 245 transitions, 622 flow [2022-11-18 19:52:58,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:52:58,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:52:58,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2600 transitions. [2022-11-18 19:52:58,073 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2022-11-18 19:52:58,073 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2600 transitions. [2022-11-18 19:52:58,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2600 transitions. [2022-11-18 19:52:58,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:52:58,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2600 transitions. [2022-11-18 19:52:58,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 200.0) internal successors, (2600), 13 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,092 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,093 INFO L175 Difference]: Start difference. First operand has 244 places, 249 transitions, 502 flow. Second operand 13 states and 2600 transitions. [2022-11-18 19:52:58,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 245 transitions, 622 flow [2022-11-18 19:52:58,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 245 transitions, 622 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:52:58,099 INFO L231 Difference]: Finished difference. Result has 253 places, 245 transitions, 518 flow [2022-11-18 19:52:58,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=518, PETRI_PLACES=253, PETRI_TRANSITIONS=245} [2022-11-18 19:52:58,101 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 1 predicate places. [2022-11-18 19:52:58,101 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 245 transitions, 518 flow [2022-11-18 19:52:58,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 197.75) internal successors, (2373), 12 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:52:58,103 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] [2022-11-18 19:52:58,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:52:58,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:52:58,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:58,105 INFO L85 PathProgramCache]: Analyzing trace with hash -932218503, now seen corresponding path program 1 times [2022-11-18 19:52:58,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:58,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171797892] [2022-11-18 19:52:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:58,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:58,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:58,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171797892] [2022-11-18 19:52:58,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171797892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:58,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:58,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:52:58,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279076109] [2022-11-18 19:52:58,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:58,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:52:58,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:58,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:52:58,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:52:58,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 272 [2022-11-18 19:52:58,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 245 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:52:58,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 272 [2022-11-18 19:52:58,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:52:58,368 INFO L130 PetriNetUnfolder]: 26/430 cut-off events. [2022-11-18 19:52:58,368 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:52:58,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 430 events. 26/430 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1078 event pairs, 2 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 493. Up to 13 conditions per place. [2022-11-18 19:52:58,373 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 9 selfloop transitions, 5 changer transitions 0/245 dead transitions. [2022-11-18 19:52:58,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 245 transitions, 550 flow [2022-11-18 19:52:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:52:58,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:52:58,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1007 transitions. [2022-11-18 19:52:58,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9255514705882353 [2022-11-18 19:52:58,379 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1007 transitions. [2022-11-18 19:52:58,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1007 transitions. [2022-11-18 19:52:58,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:52:58,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1007 transitions. [2022-11-18 19:52:58,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 272.0) internal successors, (1360), 5 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,386 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 272.0) internal successors, (1360), 5 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,387 INFO L175 Difference]: Start difference. First operand has 253 places, 245 transitions, 518 flow. Second operand 4 states and 1007 transitions. [2022-11-18 19:52:58,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 245 transitions, 550 flow [2022-11-18 19:52:58,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 245 transitions, 527 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 19:52:58,393 INFO L231 Difference]: Finished difference. Result has 244 places, 243 transitions, 501 flow [2022-11-18 19:52:58,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=501, PETRI_PLACES=244, PETRI_TRANSITIONS=243} [2022-11-18 19:52:58,396 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, -8 predicate places. [2022-11-18 19:52:58,397 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 243 transitions, 501 flow [2022-11-18 19:52:58,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:52:58,398 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] [2022-11-18 19:52:58,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:52:58,399 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:52:58,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:58,400 INFO L85 PathProgramCache]: Analyzing trace with hash -983005596, now seen corresponding path program 1 times [2022-11-18 19:52:58,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:58,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188983577] [2022-11-18 19:52:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:58,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:58,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:58,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:58,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188983577] [2022-11-18 19:52:58,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188983577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:58,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:58,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:52:58,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557751365] [2022-11-18 19:52:58,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:58,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:52:58,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:58,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:52:58,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:52:58,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 272 [2022-11-18 19:52:58,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 243 transitions, 501 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:52:58,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 272 [2022-11-18 19:52:58,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:52:58,767 INFO L130 PetriNetUnfolder]: 33/525 cut-off events. [2022-11-18 19:52:58,767 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-11-18 19:52:58,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 525 events. 33/525 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1261 event pairs, 2 based on Foata normal form. 0/491 useless extension candidates. Maximal degree in co-relation 580. Up to 23 conditions per place. [2022-11-18 19:52:58,771 INFO L137 encePairwiseOnDemand]: 268/272 looper letters, 10 selfloop transitions, 3 changer transitions 0/247 dead transitions. [2022-11-18 19:52:58,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 247 transitions, 538 flow [2022-11-18 19:52:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:52:58,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:52:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2022-11-18 19:52:58,775 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9473039215686274 [2022-11-18 19:52:58,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2022-11-18 19:52:58,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2022-11-18 19:52:58,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:52:58,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2022-11-18 19:52:58,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,782 INFO L175 Difference]: Start difference. First operand has 244 places, 243 transitions, 501 flow. Second operand 3 states and 773 transitions. [2022-11-18 19:52:58,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 247 transitions, 538 flow [2022-11-18 19:52:58,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 247 transitions, 528 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:52:58,788 INFO L231 Difference]: Finished difference. Result has 244 places, 244 transitions, 506 flow [2022-11-18 19:52:58,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=244, PETRI_TRANSITIONS=244} [2022-11-18 19:52:58,789 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, -8 predicate places. [2022-11-18 19:52:58,790 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 244 transitions, 506 flow [2022-11-18 19:52:58,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:52:58,791 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] [2022-11-18 19:52:58,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:52:58,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:52:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash 382761025, now seen corresponding path program 1 times [2022-11-18 19:52:58,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:58,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251244690] [2022-11-18 19:52:58,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:58,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:58,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:58,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251244690] [2022-11-18 19:52:58,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251244690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:58,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:58,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:52:58,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681540648] [2022-11-18 19:52:58,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:58,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:52:58,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:58,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:52:58,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:52:58,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 272 [2022-11-18 19:52:58,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 244 transitions, 506 flow. Second operand has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:58,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:52:58,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 272 [2022-11-18 19:52:58,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:52:59,107 INFO L130 PetriNetUnfolder]: 51/834 cut-off events. [2022-11-18 19:52:59,108 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-18 19:52:59,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 834 events. 51/834 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2995 event pairs, 7 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 938. Up to 27 conditions per place. [2022-11-18 19:52:59,114 INFO L137 encePairwiseOnDemand]: 267/272 looper letters, 15 selfloop transitions, 5 changer transitions 0/252 dead transitions. [2022-11-18 19:52:59,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 252 transitions, 569 flow [2022-11-18 19:52:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:52:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:52:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1271 transitions. [2022-11-18 19:52:59,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9345588235294118 [2022-11-18 19:52:59,119 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1271 transitions. [2022-11-18 19:52:59,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1271 transitions. [2022-11-18 19:52:59,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:52:59,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1271 transitions. [2022-11-18 19:52:59,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 254.2) internal successors, (1271), 5 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:59,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:59,127 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:59,128 INFO L175 Difference]: Start difference. First operand has 244 places, 244 transitions, 506 flow. Second operand 5 states and 1271 transitions. [2022-11-18 19:52:59,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 252 transitions, 569 flow [2022-11-18 19:52:59,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:52:59,133 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 533 flow [2022-11-18 19:52:59,134 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=533, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2022-11-18 19:52:59,135 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, -2 predicate places. [2022-11-18 19:52:59,135 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 533 flow [2022-11-18 19:52:59,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:59,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:52:59,136 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] [2022-11-18 19:52:59,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:52:59,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:52:59,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash 121712268, now seen corresponding path program 1 times [2022-11-18 19:52:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:59,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601271188] [2022-11-18 19:52:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:59,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:00,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:00,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601271188] [2022-11-18 19:53:00,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601271188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:00,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:00,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-18 19:53:00,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759800247] [2022-11-18 19:53:00,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:00,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:53:00,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:00,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:53:00,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:53:00,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 272 [2022-11-18 19:53:00,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 533 flow. Second operand has 17 states, 17 states have (on average 185.41176470588235) internal successors, (3152), 17 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:00,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:00,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 272 [2022-11-18 19:53:00,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:03,416 INFO L130 PetriNetUnfolder]: 1599/6667 cut-off events. [2022-11-18 19:53:03,417 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-18 19:53:03,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9621 conditions, 6667 events. 1599/6667 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 58194 event pairs, 1290 based on Foata normal form. 0/6316 useless extension candidates. Maximal degree in co-relation 9614. Up to 2556 conditions per place. [2022-11-18 19:53:03,469 INFO L137 encePairwiseOnDemand]: 256/272 looper letters, 79 selfloop transitions, 20 changer transitions 0/269 dead transitions. [2022-11-18 19:53:03,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 269 transitions, 777 flow [2022-11-18 19:53:03,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:53:03,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 19:53:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2846 transitions. [2022-11-18 19:53:03,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6975490196078431 [2022-11-18 19:53:03,477 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2846 transitions. [2022-11-18 19:53:03,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2846 transitions. [2022-11-18 19:53:03,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:03,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2846 transitions. [2022-11-18 19:53:03,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 189.73333333333332) internal successors, (2846), 15 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:03,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 272.0) internal successors, (4352), 16 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:03,494 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 272.0) internal successors, (4352), 16 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:03,494 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 533 flow. Second operand 15 states and 2846 transitions. [2022-11-18 19:53:03,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 269 transitions, 777 flow [2022-11-18 19:53:03,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 269 transitions, 777 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:53:03,503 INFO L231 Difference]: Finished difference. Result has 270 places, 260 transitions, 640 flow [2022-11-18 19:53:03,504 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=640, PETRI_PLACES=270, PETRI_TRANSITIONS=260} [2022-11-18 19:53:03,507 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 18 predicate places. [2022-11-18 19:53:03,507 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 260 transitions, 640 flow [2022-11-18 19:53:03,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 185.41176470588235) internal successors, (3152), 17 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:03,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:03,510 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] [2022-11-18 19:53:03,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:53:03,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:53:03,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:03,512 INFO L85 PathProgramCache]: Analyzing trace with hash -350737337, now seen corresponding path program 1 times [2022-11-18 19:53:03,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:03,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344251921] [2022-11-18 19:53:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:03,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:07,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:07,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344251921] [2022-11-18 19:53:07,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344251921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:07,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:07,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-18 19:53:07,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861267353] [2022-11-18 19:53:07,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:07,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:53:07,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:53:07,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:53:07,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 272 [2022-11-18 19:53:07,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 260 transitions, 640 flow. Second operand has 27 states, 27 states have (on average 171.92592592592592) internal successors, (4642), 27 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:07,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:07,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 272 [2022-11-18 19:53:07,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:12,288 INFO L130 PetriNetUnfolder]: 1457/6027 cut-off events. [2022-11-18 19:53:12,288 INFO L131 PetriNetUnfolder]: For 116/119 co-relation queries the response was YES. [2022-11-18 19:53:12,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8864 conditions, 6027 events. 1457/6027 cut-off events. For 116/119 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 51343 event pairs, 1160 based on Foata normal form. 2/5752 useless extension candidates. Maximal degree in co-relation 8850. Up to 2313 conditions per place. [2022-11-18 19:53:12,351 INFO L137 encePairwiseOnDemand]: 240/272 looper letters, 87 selfloop transitions, 46 changer transitions 0/295 dead transitions. [2022-11-18 19:53:12,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 295 transitions, 1000 flow [2022-11-18 19:53:12,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 19:53:12,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-18 19:53:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5064 transitions. [2022-11-18 19:53:12,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6419878296146044 [2022-11-18 19:53:12,364 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 5064 transitions. [2022-11-18 19:53:12,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 5064 transitions. [2022-11-18 19:53:12,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:12,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 5064 transitions. [2022-11-18 19:53:12,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 174.6206896551724) internal successors, (5064), 29 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:12,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 272.0) internal successors, (8160), 30 states have internal predecessors, (8160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:12,411 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 272.0) internal successors, (8160), 30 states have internal predecessors, (8160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:12,411 INFO L175 Difference]: Start difference. First operand has 270 places, 260 transitions, 640 flow. Second operand 29 states and 5064 transitions. [2022-11-18 19:53:12,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 295 transitions, 1000 flow [2022-11-18 19:53:12,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 295 transitions, 987 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 19:53:12,422 INFO L231 Difference]: Finished difference. Result has 303 places, 282 transitions, 870 flow [2022-11-18 19:53:12,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=870, PETRI_PLACES=303, PETRI_TRANSITIONS=282} [2022-11-18 19:53:12,423 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 51 predicate places. [2022-11-18 19:53:12,424 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 282 transitions, 870 flow [2022-11-18 19:53:12,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 171.92592592592592) internal successors, (4642), 27 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:12,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:12,426 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] [2022-11-18 19:53:12,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:53:12,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:53:12,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:12,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1825567545, now seen corresponding path program 1 times [2022-11-18 19:53:12,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:12,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347285033] [2022-11-18 19:53:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:12,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:14,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:14,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347285033] [2022-11-18 19:53:14,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347285033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:14,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:14,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 19:53:14,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061990491] [2022-11-18 19:53:14,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:14,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:53:14,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:14,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:53:14,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:53:14,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 272 [2022-11-18 19:53:14,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 282 transitions, 870 flow. Second operand has 18 states, 18 states have (on average 176.72222222222223) internal successors, (3181), 18 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:14,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:14,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 272 [2022-11-18 19:53:14,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:17,028 INFO L130 PetriNetUnfolder]: 1619/6775 cut-off events. [2022-11-18 19:53:17,028 INFO L131 PetriNetUnfolder]: For 451/455 co-relation queries the response was YES. [2022-11-18 19:53:17,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10292 conditions, 6775 events. 1619/6775 cut-off events. For 451/455 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 59201 event pairs, 734 based on Foata normal form. 3/6431 useless extension candidates. Maximal degree in co-relation 10266. Up to 2470 conditions per place. [2022-11-18 19:53:17,219 INFO L137 encePairwiseOnDemand]: 251/272 looper letters, 115 selfloop transitions, 34 changer transitions 0/318 dead transitions. [2022-11-18 19:53:17,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 318 transitions, 1280 flow [2022-11-18 19:53:17,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:53:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 19:53:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2911 transitions. [2022-11-18 19:53:17,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6688878676470589 [2022-11-18 19:53:17,232 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2911 transitions. [2022-11-18 19:53:17,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2911 transitions. [2022-11-18 19:53:17,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:17,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2911 transitions. [2022-11-18 19:53:17,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 181.9375) internal successors, (2911), 16 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:17,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 272.0) internal successors, (4624), 17 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:17,253 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 272.0) internal successors, (4624), 17 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:17,253 INFO L175 Difference]: Start difference. First operand has 303 places, 282 transitions, 870 flow. Second operand 16 states and 2911 transitions. [2022-11-18 19:53:17,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 318 transitions, 1280 flow [2022-11-18 19:53:17,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 318 transitions, 1232 flow, removed 8 selfloop flow, removed 15 redundant places. [2022-11-18 19:53:17,273 INFO L231 Difference]: Finished difference. Result has 308 places, 292 transitions, 989 flow [2022-11-18 19:53:17,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=989, PETRI_PLACES=308, PETRI_TRANSITIONS=292} [2022-11-18 19:53:17,278 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 56 predicate places. [2022-11-18 19:53:17,278 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 292 transitions, 989 flow [2022-11-18 19:53:17,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 176.72222222222223) internal successors, (3181), 18 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:17,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:17,280 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] [2022-11-18 19:53:17,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:53:17,280 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:53:17,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:17,281 INFO L85 PathProgramCache]: Analyzing trace with hash 699693349, now seen corresponding path program 2 times [2022-11-18 19:53:17,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:17,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898230951] [2022-11-18 19:53:17,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:17,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:19,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:19,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898230951] [2022-11-18 19:53:19,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898230951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:19,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:19,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 19:53:19,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072360139] [2022-11-18 19:53:19,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:19,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:53:19,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:19,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:53:19,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:53:19,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 272 [2022-11-18 19:53:19,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 292 transitions, 989 flow. Second operand has 18 states, 18 states have (on average 176.72222222222223) internal successors, (3181), 18 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:19,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:19,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 272 [2022-11-18 19:53:19,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:22,732 INFO L130 PetriNetUnfolder]: 1640/6853 cut-off events. [2022-11-18 19:53:22,732 INFO L131 PetriNetUnfolder]: For 709/713 co-relation queries the response was YES. [2022-11-18 19:53:22,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10629 conditions, 6853 events. 1640/6853 cut-off events. For 709/713 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 59791 event pairs, 735 based on Foata normal form. 3/6509 useless extension candidates. Maximal degree in co-relation 10598. Up to 2475 conditions per place. [2022-11-18 19:53:22,800 INFO L137 encePairwiseOnDemand]: 252/272 looper letters, 116 selfloop transitions, 38 changer transitions 0/323 dead transitions. [2022-11-18 19:53:22,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 323 transitions, 1418 flow [2022-11-18 19:53:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:53:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 19:53:22,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2735 transitions. [2022-11-18 19:53:22,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6703431372549019 [2022-11-18 19:53:22,810 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2735 transitions. [2022-11-18 19:53:22,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2735 transitions. [2022-11-18 19:53:22,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:22,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2735 transitions. [2022-11-18 19:53:22,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 182.33333333333334) internal successors, (2735), 15 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:22,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 272.0) internal successors, (4352), 16 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:22,965 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 272.0) internal successors, (4352), 16 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:22,966 INFO L175 Difference]: Start difference. First operand has 308 places, 292 transitions, 989 flow. Second operand 15 states and 2735 transitions. [2022-11-18 19:53:22,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 323 transitions, 1418 flow [2022-11-18 19:53:22,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 323 transitions, 1386 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-11-18 19:53:22,978 INFO L231 Difference]: Finished difference. Result has 316 places, 298 transitions, 1135 flow [2022-11-18 19:53:22,979 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1135, PETRI_PLACES=316, PETRI_TRANSITIONS=298} [2022-11-18 19:53:22,980 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 64 predicate places. [2022-11-18 19:53:22,981 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 298 transitions, 1135 flow [2022-11-18 19:53:22,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 176.72222222222223) internal successors, (3181), 18 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:22,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:22,982 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] [2022-11-18 19:53:22,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:53:22,983 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:53:22,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:22,985 INFO L85 PathProgramCache]: Analyzing trace with hash 883518765, now seen corresponding path program 3 times [2022-11-18 19:53:22,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:22,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342042473] [2022-11-18 19:53:22,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:22,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:24,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:24,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342042473] [2022-11-18 19:53:24,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342042473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:24,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:24,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 19:53:24,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900684143] [2022-11-18 19:53:24,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:24,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:53:24,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:24,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:53:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:53:24,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 272 [2022-11-18 19:53:24,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 298 transitions, 1135 flow. Second operand has 18 states, 18 states have (on average 182.38888888888889) internal successors, (3283), 18 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:24,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:24,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 272 [2022-11-18 19:53:24,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:26,881 INFO L130 PetriNetUnfolder]: 1625/6838 cut-off events. [2022-11-18 19:53:26,881 INFO L131 PetriNetUnfolder]: For 1153/1157 co-relation queries the response was YES. [2022-11-18 19:53:26,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10688 conditions, 6838 events. 1625/6838 cut-off events. For 1153/1157 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 59938 event pairs, 741 based on Foata normal form. 6/6495 useless extension candidates. Maximal degree in co-relation 10654. Up to 2414 conditions per place. [2022-11-18 19:53:26,943 INFO L137 encePairwiseOnDemand]: 255/272 looper letters, 93 selfloop transitions, 36 changer transitions 0/304 dead transitions. [2022-11-18 19:53:26,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 304 transitions, 1401 flow [2022-11-18 19:53:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:53:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 19:53:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2611 transitions. [2022-11-18 19:53:26,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6856617647058824 [2022-11-18 19:53:26,952 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2611 transitions. [2022-11-18 19:53:26,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2611 transitions. [2022-11-18 19:53:26,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:26,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2611 transitions. [2022-11-18 19:53:26,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 186.5) internal successors, (2611), 14 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:26,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:26,972 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:26,973 INFO L175 Difference]: Start difference. First operand has 316 places, 298 transitions, 1135 flow. Second operand 14 states and 2611 transitions. [2022-11-18 19:53:26,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 304 transitions, 1401 flow [2022-11-18 19:53:26,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 304 transitions, 1365 flow, removed 4 selfloop flow, removed 11 redundant places. [2022-11-18 19:53:26,988 INFO L231 Difference]: Finished difference. Result has 316 places, 294 transitions, 1149 flow [2022-11-18 19:53:26,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1149, PETRI_PLACES=316, PETRI_TRANSITIONS=294} [2022-11-18 19:53:26,990 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 64 predicate places. [2022-11-18 19:53:26,990 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 294 transitions, 1149 flow [2022-11-18 19:53:26,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 182.38888888888889) internal successors, (3283), 18 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:26,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:26,992 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] [2022-11-18 19:53:26,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:53:26,993 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:53:26,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:26,993 INFO L85 PathProgramCache]: Analyzing trace with hash 195523842, now seen corresponding path program 1 times [2022-11-18 19:53:26,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:26,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461018379] [2022-11-18 19:53:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:26,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:30,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:30,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461018379] [2022-11-18 19:53:30,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461018379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:30,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:30,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-18 19:53:30,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788913012] [2022-11-18 19:53:30,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:30,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:53:30,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:30,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:53:30,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:53:30,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 272 [2022-11-18 19:53:30,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 294 transitions, 1149 flow. Second operand has 29 states, 29 states have (on average 163.06896551724137) internal successors, (4729), 29 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:30,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:30,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 272 [2022-11-18 19:53:30,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:35,440 INFO L130 PetriNetUnfolder]: 847/3522 cut-off events. [2022-11-18 19:53:35,440 INFO L131 PetriNetUnfolder]: For 1200/1203 co-relation queries the response was YES. [2022-11-18 19:53:35,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5958 conditions, 3522 events. 847/3522 cut-off events. For 1200/1203 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 24737 event pairs, 336 based on Foata normal form. 3/3353 useless extension candidates. Maximal degree in co-relation 5925. Up to 1083 conditions per place. [2022-11-18 19:53:35,461 INFO L137 encePairwiseOnDemand]: 242/272 looper letters, 118 selfloop transitions, 53 changer transitions 0/318 dead transitions. [2022-11-18 19:53:35,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 318 transitions, 1558 flow [2022-11-18 19:53:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:53:35,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 19:53:35,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4648 transitions. [2022-11-18 19:53:35,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6102941176470589 [2022-11-18 19:53:35,470 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4648 transitions. [2022-11-18 19:53:35,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4648 transitions. [2022-11-18 19:53:35,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:35,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4648 transitions. [2022-11-18 19:53:35,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 166.0) internal successors, (4648), 28 states have internal predecessors, (4648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 272.0) internal successors, (7888), 29 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,494 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 272.0) internal successors, (7888), 29 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,495 INFO L175 Difference]: Start difference. First operand has 316 places, 294 transitions, 1149 flow. Second operand 28 states and 4648 transitions. [2022-11-18 19:53:35,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 318 transitions, 1558 flow [2022-11-18 19:53:35,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 318 transitions, 1466 flow, removed 1 selfloop flow, removed 21 redundant places. [2022-11-18 19:53:35,506 INFO L231 Difference]: Finished difference. Result has 316 places, 285 transitions, 1151 flow [2022-11-18 19:53:35,507 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1151, PETRI_PLACES=316, PETRI_TRANSITIONS=285} [2022-11-18 19:53:35,507 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 64 predicate places. [2022-11-18 19:53:35,508 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 285 transitions, 1151 flow [2022-11-18 19:53:35,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 163.06896551724137) internal successors, (4729), 29 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:35,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:35,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:53:35,510 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:53:35,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:35,511 INFO L85 PathProgramCache]: Analyzing trace with hash 939438851, now seen corresponding path program 1 times [2022-11-18 19:53:35,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:35,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167828877] [2022-11-18 19:53:35,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:35,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:35,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:35,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167828877] [2022-11-18 19:53:35,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167828877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:35,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:35,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:35,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002675409] [2022-11-18 19:53:35,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:35,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:53:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:35,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:53:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:53:35,661 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 272 [2022-11-18 19:53:35,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 285 transitions, 1151 flow. Second operand has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:35,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 272 [2022-11-18 19:53:35,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:35,835 INFO L130 PetriNetUnfolder]: 62/909 cut-off events. [2022-11-18 19:53:35,835 INFO L131 PetriNetUnfolder]: For 539/540 co-relation queries the response was YES. [2022-11-18 19:53:35,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 909 events. 62/909 cut-off events. For 539/540 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3745 event pairs, 7 based on Foata normal form. 18/882 useless extension candidates. Maximal degree in co-relation 1454. Up to 39 conditions per place. [2022-11-18 19:53:35,843 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 12 selfloop transitions, 6 changer transitions 0/287 dead transitions. [2022-11-18 19:53:35,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 287 transitions, 1194 flow [2022-11-18 19:53:35,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:53:35,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:53:35,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2022-11-18 19:53:35,845 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9301470588235294 [2022-11-18 19:53:35,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2022-11-18 19:53:35,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2022-11-18 19:53:35,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:35,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2022-11-18 19:53:35,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,850 INFO L175 Difference]: Start difference. First operand has 316 places, 285 transitions, 1151 flow. Second operand 3 states and 759 transitions. [2022-11-18 19:53:35,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 287 transitions, 1194 flow [2022-11-18 19:53:35,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 287 transitions, 1096 flow, removed 2 selfloop flow, removed 25 redundant places. [2022-11-18 19:53:35,864 INFO L231 Difference]: Finished difference. Result has 293 places, 285 transitions, 1065 flow [2022-11-18 19:53:35,865 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1065, PETRI_PLACES=293, PETRI_TRANSITIONS=285} [2022-11-18 19:53:35,866 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 41 predicate places. [2022-11-18 19:53:35,866 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 285 transitions, 1065 flow [2022-11-18 19:53:35,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:35,867 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:35,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:35,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:53:35,868 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:53:35,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:35,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1895773211, now seen corresponding path program 1 times [2022-11-18 19:53:35,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:35,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111348647] [2022-11-18 19:53:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:35,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:42,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:42,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111348647] [2022-11-18 19:53:42,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111348647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:42,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:42,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-11-18 19:53:42,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503492594] [2022-11-18 19:53:42,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:42,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:53:42,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:42,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:53:42,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:53:42,301 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 272 [2022-11-18 19:53:42,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 285 transitions, 1065 flow. Second operand has 35 states, 35 states have (on average 155.42857142857142) internal successors, (5440), 35 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:42,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:42,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 272 [2022-11-18 19:53:42,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:49,362 INFO L130 PetriNetUnfolder]: 566/2568 cut-off events. [2022-11-18 19:53:49,362 INFO L131 PetriNetUnfolder]: For 1180/1184 co-relation queries the response was YES. [2022-11-18 19:53:49,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5040 conditions, 2568 events. 566/2568 cut-off events. For 1180/1184 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16589 event pairs, 65 based on Foata normal form. 0/2465 useless extension candidates. Maximal degree in co-relation 5010. Up to 408 conditions per place. [2022-11-18 19:53:49,378 INFO L137 encePairwiseOnDemand]: 229/272 looper letters, 193 selfloop transitions, 73 changer transitions 0/402 dead transitions. [2022-11-18 19:53:49,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 402 transitions, 1943 flow [2022-11-18 19:53:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 19:53:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 19:53:49,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7114 transitions. [2022-11-18 19:53:49,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5812091503267974 [2022-11-18 19:53:49,389 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7114 transitions. [2022-11-18 19:53:49,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7114 transitions. [2022-11-18 19:53:49,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:49,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7114 transitions. [2022-11-18 19:53:49,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 158.0888888888889) internal successors, (7114), 45 states have internal predecessors, (7114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:49,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 272.0) internal successors, (12512), 46 states have internal predecessors, (12512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:49,426 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 272.0) internal successors, (12512), 46 states have internal predecessors, (12512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:49,427 INFO L175 Difference]: Start difference. First operand has 293 places, 285 transitions, 1065 flow. Second operand 45 states and 7114 transitions. [2022-11-18 19:53:49,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 402 transitions, 1943 flow [2022-11-18 19:53:49,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 402 transitions, 1937 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:49,440 INFO L231 Difference]: Finished difference. Result has 344 places, 309 transitions, 1323 flow [2022-11-18 19:53:49,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1323, PETRI_PLACES=344, PETRI_TRANSITIONS=309} [2022-11-18 19:53:49,441 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 92 predicate places. [2022-11-18 19:53:49,442 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 309 transitions, 1323 flow [2022-11-18 19:53:49,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 155.42857142857142) internal successors, (5440), 35 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:49,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:49,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:49,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:53:49,444 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:53:49,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:49,445 INFO L85 PathProgramCache]: Analyzing trace with hash 104483326, now seen corresponding path program 1 times [2022-11-18 19:53:49,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:49,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080367469] [2022-11-18 19:53:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:49,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:52,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:52,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080367469] [2022-11-18 19:53:52,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080367469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:52,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:52,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-18 19:53:52,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411538534] [2022-11-18 19:53:52,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:52,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:53:52,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:52,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:53:52,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:53:52,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 272 [2022-11-18 19:53:52,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 309 transitions, 1323 flow. Second operand has 29 states, 29 states have (on average 167.72413793103448) internal successors, (4864), 29 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:52,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:52,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 272 [2022-11-18 19:53:52,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:55,989 INFO L130 PetriNetUnfolder]: 393/1830 cut-off events. [2022-11-18 19:53:55,989 INFO L131 PetriNetUnfolder]: For 1480/1484 co-relation queries the response was YES. [2022-11-18 19:53:55,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4095 conditions, 1830 events. 393/1830 cut-off events. For 1480/1484 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 10087 event pairs, 43 based on Foata normal form. 6/1783 useless extension candidates. Maximal degree in co-relation 4056. Up to 359 conditions per place. [2022-11-18 19:53:56,005 INFO L137 encePairwiseOnDemand]: 239/272 looper letters, 137 selfloop transitions, 58 changer transitions 0/340 dead transitions. [2022-11-18 19:53:56,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 340 transitions, 1780 flow [2022-11-18 19:53:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:53:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 19:53:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4778 transitions. [2022-11-18 19:53:56,015 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6273634453781513 [2022-11-18 19:53:56,016 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4778 transitions. [2022-11-18 19:53:56,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4778 transitions. [2022-11-18 19:53:56,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:56,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4778 transitions. [2022-11-18 19:53:56,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 170.64285714285714) internal successors, (4778), 28 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:56,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 272.0) internal successors, (7888), 29 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:56,045 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 272.0) internal successors, (7888), 29 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:56,046 INFO L175 Difference]: Start difference. First operand has 344 places, 309 transitions, 1323 flow. Second operand 28 states and 4778 transitions. [2022-11-18 19:53:56,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 340 transitions, 1780 flow [2022-11-18 19:53:56,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 340 transitions, 1649 flow, removed 9 selfloop flow, removed 33 redundant places. [2022-11-18 19:53:56,067 INFO L231 Difference]: Finished difference. Result has 327 places, 292 transitions, 1216 flow [2022-11-18 19:53:56,068 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1216, PETRI_PLACES=327, PETRI_TRANSITIONS=292} [2022-11-18 19:53:56,068 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 75 predicate places. [2022-11-18 19:53:56,069 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 292 transitions, 1216 flow [2022-11-18 19:53:56,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 167.72413793103448) internal successors, (4864), 29 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:56,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:56,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:56,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:53:56,072 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:53:56,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:56,073 INFO L85 PathProgramCache]: Analyzing trace with hash 477528856, now seen corresponding path program 1 times [2022-11-18 19:53:56,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:56,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224482151] [2022-11-18 19:53:56,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:56,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:03,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:03,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224482151] [2022-11-18 19:54:03,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224482151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:03,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:03,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-11-18 19:54:03,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701316778] [2022-11-18 19:54:03,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:03,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:54:03,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:03,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:54:03,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:54:03,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 272 [2022-11-18 19:54:03,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 292 transitions, 1216 flow. Second operand has 35 states, 35 states have (on average 155.54285714285714) internal successors, (5444), 35 states have internal predecessors, (5444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:03,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:03,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 272 [2022-11-18 19:54:03,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:09,514 INFO L130 PetriNetUnfolder]: 473/2158 cut-off events. [2022-11-18 19:54:09,514 INFO L131 PetriNetUnfolder]: For 1602/1606 co-relation queries the response was YES. [2022-11-18 19:54:09,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4645 conditions, 2158 events. 473/2158 cut-off events. For 1602/1606 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 12450 event pairs, 51 based on Foata normal form. 0/2088 useless extension candidates. Maximal degree in co-relation 4613. Up to 379 conditions per place. [2022-11-18 19:54:09,535 INFO L137 encePairwiseOnDemand]: 233/272 looper letters, 165 selfloop transitions, 68 changer transitions 0/369 dead transitions. [2022-11-18 19:54:09,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 369 transitions, 1905 flow [2022-11-18 19:54:09,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 19:54:09,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 19:54:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5553 transitions. [2022-11-18 19:54:09,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5832983193277311 [2022-11-18 19:54:09,545 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5553 transitions. [2022-11-18 19:54:09,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5553 transitions. [2022-11-18 19:54:09,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:09,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5553 transitions. [2022-11-18 19:54:09,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 158.65714285714284) internal successors, (5553), 35 states have internal predecessors, (5553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:09,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 272.0) internal successors, (9792), 36 states have internal predecessors, (9792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:09,567 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 272.0) internal successors, (9792), 36 states have internal predecessors, (9792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:09,568 INFO L175 Difference]: Start difference. First operand has 327 places, 292 transitions, 1216 flow. Second operand 35 states and 5553 transitions. [2022-11-18 19:54:09,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 369 transitions, 1905 flow [2022-11-18 19:54:09,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 369 transitions, 1790 flow, removed 0 selfloop flow, removed 26 redundant places. [2022-11-18 19:54:09,583 INFO L231 Difference]: Finished difference. Result has 340 places, 299 transitions, 1286 flow [2022-11-18 19:54:09,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1286, PETRI_PLACES=340, PETRI_TRANSITIONS=299} [2022-11-18 19:54:09,584 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 88 predicate places. [2022-11-18 19:54:09,585 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 299 transitions, 1286 flow [2022-11-18 19:54:09,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 155.54285714285714) internal successors, (5444), 35 states have internal predecessors, (5444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:09,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:09,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:09,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:54:09,587 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:54:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:09,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1720061559, now seen corresponding path program 1 times [2022-11-18 19:54:09,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:09,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264179364] [2022-11-18 19:54:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:09,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:17,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:17,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264179364] [2022-11-18 19:54:17,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264179364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:17,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:17,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-11-18 19:54:17,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578162472] [2022-11-18 19:54:17,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:17,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 19:54:17,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 19:54:17,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1818, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 19:54:17,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 272 [2022-11-18 19:54:17,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 299 transitions, 1286 flow. Second operand has 45 states, 45 states have (on average 136.35555555555555) internal successors, (6136), 45 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:17,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:17,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 272 [2022-11-18 19:54:17,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:36,650 INFO L130 PetriNetUnfolder]: 5601/13839 cut-off events. [2022-11-18 19:54:36,650 INFO L131 PetriNetUnfolder]: For 5458/5459 co-relation queries the response was YES. [2022-11-18 19:54:36,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29218 conditions, 13839 events. 5601/13839 cut-off events. For 5458/5459 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 108237 event pairs, 1025 based on Foata normal form. 0/12922 useless extension candidates. Maximal degree in co-relation 29181. Up to 4164 conditions per place. [2022-11-18 19:54:36,786 INFO L137 encePairwiseOnDemand]: 217/272 looper letters, 536 selfloop transitions, 180 changer transitions 55/892 dead transitions. [2022-11-18 19:54:36,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 892 transitions, 4487 flow [2022-11-18 19:54:36,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-18 19:54:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-11-18 19:54:36,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 11188 transitions. [2022-11-18 19:54:36,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5273378582202112 [2022-11-18 19:54:36,802 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 11188 transitions. [2022-11-18 19:54:36,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 11188 transitions. [2022-11-18 19:54:36,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:36,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 11188 transitions. [2022-11-18 19:54:36,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 143.43589743589743) internal successors, (11188), 78 states have internal predecessors, (11188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:36,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 272.0) internal successors, (21488), 79 states have internal predecessors, (21488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:36,844 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 272.0) internal successors, (21488), 79 states have internal predecessors, (21488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:36,845 INFO L175 Difference]: Start difference. First operand has 340 places, 299 transitions, 1286 flow. Second operand 78 states and 11188 transitions. [2022-11-18 19:54:36,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 892 transitions, 4487 flow [2022-11-18 19:54:36,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 892 transitions, 4301 flow, removed 0 selfloop flow, removed 29 redundant places. [2022-11-18 19:54:36,900 INFO L231 Difference]: Finished difference. Result has 444 places, 432 transitions, 2498 flow [2022-11-18 19:54:36,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=2498, PETRI_PLACES=444, PETRI_TRANSITIONS=432} [2022-11-18 19:54:36,902 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 192 predicate places. [2022-11-18 19:54:36,902 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 432 transitions, 2498 flow [2022-11-18 19:54:36,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 136.35555555555555) internal successors, (6136), 45 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:36,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:36,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:36,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:54:36,904 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:54:36,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash -38573045, now seen corresponding path program 2 times [2022-11-18 19:54:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:36,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796518749] [2022-11-18 19:54:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:36,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:32,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:32,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796518749] [2022-11-18 19:56:32,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796518749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:32,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:32,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-11-18 19:56:32,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823574120] [2022-11-18 19:56:32,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:32,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 19:56:32,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 19:56:32,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2285, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 19:56:32,900 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 272 [2022-11-18 19:56:32,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 432 transitions, 2498 flow. Second operand has 50 states, 50 states have (on average 133.18) internal successors, (6659), 50 states have internal predecessors, (6659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:32,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:32,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 272 [2022-11-18 19:56:32,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:58,127 INFO L130 PetriNetUnfolder]: 6979/16901 cut-off events. [2022-11-18 19:58:58,127 INFO L131 PetriNetUnfolder]: For 138914/138995 co-relation queries the response was YES. [2022-11-18 19:58:58,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57720 conditions, 16901 events. 6979/16901 cut-off events. For 138914/138995 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 137536 event pairs, 2779 based on Foata normal form. 178/16741 useless extension candidates. Maximal degree in co-relation 57627. Up to 9526 conditions per place. [2022-11-18 19:58:58,430 INFO L137 encePairwiseOnDemand]: 215/272 looper letters, 542 selfloop transitions, 137 changer transitions 42/839 dead transitions. [2022-11-18 19:58:58,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 839 transitions, 6525 flow [2022-11-18 19:58:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-18 19:58:58,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2022-11-18 19:58:58,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 10113 transitions. [2022-11-18 19:58:58,443 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5093170829975826 [2022-11-18 19:58:58,444 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 10113 transitions. [2022-11-18 19:58:58,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 10113 transitions. [2022-11-18 19:58:58,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:58,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 10113 transitions. [2022-11-18 19:58:58,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 138.53424657534248) internal successors, (10113), 73 states have internal predecessors, (10113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:58,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 272.0) internal successors, (20128), 74 states have internal predecessors, (20128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:58,482 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 272.0) internal successors, (20128), 74 states have internal predecessors, (20128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:58,483 INFO L175 Difference]: Start difference. First operand has 444 places, 432 transitions, 2498 flow. Second operand 73 states and 10113 transitions. [2022-11-18 19:58:58,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 839 transitions, 6525 flow [2022-11-18 19:58:59,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 839 transitions, 6441 flow, removed 19 selfloop flow, removed 15 redundant places. [2022-11-18 19:58:59,060 INFO L231 Difference]: Finished difference. Result has 538 places, 546 transitions, 4364 flow [2022-11-18 19:58:59,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=4364, PETRI_PLACES=538, PETRI_TRANSITIONS=546} [2022-11-18 19:58:59,061 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 286 predicate places. [2022-11-18 19:58:59,061 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 546 transitions, 4364 flow [2022-11-18 19:58:59,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 133.18) internal successors, (6659), 50 states have internal predecessors, (6659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:59,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:59,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:59,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:58:59,062 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:58:59,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:59,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1407543281, now seen corresponding path program 3 times [2022-11-18 19:58:59,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:59,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463723202] [2022-11-18 19:58:59,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:59,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:07,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:07,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463723202] [2022-11-18 19:59:07,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463723202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:07,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:07,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-11-18 19:59:07,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121282033] [2022-11-18 19:59:07,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:07,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 19:59:07,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 19:59:07,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1926, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 19:59:07,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 272 [2022-11-18 19:59:07,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 546 transitions, 4364 flow. Second operand has 46 states, 46 states have (on average 136.30434782608697) internal successors, (6270), 46 states have internal predecessors, (6270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:07,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:07,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 272 [2022-11-18 19:59:07,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:29,379 INFO L130 PetriNetUnfolder]: 8174/19619 cut-off events. [2022-11-18 19:59:29,379 INFO L131 PetriNetUnfolder]: For 580626/580737 co-relation queries the response was YES. [2022-11-18 19:59:29,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84745 conditions, 19619 events. 8174/19619 cut-off events. For 580626/580737 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 163555 event pairs, 1784 based on Foata normal form. 176/19408 useless extension candidates. Maximal degree in co-relation 84615. Up to 10385 conditions per place. [2022-11-18 19:59:29,868 INFO L137 encePairwiseOnDemand]: 218/272 looper letters, 609 selfloop transitions, 141 changer transitions 43/919 dead transitions. [2022-11-18 19:59:29,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 919 transitions, 9129 flow [2022-11-18 19:59:29,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-18 19:59:29,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-11-18 19:59:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 9481 transitions. [2022-11-18 19:59:29,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5202480245829675 [2022-11-18 19:59:29,879 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 9481 transitions. [2022-11-18 19:59:29,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 9481 transitions. [2022-11-18 19:59:29,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:29,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 9481 transitions. [2022-11-18 19:59:29,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 141.50746268656715) internal successors, (9481), 67 states have internal predecessors, (9481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:29,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 272.0) internal successors, (18496), 68 states have internal predecessors, (18496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:29,915 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 272.0) internal successors, (18496), 68 states have internal predecessors, (18496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:29,915 INFO L175 Difference]: Start difference. First operand has 538 places, 546 transitions, 4364 flow. Second operand 67 states and 9481 transitions. [2022-11-18 19:59:29,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 919 transitions, 9129 flow [2022-11-18 19:59:31,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 919 transitions, 8130 flow, removed 472 selfloop flow, removed 14 redundant places. [2022-11-18 19:59:31,302 INFO L231 Difference]: Finished difference. Result has 620 places, 640 transitions, 5307 flow [2022-11-18 19:59:31,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=3514, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=5307, PETRI_PLACES=620, PETRI_TRANSITIONS=640} [2022-11-18 19:59:31,303 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 368 predicate places. [2022-11-18 19:59:31,303 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 640 transitions, 5307 flow [2022-11-18 19:59:31,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 136.30434782608697) internal successors, (6270), 46 states have internal predecessors, (6270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:31,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:31,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:31,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:59:31,305 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:59:31,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:31,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1340605147, now seen corresponding path program 4 times [2022-11-18 19:59:31,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:31,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647605361] [2022-11-18 19:59:31,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:31,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:39,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:39,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647605361] [2022-11-18 19:59:39,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647605361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:39,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:39,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-11-18 19:59:39,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622395071] [2022-11-18 19:59:39,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:39,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 19:59:39,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:39,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 19:59:39,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1821, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 19:59:39,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 272 [2022-11-18 19:59:39,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 640 transitions, 5307 flow. Second operand has 45 states, 45 states have (on average 136.35555555555555) internal successors, (6136), 45 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:39,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:39,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 272 [2022-11-18 19:59:39,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:00:06,533 INFO L130 PetriNetUnfolder]: 9212/22162 cut-off events. [2022-11-18 20:00:06,533 INFO L131 PetriNetUnfolder]: For 1269072/1269235 co-relation queries the response was YES. [2022-11-18 20:00:07,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106443 conditions, 22162 events. 9212/22162 cut-off events. For 1269072/1269235 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 190234 event pairs, 3025 based on Foata normal form. 154/21849 useless extension candidates. Maximal degree in co-relation 106284. Up to 13279 conditions per place. [2022-11-18 20:00:07,356 INFO L137 encePairwiseOnDemand]: 218/272 looper letters, 691 selfloop transitions, 126 changer transitions 37/980 dead transitions. [2022-11-18 20:00:07,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 980 transitions, 9742 flow [2022-11-18 20:00:07,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-18 20:00:07,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-11-18 20:00:07,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 9453 transitions. [2022-11-18 20:00:07,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5187115891132572 [2022-11-18 20:00:07,367 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 9453 transitions. [2022-11-18 20:00:07,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 9453 transitions. [2022-11-18 20:00:07,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:00:07,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 9453 transitions. [2022-11-18 20:00:07,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 141.08955223880596) internal successors, (9453), 67 states have internal predecessors, (9453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:07,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 272.0) internal successors, (18496), 68 states have internal predecessors, (18496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:07,403 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 272.0) internal successors, (18496), 68 states have internal predecessors, (18496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:07,403 INFO L175 Difference]: Start difference. First operand has 620 places, 640 transitions, 5307 flow. Second operand 67 states and 9453 transitions. [2022-11-18 20:00:07,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 686 places, 980 transitions, 9742 flow [2022-11-18 20:00:09,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 980 transitions, 9078 flow, removed 309 selfloop flow, removed 14 redundant places. [2022-11-18 20:00:09,475 INFO L231 Difference]: Finished difference. Result has 703 places, 730 transitions, 6484 flow [2022-11-18 20:00:09,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=4649, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=6484, PETRI_PLACES=703, PETRI_TRANSITIONS=730} [2022-11-18 20:00:09,476 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 451 predicate places. [2022-11-18 20:00:09,477 INFO L495 AbstractCegarLoop]: Abstraction has has 703 places, 730 transitions, 6484 flow [2022-11-18 20:00:09,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 136.35555555555555) internal successors, (6136), 45 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:09,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:00:09,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:09,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:00:09,478 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 20:00:09,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:09,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1860546981, now seen corresponding path program 5 times [2022-11-18 20:00:09,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:09,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53529706] [2022-11-18 20:00:09,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:09,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:17,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:17,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53529706] [2022-11-18 20:00:17,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53529706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:17,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:17,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-11-18 20:00:17,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997759076] [2022-11-18 20:00:17,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:17,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 20:00:17,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 20:00:17,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1820, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 20:00:17,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 272 [2022-11-18 20:00:17,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 730 transitions, 6484 flow. Second operand has 45 states, 45 states have (on average 136.35555555555555) internal successors, (6136), 45 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:17,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:00:17,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 272 [2022-11-18 20:00:17,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:00:47,043 INFO L130 PetriNetUnfolder]: 10296/24717 cut-off events. [2022-11-18 20:00:47,043 INFO L131 PetriNetUnfolder]: For 2231557/2231726 co-relation queries the response was YES. [2022-11-18 20:00:47,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128237 conditions, 24717 events. 10296/24717 cut-off events. For 2231557/2231726 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 217226 event pairs, 3469 based on Foata normal form. 168/24359 useless extension candidates. Maximal degree in co-relation 128047. Up to 15048 conditions per place. [2022-11-18 20:00:47,976 INFO L137 encePairwiseOnDemand]: 218/272 looper letters, 774 selfloop transitions, 140 changer transitions 39/1079 dead transitions. [2022-11-18 20:00:47,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 769 places, 1079 transitions, 11806 flow [2022-11-18 20:00:47,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-18 20:00:47,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-11-18 20:00:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 9462 transitions. [2022-11-18 20:00:47,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5192054433713784 [2022-11-18 20:00:47,983 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 9462 transitions. [2022-11-18 20:00:47,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 9462 transitions. [2022-11-18 20:00:47,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:00:47,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 9462 transitions. [2022-11-18 20:00:47,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 141.22388059701493) internal successors, (9462), 67 states have internal predecessors, (9462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:48,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 272.0) internal successors, (18496), 68 states have internal predecessors, (18496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:48,016 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 272.0) internal successors, (18496), 68 states have internal predecessors, (18496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:48,016 INFO L175 Difference]: Start difference. First operand has 703 places, 730 transitions, 6484 flow. Second operand 67 states and 9462 transitions. [2022-11-18 20:00:48,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 769 places, 1079 transitions, 11806 flow [2022-11-18 20:00:52,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 755 places, 1079 transitions, 11029 flow, removed 374 selfloop flow, removed 14 redundant places. [2022-11-18 20:00:52,139 INFO L231 Difference]: Finished difference. Result has 784 places, 821 transitions, 7784 flow [2022-11-18 20:00:52,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=5707, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=7784, PETRI_PLACES=784, PETRI_TRANSITIONS=821} [2022-11-18 20:00:52,140 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 532 predicate places. [2022-11-18 20:00:52,140 INFO L495 AbstractCegarLoop]: Abstraction has has 784 places, 821 transitions, 7784 flow [2022-11-18 20:00:52,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 136.35555555555555) internal successors, (6136), 45 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:52,141 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:00:52,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:52,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:00:52,142 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 20:00:52,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:52,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1731027931, now seen corresponding path program 6 times [2022-11-18 20:00:52,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:52,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845580047] [2022-11-18 20:00:52,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:52,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:16,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:16,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845580047] [2022-11-18 20:01:16,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845580047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:16,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:16,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-11-18 20:01:16,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71094785] [2022-11-18 20:01:16,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:16,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 20:01:16,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 20:01:16,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2192, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:01:16,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 272 [2022-11-18 20:01:16,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 784 places, 821 transitions, 7784 flow. Second operand has 49 states, 49 states have (on average 130.22448979591837) internal successors, (6381), 49 states have internal predecessors, (6381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:16,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:16,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 272 [2022-11-18 20:01:16,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand