./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 2329fc70 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_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8 --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-2329fc7 [2022-12-13 18:06:51,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:06:51,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:06:51,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:06:51,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:06:51,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:06:51,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:06:51,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:06:51,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:06:51,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:06:51,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:06:51,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:06:51,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:06:51,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:06:51,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:06:51,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:06:51,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:06:51,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:06:51,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:06:51,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:06:51,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:06:51,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:06:51,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:06:51,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:06:51,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:06:51,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:06:51,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:06:51,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:06:51,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:06:51,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:06:51,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:06:51,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:06:51,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:06:51,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:06:51,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:06:51,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:06:51,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:06:51,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:06:51,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:06:51,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:06:51,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:06:51,195 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:06:51,228 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:06:51,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:06:51,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:06:51,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:06:51,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:06:51,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:06:51,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:06:51,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:06:51,230 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:06:51,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:06:51,230 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:06:51,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:06:51,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:06:51,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:06:51,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:06:51,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:06:51,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:06:51,232 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:06:51,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:06:51,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:06:51,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:06:51,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:06:51,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:06:51,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:06:51,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:06:51,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:06:51,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:06:51,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:06:51,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:06:51,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:06:51,234 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:06:51,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:06:51,234 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:06:51,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:06:51,234 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:06:51,235 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2022-12-13 18:06:51,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:06:51,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:06:51,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:06:51,436 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:06:51,436 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:06:51,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/queue_longest.i [2022-12-13 18:06:53,948 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:06:54,175 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:06:54,175 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/sv-benchmarks/c/pthread/queue_longest.i [2022-12-13 18:06:54,184 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8/data/2e131d935/ece4a59a1d314631af68c4758a0d1160/FLAG100e70efb [2022-12-13 18:06:54,520 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8/data/2e131d935/ece4a59a1d314631af68c4758a0d1160 [2022-12-13 18:06:54,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:06:54,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:06:54,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:06:54,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:06:54,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:06:54,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:06:54" (1/1) ... [2022-12-13 18:06:54,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669470d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54, skipping insertion in model container [2022-12-13 18:06:54,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:06:54" (1/1) ... [2022-12-13 18:06:54,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:06:54,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:06:54,912 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_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-12-13 18:06:54,917 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_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-12-13 18:06:54,919 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_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-12-13 18:06:54,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:06:54,930 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:06:54,958 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_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-12-13 18:06:54,959 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_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-12-13 18:06:54,961 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_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-12-13 18:06:54,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:06:54,993 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:06:54,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54 WrapperNode [2022-12-13 18:06:54,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:06:54,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:06:54,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:06:54,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:06:54,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54" (1/1) ... [2022-12-13 18:06:55,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54" (1/1) ... [2022-12-13 18:06:55,029 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 241 [2022-12-13 18:06:55,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:06:55,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:06:55,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:06:55,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:06:55,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54" (1/1) ... [2022-12-13 18:06:55,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54" (1/1) ... [2022-12-13 18:06:55,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54" (1/1) ... [2022-12-13 18:06:55,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54" (1/1) ... [2022-12-13 18:06:55,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54" (1/1) ... [2022-12-13 18:06:55,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54" (1/1) ... [2022-12-13 18:06:55,051 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54" (1/1) ... [2022-12-13 18:06:55,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54" (1/1) ... [2022-12-13 18:06:55,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:06:55,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:06:55,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:06:55,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:06:55,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54" (1/1) ... [2022-12-13 18:06:55,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:06:55,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:06:55,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:06:55,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac454fee-84bf-4ebb-8c50-2c65b812ac2b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:06:55,113 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 18:06:55,113 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 18:06:55,113 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 18:06:55,113 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 18:06:55,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:06:55,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:06:55,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:06:55,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:06:55,114 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 18:06:55,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:06:55,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:06:55,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:06:55,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:06:55,116 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 18:06:55,235 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:06:55,236 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:06:55,517 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:06:55,534 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:06:55,534 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 18:06:55,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:06:55 BoogieIcfgContainer [2022-12-13 18:06:55,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:06:55,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:06:55,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:06:55,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:06:55,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:06:54" (1/3) ... [2022-12-13 18:06:55,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f084398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:06:55, skipping insertion in model container [2022-12-13 18:06:55,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:54" (2/3) ... [2022-12-13 18:06:55,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f084398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:06:55, skipping insertion in model container [2022-12-13 18:06:55,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:06:55" (3/3) ... [2022-12-13 18:06:55,544 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2022-12-13 18:06:55,562 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:06:55,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:06:55,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-13 18:06:55,573 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:06:55,651 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 18:06:55,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 272 transitions, 560 flow [2022-12-13 18:06:55,748 INFO L130 PetriNetUnfolder]: 15/270 cut-off events. [2022-12-13 18:06:55,748 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:06:55,754 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 362 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. [2022-12-13 18:06:55,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 272 transitions, 560 flow [2022-12-13 18:06:55,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 260 transitions, 529 flow [2022-12-13 18:06:55,761 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:06:55,768 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 260 transitions, 529 flow [2022-12-13 18:06:55,770 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 260 transitions, 529 flow [2022-12-13 18:06:55,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 260 transitions, 529 flow [2022-12-13 18:06:55,803 INFO L130 PetriNetUnfolder]: 15/260 cut-off events. [2022-12-13 18:06:55,803 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:06:55,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 260 events. 15/260 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-12-13 18:06:55,809 INFO L119 LiptonReduction]: Number of co-enabled transitions 16892 [2022-12-13 18:07:02,328 INFO L134 LiptonReduction]: Checked pairs total: 36623 [2022-12-13 18:07:02,328 INFO L136 LiptonReduction]: Total number of compositions: 227 [2022-12-13 18:07:02,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:07:02,342 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;@6246d249, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:07:02,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 18:07:02,344 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 18:07:02,344 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:07:02,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:02,344 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:07:02,345 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)] === [2022-12-13 18:07:02,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:02,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1049, now seen corresponding path program 1 times [2022-12-13 18:07:02,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:02,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560219741] [2022-12-13 18:07:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:02,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:02,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:02,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560219741] [2022-12-13 18:07:02,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560219741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:02,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:02,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:07:02,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045763621] [2022-12-13 18:07:02,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:02,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:07:02,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:02,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:07:02,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:07:02,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 499 [2022-12-13 18:07:02,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 141 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) [2022-12-13 18:07:02,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:02,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 499 [2022-12-13 18:07:02,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:02,750 INFO L130 PetriNetUnfolder]: 1665/2832 cut-off events. [2022-12-13 18:07:02,750 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-12-13 18:07:02,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5499 conditions, 2832 events. 1665/2832 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 13335 event pairs, 1323 based on Foata normal form. 90/2478 useless extension candidates. Maximal degree in co-relation 5328. Up to 2593 conditions per place. [2022-12-13 18:07:02,761 INFO L137 encePairwiseOnDemand]: 496/499 looper letters, 54 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2022-12-13 18:07:02,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 243 flow [2022-12-13 18:07:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:07:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 18:07:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 575 transitions. [2022-12-13 18:07:02,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5761523046092184 [2022-12-13 18:07:02,774 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 575 transitions. [2022-12-13 18:07:02,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 575 transitions. [2022-12-13 18:07:02,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:02,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 575 transitions. [2022-12-13 18:07:02,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 287.5) internal successors, (575), 2 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:02,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:02,794 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:02,796 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 141 flow. Second operand 2 states and 575 transitions. [2022-12-13 18:07:02,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 243 flow [2022-12-13 18:07:02,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 18:07:02,803 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 130 flow [2022-12-13 18:07:02,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2022-12-13 18:07:02,809 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2022-12-13 18:07:02,809 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 130 flow [2022-12-13 18:07:02,810 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) [2022-12-13 18:07:02,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:02,810 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:02,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:07:02,811 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)] === [2022-12-13 18:07:02,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:02,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1283828037, now seen corresponding path program 1 times [2022-12-13 18:07:02,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:02,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623704591] [2022-12-13 18:07:02,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:02,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:03,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:03,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623704591] [2022-12-13 18:07:03,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623704591] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:03,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:03,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:07:03,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334241890] [2022-12-13 18:07:03,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:03,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:07:03,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:03,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:07:03,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:07:03,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 499 [2022-12-13 18:07:03,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:03,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:03,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 499 [2022-12-13 18:07:03,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:03,362 INFO L130 PetriNetUnfolder]: 1629/2796 cut-off events. [2022-12-13 18:07:03,362 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 18:07:03,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5408 conditions, 2796 events. 1629/2796 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13348 event pairs, 1272 based on Foata normal form. 0/2388 useless extension candidates. Maximal degree in co-relation 5405. Up to 2428 conditions per place. [2022-12-13 18:07:03,376 INFO L137 encePairwiseOnDemand]: 495/499 looper letters, 71 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2022-12-13 18:07:03,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 320 flow [2022-12-13 18:07:03,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:07:03,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:07:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 837 transitions. [2022-12-13 18:07:03,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5591182364729459 [2022-12-13 18:07:03,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 837 transitions. [2022-12-13 18:07:03,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 837 transitions. [2022-12-13 18:07:03,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:03,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 837 transitions. [2022-12-13 18:07:03,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:03,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:03,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:03,388 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 130 flow. Second operand 3 states and 837 transitions. [2022-12-13 18:07:03,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 320 flow [2022-12-13 18:07:03,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:07:03,390 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 134 flow [2022-12-13 18:07:03,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2022-12-13 18:07:03,391 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2022-12-13 18:07:03,391 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 134 flow [2022-12-13 18:07:03,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:03,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:03,392 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:03,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:07:03,392 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)] === [2022-12-13 18:07:03,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:03,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1102047211, now seen corresponding path program 1 times [2022-12-13 18:07:03,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:03,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514856286] [2022-12-13 18:07:03,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:03,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:03,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:03,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514856286] [2022-12-13 18:07:03,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514856286] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:03,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:03,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:07:03,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491198520] [2022-12-13 18:07:03,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:03,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:07:03,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:03,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:07:03,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:07:04,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 499 [2022-12-13 18:07:04,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:04,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:04,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 499 [2022-12-13 18:07:04,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:04,626 INFO L130 PetriNetUnfolder]: 2078/3507 cut-off events. [2022-12-13 18:07:04,626 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-12-13 18:07:04,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7036 conditions, 3507 events. 2078/3507 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 17200 event pairs, 1124 based on Foata normal form. 0/3039 useless extension candidates. Maximal degree in co-relation 7032. Up to 2746 conditions per place. [2022-12-13 18:07:04,637 INFO L137 encePairwiseOnDemand]: 482/499 looper letters, 72 selfloop transitions, 20 changer transitions 0/99 dead transitions. [2022-12-13 18:07:04,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 99 transitions, 398 flow [2022-12-13 18:07:04,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:07:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:07:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1738 transitions. [2022-12-13 18:07:04,640 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4975665616948182 [2022-12-13 18:07:04,640 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1738 transitions. [2022-12-13 18:07:04,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1738 transitions. [2022-12-13 18:07:04,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:04,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1738 transitions. [2022-12-13 18:07:04,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 248.28571428571428) internal successors, (1738), 7 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:04,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:04,648 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 499.0) internal successors, (3992), 8 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:04,648 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 134 flow. Second operand 7 states and 1738 transitions. [2022-12-13 18:07:04,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 99 transitions, 398 flow [2022-12-13 18:07:04,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 99 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:07:04,651 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 266 flow [2022-12-13 18:07:04,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=266, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2022-12-13 18:07:04,652 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2022-12-13 18:07:04,652 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 266 flow [2022-12-13 18:07:04,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:04,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:04,653 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:04,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:07:04,653 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 18:07:04,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:04,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1794055742, now seen corresponding path program 1 times [2022-12-13 18:07:04,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:04,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238888187] [2022-12-13 18:07:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:04,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:05,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:05,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238888187] [2022-12-13 18:07:05,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238888187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:05,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:05,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:07:05,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242383310] [2022-12-13 18:07:05,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:05,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:07:05,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:05,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:07:05,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:07:07,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 499 [2022-12-13 18:07:07,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 266 flow. Second operand has 10 states, 10 states have (on average 220.3) internal successors, (2203), 10 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:07,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:07,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 499 [2022-12-13 18:07:07,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:08,343 INFO L130 PetriNetUnfolder]: 2935/4970 cut-off events. [2022-12-13 18:07:08,343 INFO L131 PetriNetUnfolder]: For 915/915 co-relation queries the response was YES. [2022-12-13 18:07:08,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11123 conditions, 4970 events. 2935/4970 cut-off events. For 915/915 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 27139 event pairs, 327 based on Foata normal form. 0/4412 useless extension candidates. Maximal degree in co-relation 11114. Up to 3195 conditions per place. [2022-12-13 18:07:08,360 INFO L137 encePairwiseOnDemand]: 488/499 looper letters, 165 selfloop transitions, 23 changer transitions 2/197 dead transitions. [2022-12-13 18:07:08,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 197 transitions, 958 flow [2022-12-13 18:07:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:07:08,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 18:07:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2146 transitions. [2022-12-13 18:07:08,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4778445780449789 [2022-12-13 18:07:08,365 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2146 transitions. [2022-12-13 18:07:08,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2146 transitions. [2022-12-13 18:07:08,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:08,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2146 transitions. [2022-12-13 18:07:08,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 238.44444444444446) internal successors, (2146), 9 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:08,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 499.0) internal successors, (4990), 10 states have internal predecessors, (4990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:08,377 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 499.0) internal successors, (4990), 10 states have internal predecessors, (4990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:08,378 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 266 flow. Second operand 9 states and 2146 transitions. [2022-12-13 18:07:08,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 197 transitions, 958 flow [2022-12-13 18:07:08,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 197 transitions, 958 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:07:08,384 INFO L231 Difference]: Finished difference. Result has 87 places, 96 transitions, 438 flow [2022-12-13 18:07:08,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=438, PETRI_PLACES=87, PETRI_TRANSITIONS=96} [2022-12-13 18:07:08,385 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 24 predicate places. [2022-12-13 18:07:08,385 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 96 transitions, 438 flow [2022-12-13 18:07:08,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 220.3) internal successors, (2203), 10 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:08,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:08,386 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:08,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:07:08,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 18:07:08,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:08,387 INFO L85 PathProgramCache]: Analyzing trace with hash -636399338, now seen corresponding path program 1 times [2022-12-13 18:07:08,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:08,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21536009] [2022-12-13 18:07:08,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:08,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:08,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:08,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21536009] [2022-12-13 18:07:08,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21536009] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:08,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:08,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:07:08,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294560871] [2022-12-13 18:07:08,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:08,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:07:08,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:08,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:07:08,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:07:08,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 499 [2022-12-13 18:07:08,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 96 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:08,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:08,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 499 [2022-12-13 18:07:08,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:08,726 INFO L130 PetriNetUnfolder]: 1737/2991 cut-off events. [2022-12-13 18:07:08,726 INFO L131 PetriNetUnfolder]: For 604/609 co-relation queries the response was YES. [2022-12-13 18:07:08,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6939 conditions, 2991 events. 1737/2991 cut-off events. For 604/609 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 13104 event pairs, 874 based on Foata normal form. 105/2712 useless extension candidates. Maximal degree in co-relation 6922. Up to 1599 conditions per place. [2022-12-13 18:07:08,739 INFO L137 encePairwiseOnDemand]: 495/499 looper letters, 93 selfloop transitions, 3 changer transitions 2/109 dead transitions. [2022-12-13 18:07:08,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 109 transitions, 618 flow [2022-12-13 18:07:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:07:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:07:08,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 841 transitions. [2022-12-13 18:07:08,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5617902471609887 [2022-12-13 18:07:08,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 841 transitions. [2022-12-13 18:07:08,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 841 transitions. [2022-12-13 18:07:08,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:08,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 841 transitions. [2022-12-13 18:07:08,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:08,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:08,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:08,745 INFO L175 Difference]: Start difference. First operand has 87 places, 96 transitions, 438 flow. Second operand 3 states and 841 transitions. [2022-12-13 18:07:08,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 109 transitions, 618 flow [2022-12-13 18:07:08,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 109 transitions, 584 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-12-13 18:07:08,750 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 318 flow [2022-12-13 18:07:08,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2022-12-13 18:07:08,751 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 18 predicate places. [2022-12-13 18:07:08,751 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 318 flow [2022-12-13 18:07:08,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:08,751 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:08,752 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:08,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:07:08,752 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)] === [2022-12-13 18:07:08,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:08,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1368649129, now seen corresponding path program 1 times [2022-12-13 18:07:08,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:08,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645817208] [2022-12-13 18:07:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:08,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:09,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:09,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645817208] [2022-12-13 18:07:09,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645817208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:09,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:09,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:07:09,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184747506] [2022-12-13 18:07:09,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:09,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:07:09,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:09,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:07:09,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:07:09,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 499 [2022-12-13 18:07:09,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 318 flow. Second operand has 10 states, 10 states have (on average 219.3) internal successors, (2193), 10 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:09,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:09,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 499 [2022-12-13 18:07:09,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:10,491 INFO L130 PetriNetUnfolder]: 1745/3026 cut-off events. [2022-12-13 18:07:10,491 INFO L131 PetriNetUnfolder]: For 624/624 co-relation queries the response was YES. [2022-12-13 18:07:10,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7018 conditions, 3026 events. 1745/3026 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13302 event pairs, 1271 based on Foata normal form. 0/2679 useless extension candidates. Maximal degree in co-relation 7004. Up to 2791 conditions per place. [2022-12-13 18:07:10,505 INFO L137 encePairwiseOnDemand]: 488/499 looper letters, 74 selfloop transitions, 17 changer transitions 1/100 dead transitions. [2022-12-13 18:07:10,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 100 transitions, 562 flow [2022-12-13 18:07:10,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:07:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 18:07:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2043 transitions. [2022-12-13 18:07:10,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45490981963927857 [2022-12-13 18:07:10,510 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2043 transitions. [2022-12-13 18:07:10,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2043 transitions. [2022-12-13 18:07:10,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:10,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2043 transitions. [2022-12-13 18:07:10,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 227.0) internal successors, (2043), 9 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:10,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 499.0) internal successors, (4990), 10 states have internal predecessors, (4990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:10,522 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 499.0) internal successors, (4990), 10 states have internal predecessors, (4990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:10,522 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 318 flow. Second operand 9 states and 2043 transitions. [2022-12-13 18:07:10,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 100 transitions, 562 flow [2022-12-13 18:07:10,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 100 transitions, 559 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:07:10,527 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 419 flow [2022-12-13 18:07:10,527 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=419, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2022-12-13 18:07:10,528 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 28 predicate places. [2022-12-13 18:07:10,528 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 419 flow [2022-12-13 18:07:10,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 219.3) internal successors, (2193), 10 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:10,529 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:10,529 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:10,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:07:10,529 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)] === [2022-12-13 18:07:10,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1374792736, now seen corresponding path program 1 times [2022-12-13 18:07:10,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:10,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469310999] [2022-12-13 18:07:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:10,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:11,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:11,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469310999] [2022-12-13 18:07:11,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469310999] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:11,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:11,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:07:11,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784230842] [2022-12-13 18:07:11,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:11,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:07:11,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:11,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:07:11,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:07:11,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 499 [2022-12-13 18:07:11,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 419 flow. Second operand has 11 states, 11 states have (on average 216.27272727272728) internal successors, (2379), 11 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:11,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:11,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 499 [2022-12-13 18:07:11,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:12,552 INFO L130 PetriNetUnfolder]: 1721/3034 cut-off events. [2022-12-13 18:07:12,552 INFO L131 PetriNetUnfolder]: For 822/822 co-relation queries the response was YES. [2022-12-13 18:07:12,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7070 conditions, 3034 events. 1721/3034 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13660 event pairs, 534 based on Foata normal form. 9/2699 useless extension candidates. Maximal degree in co-relation 7052. Up to 2296 conditions per place. [2022-12-13 18:07:12,562 INFO L137 encePairwiseOnDemand]: 487/499 looper letters, 102 selfloop transitions, 20 changer transitions 10/140 dead transitions. [2022-12-13 18:07:12,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 140 transitions, 786 flow [2022-12-13 18:07:12,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:07:12,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 18:07:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2051 transitions. [2022-12-13 18:07:12,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4566911600979737 [2022-12-13 18:07:12,567 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2051 transitions. [2022-12-13 18:07:12,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2051 transitions. [2022-12-13 18:07:12,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:12,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2051 transitions. [2022-12-13 18:07:12,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 227.88888888888889) internal successors, (2051), 9 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:12,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 499.0) internal successors, (4990), 10 states have internal predecessors, (4990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:12,574 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 499.0) internal successors, (4990), 10 states have internal predecessors, (4990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:12,574 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 419 flow. Second operand 9 states and 2051 transitions. [2022-12-13 18:07:12,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 140 transitions, 786 flow [2022-12-13 18:07:12,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 140 transitions, 754 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-12-13 18:07:12,578 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 434 flow [2022-12-13 18:07:12,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=434, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2022-12-13 18:07:12,578 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 30 predicate places. [2022-12-13 18:07:12,578 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 434 flow [2022-12-13 18:07:12,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 216.27272727272728) internal successors, (2379), 11 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:12,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:12,579 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:12,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:07:12,579 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)] === [2022-12-13 18:07:12,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:12,580 INFO L85 PathProgramCache]: Analyzing trace with hash 522233602, now seen corresponding path program 2 times [2022-12-13 18:07:12,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:12,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989210272] [2022-12-13 18:07:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:12,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:13,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:13,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989210272] [2022-12-13 18:07:13,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989210272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:13,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:13,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:07:13,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572813861] [2022-12-13 18:07:13,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:13,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:07:13,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:13,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:07:13,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:07:15,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 499 [2022-12-13 18:07:15,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 434 flow. Second operand has 11 states, 11 states have (on average 216.27272727272728) internal successors, (2379), 11 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:15,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:15,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 499 [2022-12-13 18:07:15,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:15,876 INFO L130 PetriNetUnfolder]: 1734/3017 cut-off events. [2022-12-13 18:07:15,876 INFO L131 PetriNetUnfolder]: For 885/885 co-relation queries the response was YES. [2022-12-13 18:07:15,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 3017 events. 1734/3017 cut-off events. For 885/885 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13280 event pairs, 554 based on Foata normal form. 0/2668 useless extension candidates. Maximal degree in co-relation 7183. Up to 2028 conditions per place. [2022-12-13 18:07:15,884 INFO L137 encePairwiseOnDemand]: 487/499 looper letters, 103 selfloop transitions, 24 changer transitions 10/145 dead transitions. [2022-12-13 18:07:15,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 145 transitions, 843 flow [2022-12-13 18:07:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:07:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 18:07:15,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2269 transitions. [2022-12-13 18:07:15,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45470941883767535 [2022-12-13 18:07:15,888 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2269 transitions. [2022-12-13 18:07:15,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2269 transitions. [2022-12-13 18:07:15,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:15,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2269 transitions. [2022-12-13 18:07:15,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 226.9) internal successors, (2269), 10 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:15,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 499.0) internal successors, (5489), 11 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:15,895 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 499.0) internal successors, (5489), 11 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:15,895 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 434 flow. Second operand 10 states and 2269 transitions. [2022-12-13 18:07:15,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 145 transitions, 843 flow [2022-12-13 18:07:15,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 145 transitions, 808 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-12-13 18:07:15,900 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 464 flow [2022-12-13 18:07:15,900 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=464, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2022-12-13 18:07:15,900 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 34 predicate places. [2022-12-13 18:07:15,900 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 464 flow [2022-12-13 18:07:15,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 216.27272727272728) internal successors, (2379), 11 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:15,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:15,901 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:07:15,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:07:15,901 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)] === [2022-12-13 18:07:15,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:15,901 INFO L85 PathProgramCache]: Analyzing trace with hash 521541682, now seen corresponding path program 3 times [2022-12-13 18:07:15,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:15,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973997220] [2022-12-13 18:07:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:15,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:16,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:16,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973997220] [2022-12-13 18:07:16,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973997220] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:16,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:16,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:07:16,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021956823] [2022-12-13 18:07:16,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:16,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:07:16,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:16,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:07:16,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:07:17,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 499 [2022-12-13 18:07:17,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 464 flow. Second operand has 11 states, 11 states have (on average 216.27272727272728) internal successors, (2379), 11 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:17,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 499 [2022-12-13 18:07:17,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:17,862 INFO L130 PetriNetUnfolder]: 1721/2986 cut-off events. [2022-12-13 18:07:17,862 INFO L131 PetriNetUnfolder]: For 993/993 co-relation queries the response was YES. [2022-12-13 18:07:17,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7190 conditions, 2986 events. 1721/2986 cut-off events. For 993/993 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13074 event pairs, 543 based on Foata normal form. 0/2650 useless extension candidates. Maximal degree in co-relation 7170. Up to 2028 conditions per place. [2022-12-13 18:07:17,870 INFO L137 encePairwiseOnDemand]: 489/499 looper letters, 98 selfloop transitions, 22 changer transitions 10/137 dead transitions. [2022-12-13 18:07:17,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 137 transitions, 831 flow [2022-12-13 18:07:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:07:17,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 18:07:17,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2045 transitions. [2022-12-13 18:07:17,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45535515475395233 [2022-12-13 18:07:17,873 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2045 transitions. [2022-12-13 18:07:17,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2045 transitions. [2022-12-13 18:07:17,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:17,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2045 transitions. [2022-12-13 18:07:17,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 227.22222222222223) internal successors, (2045), 9 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 499.0) internal successors, (4990), 10 states have internal predecessors, (4990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,879 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 499.0) internal successors, (4990), 10 states have internal predecessors, (4990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,879 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 464 flow. Second operand 9 states and 2045 transitions. [2022-12-13 18:07:17,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 137 transitions, 831 flow [2022-12-13 18:07:17,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 796 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-12-13 18:07:17,883 INFO L231 Difference]: Finished difference. Result has 95 places, 87 transitions, 465 flow [2022-12-13 18:07:17,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=465, PETRI_PLACES=95, PETRI_TRANSITIONS=87} [2022-12-13 18:07:17,884 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 32 predicate places. [2022-12-13 18:07:17,884 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 87 transitions, 465 flow [2022-12-13 18:07:17,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 216.27272727272728) internal successors, (2379), 11 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:17,885 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] [2022-12-13 18:07:17,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:07:17,885 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)] === [2022-12-13 18:07:17,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:17,885 INFO L85 PathProgramCache]: Analyzing trace with hash 166867820, now seen corresponding path program 1 times [2022-12-13 18:07:17,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:17,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615047539] [2022-12-13 18:07:17,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:17,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:17,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:17,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615047539] [2022-12-13 18:07:17,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615047539] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:17,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:17,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:07:17,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783213997] [2022-12-13 18:07:17,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:17,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:07:17,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:17,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:07:17,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:07:17,964 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 499 [2022-12-13 18:07:17,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 87 transitions, 465 flow. Second operand has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:17,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:17,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 499 [2022-12-13 18:07:17,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:18,176 INFO L130 PetriNetUnfolder]: 971/1808 cut-off events. [2022-12-13 18:07:18,176 INFO L131 PetriNetUnfolder]: For 704/704 co-relation queries the response was YES. [2022-12-13 18:07:18,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4478 conditions, 1808 events. 971/1808 cut-off events. For 704/704 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 7615 event pairs, 259 based on Foata normal form. 2/1690 useless extension candidates. Maximal degree in co-relation 4458. Up to 1339 conditions per place. [2022-12-13 18:07:18,181 INFO L137 encePairwiseOnDemand]: 493/499 looper letters, 78 selfloop transitions, 7 changer transitions 0/96 dead transitions. [2022-12-13 18:07:18,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 96 transitions, 655 flow [2022-12-13 18:07:18,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:07:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:07:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 817 transitions. [2022-12-13 18:07:18,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5457581830327322 [2022-12-13 18:07:18,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 817 transitions. [2022-12-13 18:07:18,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 817 transitions. [2022-12-13 18:07:18,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:18,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 817 transitions. [2022-12-13 18:07:18,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:18,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:18,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:18,187 INFO L175 Difference]: Start difference. First operand has 95 places, 87 transitions, 465 flow. Second operand 3 states and 817 transitions. [2022-12-13 18:07:18,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 96 transitions, 655 flow [2022-12-13 18:07:18,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 96 transitions, 605 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-12-13 18:07:18,191 INFO L231 Difference]: Finished difference. Result has 89 places, 85 transitions, 415 flow [2022-12-13 18:07:18,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=415, PETRI_PLACES=89, PETRI_TRANSITIONS=85} [2022-12-13 18:07:18,192 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 26 predicate places. [2022-12-13 18:07:18,192 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 85 transitions, 415 flow [2022-12-13 18:07:18,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:18,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:18,192 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] [2022-12-13 18:07:18,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:07:18,193 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)] === [2022-12-13 18:07:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:18,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1206963054, now seen corresponding path program 1 times [2022-12-13 18:07:18,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:18,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640084619] [2022-12-13 18:07:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:18,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:19,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:19,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640084619] [2022-12-13 18:07:19,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640084619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:19,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:19,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 18:07:19,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904303067] [2022-12-13 18:07:19,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:19,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:07:19,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:19,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:07:19,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:07:20,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 499 [2022-12-13 18:07:20,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 415 flow. Second operand has 14 states, 14 states have (on average 214.5) internal successors, (3003), 14 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:20,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:20,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 499 [2022-12-13 18:07:20,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:22,004 INFO L130 PetriNetUnfolder]: 1005/1884 cut-off events. [2022-12-13 18:07:22,004 INFO L131 PetriNetUnfolder]: For 587/589 co-relation queries the response was YES. [2022-12-13 18:07:22,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4676 conditions, 1884 events. 1005/1884 cut-off events. For 587/589 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8120 event pairs, 495 based on Foata normal form. 17/1847 useless extension candidates. Maximal degree in co-relation 4656. Up to 1172 conditions per place. [2022-12-13 18:07:22,009 INFO L137 encePairwiseOnDemand]: 483/499 looper letters, 118 selfloop transitions, 30 changer transitions 25/180 dead transitions. [2022-12-13 18:07:22,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 180 transitions, 1036 flow [2022-12-13 18:07:22,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:07:22,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 18:07:22,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3548 transitions. [2022-12-13 18:07:22,013 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44438877755511025 [2022-12-13 18:07:22,014 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3548 transitions. [2022-12-13 18:07:22,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3548 transitions. [2022-12-13 18:07:22,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:22,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3548 transitions. [2022-12-13 18:07:22,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 221.75) internal successors, (3548), 16 states have internal predecessors, (3548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:22,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 499.0) internal successors, (8483), 17 states have internal predecessors, (8483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:22,022 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 499.0) internal successors, (8483), 17 states have internal predecessors, (8483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:22,023 INFO L175 Difference]: Start difference. First operand has 89 places, 85 transitions, 415 flow. Second operand 16 states and 3548 transitions. [2022-12-13 18:07:22,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 180 transitions, 1036 flow [2022-12-13 18:07:22,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 180 transitions, 1025 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:07:22,027 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 557 flow [2022-12-13 18:07:22,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=557, PETRI_PLACES=109, PETRI_TRANSITIONS=95} [2022-12-13 18:07:22,028 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 46 predicate places. [2022-12-13 18:07:22,028 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 557 flow [2022-12-13 18:07:22,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 214.5) internal successors, (3003), 14 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:22,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:22,028 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] [2022-12-13 18:07:22,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:07:22,028 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)] === [2022-12-13 18:07:22,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:22,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1334026744, now seen corresponding path program 2 times [2022-12-13 18:07:22,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:22,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635137824] [2022-12-13 18:07:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:22,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:22,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:22,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635137824] [2022-12-13 18:07:22,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635137824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:22,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:22,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 18:07:22,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079577259] [2022-12-13 18:07:22,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:22,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:07:22,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:22,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:07:22,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:07:23,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 499 [2022-12-13 18:07:23,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 95 transitions, 557 flow. Second operand has 14 states, 14 states have (on average 214.5) internal successors, (3003), 14 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:23,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:23,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 499 [2022-12-13 18:07:23,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:24,378 INFO L130 PetriNetUnfolder]: 1331/2484 cut-off events. [2022-12-13 18:07:24,379 INFO L131 PetriNetUnfolder]: For 1363/1365 co-relation queries the response was YES. [2022-12-13 18:07:24,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6441 conditions, 2484 events. 1331/2484 cut-off events. For 1363/1365 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 11589 event pairs, 236 based on Foata normal form. 18/2437 useless extension candidates. Maximal degree in co-relation 6414. Up to 952 conditions per place. [2022-12-13 18:07:24,388 INFO L137 encePairwiseOnDemand]: 481/499 looper letters, 130 selfloop transitions, 34 changer transitions 17/188 dead transitions. [2022-12-13 18:07:24,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 188 transitions, 1192 flow [2022-12-13 18:07:24,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:07:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 18:07:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3123 transitions. [2022-12-13 18:07:24,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44703693100486686 [2022-12-13 18:07:24,394 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3123 transitions. [2022-12-13 18:07:24,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3123 transitions. [2022-12-13 18:07:24,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:24,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3123 transitions. [2022-12-13 18:07:24,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 223.07142857142858) internal successors, (3123), 14 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:24,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 499.0) internal successors, (7485), 15 states have internal predecessors, (7485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:24,409 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 499.0) internal successors, (7485), 15 states have internal predecessors, (7485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:24,409 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 557 flow. Second operand 14 states and 3123 transitions. [2022-12-13 18:07:24,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 188 transitions, 1192 flow [2022-12-13 18:07:24,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 188 transitions, 1150 flow, removed 7 selfloop flow, removed 9 redundant places. [2022-12-13 18:07:24,418 INFO L231 Difference]: Finished difference. Result has 115 places, 103 transitions, 669 flow [2022-12-13 18:07:24,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=669, PETRI_PLACES=115, PETRI_TRANSITIONS=103} [2022-12-13 18:07:24,419 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 52 predicate places. [2022-12-13 18:07:24,419 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 103 transitions, 669 flow [2022-12-13 18:07:24,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 214.5) internal successors, (3003), 14 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:24,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:24,420 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] [2022-12-13 18:07:24,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:07:24,420 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)] === [2022-12-13 18:07:24,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:24,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1580738380, now seen corresponding path program 3 times [2022-12-13 18:07:24,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:24,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911767554] [2022-12-13 18:07:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:24,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:25,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:25,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911767554] [2022-12-13 18:07:25,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911767554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:25,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:25,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 18:07:25,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75295887] [2022-12-13 18:07:25,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:25,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:07:25,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:25,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:07:25,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:07:25,994 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 499 [2022-12-13 18:07:25,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 103 transitions, 669 flow. Second operand has 14 states, 14 states have (on average 214.5) internal successors, (3003), 14 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:25,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:25,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 499 [2022-12-13 18:07:25,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:26,729 INFO L130 PetriNetUnfolder]: 1128/2115 cut-off events. [2022-12-13 18:07:26,729 INFO L131 PetriNetUnfolder]: For 1657/1657 co-relation queries the response was YES. [2022-12-13 18:07:26,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5916 conditions, 2115 events. 1128/2115 cut-off events. For 1657/1657 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 9236 event pairs, 215 based on Foata normal form. 14/2077 useless extension candidates. Maximal degree in co-relation 5886. Up to 882 conditions per place. [2022-12-13 18:07:26,735 INFO L137 encePairwiseOnDemand]: 485/499 looper letters, 123 selfloop transitions, 29 changer transitions 18/177 dead transitions. [2022-12-13 18:07:26,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 177 transitions, 1211 flow [2022-12-13 18:07:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:07:26,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 18:07:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3107 transitions. [2022-12-13 18:07:26,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4447466361294017 [2022-12-13 18:07:26,739 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3107 transitions. [2022-12-13 18:07:26,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3107 transitions. [2022-12-13 18:07:26,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:26,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3107 transitions. [2022-12-13 18:07:26,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 221.92857142857142) internal successors, (3107), 14 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:26,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 499.0) internal successors, (7485), 15 states have internal predecessors, (7485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:26,747 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 499.0) internal successors, (7485), 15 states have internal predecessors, (7485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:26,748 INFO L175 Difference]: Start difference. First operand has 115 places, 103 transitions, 669 flow. Second operand 14 states and 3107 transitions. [2022-12-13 18:07:26,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 177 transitions, 1211 flow [2022-12-13 18:07:26,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 177 transitions, 1167 flow, removed 5 selfloop flow, removed 9 redundant places. [2022-12-13 18:07:26,755 INFO L231 Difference]: Finished difference. Result has 121 places, 104 transitions, 715 flow [2022-12-13 18:07:26,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=715, PETRI_PLACES=121, PETRI_TRANSITIONS=104} [2022-12-13 18:07:26,755 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 58 predicate places. [2022-12-13 18:07:26,755 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 715 flow [2022-12-13 18:07:26,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 214.5) internal successors, (3003), 14 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:26,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:26,756 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] [2022-12-13 18:07:26,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:07:26,756 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 18:07:26,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:26,756 INFO L85 PathProgramCache]: Analyzing trace with hash -837170601, now seen corresponding path program 1 times [2022-12-13 18:07:26,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:26,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284412597] [2022-12-13 18:07:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:26,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:07:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:07:27,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:07:27,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284412597] [2022-12-13 18:07:27,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284412597] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:07:27,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:07:27,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-13 18:07:27,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857439229] [2022-12-13 18:07:27,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:07:27,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:07:27,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:07:27,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:07:27,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:07:29,090 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 499 [2022-12-13 18:07:29,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 104 transitions, 715 flow. Second operand has 17 states, 17 states have (on average 221.11764705882354) internal successors, (3759), 17 states have internal predecessors, (3759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:29,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:07:29,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 499 [2022-12-13 18:07:29,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:07:29,936 INFO L130 PetriNetUnfolder]: 1288/2426 cut-off events. [2022-12-13 18:07:29,936 INFO L131 PetriNetUnfolder]: For 2192/2194 co-relation queries the response was YES. [2022-12-13 18:07:29,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6746 conditions, 2426 events. 1288/2426 cut-off events. For 2192/2194 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 11081 event pairs, 528 based on Foata normal form. 0/2362 useless extension candidates. Maximal degree in co-relation 6713. Up to 1397 conditions per place. [2022-12-13 18:07:29,943 INFO L137 encePairwiseOnDemand]: 483/499 looper letters, 144 selfloop transitions, 30 changer transitions 11/192 dead transitions. [2022-12-13 18:07:29,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 192 transitions, 1309 flow [2022-12-13 18:07:29,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 18:07:29,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 18:07:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3002 transitions. [2022-12-13 18:07:29,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4627716972406351 [2022-12-13 18:07:29,946 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3002 transitions. [2022-12-13 18:07:29,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3002 transitions. [2022-12-13 18:07:29,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:07:29,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3002 transitions. [2022-12-13 18:07:29,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 230.92307692307693) internal successors, (3002), 13 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:29,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 499.0) internal successors, (6986), 14 states have internal predecessors, (6986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:29,953 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 499.0) internal successors, (6986), 14 states have internal predecessors, (6986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:29,953 INFO L175 Difference]: Start difference. First operand has 121 places, 104 transitions, 715 flow. Second operand 13 states and 3002 transitions. [2022-12-13 18:07:29,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 192 transitions, 1309 flow [2022-12-13 18:07:29,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 192 transitions, 1255 flow, removed 4 selfloop flow, removed 11 redundant places. [2022-12-13 18:07:29,961 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 761 flow [2022-12-13 18:07:29,961 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=761, PETRI_PLACES=124, PETRI_TRANSITIONS=109} [2022-12-13 18:07:29,962 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 61 predicate places. [2022-12-13 18:07:29,962 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 761 flow [2022-12-13 18:07:29,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 221.11764705882354) internal successors, (3759), 17 states have internal predecessors, (3759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:07:29,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:07:29,962 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] [2022-12-13 18:07:29,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:07:29,963 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 18:07:29,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:07:29,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1794296615, now seen corresponding path program 2 times [2022-12-13 18:07:29,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:07:29,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146280353] [2022-12-13 18:07:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:07:29,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:07:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat