./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue.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_0fd93775-1436-4ac3-a820-5644b958140d/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd93775-1436-4ac3-a820-5644b958140d/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_0fd93775-1436-4ac3-a820-5644b958140d/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd93775-1436-4ac3-a820-5644b958140d/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd93775-1436-4ac3-a820-5644b958140d/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_0fd93775-1436-4ac3-a820-5644b958140d/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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- 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 19:31:58,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:31:58,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:31:58,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:31:58,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:31:58,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:31:58,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:31:58,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:31:58,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:31:58,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:31:58,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:31:58,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:31:58,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:31:58,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:31:58,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:31:58,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:31:58,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:31:58,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:31:58,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:31:58,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:31:58,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:31:58,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:31:58,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:31:58,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:31:58,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:31:58,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:31:58,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:31:58,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:31:58,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:31:58,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:31:58,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:31:58,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:31:58,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:31:58,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:31:58,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:31:58,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:31:58,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:31:58,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:31:58,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:31:58,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:31:58,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:31:58,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd93775-1436-4ac3-a820-5644b958140d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:31:58,160 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:31:58,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:31:58,161 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:31:58,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:31:58,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:31:58,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:31:58,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:31:58,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:31:58,164 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:31:58,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:31:58,166 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:31:58,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:31:58,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:31:58,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:31:58,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:31:58,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:31:58,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:31:58,167 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:31:58,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:31:58,168 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:31:58,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:31:58,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:31:58,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:31:58,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:31:58,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:58,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:31:58,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:31:58,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:31:58,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:31:58,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:31:58,172 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:31:58,172 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:31:58,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:31:58,173 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_0fd93775-1436-4ac3-a820-5644b958140d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd93775-1436-4ac3-a820-5644b958140d/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2022-11-18 19:31:58,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:31:58,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:31:58,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:31:58,545 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:31:58,546 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:31:58,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd93775-1436-4ac3-a820-5644b958140d/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/queue.i [2022-11-18 19:31:58,618 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd93775-1436-4ac3-a820-5644b958140d/bin/uautomizer-TMbwUNV5ro/data/30bb43a1a/b206660060924bfe9e44656b67c1d29d/FLAG8b36d2ca4 [2022-11-18 19:31:59,239 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:31:59,240 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd93775-1436-4ac3-a820-5644b958140d/sv-benchmarks/c/pthread/queue.i [2022-11-18 19:31:59,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd93775-1436-4ac3-a820-5644b958140d/bin/uautomizer-TMbwUNV5ro/data/30bb43a1a/b206660060924bfe9e44656b67c1d29d/FLAG8b36d2ca4 [2022-11-18 19:31:59,484 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd93775-1436-4ac3-a820-5644b958140d/bin/uautomizer-TMbwUNV5ro/data/30bb43a1a/b206660060924bfe9e44656b67c1d29d [2022-11-18 19:31:59,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:31:59,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:31:59,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:59,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:31:59,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:31:59,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:59" (1/1) ... [2022-11-18 19:31:59,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eaac14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:59, skipping insertion in model container [2022-11-18 19:31:59,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:59" (1/1) ... [2022-11-18 19:31:59,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:31:59,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:32:00,086 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_0fd93775-1436-4ac3-a820-5644b958140d/sv-benchmarks/c/pthread/queue.i[43284,43297] [2022-11-18 19:32:00,099 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_0fd93775-1436-4ac3-a820-5644b958140d/sv-benchmarks/c/pthread/queue.i[43491,43504] [2022-11-18 19:32:00,103 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_0fd93775-1436-4ac3-a820-5644b958140d/sv-benchmarks/c/pthread/queue.i[43772,43785] [2022-11-18 19:32:00,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:00,119 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:32:00,167 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_0fd93775-1436-4ac3-a820-5644b958140d/sv-benchmarks/c/pthread/queue.i[43284,43297] [2022-11-18 19:32:00,169 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_0fd93775-1436-4ac3-a820-5644b958140d/sv-benchmarks/c/pthread/queue.i[43491,43504] [2022-11-18 19:32:00,172 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_0fd93775-1436-4ac3-a820-5644b958140d/sv-benchmarks/c/pthread/queue.i[43772,43785] [2022-11-18 19:32:00,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:00,235 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:32:00,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:00 WrapperNode [2022-11-18 19:32:00,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:32:00,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:00,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:32:00,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:32:00,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:00" (1/1) ... [2022-11-18 19:32:00,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:00" (1/1) ... [2022-11-18 19:32:00,296 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 250 [2022-11-18 19:32:00,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:00,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:32:00,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:32:00,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:32:00,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:00" (1/1) ... [2022-11-18 19:32:00,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:00" (1/1) ... [2022-11-18 19:32:00,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:00" (1/1) ... [2022-11-18 19:32:00,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:00" (1/1) ... [2022-11-18 19:32:00,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:00" (1/1) ... [2022-11-18 19:32:00,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:00" (1/1) ... [2022-11-18 19:32:00,347 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:00" (1/1) ... [2022-11-18 19:32:00,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:00" (1/1) ... [2022-11-18 19:32:00,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:32:00,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:32:00,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:32:00,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:32:00,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:00" (1/1) ... [2022-11-18 19:32:00,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:32:00,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd93775-1436-4ac3-a820-5644b958140d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:00,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd93775-1436-4ac3-a820-5644b958140d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:00,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd93775-1436-4ac3-a820-5644b958140d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:32:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-18 19:32:00,468 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-18 19:32:00,468 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-18 19:32:00,469 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-18 19:32:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:32:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:32:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:32:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:32:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:32:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:32:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:32:00,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:32:00,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:32:00,473 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 19:32:00,747 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:32:00,765 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:32:01,279 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:32:01,289 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:32:01,289 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:32:01,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:01 BoogieIcfgContainer [2022-11-18 19:32:01,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:32:01,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:32:01,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:32:01,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:32:01,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:31:59" (1/3) ... [2022-11-18 19:32:01,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3a95d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:01, skipping insertion in model container [2022-11-18 19:32:01,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:00" (2/3) ... [2022-11-18 19:32:01,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3a95d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:01, skipping insertion in model container [2022-11-18 19:32:01,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:01" (3/3) ... [2022-11-18 19:32:01,302 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2022-11-18 19:32:01,311 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:32:01,323 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:32:01,323 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-18 19:32:01,323 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:32:01,471 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:32:01,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 280 transitions, 576 flow [2022-11-18 19:32:01,633 INFO L130 PetriNetUnfolder]: 15/278 cut-off events. [2022-11-18 19:32:01,634 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:32:01,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 278 events. 15/278 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. 0/260 useless extension candidates. Maximal degree in co-relation 204. Up to 2 conditions per place. [2022-11-18 19:32:01,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 280 transitions, 576 flow [2022-11-18 19:32:01,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 268 transitions, 545 flow [2022-11-18 19:32:01,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:32:01,668 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;@6bf87d87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:32:01,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 19:32:01,683 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2022-11-18 19:32:01,683 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:32:01,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:01,684 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:01,685 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 19:32:01,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1006888474, now seen corresponding path program 1 times [2022-11-18 19:32:01,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:01,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106729577] [2022-11-18 19:32:01,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:01,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:02,018 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 19:32:02,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:02,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106729577] [2022-11-18 19:32:02,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106729577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:02,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:02,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:32:02,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826717596] [2022-11-18 19:32:02,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:02,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:32:02,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:02,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:32:02,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:32:02,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 280 [2022-11-18 19:32:02,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 268 transitions, 545 flow. Second operand has 2 states, 2 states have (on average 267.5) internal successors, (535), 2 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 19:32:02,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:02,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 280 [2022-11-18 19:32:02,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:02,180 INFO L130 PetriNetUnfolder]: 10/257 cut-off events. [2022-11-18 19:32:02,181 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-18 19:32:02,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 257 events. 10/257 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 276 event pairs, 0 based on Foata normal form. 7/252 useless extension candidates. Maximal degree in co-relation 197. Up to 4 conditions per place. [2022-11-18 19:32:02,186 INFO L137 encePairwiseOnDemand]: 275/280 looper letters, 3 selfloop transitions, 0 changer transitions 0/257 dead transitions. [2022-11-18 19:32:02,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 257 transitions, 529 flow [2022-11-18 19:32:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:32:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 19:32:02,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 542 transitions. [2022-11-18 19:32:02,205 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9678571428571429 [2022-11-18 19:32:02,206 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 542 transitions. [2022-11-18 19:32:02,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 542 transitions. [2022-11-18 19:32:02,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:02,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 542 transitions. [2022-11-18 19:32:02,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 271.0) internal successors, (542), 2 states have internal predecessors, (542), 0 states have call successors, (0), 0 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 19:32:02,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 19:32:02,224 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 19:32:02,226 INFO L175 Difference]: Start difference. First operand has 260 places, 268 transitions, 545 flow. Second operand 2 states and 542 transitions. [2022-11-18 19:32:02,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 257 transitions, 529 flow [2022-11-18 19:32:02,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 257 transitions, 524 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:32:02,250 INFO L231 Difference]: Finished difference. Result has 252 places, 257 transitions, 518 flow [2022-11-18 19:32:02,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=518, PETRI_PLACES=252, PETRI_TRANSITIONS=257} [2022-11-18 19:32:02,262 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, -8 predicate places. [2022-11-18 19:32:02,262 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 257 transitions, 518 flow [2022-11-18 19:32:02,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 267.5) internal successors, (535), 2 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 19:32:02,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:02,264 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] [2022-11-18 19:32:02,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:32:02,265 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 19:32:02,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:02,266 INFO L85 PathProgramCache]: Analyzing trace with hash -984262086, now seen corresponding path program 1 times [2022-11-18 19:32:02,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:02,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087409395] [2022-11-18 19:32:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:02,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:02,609 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 19:32:02,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:02,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087409395] [2022-11-18 19:32:02,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087409395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:02,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:02,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:32:02,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114614824] [2022-11-18 19:32:02,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:02,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:32:02,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:02,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:32:02,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:32:02,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 280 [2022-11-18 19:32:02,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 257 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 0 states have call successors, (0), 0 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 19:32:02,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:02,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 280 [2022-11-18 19:32:02,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:02,826 INFO L130 PetriNetUnfolder]: 27/442 cut-off events. [2022-11-18 19:32:02,827 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:32:02,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 442 events. 27/442 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1071 event pairs, 2 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 493. Up to 13 conditions per place. [2022-11-18 19:32:02,834 INFO L137 encePairwiseOnDemand]: 274/280 looper letters, 9 selfloop transitions, 5 changer transitions 0/257 dead transitions. [2022-11-18 19:32:02,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 257 transitions, 550 flow [2022-11-18 19:32:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:32:02,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:32:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1039 transitions. [2022-11-18 19:32:02,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9276785714285715 [2022-11-18 19:32:02,840 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1039 transitions. [2022-11-18 19:32:02,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1039 transitions. [2022-11-18 19:32:02,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:02,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1039 transitions. [2022-11-18 19:32:02,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 259.75) internal successors, (1039), 4 states have internal predecessors, (1039), 0 states have call successors, (0), 0 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 19:32:02,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 19:32:02,851 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 19:32:02,851 INFO L175 Difference]: Start difference. First operand has 252 places, 257 transitions, 518 flow. Second operand 4 states and 1039 transitions. [2022-11-18 19:32:02,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 257 transitions, 550 flow [2022-11-18 19:32:02,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 257 transitions, 550 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:32:02,864 INFO L231 Difference]: Finished difference. Result has 254 places, 255 transitions, 524 flow [2022-11-18 19:32:02,865 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=524, PETRI_PLACES=254, PETRI_TRANSITIONS=255} [2022-11-18 19:32:02,865 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, -6 predicate places. [2022-11-18 19:32:02,866 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 255 transitions, 524 flow [2022-11-18 19:32:02,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 0 states have call successors, (0), 0 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 19:32:02,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:02,868 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] [2022-11-18 19:32:02,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:32:02,869 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:32:02,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1146591334, now seen corresponding path program 1 times [2022-11-18 19:32:02,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:02,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352484629] [2022-11-18 19:32:02,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:02,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:03,305 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 19:32:03,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:03,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352484629] [2022-11-18 19:32:03,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352484629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:03,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:03,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:32:03,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805724085] [2022-11-18 19:32:03,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:03,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:32:03,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:03,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:32:03,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:32:03,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 280 [2022-11-18 19:32:03,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 255 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 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 19:32:03,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:03,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 280 [2022-11-18 19:32:03,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:03,451 INFO L130 PetriNetUnfolder]: 34/537 cut-off events. [2022-11-18 19:32:03,451 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-11-18 19:32:03,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 537 events. 34/537 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1271 event pairs, 2 based on Foata normal form. 0/502 useless extension candidates. Maximal degree in co-relation 591. Up to 23 conditions per place. [2022-11-18 19:32:03,455 INFO L137 encePairwiseOnDemand]: 276/280 looper letters, 10 selfloop transitions, 3 changer transitions 0/259 dead transitions. [2022-11-18 19:32:03,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 259 transitions, 561 flow [2022-11-18 19:32:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:32:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:32:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2022-11-18 19:32:03,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9488095238095238 [2022-11-18 19:32:03,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2022-11-18 19:32:03,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2022-11-18 19:32:03,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:03,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2022-11-18 19:32:03,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 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 19:32:03,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 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 19:32:03,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 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 19:32:03,467 INFO L175 Difference]: Start difference. First operand has 254 places, 255 transitions, 524 flow. Second operand 3 states and 797 transitions. [2022-11-18 19:32:03,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 259 transitions, 561 flow [2022-11-18 19:32:03,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 259 transitions, 551 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:32:03,473 INFO L231 Difference]: Finished difference. Result has 254 places, 256 transitions, 529 flow [2022-11-18 19:32:03,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=529, PETRI_PLACES=254, PETRI_TRANSITIONS=256} [2022-11-18 19:32:03,476 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, -6 predicate places. [2022-11-18 19:32:03,477 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 256 transitions, 529 flow [2022-11-18 19:32:03,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 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 19:32:03,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:03,478 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] [2022-11-18 19:32:03,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:32:03,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:32:03,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1700068689, now seen corresponding path program 1 times [2022-11-18 19:32:03,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:03,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62679898] [2022-11-18 19:32:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:03,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:03,650 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 19:32:03,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:03,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62679898] [2022-11-18 19:32:03,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62679898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:03,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:03,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:32:03,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667954006] [2022-11-18 19:32:03,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:03,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:32:03,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:03,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:32:03,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:32:03,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 280 [2022-11-18 19:32:03,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 256 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 259.75) internal successors, (1039), 4 states have internal predecessors, (1039), 0 states have call successors, (0), 0 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 19:32:03,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:03,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 280 [2022-11-18 19:32:03,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:03,885 INFO L130 PetriNetUnfolder]: 52/846 cut-off events. [2022-11-18 19:32:03,885 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-18 19:32:03,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 846 events. 52/846 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3012 event pairs, 7 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 949. Up to 27 conditions per place. [2022-11-18 19:32:03,892 INFO L137 encePairwiseOnDemand]: 275/280 looper letters, 15 selfloop transitions, 5 changer transitions 0/264 dead transitions. [2022-11-18 19:32:03,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 264 transitions, 592 flow [2022-11-18 19:32:03,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:32:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:32:03,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1311 transitions. [2022-11-18 19:32:03,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9364285714285714 [2022-11-18 19:32:03,897 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1311 transitions. [2022-11-18 19:32:03,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1311 transitions. [2022-11-18 19:32:03,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:03,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1311 transitions. [2022-11-18 19:32:03,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 262.2) internal successors, (1311), 5 states have internal predecessors, (1311), 0 states have call successors, (0), 0 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 19:32:03,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 19:32:03,911 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 19:32:03,911 INFO L175 Difference]: Start difference. First operand has 254 places, 256 transitions, 529 flow. Second operand 5 states and 1311 transitions. [2022-11-18 19:32:03,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 264 transitions, 592 flow [2022-11-18 19:32:03,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 264 transitions, 589 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:32:03,918 INFO L231 Difference]: Finished difference. Result has 260 places, 259 transitions, 556 flow [2022-11-18 19:32:03,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=260, PETRI_TRANSITIONS=259} [2022-11-18 19:32:03,925 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 0 predicate places. [2022-11-18 19:32:03,925 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 259 transitions, 556 flow [2022-11-18 19:32:03,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 259.75) internal successors, (1039), 4 states have internal predecessors, (1039), 0 states have call successors, (0), 0 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 19:32:03,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:03,926 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] [2022-11-18 19:32:03,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:32:03,927 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 19:32:03,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:03,928 INFO L85 PathProgramCache]: Analyzing trace with hash -21499411, now seen corresponding path program 1 times [2022-11-18 19:32:03,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:03,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691549977] [2022-11-18 19:32:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:03,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:04,916 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 19:32:04,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:04,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691549977] [2022-11-18 19:32:04,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691549977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:04,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:04,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:32:04,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628846219] [2022-11-18 19:32:04,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:04,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:32:04,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:04,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:32:04,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:32:04,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 280 [2022-11-18 19:32:04,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 259 transitions, 556 flow. Second operand has 12 states, 12 states have (on average 198.75) internal successors, (2385), 12 states have internal predecessors, (2385), 0 states have call successors, (0), 0 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 19:32:04,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:04,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 280 [2022-11-18 19:32:04,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:06,755 INFO L130 PetriNetUnfolder]: 1002/4662 cut-off events. [2022-11-18 19:32:06,756 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-18 19:32:06,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6531 conditions, 4662 events. 1002/4662 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 37716 event pairs, 839 based on Foata normal form. 0/4435 useless extension candidates. Maximal degree in co-relation 6524. Up to 1588 conditions per place. [2022-11-18 19:32:06,794 INFO L137 encePairwiseOnDemand]: 267/280 looper letters, 60 selfloop transitions, 12 changer transitions 0/255 dead transitions. [2022-11-18 19:32:06,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 255 transitions, 692 flow [2022-11-18 19:32:06,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:32:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:32:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2608 transitions. [2022-11-18 19:32:06,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7164835164835165 [2022-11-18 19:32:06,802 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2608 transitions. [2022-11-18 19:32:06,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2608 transitions. [2022-11-18 19:32:06,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:06,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2608 transitions. [2022-11-18 19:32:06,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 200.6153846153846) internal successors, (2608), 13 states have internal predecessors, (2608), 0 states have call successors, (0), 0 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 19:32:06,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 280.0) internal successors, (3920), 14 states have internal predecessors, (3920), 0 states have call successors, (0), 0 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 19:32:06,820 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 280.0) internal successors, (3920), 14 states have internal predecessors, (3920), 0 states have call successors, (0), 0 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 19:32:06,821 INFO L175 Difference]: Start difference. First operand has 260 places, 259 transitions, 556 flow. Second operand 13 states and 2608 transitions. [2022-11-18 19:32:06,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 255 transitions, 692 flow [2022-11-18 19:32:06,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 255 transitions, 692 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:32:06,828 INFO L231 Difference]: Finished difference. Result has 269 places, 255 transitions, 572 flow [2022-11-18 19:32:06,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=572, PETRI_PLACES=269, PETRI_TRANSITIONS=255} [2022-11-18 19:32:06,829 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 9 predicate places. [2022-11-18 19:32:06,829 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 255 transitions, 572 flow [2022-11-18 19:32:06,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.75) internal successors, (2385), 12 states have internal predecessors, (2385), 0 states have call successors, (0), 0 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 19:32:06,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:06,831 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:06,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:32:06,832 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 19:32:06,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:06,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1188505159, now seen corresponding path program 1 times [2022-11-18 19:32:06,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:06,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768513900] [2022-11-18 19:32:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:06,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:08,535 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 19:32:08,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:08,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768513900] [2022-11-18 19:32:08,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768513900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:08,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:08,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 19:32:08,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15290165] [2022-11-18 19:32:08,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:08,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:32:08,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:08,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:32:08,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:32:08,545 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 280 [2022-11-18 19:32:08,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 255 transitions, 572 flow. Second operand has 18 states, 18 states have (on average 178.11111111111111) internal successors, (3206), 18 states have internal predecessors, (3206), 0 states have call successors, (0), 0 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 19:32:08,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:08,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 280 [2022-11-18 19:32:08,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:11,141 INFO L130 PetriNetUnfolder]: 1599/6675 cut-off events. [2022-11-18 19:32:11,142 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-18 19:32:11,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9656 conditions, 6675 events. 1599/6675 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 58299 event pairs, 1290 based on Foata normal form. 0/6323 useless extension candidates. Maximal degree in co-relation 9648. Up to 2556 conditions per place. [2022-11-18 19:32:11,196 INFO L137 encePairwiseOnDemand]: 263/280 looper letters, 93 selfloop transitions, 21 changer transitions 0/277 dead transitions. [2022-11-18 19:32:11,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 277 transitions, 846 flow [2022-11-18 19:32:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:32:11,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 19:32:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2916 transitions. [2022-11-18 19:32:11,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6508928571428572 [2022-11-18 19:32:11,206 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2916 transitions. [2022-11-18 19:32:11,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2916 transitions. [2022-11-18 19:32:11,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:11,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2916 transitions. [2022-11-18 19:32:11,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 182.25) internal successors, (2916), 16 states have internal predecessors, (2916), 0 states have call successors, (0), 0 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 19:32:11,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 280.0) internal successors, (4760), 17 states have internal predecessors, (4760), 0 states have call successors, (0), 0 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 19:32:11,228 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 280.0) internal successors, (4760), 17 states have internal predecessors, (4760), 0 states have call successors, (0), 0 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 19:32:11,228 INFO L175 Difference]: Start difference. First operand has 269 places, 255 transitions, 572 flow. Second operand 16 states and 2916 transitions. [2022-11-18 19:32:11,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 277 transitions, 846 flow [2022-11-18 19:32:11,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 277 transitions, 823 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 19:32:11,238 INFO L231 Difference]: Finished difference. Result has 279 places, 268 transitions, 658 flow [2022-11-18 19:32:11,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=658, PETRI_PLACES=279, PETRI_TRANSITIONS=268} [2022-11-18 19:32:11,242 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 19 predicate places. [2022-11-18 19:32:11,242 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 268 transitions, 658 flow [2022-11-18 19:32:11,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 178.11111111111111) internal successors, (3206), 18 states have internal predecessors, (3206), 0 states have call successors, (0), 0 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 19:32:11,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:11,244 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] [2022-11-18 19:32:11,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:32:11,245 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 19:32:11,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:11,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1112308556, now seen corresponding path program 1 times [2022-11-18 19:32:11,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:11,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457639898] [2022-11-18 19:32:11,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:11,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:15,115 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 19:32:15,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:15,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457639898] [2022-11-18 19:32:15,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457639898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:15,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:15,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-18 19:32:15,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131870680] [2022-11-18 19:32:15,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:15,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:32:15,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:32:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:32:15,126 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 280 [2022-11-18 19:32:15,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 268 transitions, 658 flow. Second operand has 27 states, 27 states have (on average 164.4814814814815) internal successors, (4441), 27 states have internal predecessors, (4441), 0 states have call successors, (0), 0 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 19:32:15,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:15,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 280 [2022-11-18 19:32:15,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:19,251 INFO L130 PetriNetUnfolder]: 1457/6035 cut-off events. [2022-11-18 19:32:19,251 INFO L131 PetriNetUnfolder]: For 116/120 co-relation queries the response was YES. [2022-11-18 19:32:19,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8888 conditions, 6035 events. 1457/6035 cut-off events. For 116/120 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 51363 event pairs, 1160 based on Foata normal form. 2/5759 useless extension candidates. Maximal degree in co-relation 8874. Up to 2313 conditions per place. [2022-11-18 19:32:19,313 INFO L137 encePairwiseOnDemand]: 249/280 looper letters, 103 selfloop transitions, 44 changer transitions 0/302 dead transitions. [2022-11-18 19:32:19,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 302 transitions, 1042 flow [2022-11-18 19:32:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:32:19,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 19:32:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4684 transitions. [2022-11-18 19:32:19,324 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5974489795918367 [2022-11-18 19:32:19,325 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4684 transitions. [2022-11-18 19:32:19,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4684 transitions. [2022-11-18 19:32:19,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:19,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4684 transitions. [2022-11-18 19:32:19,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 167.28571428571428) internal successors, (4684), 28 states have internal predecessors, (4684), 0 states have call successors, (0), 0 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 19:32:19,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 280.0) internal successors, (8120), 29 states have internal predecessors, (8120), 0 states have call successors, (0), 0 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 19:32:19,373 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 280.0) internal successors, (8120), 29 states have internal predecessors, (8120), 0 states have call successors, (0), 0 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 19:32:19,373 INFO L175 Difference]: Start difference. First operand has 279 places, 268 transitions, 658 flow. Second operand 28 states and 4684 transitions. [2022-11-18 19:32:19,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 302 transitions, 1042 flow [2022-11-18 19:32:19,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 302 transitions, 1027 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 19:32:19,386 INFO L231 Difference]: Finished difference. Result has 309 places, 288 transitions, 870 flow [2022-11-18 19:32:19,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=870, PETRI_PLACES=309, PETRI_TRANSITIONS=288} [2022-11-18 19:32:19,387 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 49 predicate places. [2022-11-18 19:32:19,388 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 288 transitions, 870 flow [2022-11-18 19:32:19,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 164.4814814814815) internal successors, (4441), 27 states have internal predecessors, (4441), 0 states have call successors, (0), 0 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 19:32:19,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:19,390 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] [2022-11-18 19:32:19,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:32:19,390 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 19:32:19,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:19,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1012938833, now seen corresponding path program 1 times [2022-11-18 19:32:19,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:19,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330153113] [2022-11-18 19:32:19,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:19,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:20,725 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 19:32:20,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:20,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330153113] [2022-11-18 19:32:20,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330153113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:20,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:20,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 19:32:20,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353796853] [2022-11-18 19:32:20,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:20,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:32:20,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:20,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:32:20,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:32:20,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 280 [2022-11-18 19:32:20,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 288 transitions, 870 flow. Second operand has 20 states, 20 states have (on average 176.85) internal successors, (3537), 20 states have internal predecessors, (3537), 0 states have call successors, (0), 0 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 19:32:20,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:20,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 280 [2022-11-18 19:32:20,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:23,309 INFO L130 PetriNetUnfolder]: 1619/6783 cut-off events. [2022-11-18 19:32:23,309 INFO L131 PetriNetUnfolder]: For 394/399 co-relation queries the response was YES. [2022-11-18 19:32:23,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10248 conditions, 6783 events. 1619/6783 cut-off events. For 394/399 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 59222 event pairs, 734 based on Foata normal form. 3/6438 useless extension candidates. Maximal degree in co-relation 10223. Up to 2470 conditions per place. [2022-11-18 19:32:23,369 INFO L137 encePairwiseOnDemand]: 259/280 looper letters, 121 selfloop transitions, 34 changer transitions 0/324 dead transitions. [2022-11-18 19:32:23,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 324 transitions, 1292 flow [2022-11-18 19:32:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:32:23,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 19:32:23,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3093 transitions. [2022-11-18 19:32:23,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6497899159663866 [2022-11-18 19:32:23,378 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3093 transitions. [2022-11-18 19:32:23,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3093 transitions. [2022-11-18 19:32:23,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:23,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3093 transitions. [2022-11-18 19:32:23,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 181.94117647058823) internal successors, (3093), 17 states have internal predecessors, (3093), 0 states have call successors, (0), 0 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 19:32:23,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 280.0) internal successors, (5040), 18 states have internal predecessors, (5040), 0 states have call successors, (0), 0 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 19:32:23,399 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 280.0) internal successors, (5040), 18 states have internal predecessors, (5040), 0 states have call successors, (0), 0 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 19:32:23,399 INFO L175 Difference]: Start difference. First operand has 309 places, 288 transitions, 870 flow. Second operand 17 states and 3093 transitions. [2022-11-18 19:32:23,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 324 transitions, 1292 flow [2022-11-18 19:32:23,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 324 transitions, 1246 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-18 19:32:23,412 INFO L231 Difference]: Finished difference. Result has 315 places, 298 transitions, 989 flow [2022-11-18 19:32:23,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=989, PETRI_PLACES=315, PETRI_TRANSITIONS=298} [2022-11-18 19:32:23,417 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 55 predicate places. [2022-11-18 19:32:23,417 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 298 transitions, 989 flow [2022-11-18 19:32:23,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 176.85) internal successors, (3537), 20 states have internal predecessors, (3537), 0 states have call successors, (0), 0 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 19:32:23,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:23,419 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] [2022-11-18 19:32:23,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:32:23,419 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 19:32:23,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:23,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1189433083, now seen corresponding path program 2 times [2022-11-18 19:32:23,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:23,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493023849] [2022-11-18 19:32:23,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:23,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:24,387 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 19:32:24,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:24,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493023849] [2022-11-18 19:32:24,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493023849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:24,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:24,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-18 19:32:24,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060506056] [2022-11-18 19:32:24,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:24,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:32:24,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:24,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:32:24,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:32:24,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 280 [2022-11-18 19:32:24,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 298 transitions, 989 flow. Second operand has 17 states, 17 states have (on average 179.23529411764707) internal successors, (3047), 17 states have internal predecessors, (3047), 0 states have call successors, (0), 0 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 19:32:24,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:24,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 280 [2022-11-18 19:32:24,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:26,930 INFO L130 PetriNetUnfolder]: 1640/6861 cut-off events. [2022-11-18 19:32:26,930 INFO L131 PetriNetUnfolder]: For 646/651 co-relation queries the response was YES. [2022-11-18 19:32:27,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10582 conditions, 6861 events. 1640/6861 cut-off events. For 646/651 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 59929 event pairs, 735 based on Foata normal form. 3/6516 useless extension candidates. Maximal degree in co-relation 10552. Up to 2475 conditions per place. [2022-11-18 19:32:27,033 INFO L137 encePairwiseOnDemand]: 261/280 looper letters, 121 selfloop transitions, 37 changer transitions 0/329 dead transitions. [2022-11-18 19:32:27,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 329 transitions, 1426 flow [2022-11-18 19:32:27,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:32:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 19:32:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2595 transitions. [2022-11-18 19:32:27,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6619897959183674 [2022-11-18 19:32:27,041 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2595 transitions. [2022-11-18 19:32:27,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2595 transitions. [2022-11-18 19:32:27,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:27,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2595 transitions. [2022-11-18 19:32:27,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 185.35714285714286) internal successors, (2595), 14 states have internal predecessors, (2595), 0 states have call successors, (0), 0 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 19:32:27,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 280.0) internal successors, (4200), 15 states have internal predecessors, (4200), 0 states have call successors, (0), 0 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 19:32:27,061 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 280.0) internal successors, (4200), 15 states have internal predecessors, (4200), 0 states have call successors, (0), 0 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 19:32:27,062 INFO L175 Difference]: Start difference. First operand has 315 places, 298 transitions, 989 flow. Second operand 14 states and 2595 transitions. [2022-11-18 19:32:27,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 329 transitions, 1426 flow [2022-11-18 19:32:27,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 329 transitions, 1392 flow, removed 6 selfloop flow, removed 11 redundant places. [2022-11-18 19:32:27,074 INFO L231 Difference]: Finished difference. Result has 321 places, 304 transitions, 1131 flow [2022-11-18 19:32:27,075 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1131, PETRI_PLACES=321, PETRI_TRANSITIONS=304} [2022-11-18 19:32:27,076 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 61 predicate places. [2022-11-18 19:32:27,076 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 304 transitions, 1131 flow [2022-11-18 19:32:27,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 179.23529411764707) internal successors, (3047), 17 states have internal predecessors, (3047), 0 states have call successors, (0), 0 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 19:32:27,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:27,078 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] [2022-11-18 19:32:27,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:32:27,078 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 19:32:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:27,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1315861123, now seen corresponding path program 3 times [2022-11-18 19:32:27,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:27,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019580813] [2022-11-18 19:32:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:27,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:28,160 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 19:32:28,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:28,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019580813] [2022-11-18 19:32:28,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019580813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:28,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:28,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 19:32:28,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724883256] [2022-11-18 19:32:28,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:28,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:32:28,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:28,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:32:28,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:32:28,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 280 [2022-11-18 19:32:28,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 304 transitions, 1131 flow. Second operand has 18 states, 18 states have (on average 177.16666666666666) internal successors, (3189), 18 states have internal predecessors, (3189), 0 states have call successors, (0), 0 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 19:32:28,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:28,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 280 [2022-11-18 19:32:28,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:30,390 INFO L130 PetriNetUnfolder]: 1625/6846 cut-off events. [2022-11-18 19:32:30,390 INFO L131 PetriNetUnfolder]: For 1090/1095 co-relation queries the response was YES. [2022-11-18 19:32:30,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10647 conditions, 6846 events. 1625/6846 cut-off events. For 1090/1095 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 60117 event pairs, 741 based on Foata normal form. 6/6502 useless extension candidates. Maximal degree in co-relation 10614. Up to 2414 conditions per place. [2022-11-18 19:32:30,446 INFO L137 encePairwiseOnDemand]: 263/280 looper letters, 105 selfloop transitions, 36 changer transitions 0/310 dead transitions. [2022-11-18 19:32:30,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 310 transitions, 1421 flow [2022-11-18 19:32:30,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:32:30,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 19:32:30,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2715 transitions. [2022-11-18 19:32:30,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6464285714285715 [2022-11-18 19:32:30,452 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2715 transitions. [2022-11-18 19:32:30,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2715 transitions. [2022-11-18 19:32:30,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:30,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2715 transitions. [2022-11-18 19:32:30,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 181.0) internal successors, (2715), 15 states have internal predecessors, (2715), 0 states have call successors, (0), 0 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 19:32:30,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 280.0) internal successors, (4480), 16 states have internal predecessors, (4480), 0 states have call successors, (0), 0 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 19:32:30,468 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 280.0) internal successors, (4480), 16 states have internal predecessors, (4480), 0 states have call successors, (0), 0 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 19:32:30,469 INFO L175 Difference]: Start difference. First operand has 321 places, 304 transitions, 1131 flow. Second operand 15 states and 2715 transitions. [2022-11-18 19:32:30,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 310 transitions, 1421 flow [2022-11-18 19:32:30,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 310 transitions, 1387 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-18 19:32:30,481 INFO L231 Difference]: Finished difference. Result has 323 places, 300 transitions, 1147 flow [2022-11-18 19:32:30,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1147, PETRI_PLACES=323, PETRI_TRANSITIONS=300} [2022-11-18 19:32:30,483 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 63 predicate places. [2022-11-18 19:32:30,483 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 300 transitions, 1147 flow [2022-11-18 19:32:30,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 177.16666666666666) internal successors, (3189), 18 states have internal predecessors, (3189), 0 states have call successors, (0), 0 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 19:32:30,484 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:30,485 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] [2022-11-18 19:32:30,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:32:30,485 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 19:32:30,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:30,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1233746006, now seen corresponding path program 1 times [2022-11-18 19:32:30,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:30,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207354106] [2022-11-18 19:32:30,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:30,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:37,430 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 19:32:37,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:37,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207354106] [2022-11-18 19:32:37,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207354106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:37,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:37,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-18 19:32:37,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125893411] [2022-11-18 19:32:37,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:37,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:32:37,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:37,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:32:37,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:32:37,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 280 [2022-11-18 19:32:37,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 300 transitions, 1147 flow. Second operand has 27 states, 27 states have (on average 169.40740740740742) internal successors, (4574), 27 states have internal predecessors, (4574), 0 states have call successors, (0), 0 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 19:32:37,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:37,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 280 [2022-11-18 19:32:37,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:42,870 INFO L130 PetriNetUnfolder]: 1548/6468 cut-off events. [2022-11-18 19:32:42,870 INFO L131 PetriNetUnfolder]: For 1204/1208 co-relation queries the response was YES. [2022-11-18 19:32:42,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10274 conditions, 6468 events. 1548/6468 cut-off events. For 1204/1208 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 55140 event pairs, 920 based on Foata normal form. 3/6186 useless extension candidates. Maximal degree in co-relation 10242. Up to 2266 conditions per place. [2022-11-18 19:32:42,939 INFO L137 encePairwiseOnDemand]: 250/280 looper letters, 136 selfloop transitions, 65 changer transitions 0/359 dead transitions. [2022-11-18 19:32:42,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 359 transitions, 1779 flow [2022-11-18 19:32:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:32:42,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 19:32:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4848 transitions. [2022-11-18 19:32:42,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6183673469387755 [2022-11-18 19:32:42,949 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4848 transitions. [2022-11-18 19:32:42,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4848 transitions. [2022-11-18 19:32:42,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:42,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4848 transitions. [2022-11-18 19:32:42,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 173.14285714285714) internal successors, (4848), 28 states have internal predecessors, (4848), 0 states have call successors, (0), 0 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 19:32:42,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 280.0) internal successors, (8120), 29 states have internal predecessors, (8120), 0 states have call successors, (0), 0 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 19:32:42,985 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 280.0) internal successors, (8120), 29 states have internal predecessors, (8120), 0 states have call successors, (0), 0 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 19:32:42,986 INFO L175 Difference]: Start difference. First operand has 323 places, 300 transitions, 1147 flow. Second operand 28 states and 4848 transitions. [2022-11-18 19:32:42,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 359 transitions, 1779 flow [2022-11-18 19:32:42,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 359 transitions, 1705 flow, removed 0 selfloop flow, removed 14 redundant places. [2022-11-18 19:32:43,003 INFO L231 Difference]: Finished difference. Result has 346 places, 312 transitions, 1362 flow [2022-11-18 19:32:43,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1362, PETRI_PLACES=346, PETRI_TRANSITIONS=312} [2022-11-18 19:32:43,004 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 86 predicate places. [2022-11-18 19:32:43,004 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 312 transitions, 1362 flow [2022-11-18 19:32:43,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 169.40740740740742) internal successors, (4574), 27 states have internal predecessors, (4574), 0 states have call successors, (0), 0 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 19:32:43,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:43,006 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] [2022-11-18 19:32:43,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:32:43,007 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:32:43,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1186446142, now seen corresponding path program 2 times [2022-11-18 19:32:43,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:43,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611556398] [2022-11-18 19:32:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:43,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:45,437 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 19:32:45,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:45,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611556398] [2022-11-18 19:32:45,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611556398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:45,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:45,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-18 19:32:45,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807054224] [2022-11-18 19:32:45,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:45,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:32:45,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:32:45,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:32:45,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 280 [2022-11-18 19:32:45,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 312 transitions, 1362 flow. Second operand has 27 states, 27 states have (on average 169.40740740740742) internal successors, (4574), 27 states have internal predecessors, (4574), 0 states have call successors, (0), 0 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 19:32:45,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:45,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 280 [2022-11-18 19:32:45,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:48,977 INFO L130 PetriNetUnfolder]: 1589/6607 cut-off events. [2022-11-18 19:32:48,977 INFO L131 PetriNetUnfolder]: For 1542/1546 co-relation queries the response was YES. [2022-11-18 19:32:49,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10820 conditions, 6607 events. 1589/6607 cut-off events. For 1542/1546 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 56249 event pairs, 688 based on Foata normal form. 3/6274 useless extension candidates. Maximal degree in co-relation 10778. Up to 2115 conditions per place. [2022-11-18 19:32:49,046 INFO L137 encePairwiseOnDemand]: 251/280 looper letters, 138 selfloop transitions, 66 changer transitions 0/362 dead transitions. [2022-11-18 19:32:49,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 362 transitions, 1936 flow [2022-11-18 19:32:49,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:32:49,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 19:32:49,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4504 transitions. [2022-11-18 19:32:49,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6186813186813187 [2022-11-18 19:32:49,054 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4504 transitions. [2022-11-18 19:32:49,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4504 transitions. [2022-11-18 19:32:49,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:49,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4504 transitions. [2022-11-18 19:32:49,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 173.23076923076923) internal successors, (4504), 26 states have internal predecessors, (4504), 0 states have call successors, (0), 0 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 19:32:49,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 280.0) internal successors, (7560), 27 states have internal predecessors, (7560), 0 states have call successors, (0), 0 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 19:32:49,077 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 280.0) internal successors, (7560), 27 states have internal predecessors, (7560), 0 states have call successors, (0), 0 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 19:32:49,077 INFO L175 Difference]: Start difference. First operand has 346 places, 312 transitions, 1362 flow. Second operand 26 states and 4504 transitions. [2022-11-18 19:32:49,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 362 transitions, 1936 flow [2022-11-18 19:32:49,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 362 transitions, 1853 flow, removed 14 selfloop flow, removed 16 redundant places. [2022-11-18 19:32:49,093 INFO L231 Difference]: Finished difference. Result has 360 places, 319 transitions, 1517 flow [2022-11-18 19:32:49,093 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1517, PETRI_PLACES=360, PETRI_TRANSITIONS=319} [2022-11-18 19:32:49,094 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 100 predicate places. [2022-11-18 19:32:49,094 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 319 transitions, 1517 flow [2022-11-18 19:32:49,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 169.40740740740742) internal successors, (4574), 27 states have internal predecessors, (4574), 0 states have call successors, (0), 0 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 19:32:49,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:49,096 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] [2022-11-18 19:32:49,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:32:49,097 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:32:49,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:49,097 INFO L85 PathProgramCache]: Analyzing trace with hash 786847334, now seen corresponding path program 3 times [2022-11-18 19:32:49,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:49,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187722537] [2022-11-18 19:32:49,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:49,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:51,445 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 19:32:51,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:51,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187722537] [2022-11-18 19:32:51,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187722537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:51,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:51,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-18 19:32:51,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386584763] [2022-11-18 19:32:51,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:51,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:32:51,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:51,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:32:51,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:32:51,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 280 [2022-11-18 19:32:51,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 319 transitions, 1517 flow. Second operand has 28 states, 28 states have (on average 169.32142857142858) internal successors, (4741), 28 states have internal predecessors, (4741), 0 states have call successors, (0), 0 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 19:32:51,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:51,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 280 [2022-11-18 19:32:51,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:55,682 INFO L130 PetriNetUnfolder]: 1614/6744 cut-off events. [2022-11-18 19:32:55,682 INFO L131 PetriNetUnfolder]: For 1854/1861 co-relation queries the response was YES. [2022-11-18 19:32:55,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11228 conditions, 6744 events. 1614/6744 cut-off events. For 1854/1861 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 57471 event pairs, 671 based on Foata normal form. 4/6404 useless extension candidates. Maximal degree in co-relation 11182. Up to 2118 conditions per place. [2022-11-18 19:32:55,769 INFO L137 encePairwiseOnDemand]: 250/280 looper letters, 140 selfloop transitions, 73 changer transitions 0/371 dead transitions. [2022-11-18 19:32:55,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 371 transitions, 2128 flow [2022-11-18 19:32:55,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:32:55,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 19:32:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4841 transitions. [2022-11-18 19:32:55,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6174744897959183 [2022-11-18 19:32:55,779 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4841 transitions. [2022-11-18 19:32:55,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4841 transitions. [2022-11-18 19:32:55,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:55,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4841 transitions. [2022-11-18 19:32:55,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 172.89285714285714) internal successors, (4841), 28 states have internal predecessors, (4841), 0 states have call successors, (0), 0 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 19:32:55,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 280.0) internal successors, (8120), 29 states have internal predecessors, (8120), 0 states have call successors, (0), 0 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 19:32:55,806 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 280.0) internal successors, (8120), 29 states have internal predecessors, (8120), 0 states have call successors, (0), 0 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 19:32:55,806 INFO L175 Difference]: Start difference. First operand has 360 places, 319 transitions, 1517 flow. Second operand 28 states and 4841 transitions. [2022-11-18 19:32:55,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 371 transitions, 2128 flow [2022-11-18 19:32:55,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 371 transitions, 2036 flow, removed 5 selfloop flow, removed 19 redundant places. [2022-11-18 19:32:55,827 INFO L231 Difference]: Finished difference. Result has 372 places, 327 transitions, 1686 flow [2022-11-18 19:32:55,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1427, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1686, PETRI_PLACES=372, PETRI_TRANSITIONS=327} [2022-11-18 19:32:55,829 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 112 predicate places. [2022-11-18 19:32:55,829 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 327 transitions, 1686 flow [2022-11-18 19:32:55,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 169.32142857142858) internal successors, (4741), 28 states have internal predecessors, (4741), 0 states have call successors, (0), 0 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 19:32:55,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:55,831 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:55,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:32:55,832 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:32:55,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:55,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1441174860, now seen corresponding path program 4 times [2022-11-18 19:32:55,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:55,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159615812] [2022-11-18 19:32:55,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:55,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:57,967 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 19:32:57,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:57,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159615812] [2022-11-18 19:32:57,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159615812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:57,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:57,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-18 19:32:57,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617834725] [2022-11-18 19:32:57,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:57,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:32:57,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:57,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:32:57,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:32:57,973 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 280 [2022-11-18 19:32:57,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 327 transitions, 1686 flow. Second operand has 25 states, 25 states have (on average 171.52) internal successors, (4288), 25 states have internal predecessors, (4288), 0 states have call successors, (0), 0 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 19:32:57,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:57,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 280 [2022-11-18 19:32:57,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:01,116 INFO L130 PetriNetUnfolder]: 937/4049 cut-off events. [2022-11-18 19:33:01,117 INFO L131 PetriNetUnfolder]: For 2133/2139 co-relation queries the response was YES. [2022-11-18 19:33:01,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7428 conditions, 4049 events. 937/4049 cut-off events. For 2133/2139 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 28780 event pairs, 351 based on Foata normal form. 3/3854 useless extension candidates. Maximal degree in co-relation 7379. Up to 1091 conditions per place. [2022-11-18 19:33:01,156 INFO L137 encePairwiseOnDemand]: 255/280 looper letters, 129 selfloop transitions, 66 changer transitions 0/347 dead transitions. [2022-11-18 19:33:01,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 347 transitions, 2127 flow [2022-11-18 19:33:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:33:01,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 19:33:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4027 transitions. [2022-11-18 19:33:01,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6253105590062111 [2022-11-18 19:33:01,161 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4027 transitions. [2022-11-18 19:33:01,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4027 transitions. [2022-11-18 19:33:01,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:01,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4027 transitions. [2022-11-18 19:33:01,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 175.08695652173913) internal successors, (4027), 23 states have internal predecessors, (4027), 0 states have call successors, (0), 0 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 19:33:01,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 280.0) internal successors, (6720), 24 states have internal predecessors, (6720), 0 states have call successors, (0), 0 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 19:33:01,179 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 280.0) internal successors, (6720), 24 states have internal predecessors, (6720), 0 states have call successors, (0), 0 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 19:33:01,179 INFO L175 Difference]: Start difference. First operand has 372 places, 327 transitions, 1686 flow. Second operand 23 states and 4027 transitions. [2022-11-18 19:33:01,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 347 transitions, 2127 flow [2022-11-18 19:33:01,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 347 transitions, 2001 flow, removed 3 selfloop flow, removed 28 redundant places. [2022-11-18 19:33:01,199 INFO L231 Difference]: Finished difference. Result has 358 places, 316 transitions, 1654 flow [2022-11-18 19:33:01,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1654, PETRI_PLACES=358, PETRI_TRANSITIONS=316} [2022-11-18 19:33:01,200 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 98 predicate places. [2022-11-18 19:33:01,200 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 316 transitions, 1654 flow [2022-11-18 19:33:01,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 171.52) internal successors, (4288), 25 states have internal predecessors, (4288), 0 states have call successors, (0), 0 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 19:33:01,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:01,202 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] [2022-11-18 19:33:01,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:33:01,202 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 19:33:01,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:01,203 INFO L85 PathProgramCache]: Analyzing trace with hash -469476999, now seen corresponding path program 1 times [2022-11-18 19:33:01,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:01,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140316674] [2022-11-18 19:33:01,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:01,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:01,335 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 19:33:01,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:01,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140316674] [2022-11-18 19:33:01,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140316674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:01,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:01,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:01,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386328661] [2022-11-18 19:33:01,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:01,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:33:01,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:01,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:33:01,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:33:01,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 280 [2022-11-18 19:33:01,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 316 transitions, 1654 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:01,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:01,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 280 [2022-11-18 19:33:01,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:01,614 INFO L130 PetriNetUnfolder]: 97/1289 cut-off events. [2022-11-18 19:33:01,614 INFO L131 PetriNetUnfolder]: For 1067/1068 co-relation queries the response was YES. [2022-11-18 19:33:01,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 1289 events. 97/1289 cut-off events. For 1067/1068 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6917 event pairs, 16 based on Foata normal form. 30/1244 useless extension candidates. Maximal degree in co-relation 2221. Up to 74 conditions per place. [2022-11-18 19:33:01,626 INFO L137 encePairwiseOnDemand]: 274/280 looper letters, 12 selfloop transitions, 6 changer transitions 0/318 dead transitions. [2022-11-18 19:33:01,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 318 transitions, 1697 flow [2022-11-18 19:33:01,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:33:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:33:01,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 783 transitions. [2022-11-18 19:33:01,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9321428571428572 [2022-11-18 19:33:01,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 783 transitions. [2022-11-18 19:33:01,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 783 transitions. [2022-11-18 19:33:01,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:01,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 783 transitions. [2022-11-18 19:33:01,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 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 19:33:01,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 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 19:33:01,633 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 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 19:33:01,634 INFO L175 Difference]: Start difference. First operand has 358 places, 316 transitions, 1654 flow. Second operand 3 states and 783 transitions. [2022-11-18 19:33:01,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 318 transitions, 1697 flow [2022-11-18 19:33:01,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 318 transitions, 1565 flow, removed 0 selfloop flow, removed 22 redundant places. [2022-11-18 19:33:01,649 INFO L231 Difference]: Finished difference. Result has 338 places, 316 transitions, 1534 flow [2022-11-18 19:33:01,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1534, PETRI_PLACES=338, PETRI_TRANSITIONS=316} [2022-11-18 19:33:01,650 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 78 predicate places. [2022-11-18 19:33:01,650 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 316 transitions, 1534 flow [2022-11-18 19:33:01,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:01,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:01,651 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 19:33:01,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:33:01,651 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 19:33:01,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:01,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1729947160, now seen corresponding path program 1 times [2022-11-18 19:33:01,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:01,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009263298] [2022-11-18 19:33:01,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:01,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:03,907 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 19:33:03,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:03,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009263298] [2022-11-18 19:33:03,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009263298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:03,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:03,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-18 19:33:03,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646778540] [2022-11-18 19:33:03,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:03,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:33:03,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:03,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:33:03,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:33:03,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 280 [2022-11-18 19:33:03,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 316 transitions, 1534 flow. Second operand has 27 states, 27 states have (on average 170.11111111111111) internal successors, (4593), 27 states have internal predecessors, (4593), 0 states have call successors, (0), 0 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 19:33:03,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:03,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 280 [2022-11-18 19:33:03,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:07,263 INFO L130 PetriNetUnfolder]: 632/3097 cut-off events. [2022-11-18 19:33:07,263 INFO L131 PetriNetUnfolder]: For 2119/2127 co-relation queries the response was YES. [2022-11-18 19:33:07,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6483 conditions, 3097 events. 632/3097 cut-off events. For 2119/2127 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 21178 event pairs, 71 based on Foata normal form. 0/2960 useless extension candidates. Maximal degree in co-relation 6440. Up to 433 conditions per place. [2022-11-18 19:33:07,286 INFO L137 encePairwiseOnDemand]: 245/280 looper letters, 175 selfloop transitions, 81 changer transitions 0/409 dead transitions. [2022-11-18 19:33:07,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 409 transitions, 2357 flow [2022-11-18 19:33:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:33:07,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 19:33:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 5378 transitions. [2022-11-18 19:33:07,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6195852534562212 [2022-11-18 19:33:07,292 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 5378 transitions. [2022-11-18 19:33:07,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 5378 transitions. [2022-11-18 19:33:07,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:07,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 5378 transitions. [2022-11-18 19:33:07,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 173.48387096774192) internal successors, (5378), 31 states have internal predecessors, (5378), 0 states have call successors, (0), 0 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 19:33:07,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 280.0) internal successors, (8960), 32 states have internal predecessors, (8960), 0 states have call successors, (0), 0 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 19:33:07,312 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 280.0) internal successors, (8960), 32 states have internal predecessors, (8960), 0 states have call successors, (0), 0 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 19:33:07,312 INFO L175 Difference]: Start difference. First operand has 338 places, 316 transitions, 1534 flow. Second operand 31 states and 5378 transitions. [2022-11-18 19:33:07,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 409 transitions, 2357 flow [2022-11-18 19:33:07,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 409 transitions, 2351 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:07,333 INFO L231 Difference]: Finished difference. Result has 374 places, 339 transitions, 1887 flow [2022-11-18 19:33:07,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1887, PETRI_PLACES=374, PETRI_TRANSITIONS=339} [2022-11-18 19:33:07,334 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 114 predicate places. [2022-11-18 19:33:07,334 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 339 transitions, 1887 flow [2022-11-18 19:33:07,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 170.11111111111111) internal successors, (4593), 27 states have internal predecessors, (4593), 0 states have call successors, (0), 0 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 19:33:07,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:07,335 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 19:33:07,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:33:07,336 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 19:33:07,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:07,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2068455394, now seen corresponding path program 2 times [2022-11-18 19:33:07,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:07,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740340688] [2022-11-18 19:33:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:07,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,277 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 19:33:10,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:10,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740340688] [2022-11-18 19:33:10,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740340688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:10,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:10,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-18 19:33:10,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818674304] [2022-11-18 19:33:10,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:10,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:33:10,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:10,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:33:10,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:33:10,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 280 [2022-11-18 19:33:10,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 339 transitions, 1887 flow. Second operand has 34 states, 34 states have (on average 161.61764705882354) internal successors, (5495), 34 states have internal predecessors, (5495), 0 states have call successors, (0), 0 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 19:33:10,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:10,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 280 [2022-11-18 19:33:10,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:15,134 INFO L130 PetriNetUnfolder]: 654/3177 cut-off events. [2022-11-18 19:33:15,134 INFO L131 PetriNetUnfolder]: For 3257/3272 co-relation queries the response was YES. [2022-11-18 19:33:15,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7306 conditions, 3177 events. 654/3177 cut-off events. For 3257/3272 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 21933 event pairs, 88 based on Foata normal form. 5/3057 useless extension candidates. Maximal degree in co-relation 7255. Up to 437 conditions per place. [2022-11-18 19:33:15,159 INFO L137 encePairwiseOnDemand]: 237/280 looper letters, 174 selfloop transitions, 101 changer transitions 0/423 dead transitions. [2022-11-18 19:33:15,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 423 transitions, 2707 flow [2022-11-18 19:33:15,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 19:33:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 19:33:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6255 transitions. [2022-11-18 19:33:15,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.587875939849624 [2022-11-18 19:33:15,167 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6255 transitions. [2022-11-18 19:33:15,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6255 transitions. [2022-11-18 19:33:15,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:15,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6255 transitions. [2022-11-18 19:33:15,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 164.60526315789474) internal successors, (6255), 38 states have internal predecessors, (6255), 0 states have call successors, (0), 0 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 19:33:15,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 280.0) internal successors, (10920), 39 states have internal predecessors, (10920), 0 states have call successors, (0), 0 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 19:33:15,189 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 280.0) internal successors, (10920), 39 states have internal predecessors, (10920), 0 states have call successors, (0), 0 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 19:33:15,189 INFO L175 Difference]: Start difference. First operand has 374 places, 339 transitions, 1887 flow. Second operand 38 states and 6255 transitions. [2022-11-18 19:33:15,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 423 transitions, 2707 flow [2022-11-18 19:33:15,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 423 transitions, 2590 flow, removed 8 selfloop flow, removed 18 redundant places. [2022-11-18 19:33:15,216 INFO L231 Difference]: Finished difference. Result has 399 places, 350 transitions, 2089 flow [2022-11-18 19:33:15,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=2089, PETRI_PLACES=399, PETRI_TRANSITIONS=350} [2022-11-18 19:33:15,217 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 139 predicate places. [2022-11-18 19:33:15,217 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 350 transitions, 2089 flow [2022-11-18 19:33:15,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 161.61764705882354) internal successors, (5495), 34 states have internal predecessors, (5495), 0 states have call successors, (0), 0 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 19:33:15,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:15,218 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 19:33:15,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:33:15,219 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 19:33:15,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:15,219 INFO L85 PathProgramCache]: Analyzing trace with hash 465855066, now seen corresponding path program 3 times [2022-11-18 19:33:15,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:15,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152642089] [2022-11-18 19:33:15,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:15,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:18,377 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 19:33:18,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:18,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152642089] [2022-11-18 19:33:18,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152642089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:18,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:18,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-18 19:33:18,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922411128] [2022-11-18 19:33:18,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:18,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:33:18,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:18,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:33:18,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:33:18,383 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 280 [2022-11-18 19:33:18,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 350 transitions, 2089 flow. Second operand has 34 states, 34 states have (on average 161.61764705882354) internal successors, (5495), 34 states have internal predecessors, (5495), 0 states have call successors, (0), 0 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 19:33:18,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:18,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 280 [2022-11-18 19:33:18,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:22,718 INFO L130 PetriNetUnfolder]: 570/2786 cut-off events. [2022-11-18 19:33:22,718 INFO L131 PetriNetUnfolder]: For 3881/3896 co-relation queries the response was YES. [2022-11-18 19:33:22,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6924 conditions, 2786 events. 570/2786 cut-off events. For 3881/3896 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18617 event pairs, 66 based on Foata normal form. 6/2686 useless extension candidates. Maximal degree in co-relation 6867. Up to 369 conditions per place. [2022-11-18 19:33:22,735 INFO L137 encePairwiseOnDemand]: 241/280 looper letters, 153 selfloop transitions, 94 changer transitions 0/395 dead transitions. [2022-11-18 19:33:22,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 395 transitions, 2705 flow [2022-11-18 19:33:22,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 19:33:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 19:33:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5581 transitions. [2022-11-18 19:33:22,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5862394957983194 [2022-11-18 19:33:22,746 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5581 transitions. [2022-11-18 19:33:22,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5581 transitions. [2022-11-18 19:33:22,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:22,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5581 transitions. [2022-11-18 19:33:22,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 164.14705882352942) internal successors, (5581), 34 states have internal predecessors, (5581), 0 states have call successors, (0), 0 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 19:33:22,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 280.0) internal successors, (9800), 35 states have internal predecessors, (9800), 0 states have call successors, (0), 0 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 19:33:22,766 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 280.0) internal successors, (9800), 35 states have internal predecessors, (9800), 0 states have call successors, (0), 0 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 19:33:22,766 INFO L175 Difference]: Start difference. First operand has 399 places, 350 transitions, 2089 flow. Second operand 34 states and 5581 transitions. [2022-11-18 19:33:22,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 395 transitions, 2705 flow [2022-11-18 19:33:22,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 395 transitions, 2537 flow, removed 9 selfloop flow, removed 29 redundant places. [2022-11-18 19:33:22,799 INFO L231 Difference]: Finished difference. Result has 406 places, 350 transitions, 2148 flow [2022-11-18 19:33:22,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1882, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2148, PETRI_PLACES=406, PETRI_TRANSITIONS=350} [2022-11-18 19:33:22,800 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 146 predicate places. [2022-11-18 19:33:22,800 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 350 transitions, 2148 flow [2022-11-18 19:33:22,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 161.61764705882354) internal successors, (5495), 34 states have internal predecessors, (5495), 0 states have call successors, (0), 0 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 19:33:22,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:22,802 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, 1, 1, 1, 1] [2022-11-18 19:33:22,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:33:22,802 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 19:33:22,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:22,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1940765463, now seen corresponding path program 1 times [2022-11-18 19:33:22,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:22,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127840526] [2022-11-18 19:33:22,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:22,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat