./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN --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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- 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-6b4ec56 [2022-11-20 12:00:35,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:00:35,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:00:35,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:00:35,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:00:35,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:00:35,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:00:35,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:00:35,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:00:35,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:00:35,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:00:35,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:00:35,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:00:35,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:00:35,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:00:35,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:00:35,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:00:35,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:00:35,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:00:35,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:00:35,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:00:35,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:00:35,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:00:35,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:00:35,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:00:35,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:00:35,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:00:35,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:00:35,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:00:35,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:00:35,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:00:35,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:00:35,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:00:35,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:00:35,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:00:35,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:00:35,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:00:35,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:00:35,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:00:35,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:00:35,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:00:35,192 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:00:35,231 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:00:35,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:00:35,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:00:35,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:00:35,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:00:35,234 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:00:35,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:00:35,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:00:35,235 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:00:35,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:00:35,237 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:00:35,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:00:35,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:00:35,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:00:35,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:00:35,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:00:35,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:00:35,239 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:00:35,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:00:35,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:00:35,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:00:35,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:00:35,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:00:35,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:00:35,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:00:35,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:00:35,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:00:35,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:00:35,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:00:35,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:00:35,244 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:00:35,244 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:00:35,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:00:35,245 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_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2022-11-20 12:00:35,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:00:35,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:00:35,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:00:35,590 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:00:35,590 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:00:35,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/queue_longest.i [2022-11-20 12:00:38,748 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:00:39,084 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:00:39,085 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/sv-benchmarks/c/pthread/queue_longest.i [2022-11-20 12:00:39,101 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN/data/dfbb050d0/46e14e4ebbbe406c9602fffb83ecd0dc/FLAGade0a0e31 [2022-11-20 12:00:39,122 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN/data/dfbb050d0/46e14e4ebbbe406c9602fffb83ecd0dc [2022-11-20 12:00:39,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:00:39,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:00:39,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:00:39,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:00:39,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:00:39,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:00:39" (1/1) ... [2022-11-20 12:00:39,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311c392c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:39, skipping insertion in model container [2022-11-20 12:00:39,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:00:39" (1/1) ... [2022-11-20 12:00:39,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:00:39,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:00:39,873 WARN L237 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_1fb87738-7a1c-4940-aece-2bb6ccd2af88/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-20 12:00:39,884 WARN L237 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_1fb87738-7a1c-4940-aece-2bb6ccd2af88/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-20 12:00:39,891 WARN L237 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_1fb87738-7a1c-4940-aece-2bb6ccd2af88/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-20 12:00:39,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:00:39,917 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:00:39,988 WARN L237 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_1fb87738-7a1c-4940-aece-2bb6ccd2af88/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-20 12:00:39,990 WARN L237 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_1fb87738-7a1c-4940-aece-2bb6ccd2af88/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-20 12:00:39,994 WARN L237 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_1fb87738-7a1c-4940-aece-2bb6ccd2af88/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-20 12:00:40,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:00:40,079 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:00:40,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:40 WrapperNode [2022-11-20 12:00:40,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:00:40,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:00:40,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:00:40,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:00:40,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:40" (1/1) ... [2022-11-20 12:00:40,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:40" (1/1) ... [2022-11-20 12:00:40,175 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 241 [2022-11-20 12:00:40,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:00:40,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:00:40,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:00:40,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:00:40,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:40" (1/1) ... [2022-11-20 12:00:40,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:40" (1/1) ... [2022-11-20 12:00:40,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:40" (1/1) ... [2022-11-20 12:00:40,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:40" (1/1) ... [2022-11-20 12:00:40,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:40" (1/1) ... [2022-11-20 12:00:40,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:40" (1/1) ... [2022-11-20 12:00:40,230 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:40" (1/1) ... [2022-11-20 12:00:40,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:40" (1/1) ... [2022-11-20 12:00:40,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:00:40,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:00:40,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:00:40,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:00:40,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:40" (1/1) ... [2022-11-20 12:00:40,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:00:40,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:00:40,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:00:40,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb87738-7a1c-4940-aece-2bb6ccd2af88/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:00:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 12:00:40,339 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 12:00:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 12:00:40,339 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 12:00:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:00:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:00:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:00:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:00:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:00:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:00:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:00:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:00:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:00:40,342 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:00:40,509 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:00:40,511 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:00:41,090 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:00:41,102 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:00:41,102 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 12:00:41,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:00:41 BoogieIcfgContainer [2022-11-20 12:00:41,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:00:41,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:00:41,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:00:41,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:00:41,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:00:39" (1/3) ... [2022-11-20 12:00:41,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36374803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:00:41, skipping insertion in model container [2022-11-20 12:00:41,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:00:40" (2/3) ... [2022-11-20 12:00:41,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36374803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:00:41, skipping insertion in model container [2022-11-20 12:00:41,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:00:41" (3/3) ... [2022-11-20 12:00:41,124 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2022-11-20 12:00:41,136 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:00:41,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:00:41,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 12:00:41,148 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:00:41,324 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 12:00:41,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 272 transitions, 560 flow [2022-11-20 12:00:41,564 INFO L130 PetriNetUnfolder]: 15/270 cut-off events. [2022-11-20 12:00:41,564 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 12:00:41,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 270 events. 15/270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 361 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-11-20 12:00:41,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 272 transitions, 560 flow [2022-11-20 12:00:41,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 260 transitions, 529 flow [2022-11-20 12:00:41,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:00:41,607 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;@30570dd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:00:41,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 12:00:41,622 INFO L130 PetriNetUnfolder]: 1/63 cut-off events. [2022-11-20 12:00:41,622 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:00:41,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:41,623 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:41,624 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)] === [2022-11-20 12:00:41,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:41,630 INFO L85 PathProgramCache]: Analyzing trace with hash -244896479, now seen corresponding path program 1 times [2022-11-20 12:00:41,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:41,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016259611] [2022-11-20 12:00:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:41,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:41,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:41,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016259611] [2022-11-20 12:00:41,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016259611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:41,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:41,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:00:41,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329055422] [2022-11-20 12:00:41,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:41,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:00:41,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:42,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:00:42,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:00:42,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 272 [2022-11-20 12:00:42,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 260 transitions, 529 flow. Second operand has 2 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:42,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:42,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 272 [2022-11-20 12:00:42,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:42,219 INFO L130 PetriNetUnfolder]: 10/249 cut-off events. [2022-11-20 12:00:42,219 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-20 12:00:42,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 249 events. 10/249 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 280 event pairs, 0 based on Foata normal form. 7/244 useless extension candidates. Maximal degree in co-relation 189. Up to 4 conditions per place. [2022-11-20 12:00:42,224 INFO L137 encePairwiseOnDemand]: 267/272 looper letters, 3 selfloop transitions, 0 changer transitions 0/249 dead transitions. [2022-11-20 12:00:42,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 249 transitions, 513 flow [2022-11-20 12:00:42,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:00:42,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:00:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 526 transitions. [2022-11-20 12:00:42,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9669117647058824 [2022-11-20 12:00:42,247 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 526 transitions. [2022-11-20 12:00:42,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 526 transitions. [2022-11-20 12:00:42,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:42,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 526 transitions. [2022-11-20 12:00:42,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:42,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:42,263 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:42,265 INFO L175 Difference]: Start difference. First operand has 252 places, 260 transitions, 529 flow. Second operand 2 states and 526 transitions. [2022-11-20 12:00:42,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 249 transitions, 513 flow [2022-11-20 12:00:42,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 249 transitions, 508 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:00:42,281 INFO L231 Difference]: Finished difference. Result has 244 places, 249 transitions, 502 flow [2022-11-20 12:00:42,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=502, PETRI_PLACES=244, PETRI_TRANSITIONS=249} [2022-11-20 12:00:42,288 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, -8 predicate places. [2022-11-20 12:00:42,288 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 249 transitions, 502 flow [2022-11-20 12:00:42,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:42,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:42,289 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:42,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:00:42,290 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)] === [2022-11-20 12:00:42,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:42,291 INFO L85 PathProgramCache]: Analyzing trace with hash -134729215, now seen corresponding path program 1 times [2022-11-20 12:00:42,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:42,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537917398] [2022-11-20 12:00:42,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:42,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:43,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:43,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537917398] [2022-11-20 12:00:43,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537917398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:43,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:43,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:00:43,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572780689] [2022-11-20 12:00:43,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:43,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:00:43,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:00:43,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:00:43,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 272 [2022-11-20 12:00:43,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 249 transitions, 502 flow. Second operand has 12 states, 12 states have (on average 197.75) internal successors, (2373), 12 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:43,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:43,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 272 [2022-11-20 12:00:43,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:45,187 INFO L130 PetriNetUnfolder]: 1003/4115 cut-off events. [2022-11-20 12:00:45,188 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-20 12:00:45,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5626 conditions, 4115 events. 1003/4115 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 33945 event pairs, 789 based on Foata normal form. 0/3829 useless extension candidates. Maximal degree in co-relation 5623. Up to 1435 conditions per place. [2022-11-20 12:00:45,221 INFO L137 encePairwiseOnDemand]: 259/272 looper letters, 52 selfloop transitions, 12 changer transitions 0/245 dead transitions. [2022-11-20 12:00:45,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 245 transitions, 622 flow [2022-11-20 12:00:45,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:00:45,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 12:00:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2600 transitions. [2022-11-20 12:00:45,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2022-11-20 12:00:45,235 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2600 transitions. [2022-11-20 12:00:45,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2600 transitions. [2022-11-20 12:00:45,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:45,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2600 transitions. [2022-11-20 12:00:45,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 200.0) internal successors, (2600), 13 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,258 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,258 INFO L175 Difference]: Start difference. First operand has 244 places, 249 transitions, 502 flow. Second operand 13 states and 2600 transitions. [2022-11-20 12:00:45,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 245 transitions, 622 flow [2022-11-20 12:00:45,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 245 transitions, 622 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:00:45,271 INFO L231 Difference]: Finished difference. Result has 253 places, 245 transitions, 518 flow [2022-11-20 12:00:45,272 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=518, PETRI_PLACES=253, PETRI_TRANSITIONS=245} [2022-11-20 12:00:45,272 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 1 predicate places. [2022-11-20 12:00:45,273 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 245 transitions, 518 flow [2022-11-20 12:00:45,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 197.75) internal successors, (2373), 12 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:45,275 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:45,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:00:45,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:00:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:45,277 INFO L85 PathProgramCache]: Analyzing trace with hash -709610595, now seen corresponding path program 1 times [2022-11-20 12:00:45,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:45,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486078095] [2022-11-20 12:00:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:45,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:45,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:45,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486078095] [2022-11-20 12:00:45,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486078095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:45,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:45,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:00:45,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47738055] [2022-11-20 12:00:45,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:45,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:00:45,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:45,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:00:45,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:00:45,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 272 [2022-11-20 12:00:45,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 245 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:45,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 272 [2022-11-20 12:00:45,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:45,527 INFO L130 PetriNetUnfolder]: 26/430 cut-off events. [2022-11-20 12:00:45,528 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 12:00:45,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 430 events. 26/430 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1082 event pairs, 2 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 493. Up to 13 conditions per place. [2022-11-20 12:00:45,531 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 9 selfloop transitions, 5 changer transitions 0/245 dead transitions. [2022-11-20 12:00:45,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 245 transitions, 550 flow [2022-11-20 12:00:45,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:00:45,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:00:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1007 transitions. [2022-11-20 12:00:45,534 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9255514705882353 [2022-11-20 12:00:45,535 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1007 transitions. [2022-11-20 12:00:45,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1007 transitions. [2022-11-20 12:00:45,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:45,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1007 transitions. [2022-11-20 12:00:45,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 272.0) internal successors, (1360), 5 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,542 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 272.0) internal successors, (1360), 5 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,542 INFO L175 Difference]: Start difference. First operand has 253 places, 245 transitions, 518 flow. Second operand 4 states and 1007 transitions. [2022-11-20 12:00:45,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 245 transitions, 550 flow [2022-11-20 12:00:45,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 245 transitions, 527 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 12:00:45,548 INFO L231 Difference]: Finished difference. Result has 244 places, 243 transitions, 501 flow [2022-11-20 12:00:45,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=501, PETRI_PLACES=244, PETRI_TRANSITIONS=243} [2022-11-20 12:00:45,549 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, -8 predicate places. [2022-11-20 12:00:45,550 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 243 transitions, 501 flow [2022-11-20 12:00:45,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,551 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:45,551 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:45,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:00:45,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:00:45,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:45,552 INFO L85 PathProgramCache]: Analyzing trace with hash 105661887, now seen corresponding path program 1 times [2022-11-20 12:00:45,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:45,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310448919] [2022-11-20 12:00:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:45,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:45,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:45,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310448919] [2022-11-20 12:00:45,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310448919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:45,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:45,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:00:45,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180709714] [2022-11-20 12:00:45,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:45,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:00:45,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:45,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:00:45,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:00:45,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 272 [2022-11-20 12:00:45,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 243 transitions, 501 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:45,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 272 [2022-11-20 12:00:45,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:45,901 INFO L130 PetriNetUnfolder]: 33/525 cut-off events. [2022-11-20 12:00:45,901 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-11-20 12:00:45,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 525 events. 33/525 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1261 event pairs, 2 based on Foata normal form. 0/491 useless extension candidates. Maximal degree in co-relation 580. Up to 23 conditions per place. [2022-11-20 12:00:45,905 INFO L137 encePairwiseOnDemand]: 268/272 looper letters, 10 selfloop transitions, 3 changer transitions 0/247 dead transitions. [2022-11-20 12:00:45,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 247 transitions, 538 flow [2022-11-20 12:00:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:00:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:00:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2022-11-20 12:00:45,908 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9473039215686274 [2022-11-20 12:00:45,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2022-11-20 12:00:45,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2022-11-20 12:00:45,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:45,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2022-11-20 12:00:45,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,918 INFO L175 Difference]: Start difference. First operand has 244 places, 243 transitions, 501 flow. Second operand 3 states and 773 transitions. [2022-11-20 12:00:45,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 247 transitions, 538 flow [2022-11-20 12:00:45,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 247 transitions, 528 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:00:45,926 INFO L231 Difference]: Finished difference. Result has 244 places, 244 transitions, 506 flow [2022-11-20 12:00:45,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=244, PETRI_TRANSITIONS=244} [2022-11-20 12:00:45,928 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, -8 predicate places. [2022-11-20 12:00:45,928 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 244 transitions, 506 flow [2022-11-20 12:00:45,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:45,929 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:45,929 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:45,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:00:45,929 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)] === [2022-11-20 12:00:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1557842589, now seen corresponding path program 1 times [2022-11-20 12:00:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:45,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543876483] [2022-11-20 12:00:45,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:45,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:46,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:46,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543876483] [2022-11-20 12:00:46,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543876483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:46,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:46,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:00:46,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441987801] [2022-11-20 12:00:46,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:46,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:00:46,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:46,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:00:46,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:00:46,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 272 [2022-11-20 12:00:46,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 244 transitions, 506 flow. Second operand has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:46,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:46,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 272 [2022-11-20 12:00:46,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:46,265 INFO L130 PetriNetUnfolder]: 51/834 cut-off events. [2022-11-20 12:00:46,265 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-20 12:00:46,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 834 events. 51/834 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3006 event pairs, 7 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 938. Up to 27 conditions per place. [2022-11-20 12:00:46,272 INFO L137 encePairwiseOnDemand]: 267/272 looper letters, 15 selfloop transitions, 5 changer transitions 0/252 dead transitions. [2022-11-20 12:00:46,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 252 transitions, 569 flow [2022-11-20 12:00:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:00:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:00:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1271 transitions. [2022-11-20 12:00:46,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9345588235294118 [2022-11-20 12:00:46,276 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1271 transitions. [2022-11-20 12:00:46,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1271 transitions. [2022-11-20 12:00:46,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:46,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1271 transitions. [2022-11-20 12:00:46,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 254.2) internal successors, (1271), 5 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:46,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:46,286 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:46,286 INFO L175 Difference]: Start difference. First operand has 244 places, 244 transitions, 506 flow. Second operand 5 states and 1271 transitions. [2022-11-20 12:00:46,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 252 transitions, 569 flow [2022-11-20 12:00:46,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:00:46,292 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 533 flow [2022-11-20 12:00:46,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=533, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2022-11-20 12:00:46,295 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, -2 predicate places. [2022-11-20 12:00:46,296 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 533 flow [2022-11-20 12:00:46,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:46,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:46,297 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:46,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:00:46,297 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)] === [2022-11-20 12:00:46,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:46,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2105464912, now seen corresponding path program 1 times [2022-11-20 12:00:46,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:46,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621692393] [2022-11-20 12:00:46,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:46,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:48,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:48,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621692393] [2022-11-20 12:00:48,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621692393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:48,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:48,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 12:00:48,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294479715] [2022-11-20 12:00:48,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:48,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:00:48,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:00:48,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:00:48,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 272 [2022-11-20 12:00:48,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 533 flow. Second operand has 17 states, 17 states have (on average 185.41176470588235) internal successors, (3152), 17 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:48,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:48,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 272 [2022-11-20 12:00:48,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:51,054 INFO L130 PetriNetUnfolder]: 1599/6667 cut-off events. [2022-11-20 12:00:51,054 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-20 12:00:51,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9621 conditions, 6667 events. 1599/6667 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 58236 event pairs, 1290 based on Foata normal form. 0/6316 useless extension candidates. Maximal degree in co-relation 9614. Up to 2556 conditions per place. [2022-11-20 12:00:51,105 INFO L137 encePairwiseOnDemand]: 256/272 looper letters, 79 selfloop transitions, 20 changer transitions 0/269 dead transitions. [2022-11-20 12:00:51,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 269 transitions, 777 flow [2022-11-20 12:00:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:00:51,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:00:51,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2846 transitions. [2022-11-20 12:00:51,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6975490196078431 [2022-11-20 12:00:51,114 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2846 transitions. [2022-11-20 12:00:51,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2846 transitions. [2022-11-20 12:00:51,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:51,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2846 transitions. [2022-11-20 12:00:51,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 189.73333333333332) internal successors, (2846), 15 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:51,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 272.0) internal successors, (4352), 16 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:51,134 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 272.0) internal successors, (4352), 16 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:51,135 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 533 flow. Second operand 15 states and 2846 transitions. [2022-11-20 12:00:51,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 269 transitions, 777 flow [2022-11-20 12:00:51,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 269 transitions, 777 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:00:51,145 INFO L231 Difference]: Finished difference. Result has 270 places, 260 transitions, 640 flow [2022-11-20 12:00:51,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=640, PETRI_PLACES=270, PETRI_TRANSITIONS=260} [2022-11-20 12:00:51,148 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 18 predicate places. [2022-11-20 12:00:51,149 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 260 transitions, 640 flow [2022-11-20 12:00:51,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 185.41176470588235) internal successors, (3152), 17 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:51,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:51,151 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:51,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:00:51,151 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)] === [2022-11-20 12:00:51,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:51,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1705964395, now seen corresponding path program 1 times [2022-11-20 12:00:51,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:51,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329552521] [2022-11-20 12:00:51,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:51,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:55,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:55,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329552521] [2022-11-20 12:00:55,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329552521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:55,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:55,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-20 12:00:55,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412352183] [2022-11-20 12:00:55,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:55,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 12:00:55,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:55,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 12:00:55,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-11-20 12:00:55,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 272 [2022-11-20 12:00:55,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 260 transitions, 640 flow. Second operand has 27 states, 27 states have (on average 171.92592592592592) internal successors, (4642), 27 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:55,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:55,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 272 [2022-11-20 12:00:55,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:00,517 INFO L130 PetriNetUnfolder]: 1457/6027 cut-off events. [2022-11-20 12:01:00,518 INFO L131 PetriNetUnfolder]: For 117/120 co-relation queries the response was YES. [2022-11-20 12:01:00,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8864 conditions, 6027 events. 1457/6027 cut-off events. For 117/120 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 51219 event pairs, 1160 based on Foata normal form. 2/5752 useless extension candidates. Maximal degree in co-relation 8850. Up to 2311 conditions per place. [2022-11-20 12:01:00,565 INFO L137 encePairwiseOnDemand]: 241/272 looper letters, 88 selfloop transitions, 45 changer transitions 0/295 dead transitions. [2022-11-20 12:01:00,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 295 transitions, 1000 flow [2022-11-20 12:01:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:01:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-20 12:01:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4724 transitions. [2022-11-20 12:01:00,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6432461873638344 [2022-11-20 12:01:00,577 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4724 transitions. [2022-11-20 12:01:00,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4724 transitions. [2022-11-20 12:01:00,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:00,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4724 transitions. [2022-11-20 12:01:00,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 174.96296296296296) internal successors, (4724), 27 states have internal predecessors, (4724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:00,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 272.0) internal successors, (7616), 28 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:00,609 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 272.0) internal successors, (7616), 28 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:00,609 INFO L175 Difference]: Start difference. First operand has 270 places, 260 transitions, 640 flow. Second operand 27 states and 4724 transitions. [2022-11-20 12:01:00,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 295 transitions, 1000 flow [2022-11-20 12:01:00,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 295 transitions, 987 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:01:00,617 INFO L231 Difference]: Finished difference. Result has 301 places, 282 transitions, 866 flow [2022-11-20 12:01:00,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=866, PETRI_PLACES=301, PETRI_TRANSITIONS=282} [2022-11-20 12:01:00,618 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 49 predicate places. [2022-11-20 12:01:00,619 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 282 transitions, 866 flow [2022-11-20 12:01:00,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 171.92592592592592) internal successors, (4642), 27 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:00,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:00,621 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:00,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:01:00,622 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)] === [2022-11-20 12:01:00,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash 889495684, now seen corresponding path program 1 times [2022-11-20 12:01:00,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:00,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103190762] [2022-11-20 12:01:00,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:00,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:02,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:02,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103190762] [2022-11-20 12:01:02,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103190762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:02,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:02,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 12:01:02,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921904739] [2022-11-20 12:01:02,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:02,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:01:02,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:02,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:01:02,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:01:02,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 272 [2022-11-20 12:01:02,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 282 transitions, 866 flow. Second operand has 18 states, 18 states have (on average 176.72222222222223) internal successors, (3181), 18 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:02,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:02,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 272 [2022-11-20 12:01:02,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:05,703 INFO L130 PetriNetUnfolder]: 1555/6501 cut-off events. [2022-11-20 12:01:05,704 INFO L131 PetriNetUnfolder]: For 421/425 co-relation queries the response was YES. [2022-11-20 12:01:05,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9784 conditions, 6501 events. 1555/6501 cut-off events. For 421/425 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 57302 event pairs, 723 based on Foata normal form. 3/6169 useless extension candidates. Maximal degree in co-relation 9758. Up to 2403 conditions per place. [2022-11-20 12:01:05,768 INFO L137 encePairwiseOnDemand]: 255/272 looper letters, 96 selfloop transitions, 24 changer transitions 0/289 dead transitions. [2022-11-20 12:01:05,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 289 transitions, 1126 flow [2022-11-20 12:01:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:01:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 12:01:05,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2707 transitions. [2022-11-20 12:01:05,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6634803921568627 [2022-11-20 12:01:05,925 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2707 transitions. [2022-11-20 12:01:05,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2707 transitions. [2022-11-20 12:01:05,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:05,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2707 transitions. [2022-11-20 12:01:05,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 180.46666666666667) internal successors, (2707), 15 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:05,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 272.0) internal successors, (4352), 16 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:05,942 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 272.0) internal successors, (4352), 16 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:05,942 INFO L175 Difference]: Start difference. First operand has 301 places, 282 transitions, 866 flow. Second operand 15 states and 2707 transitions. [2022-11-20 12:01:05,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 289 transitions, 1126 flow [2022-11-20 12:01:06,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 289 transitions, 1078 flow, removed 8 selfloop flow, removed 14 redundant places. [2022-11-20 12:01:06,063 INFO L231 Difference]: Finished difference. Result has 299 places, 279 transitions, 856 flow [2022-11-20 12:01:06,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=856, PETRI_PLACES=299, PETRI_TRANSITIONS=279} [2022-11-20 12:01:06,064 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 47 predicate places. [2022-11-20 12:01:06,065 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 279 transitions, 856 flow [2022-11-20 12:01:06,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 176.72222222222223) internal successors, (3181), 18 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:06,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:06,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:06,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:01:06,066 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)] === [2022-11-20 12:01:06,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:06,067 INFO L85 PathProgramCache]: Analyzing trace with hash -983440833, now seen corresponding path program 1 times [2022-11-20 12:01:06,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:06,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187045755] [2022-11-20 12:01:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:06,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:10,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:10,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187045755] [2022-11-20 12:01:10,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187045755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:10,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:10,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-20 12:01:10,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411525710] [2022-11-20 12:01:10,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:10,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:01:10,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:10,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:01:10,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:01:10,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 272 [2022-11-20 12:01:10,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 279 transitions, 856 flow. Second operand has 28 states, 28 states have (on average 163.14285714285714) internal successors, (4568), 28 states have internal predecessors, (4568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:10,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:10,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 272 [2022-11-20 12:01:10,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:14,846 INFO L130 PetriNetUnfolder]: 782/3181 cut-off events. [2022-11-20 12:01:14,847 INFO L131 PetriNetUnfolder]: For 336/339 co-relation queries the response was YES. [2022-11-20 12:01:14,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5052 conditions, 3181 events. 782/3181 cut-off events. For 336/339 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 22072 event pairs, 320 based on Foata normal form. 3/3026 useless extension candidates. Maximal degree in co-relation 5028. Up to 1081 conditions per place. [2022-11-20 12:01:14,870 INFO L137 encePairwiseOnDemand]: 244/272 looper letters, 114 selfloop transitions, 42 changer transitions 0/301 dead transitions. [2022-11-20 12:01:14,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 301 transitions, 1229 flow [2022-11-20 12:01:14,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 12:01:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-20 12:01:14,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4323 transitions. [2022-11-20 12:01:14,879 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6112839366515838 [2022-11-20 12:01:14,879 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4323 transitions. [2022-11-20 12:01:14,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4323 transitions. [2022-11-20 12:01:14,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:14,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4323 transitions. [2022-11-20 12:01:14,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 166.26923076923077) internal successors, (4323), 26 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:14,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 272.0) internal successors, (7344), 27 states have internal predecessors, (7344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:14,904 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 272.0) internal successors, (7344), 27 states have internal predecessors, (7344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:14,905 INFO L175 Difference]: Start difference. First operand has 299 places, 279 transitions, 856 flow. Second operand 26 states and 4323 transitions. [2022-11-20 12:01:14,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 301 transitions, 1229 flow [2022-11-20 12:01:14,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 301 transitions, 1163 flow, removed 1 selfloop flow, removed 21 redundant places. [2022-11-20 12:01:14,913 INFO L231 Difference]: Finished difference. Result has 296 places, 269 transitions, 852 flow [2022-11-20 12:01:14,914 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=852, PETRI_PLACES=296, PETRI_TRANSITIONS=269} [2022-11-20 12:01:14,915 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 44 predicate places. [2022-11-20 12:01:14,915 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 269 transitions, 852 flow [2022-11-20 12:01:14,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 163.14285714285714) internal successors, (4568), 28 states have internal predecessors, (4568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:14,916 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:14,917 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:14,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:01:14,917 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:01:14,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:14,918 INFO L85 PathProgramCache]: Analyzing trace with hash -868849620, now seen corresponding path program 1 times [2022-11-20 12:01:14,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:14,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402309297] [2022-11-20 12:01:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:14,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:15,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:15,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402309297] [2022-11-20 12:01:15,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402309297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:15,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:15,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:01:15,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968636359] [2022-11-20 12:01:15,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:15,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:01:15,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:15,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:01:15,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:01:15,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 272 [2022-11-20 12:01:15,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 269 transitions, 852 flow. Second operand has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:15,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:15,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 272 [2022-11-20 12:01:15,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:15,264 INFO L130 PetriNetUnfolder]: 60/879 cut-off events. [2022-11-20 12:01:15,264 INFO L131 PetriNetUnfolder]: For 132/133 co-relation queries the response was YES. [2022-11-20 12:01:15,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 879 events. 60/879 cut-off events. For 132/133 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3380 event pairs, 9 based on Foata normal form. 10/855 useless extension candidates. Maximal degree in co-relation 1232. Up to 39 conditions per place. [2022-11-20 12:01:15,273 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 12 selfloop transitions, 6 changer transitions 0/271 dead transitions. [2022-11-20 12:01:15,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 271 transitions, 895 flow [2022-11-20 12:01:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:01:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:01:15,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2022-11-20 12:01:15,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9301470588235294 [2022-11-20 12:01:15,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2022-11-20 12:01:15,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2022-11-20 12:01:15,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:15,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2022-11-20 12:01:15,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:15,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:15,281 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:15,281 INFO L175 Difference]: Start difference. First operand has 296 places, 269 transitions, 852 flow. Second operand 3 states and 759 transitions. [2022-11-20 12:01:15,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 271 transitions, 895 flow [2022-11-20 12:01:15,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 271 transitions, 819 flow, removed 1 selfloop flow, removed 23 redundant places. [2022-11-20 12:01:15,289 INFO L231 Difference]: Finished difference. Result has 275 places, 269 transitions, 788 flow [2022-11-20 12:01:15,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=788, PETRI_PLACES=275, PETRI_TRANSITIONS=269} [2022-11-20 12:01:15,291 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 23 predicate places. [2022-11-20 12:01:15,291 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 269 transitions, 788 flow [2022-11-20 12:01:15,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:15,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:15,292 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:15,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:01:15,293 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:01:15,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:15,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1364545998, now seen corresponding path program 1 times [2022-11-20 12:01:15,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:15,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845980535] [2022-11-20 12:01:15,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:15,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:18,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:18,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845980535] [2022-11-20 12:01:18,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845980535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:18,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:18,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-20 12:01:18,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611336338] [2022-11-20 12:01:18,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:18,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 12:01:18,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:18,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 12:01:18,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2022-11-20 12:01:18,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 272 [2022-11-20 12:01:18,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 269 transitions, 788 flow. Second operand has 29 states, 29 states have (on average 167.68965517241378) internal successors, (4863), 29 states have internal predecessors, (4863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:18,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:18,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 272 [2022-11-20 12:01:18,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:21,640 INFO L130 PetriNetUnfolder]: 327/1557 cut-off events. [2022-11-20 12:01:21,640 INFO L131 PetriNetUnfolder]: For 268/272 co-relation queries the response was YES. [2022-11-20 12:01:21,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2880 conditions, 1557 events. 327/1557 cut-off events. For 268/272 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7947 event pairs, 29 based on Foata normal form. 0/1504 useless extension candidates. Maximal degree in co-relation 2860. Up to 359 conditions per place. [2022-11-20 12:01:21,650 INFO L137 encePairwiseOnDemand]: 241/272 looper letters, 136 selfloop transitions, 44 changer transitions 0/325 dead transitions. [2022-11-20 12:01:21,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 325 transitions, 1325 flow [2022-11-20 12:01:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 12:01:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-20 12:01:21,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4778 transitions. [2022-11-20 12:01:21,660 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6273634453781513 [2022-11-20 12:01:21,660 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4778 transitions. [2022-11-20 12:01:21,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4778 transitions. [2022-11-20 12:01:21,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:21,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4778 transitions. [2022-11-20 12:01:21,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 170.64285714285714) internal successors, (4778), 28 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:21,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 272.0) internal successors, (7888), 29 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:21,688 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 272.0) internal successors, (7888), 29 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:21,688 INFO L175 Difference]: Start difference. First operand has 275 places, 269 transitions, 788 flow. Second operand 28 states and 4778 transitions. [2022-11-20 12:01:21,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 325 transitions, 1325 flow [2022-11-20 12:01:21,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 325 transitions, 1319 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:01:21,697 INFO L231 Difference]: Finished difference. Result has 306 places, 276 transitions, 915 flow [2022-11-20 12:01:21,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=915, PETRI_PLACES=306, PETRI_TRANSITIONS=276} [2022-11-20 12:01:21,698 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 54 predicate places. [2022-11-20 12:01:21,699 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 276 transitions, 915 flow [2022-11-20 12:01:21,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 167.68965517241378) internal successors, (4863), 29 states have internal predecessors, (4863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:21,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:21,701 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:21,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:01:21,701 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:01:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1298194817, now seen corresponding path program 1 times [2022-11-20 12:01:21,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:21,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064963685] [2022-11-20 12:01:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:21,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:29,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:29,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064963685] [2022-11-20 12:01:29,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064963685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:29,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:29,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 12:01:29,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434059753] [2022-11-20 12:01:29,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:29,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 12:01:29,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:29,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 12:01:29,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 12:01:29,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 272 [2022-11-20 12:01:29,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 276 transitions, 915 flow. Second operand has 36 states, 36 states have (on average 154.5) internal successors, (5562), 36 states have internal predecessors, (5562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:29,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:01:29,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 272 [2022-11-20 12:01:29,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:01:35,561 INFO L130 PetriNetUnfolder]: 427/2033 cut-off events. [2022-11-20 12:01:35,561 INFO L131 PetriNetUnfolder]: For 546/550 co-relation queries the response was YES. [2022-11-20 12:01:35,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3878 conditions, 2033 events. 427/2033 cut-off events. For 546/550 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11181 event pairs, 37 based on Foata normal form. 0/1965 useless extension candidates. Maximal degree in co-relation 3852. Up to 376 conditions per place. [2022-11-20 12:01:35,573 INFO L137 encePairwiseOnDemand]: 231/272 looper letters, 175 selfloop transitions, 60 changer transitions 0/370 dead transitions. [2022-11-20 12:01:35,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 370 transitions, 1657 flow [2022-11-20 12:01:35,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 12:01:35,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-20 12:01:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5687 transitions. [2022-11-20 12:01:35,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5807802287581699 [2022-11-20 12:01:35,582 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5687 transitions. [2022-11-20 12:01:35,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5687 transitions. [2022-11-20 12:01:35,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:01:35,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5687 transitions. [2022-11-20 12:01:35,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 157.97222222222223) internal successors, (5687), 36 states have internal predecessors, (5687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:35,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 272.0) internal successors, (10064), 37 states have internal predecessors, (10064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:35,607 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 272.0) internal successors, (10064), 37 states have internal predecessors, (10064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:35,607 INFO L175 Difference]: Start difference. First operand has 306 places, 276 transitions, 915 flow. Second operand 36 states and 5687 transitions. [2022-11-20 12:01:35,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 370 transitions, 1657 flow [2022-11-20 12:01:35,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 370 transitions, 1585 flow, removed 0 selfloop flow, removed 21 redundant places. [2022-11-20 12:01:35,618 INFO L231 Difference]: Finished difference. Result has 327 places, 288 transitions, 1044 flow [2022-11-20 12:01:35,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1044, PETRI_PLACES=327, PETRI_TRANSITIONS=288} [2022-11-20 12:01:35,619 INFO L288 CegarLoopForPetriNet]: 252 programPoint places, 75 predicate places. [2022-11-20 12:01:35,619 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 288 transitions, 1044 flow [2022-11-20 12:01:35,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 154.5) internal successors, (5562), 36 states have internal predecessors, (5562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:35,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:01:35,621 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] [2022-11-20 12:01:35,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:01:35,622 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:01:35,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:35,622 INFO L85 PathProgramCache]: Analyzing trace with hash 396256198, now seen corresponding path program 1 times [2022-11-20 12:01:35,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:35,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689603719] [2022-11-20 12:01:35,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:35,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat