./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS --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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --- 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-4e7fbc6 [2022-11-23 03:34:00,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:34:00,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:34:00,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:34:00,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:34:00,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:34:00,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:34:00,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:34:00,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:34:00,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:34:00,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:34:00,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:34:00,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:34:00,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:34:00,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:34:00,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:34:00,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:34:00,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:34:00,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:34:00,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:34:00,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:34:00,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:34:00,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:34:00,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:34:00,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:34:00,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:34:00,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:34:00,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:34:00,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:34:00,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:34:00,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:34:00,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:34:00,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:34:00,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:34:00,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:34:00,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:34:00,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:34:00,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:34:00,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:34:00,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:34:00,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:34:00,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:34:00,306 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:34:00,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:34:00,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:34:00,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:34:00,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:34:00,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:34:00,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:34:00,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:34:00,308 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:34:00,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:34:00,309 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:34:00,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:34:00,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:34:00,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:34:00,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:34:00,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:34:00,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:34:00,310 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:34:00,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:34:00,310 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:34:00,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:34:00,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:34:00,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:34:00,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:34:00,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:34:00,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:34:00,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:34:00,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:34:00,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:34:00,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:34:00,312 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:34:00,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:34:00,312 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:34:00,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:34:00,313 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_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 [2022-11-23 03:34:00,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:34:00,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:34:00,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:34:00,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:34:00,672 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:34:00,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-23 03:34:03,585 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:34:03,784 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:34:03,785 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-23 03:34:03,793 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS/data/25eb6ef54/d1d9bebd566c4060ba0cfbc948877e08/FLAG6b4680233 [2022-11-23 03:34:03,809 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS/data/25eb6ef54/d1d9bebd566c4060ba0cfbc948877e08 [2022-11-23 03:34:03,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:34:03,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:34:03,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:34:03,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:34:03,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:34:03,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:03" (1/1) ... [2022-11-23 03:34:03,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1610c7ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:03, skipping insertion in model container [2022-11-23 03:34:03,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:03" (1/1) ... [2022-11-23 03:34:03,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:34:03,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:34:04,041 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_476b4873-10da-4db6-adb5-45264b604b93/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-23 03:34:04,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:34:04,061 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:34:04,092 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_476b4873-10da-4db6-adb5-45264b604b93/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-23 03:34:04,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:34:04,112 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:34:04,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:04 WrapperNode [2022-11-23 03:34:04,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:34:04,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:34:04,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:34:04,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:34:04,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:04" (1/1) ... [2022-11-23 03:34:04,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:04" (1/1) ... [2022-11-23 03:34:04,156 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 172 [2022-11-23 03:34:04,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:34:04,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:34:04,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:34:04,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:34:04,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:04" (1/1) ... [2022-11-23 03:34:04,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:04" (1/1) ... [2022-11-23 03:34:04,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:04" (1/1) ... [2022-11-23 03:34:04,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:04" (1/1) ... [2022-11-23 03:34:04,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:04" (1/1) ... [2022-11-23 03:34:04,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:04" (1/1) ... [2022-11-23 03:34:04,218 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:04" (1/1) ... [2022-11-23 03:34:04,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:04" (1/1) ... [2022-11-23 03:34:04,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:34:04,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:34:04,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:34:04,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:34:04,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:04" (1/1) ... [2022-11-23 03:34:04,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:34:04,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:34:04,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:34:04,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b4873-10da-4db6-adb5-45264b604b93/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:34:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:34:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:34:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:34:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:34:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 03:34:04,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 03:34:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 03:34:04,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 03:34:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 03:34:04,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 03:34:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:34:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 03:34:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:34:04,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:34:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:34:04,384 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:34:04,502 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:34:04,504 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:34:05,158 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:34:05,171 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:34:05,171 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-23 03:34:05,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:05 BoogieIcfgContainer [2022-11-23 03:34:05,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:34:05,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:34:05,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:34:05,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:34:05,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:34:03" (1/3) ... [2022-11-23 03:34:05,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a929f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:34:05, skipping insertion in model container [2022-11-23 03:34:05,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:04" (2/3) ... [2022-11-23 03:34:05,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a929f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:34:05, skipping insertion in model container [2022-11-23 03:34:05,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:05" (3/3) ... [2022-11-23 03:34:05,186 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2022-11-23 03:34:05,195 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 03:34:05,212 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:34:05,212 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:34:05,212 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:34:05,399 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 03:34:05,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 302 transitions, 628 flow [2022-11-23 03:34:05,685 INFO L130 PetriNetUnfolder]: 28/299 cut-off events. [2022-11-23 03:34:05,686 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:34:05,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 299 events. 28/299 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 362 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 241. Up to 3 conditions per place. [2022-11-23 03:34:05,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 302 transitions, 628 flow [2022-11-23 03:34:05,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 288 transitions, 594 flow [2022-11-23 03:34:05,715 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:34:05,733 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 270 places, 288 transitions, 594 flow [2022-11-23 03:34:05,736 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 270 places, 288 transitions, 594 flow [2022-11-23 03:34:05,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 288 transitions, 594 flow [2022-11-23 03:34:05,813 INFO L130 PetriNetUnfolder]: 28/288 cut-off events. [2022-11-23 03:34:05,814 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:34:05,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 288 events. 28/288 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 361 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 241. Up to 3 conditions per place. [2022-11-23 03:34:05,821 INFO L119 LiptonReduction]: Number of co-enabled transitions 7560 [2022-11-23 03:34:17,351 INFO L134 LiptonReduction]: Checked pairs total: 9828 [2022-11-23 03:34:17,351 INFO L136 LiptonReduction]: Total number of compositions: 304 [2022-11-23 03:34:17,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:34:17,375 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;@55ca910e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:34:17,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 03:34:17,397 INFO L130 PetriNetUnfolder]: 11/38 cut-off events. [2022-11-23 03:34:17,398 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:34:17,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:17,399 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:34:17,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:17,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1476280795, now seen corresponding path program 1 times [2022-11-23 03:34:17,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:17,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484663493] [2022-11-23 03:34:17,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:17,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:18,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:18,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484663493] [2022-11-23 03:34:18,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484663493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:18,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:18,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:18,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201849090] [2022-11-23 03:34:18,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:18,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:18,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:18,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:18,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:18,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 606 [2022-11-23 03:34:18,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 265.8) internal successors, (1329), 5 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:18,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:18,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 606 [2022-11-23 03:34:18,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:19,109 INFO L130 PetriNetUnfolder]: 1171/1617 cut-off events. [2022-11-23 03:34:19,109 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2022-11-23 03:34:19,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3350 conditions, 1617 events. 1171/1617 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5892 event pairs, 283 based on Foata normal form. 1/1040 useless extension candidates. Maximal degree in co-relation 2879. Up to 593 conditions per place. [2022-11-23 03:34:19,122 INFO L137 encePairwiseOnDemand]: 595/606 looper letters, 100 selfloop transitions, 18 changer transitions 2/121 dead transitions. [2022-11-23 03:34:19,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 121 transitions, 539 flow [2022-11-23 03:34:19,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:34:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:34:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1955 transitions. [2022-11-23 03:34:19,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4608675153229609 [2022-11-23 03:34:19,145 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1955 transitions. [2022-11-23 03:34:19,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1955 transitions. [2022-11-23 03:34:19,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:19,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1955 transitions. [2022-11-23 03:34:19,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 279.2857142857143) internal successors, (1955), 7 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:19,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:19,178 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:19,180 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 96 flow. Second operand 7 states and 1955 transitions. [2022-11-23 03:34:19,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 121 transitions, 539 flow [2022-11-23 03:34:19,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 121 transitions, 501 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-23 03:34:19,189 INFO L231 Difference]: Finished difference. Result has 42 places, 55 transitions, 196 flow [2022-11-23 03:34:19,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=196, PETRI_PLACES=42, PETRI_TRANSITIONS=55} [2022-11-23 03:34:19,194 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2022-11-23 03:34:19,195 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 55 transitions, 196 flow [2022-11-23 03:34:19,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 265.8) internal successors, (1329), 5 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:19,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:19,196 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:34:19,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:34:19,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:19,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:19,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1797672331, now seen corresponding path program 2 times [2022-11-23 03:34:19,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:19,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922773812] [2022-11-23 03:34:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:19,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:19,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:19,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922773812] [2022-11-23 03:34:19,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922773812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:19,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:19,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:19,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95575265] [2022-11-23 03:34:19,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:19,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:19,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:19,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:19,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:19,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 606 [2022-11-23 03:34:19,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 55 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 265.8) internal successors, (1329), 5 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:19,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:19,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 606 [2022-11-23 03:34:19,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:20,316 INFO L130 PetriNetUnfolder]: 1367/1957 cut-off events. [2022-11-23 03:34:20,316 INFO L131 PetriNetUnfolder]: For 694/703 co-relation queries the response was YES. [2022-11-23 03:34:20,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5164 conditions, 1957 events. 1367/1957 cut-off events. For 694/703 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7953 event pairs, 141 based on Foata normal form. 9/1724 useless extension candidates. Maximal degree in co-relation 4458. Up to 691 conditions per place. [2022-11-23 03:34:20,330 INFO L137 encePairwiseOnDemand]: 594/606 looper letters, 114 selfloop transitions, 30 changer transitions 1/146 dead transitions. [2022-11-23 03:34:20,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 146 transitions, 760 flow [2022-11-23 03:34:20,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:34:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:34:20,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2022-11-23 03:34:20,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46298915605846297 [2022-11-23 03:34:20,336 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2022-11-23 03:34:20,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2022-11-23 03:34:20,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:20,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2022-11-23 03:34:20,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:20,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:20,353 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:20,353 INFO L175 Difference]: Start difference. First operand has 42 places, 55 transitions, 196 flow. Second operand 7 states and 1964 transitions. [2022-11-23 03:34:20,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 146 transitions, 760 flow [2022-11-23 03:34:20,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 146 transitions, 754 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-23 03:34:20,362 INFO L231 Difference]: Finished difference. Result has 51 places, 77 transitions, 409 flow [2022-11-23 03:34:20,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=409, PETRI_PLACES=51, PETRI_TRANSITIONS=77} [2022-11-23 03:34:20,364 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2022-11-23 03:34:20,364 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 77 transitions, 409 flow [2022-11-23 03:34:20,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 265.8) internal successors, (1329), 5 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:20,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:20,365 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:34:20,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:34:20,366 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:20,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:20,367 INFO L85 PathProgramCache]: Analyzing trace with hash -421301349, now seen corresponding path program 3 times [2022-11-23 03:34:20,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:20,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193827803] [2022-11-23 03:34:20,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:20,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:20,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193827803] [2022-11-23 03:34:20,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193827803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:20,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:20,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:20,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417174928] [2022-11-23 03:34:20,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:20,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:20,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:20,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:20,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:20,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 606 [2022-11-23 03:34:20,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 77 transitions, 409 flow. Second operand has 5 states, 5 states have (on average 265.8) internal successors, (1329), 5 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:20,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:20,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 606 [2022-11-23 03:34:20,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:21,461 INFO L130 PetriNetUnfolder]: 1591/2326 cut-off events. [2022-11-23 03:34:21,461 INFO L131 PetriNetUnfolder]: For 2521/2583 co-relation queries the response was YES. [2022-11-23 03:34:21,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7176 conditions, 2326 events. 1591/2326 cut-off events. For 2521/2583 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10106 event pairs, 419 based on Foata normal form. 17/2095 useless extension candidates. Maximal degree in co-relation 6379. Up to 863 conditions per place. [2022-11-23 03:34:21,481 INFO L137 encePairwiseOnDemand]: 595/606 looper letters, 109 selfloop transitions, 34 changer transitions 2/146 dead transitions. [2022-11-23 03:34:21,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 146 transitions, 921 flow [2022-11-23 03:34:21,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:34:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:34:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1956 transitions. [2022-11-23 03:34:21,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4611032531824611 [2022-11-23 03:34:21,488 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1956 transitions. [2022-11-23 03:34:21,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1956 transitions. [2022-11-23 03:34:21,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:21,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1956 transitions. [2022-11-23 03:34:21,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 279.42857142857144) internal successors, (1956), 7 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:21,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:21,506 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:21,506 INFO L175 Difference]: Start difference. First operand has 51 places, 77 transitions, 409 flow. Second operand 7 states and 1956 transitions. [2022-11-23 03:34:21,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 146 transitions, 921 flow [2022-11-23 03:34:21,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 146 transitions, 905 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-11-23 03:34:21,534 INFO L231 Difference]: Finished difference. Result has 60 places, 80 transitions, 513 flow [2022-11-23 03:34:21,535 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=513, PETRI_PLACES=60, PETRI_TRANSITIONS=80} [2022-11-23 03:34:21,535 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2022-11-23 03:34:21,536 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 80 transitions, 513 flow [2022-11-23 03:34:21,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 265.8) internal successors, (1329), 5 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:21,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:21,537 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:34:21,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:34:21,538 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:21,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:21,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1399465217, now seen corresponding path program 4 times [2022-11-23 03:34:21,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:21,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739268937] [2022-11-23 03:34:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:21,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:21,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:21,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739268937] [2022-11-23 03:34:21,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739268937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:21,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:21,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:21,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905821142] [2022-11-23 03:34:21,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:21,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:21,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:21,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:21,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:21,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 606 [2022-11-23 03:34:21,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 80 transitions, 513 flow. Second operand has 5 states, 5 states have (on average 264.8) internal successors, (1324), 5 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:21,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:21,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 606 [2022-11-23 03:34:21,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:22,596 INFO L130 PetriNetUnfolder]: 1644/2403 cut-off events. [2022-11-23 03:34:22,596 INFO L131 PetriNetUnfolder]: For 3968/4030 co-relation queries the response was YES. [2022-11-23 03:34:22,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7890 conditions, 2403 events. 1644/2403 cut-off events. For 3968/4030 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10518 event pairs, 357 based on Foata normal form. 30/2183 useless extension candidates. Maximal degree in co-relation 6995. Up to 913 conditions per place. [2022-11-23 03:34:22,616 INFO L137 encePairwiseOnDemand]: 594/606 looper letters, 122 selfloop transitions, 43 changer transitions 1/167 dead transitions. [2022-11-23 03:34:22,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 167 transitions, 1207 flow [2022-11-23 03:34:22,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:34:22,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:34:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1956 transitions. [2022-11-23 03:34:22,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4611032531824611 [2022-11-23 03:34:22,622 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1956 transitions. [2022-11-23 03:34:22,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1956 transitions. [2022-11-23 03:34:22,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:22,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1956 transitions. [2022-11-23 03:34:22,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 279.42857142857144) internal successors, (1956), 7 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:22,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:22,637 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:22,637 INFO L175 Difference]: Start difference. First operand has 60 places, 80 transitions, 513 flow. Second operand 7 states and 1956 transitions. [2022-11-23 03:34:22,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 167 transitions, 1207 flow [2022-11-23 03:34:22,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 167 transitions, 1168 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-23 03:34:22,666 INFO L231 Difference]: Finished difference. Result has 67 places, 100 transitions, 792 flow [2022-11-23 03:34:22,667 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=792, PETRI_PLACES=67, PETRI_TRANSITIONS=100} [2022-11-23 03:34:22,668 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 29 predicate places. [2022-11-23 03:34:22,668 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 100 transitions, 792 flow [2022-11-23 03:34:22,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.8) internal successors, (1324), 5 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:22,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:22,669 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:34:22,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:34:22,670 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:22,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:22,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2102702593, now seen corresponding path program 5 times [2022-11-23 03:34:22,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:22,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148286372] [2022-11-23 03:34:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:22,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:22,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:22,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148286372] [2022-11-23 03:34:22,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148286372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:22,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:22,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:22,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435091379] [2022-11-23 03:34:22,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:22,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:22,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:22,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:22,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:22,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 606 [2022-11-23 03:34:22,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 100 transitions, 792 flow. Second operand has 5 states, 5 states have (on average 264.8) internal successors, (1324), 5 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:22,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:22,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 606 [2022-11-23 03:34:22,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:23,582 INFO L130 PetriNetUnfolder]: 1738/2564 cut-off events. [2022-11-23 03:34:23,582 INFO L131 PetriNetUnfolder]: For 6848/6888 co-relation queries the response was YES. [2022-11-23 03:34:23,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9274 conditions, 2564 events. 1738/2564 cut-off events. For 6848/6888 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11494 event pairs, 761 based on Foata normal form. 1/2351 useless extension candidates. Maximal degree in co-relation 8237. Up to 1937 conditions per place. [2022-11-23 03:34:23,605 INFO L137 encePairwiseOnDemand]: 597/606 looper letters, 133 selfloop transitions, 25 changer transitions 2/161 dead transitions. [2022-11-23 03:34:23,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 161 transitions, 1422 flow [2022-11-23 03:34:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:34:23,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:34:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1396 transitions. [2022-11-23 03:34:23,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46072607260726073 [2022-11-23 03:34:23,643 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1396 transitions. [2022-11-23 03:34:23,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1396 transitions. [2022-11-23 03:34:23,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:23,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1396 transitions. [2022-11-23 03:34:23,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 279.2) internal successors, (1396), 5 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:23,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 606.0) internal successors, (3636), 6 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:23,654 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 606.0) internal successors, (3636), 6 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:23,654 INFO L175 Difference]: Start difference. First operand has 67 places, 100 transitions, 792 flow. Second operand 5 states and 1396 transitions. [2022-11-23 03:34:23,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 161 transitions, 1422 flow [2022-11-23 03:34:23,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 161 transitions, 1346 flow, removed 38 selfloop flow, removed 0 redundant places. [2022-11-23 03:34:23,711 INFO L231 Difference]: Finished difference. Result has 74 places, 112 transitions, 963 flow [2022-11-23 03:34:23,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=963, PETRI_PLACES=74, PETRI_TRANSITIONS=112} [2022-11-23 03:34:23,713 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 36 predicate places. [2022-11-23 03:34:23,713 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 112 transitions, 963 flow [2022-11-23 03:34:23,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.8) internal successors, (1324), 5 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:23,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:23,714 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:34:23,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:34:23,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:23,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:23,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1972077287, now seen corresponding path program 6 times [2022-11-23 03:34:23,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:23,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074906313] [2022-11-23 03:34:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:23,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:24,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:24,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074906313] [2022-11-23 03:34:24,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074906313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:24,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:24,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:24,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165049697] [2022-11-23 03:34:24,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:24,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:24,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:24,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:24,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:24,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 606 [2022-11-23 03:34:24,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 112 transitions, 963 flow. Second operand has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:24,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:24,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 606 [2022-11-23 03:34:24,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:24,858 INFO L130 PetriNetUnfolder]: 1745/2569 cut-off events. [2022-11-23 03:34:24,859 INFO L131 PetriNetUnfolder]: For 7687/7738 co-relation queries the response was YES. [2022-11-23 03:34:24,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9508 conditions, 2569 events. 1745/2569 cut-off events. For 7687/7738 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11567 event pairs, 317 based on Foata normal form. 25/2380 useless extension candidates. Maximal degree in co-relation 9003. Up to 1123 conditions per place. [2022-11-23 03:34:24,897 INFO L137 encePairwiseOnDemand]: 595/606 looper letters, 159 selfloop transitions, 42 changer transitions 8/210 dead transitions. [2022-11-23 03:34:24,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 210 transitions, 1877 flow [2022-11-23 03:34:24,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:34:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:34:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1971 transitions. [2022-11-23 03:34:24,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46463932107496464 [2022-11-23 03:34:24,904 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1971 transitions. [2022-11-23 03:34:24,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1971 transitions. [2022-11-23 03:34:24,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:24,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1971 transitions. [2022-11-23 03:34:24,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.57142857142856) internal successors, (1971), 7 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:24,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:24,921 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:24,921 INFO L175 Difference]: Start difference. First operand has 74 places, 112 transitions, 963 flow. Second operand 7 states and 1971 transitions. [2022-11-23 03:34:24,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 210 transitions, 1877 flow [2022-11-23 03:34:24,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 210 transitions, 1844 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-11-23 03:34:24,991 INFO L231 Difference]: Finished difference. Result has 83 places, 132 transitions, 1281 flow [2022-11-23 03:34:24,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1281, PETRI_PLACES=83, PETRI_TRANSITIONS=132} [2022-11-23 03:34:24,994 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 45 predicate places. [2022-11-23 03:34:24,994 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 132 transitions, 1281 flow [2022-11-23 03:34:24,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:24,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:24,995 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] [2022-11-23 03:34:24,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:34:24,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:24,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:24,997 INFO L85 PathProgramCache]: Analyzing trace with hash 959247487, now seen corresponding path program 1 times [2022-11-23 03:34:24,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:24,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322501426] [2022-11-23 03:34:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:24,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:25,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:25,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322501426] [2022-11-23 03:34:25,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322501426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:25,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:25,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:25,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466405288] [2022-11-23 03:34:25,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:25,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:34:25,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:25,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:34:25,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:34:25,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 606 [2022-11-23 03:34:25,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 132 transitions, 1281 flow. Second operand has 6 states, 6 states have (on average 268.3333333333333) internal successors, (1610), 6 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:25,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:25,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 606 [2022-11-23 03:34:25,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:26,647 INFO L130 PetriNetUnfolder]: 4495/6366 cut-off events. [2022-11-23 03:34:26,648 INFO L131 PetriNetUnfolder]: For 25934/26058 co-relation queries the response was YES. [2022-11-23 03:34:26,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26462 conditions, 6366 events. 4495/6366 cut-off events. For 25934/26058 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 30923 event pairs, 1891 based on Foata normal form. 5/5847 useless extension candidates. Maximal degree in co-relation 26123. Up to 1461 conditions per place. [2022-11-23 03:34:26,719 INFO L137 encePairwiseOnDemand]: 597/606 looper letters, 200 selfloop transitions, 82 changer transitions 53/336 dead transitions. [2022-11-23 03:34:26,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 336 transitions, 3700 flow [2022-11-23 03:34:26,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:34:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:34:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1991 transitions. [2022-11-23 03:34:26,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46935407826496933 [2022-11-23 03:34:26,726 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1991 transitions. [2022-11-23 03:34:26,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1991 transitions. [2022-11-23 03:34:26,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:26,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1991 transitions. [2022-11-23 03:34:26,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.42857142857144) internal successors, (1991), 7 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:26,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:26,756 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:26,756 INFO L175 Difference]: Start difference. First operand has 83 places, 132 transitions, 1281 flow. Second operand 7 states and 1991 transitions. [2022-11-23 03:34:26,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 336 transitions, 3700 flow [2022-11-23 03:34:27,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 336 transitions, 3592 flow, removed 54 selfloop flow, removed 0 redundant places. [2022-11-23 03:34:27,186 INFO L231 Difference]: Finished difference. Result has 92 places, 179 transitions, 1958 flow [2022-11-23 03:34:27,186 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1958, PETRI_PLACES=92, PETRI_TRANSITIONS=179} [2022-11-23 03:34:27,187 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 54 predicate places. [2022-11-23 03:34:27,187 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 179 transitions, 1958 flow [2022-11-23 03:34:27,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 268.3333333333333) internal successors, (1610), 6 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:27,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:27,189 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] [2022-11-23 03:34:27,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:34:27,191 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:27,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:27,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1609811594, now seen corresponding path program 1 times [2022-11-23 03:34:27,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:27,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637830524] [2022-11-23 03:34:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:27,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:27,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:27,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637830524] [2022-11-23 03:34:27,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637830524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:27,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:27,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:34:27,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917166459] [2022-11-23 03:34:27,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:27,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:27,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:27,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:27,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:27,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 606 [2022-11-23 03:34:27,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 179 transitions, 1958 flow. Second operand has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:27,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:27,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 606 [2022-11-23 03:34:27,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:29,633 INFO L130 PetriNetUnfolder]: 7143/9996 cut-off events. [2022-11-23 03:34:29,633 INFO L131 PetriNetUnfolder]: For 40844/41306 co-relation queries the response was YES. [2022-11-23 03:34:29,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41492 conditions, 9996 events. 7143/9996 cut-off events. For 40844/41306 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 50644 event pairs, 2898 based on Foata normal form. 155/9273 useless extension candidates. Maximal degree in co-relation 41431. Up to 3791 conditions per place. [2022-11-23 03:34:29,750 INFO L137 encePairwiseOnDemand]: 599/606 looper letters, 221 selfloop transitions, 57 changer transitions 38/317 dead transitions. [2022-11-23 03:34:29,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 317 transitions, 3880 flow [2022-11-23 03:34:29,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:34:29,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:34:29,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1416 transitions. [2022-11-23 03:34:29,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46732673267326735 [2022-11-23 03:34:29,755 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1416 transitions. [2022-11-23 03:34:29,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1416 transitions. [2022-11-23 03:34:29,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:29,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1416 transitions. [2022-11-23 03:34:29,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.2) internal successors, (1416), 5 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:29,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 606.0) internal successors, (3636), 6 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:29,828 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 606.0) internal successors, (3636), 6 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:29,829 INFO L175 Difference]: Start difference. First operand has 92 places, 179 transitions, 1958 flow. Second operand 5 states and 1416 transitions. [2022-11-23 03:34:29,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 317 transitions, 3880 flow [2022-11-23 03:34:30,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 317 transitions, 3751 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-23 03:34:30,737 INFO L231 Difference]: Finished difference. Result has 95 places, 203 transitions, 2287 flow [2022-11-23 03:34:30,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2287, PETRI_PLACES=95, PETRI_TRANSITIONS=203} [2022-11-23 03:34:30,739 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 57 predicate places. [2022-11-23 03:34:30,739 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 203 transitions, 2287 flow [2022-11-23 03:34:30,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:30,740 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:30,740 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] [2022-11-23 03:34:30,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:34:30,740 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:30,741 INFO L85 PathProgramCache]: Analyzing trace with hash 685634699, now seen corresponding path program 1 times [2022-11-23 03:34:30,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:30,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193054222] [2022-11-23 03:34:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:30,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:31,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:31,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193054222] [2022-11-23 03:34:31,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193054222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:31,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:31,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:31,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394004182] [2022-11-23 03:34:31,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:31,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:31,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:31,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:31,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:31,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 606 [2022-11-23 03:34:31,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 203 transitions, 2287 flow. Second operand has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:31,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:31,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 606 [2022-11-23 03:34:31,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:32,928 INFO L130 PetriNetUnfolder]: 6450/9019 cut-off events. [2022-11-23 03:34:32,928 INFO L131 PetriNetUnfolder]: For 37806/38181 co-relation queries the response was YES. [2022-11-23 03:34:33,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37135 conditions, 9019 events. 6450/9019 cut-off events. For 37806/38181 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 44891 event pairs, 2432 based on Foata normal form. 91/8286 useless extension candidates. Maximal degree in co-relation 36886. Up to 4231 conditions per place. [2022-11-23 03:34:33,248 INFO L137 encePairwiseOnDemand]: 597/606 looper letters, 166 selfloop transitions, 74 changer transitions 14/255 dead transitions. [2022-11-23 03:34:33,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 255 transitions, 2974 flow [2022-11-23 03:34:33,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:34:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:34:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1701 transitions. [2022-11-23 03:34:33,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46782178217821785 [2022-11-23 03:34:33,253 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1701 transitions. [2022-11-23 03:34:33,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1701 transitions. [2022-11-23 03:34:33,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:33,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1701 transitions. [2022-11-23 03:34:33,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.5) internal successors, (1701), 6 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:33,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:33,265 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:33,265 INFO L175 Difference]: Start difference. First operand has 95 places, 203 transitions, 2287 flow. Second operand 6 states and 1701 transitions. [2022-11-23 03:34:33,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 255 transitions, 2974 flow [2022-11-23 03:34:33,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 255 transitions, 2878 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-23 03:34:33,926 INFO L231 Difference]: Finished difference. Result has 99 places, 198 transitions, 2256 flow [2022-11-23 03:34:33,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=2195, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2256, PETRI_PLACES=99, PETRI_TRANSITIONS=198} [2022-11-23 03:34:33,927 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 61 predicate places. [2022-11-23 03:34:33,927 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 198 transitions, 2256 flow [2022-11-23 03:34:33,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:33,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:33,928 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] [2022-11-23 03:34:33,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:34:33,929 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:33,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:33,929 INFO L85 PathProgramCache]: Analyzing trace with hash -589499001, now seen corresponding path program 2 times [2022-11-23 03:34:33,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:33,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685466336] [2022-11-23 03:34:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:33,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:34,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:34,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685466336] [2022-11-23 03:34:34,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685466336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:34,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:34,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:34,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653919095] [2022-11-23 03:34:34,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:34,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:34,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:34,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:34,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:34,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 606 [2022-11-23 03:34:34,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 198 transitions, 2256 flow. Second operand has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:34,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:34,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 606 [2022-11-23 03:34:34,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:36,192 INFO L130 PetriNetUnfolder]: 6521/9191 cut-off events. [2022-11-23 03:34:36,193 INFO L131 PetriNetUnfolder]: For 46119/46494 co-relation queries the response was YES. [2022-11-23 03:34:36,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37705 conditions, 9191 events. 6521/9191 cut-off events. For 46119/46494 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 46775 event pairs, 2586 based on Foata normal form. 91/8434 useless extension candidates. Maximal degree in co-relation 37637. Up to 4975 conditions per place. [2022-11-23 03:34:36,296 INFO L137 encePairwiseOnDemand]: 596/606 looper letters, 183 selfloop transitions, 86 changer transitions 10/280 dead transitions. [2022-11-23 03:34:36,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 280 transitions, 3301 flow [2022-11-23 03:34:36,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:34:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:34:36,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1976 transitions. [2022-11-23 03:34:36,302 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46581801037246584 [2022-11-23 03:34:36,302 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1976 transitions. [2022-11-23 03:34:36,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1976 transitions. [2022-11-23 03:34:36,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:36,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1976 transitions. [2022-11-23 03:34:36,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 282.2857142857143) internal successors, (1976), 7 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:36,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:36,315 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:36,315 INFO L175 Difference]: Start difference. First operand has 99 places, 198 transitions, 2256 flow. Second operand 7 states and 1976 transitions. [2022-11-23 03:34:36,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 280 transitions, 3301 flow [2022-11-23 03:34:37,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 280 transitions, 3127 flow, removed 16 selfloop flow, removed 5 redundant places. [2022-11-23 03:34:37,113 INFO L231 Difference]: Finished difference. Result has 100 places, 203 transitions, 2342 flow [2022-11-23 03:34:37,114 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2342, PETRI_PLACES=100, PETRI_TRANSITIONS=203} [2022-11-23 03:34:37,114 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 62 predicate places. [2022-11-23 03:34:37,115 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 203 transitions, 2342 flow [2022-11-23 03:34:37,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:37,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:37,115 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] [2022-11-23 03:34:37,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:34:37,116 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:37,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:37,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1046987429, now seen corresponding path program 3 times [2022-11-23 03:34:37,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:37,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502734026] [2022-11-23 03:34:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:37,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:37,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:37,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:37,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502734026] [2022-11-23 03:34:37,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502734026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:37,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:37,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:37,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024469203] [2022-11-23 03:34:37,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:37,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:37,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:37,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:37,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:37,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 606 [2022-11-23 03:34:37,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 203 transitions, 2342 flow. Second operand has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:37,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:37,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 606 [2022-11-23 03:34:37,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:39,414 INFO L130 PetriNetUnfolder]: 6487/9278 cut-off events. [2022-11-23 03:34:39,414 INFO L131 PetriNetUnfolder]: For 44950/45220 co-relation queries the response was YES. [2022-11-23 03:34:39,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37653 conditions, 9278 events. 6487/9278 cut-off events. For 44950/45220 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 48863 event pairs, 2458 based on Foata normal form. 139/8599 useless extension candidates. Maximal degree in co-relation 37404. Up to 4231 conditions per place. [2022-11-23 03:34:39,499 INFO L137 encePairwiseOnDemand]: 597/606 looper letters, 168 selfloop transitions, 70 changer transitions 13/252 dead transitions. [2022-11-23 03:34:39,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 252 transitions, 2991 flow [2022-11-23 03:34:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:34:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:34:39,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1700 transitions. [2022-11-23 03:34:39,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4675467546754675 [2022-11-23 03:34:39,505 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1700 transitions. [2022-11-23 03:34:39,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1700 transitions. [2022-11-23 03:34:39,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:39,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1700 transitions. [2022-11-23 03:34:39,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:39,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:39,516 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:39,516 INFO L175 Difference]: Start difference. First operand has 100 places, 203 transitions, 2342 flow. Second operand 6 states and 1700 transitions. [2022-11-23 03:34:39,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 252 transitions, 2991 flow [2022-11-23 03:34:40,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 252 transitions, 2871 flow, removed 40 selfloop flow, removed 2 redundant places. [2022-11-23 03:34:40,124 INFO L231 Difference]: Finished difference. Result has 104 places, 199 transitions, 2299 flow [2022-11-23 03:34:40,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=2226, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2299, PETRI_PLACES=104, PETRI_TRANSITIONS=199} [2022-11-23 03:34:40,124 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 66 predicate places. [2022-11-23 03:34:40,125 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 199 transitions, 2299 flow [2022-11-23 03:34:40,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:40,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:40,125 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] [2022-11-23 03:34:40,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 03:34:40,126 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:40,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:40,126 INFO L85 PathProgramCache]: Analyzing trace with hash -183229537, now seen corresponding path program 4 times [2022-11-23 03:34:40,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:40,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651429694] [2022-11-23 03:34:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:40,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:40,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:40,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651429694] [2022-11-23 03:34:40,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651429694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:40,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:40,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:40,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351379203] [2022-11-23 03:34:40,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:40,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:40,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:40,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:40,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 606 [2022-11-23 03:34:40,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 199 transitions, 2299 flow. Second operand has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:40,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:40,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 606 [2022-11-23 03:34:40,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:42,229 INFO L130 PetriNetUnfolder]: 6496/9317 cut-off events. [2022-11-23 03:34:42,229 INFO L131 PetriNetUnfolder]: For 52478/52748 co-relation queries the response was YES. [2022-11-23 03:34:42,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38492 conditions, 9317 events. 6496/9317 cut-off events. For 52478/52748 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 49382 event pairs, 2468 based on Foata normal form. 139/8630 useless extension candidates. Maximal degree in co-relation 38424. Up to 4231 conditions per place. [2022-11-23 03:34:42,328 INFO L137 encePairwiseOnDemand]: 596/606 looper letters, 183 selfloop transitions, 73 changer transitions 10/267 dead transitions. [2022-11-23 03:34:42,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 267 transitions, 3151 flow [2022-11-23 03:34:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:34:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:34:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1705 transitions. [2022-11-23 03:34:42,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4689218921892189 [2022-11-23 03:34:42,333 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1705 transitions. [2022-11-23 03:34:42,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1705 transitions. [2022-11-23 03:34:42,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:42,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1705 transitions. [2022-11-23 03:34:42,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.1666666666667) internal successors, (1705), 6 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:42,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:42,344 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:42,344 INFO L175 Difference]: Start difference. First operand has 104 places, 199 transitions, 2299 flow. Second operand 6 states and 1705 transitions. [2022-11-23 03:34:42,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 267 transitions, 3151 flow [2022-11-23 03:34:43,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 267 transitions, 2987 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-11-23 03:34:43,073 INFO L231 Difference]: Finished difference. Result has 104 places, 201 transitions, 2319 flow [2022-11-23 03:34:43,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=2141, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2319, PETRI_PLACES=104, PETRI_TRANSITIONS=201} [2022-11-23 03:34:43,073 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 66 predicate places. [2022-11-23 03:34:43,074 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 201 transitions, 2319 flow [2022-11-23 03:34:43,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:43,074 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:43,075 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] [2022-11-23 03:34:43,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 03:34:43,075 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:43,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:43,075 INFO L85 PathProgramCache]: Analyzing trace with hash -854541705, now seen corresponding path program 5 times [2022-11-23 03:34:43,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:43,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346819421] [2022-11-23 03:34:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:43,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:43,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:43,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346819421] [2022-11-23 03:34:43,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346819421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:43,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:43,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:43,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053955545] [2022-11-23 03:34:43,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:43,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:43,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:43,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:43,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:43,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 606 [2022-11-23 03:34:43,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 201 transitions, 2319 flow. Second operand has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:43,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:43,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 606 [2022-11-23 03:34:43,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:45,260 INFO L130 PetriNetUnfolder]: 6521/9334 cut-off events. [2022-11-23 03:34:45,260 INFO L131 PetriNetUnfolder]: For 53288/53552 co-relation queries the response was YES. [2022-11-23 03:34:45,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38643 conditions, 9334 events. 6521/9334 cut-off events. For 53288/53552 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 49517 event pairs, 1436 based on Foata normal form. 265/8761 useless extension candidates. Maximal degree in co-relation 38462. Up to 2689 conditions per place. [2022-11-23 03:34:45,323 INFO L137 encePairwiseOnDemand]: 596/606 looper letters, 196 selfloop transitions, 97 changer transitions 10/304 dead transitions. [2022-11-23 03:34:45,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 304 transitions, 3597 flow [2022-11-23 03:34:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:34:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:34:45,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1989 transitions. [2022-11-23 03:34:45,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46888260254596886 [2022-11-23 03:34:45,331 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1989 transitions. [2022-11-23 03:34:45,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1989 transitions. [2022-11-23 03:34:45,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:45,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1989 transitions. [2022-11-23 03:34:45,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.14285714285717) internal successors, (1989), 7 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:45,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:45,345 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:45,345 INFO L175 Difference]: Start difference. First operand has 104 places, 201 transitions, 2319 flow. Second operand 7 states and 1989 transitions. [2022-11-23 03:34:45,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 304 transitions, 3597 flow [2022-11-23 03:34:46,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 304 transitions, 3461 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-11-23 03:34:46,215 INFO L231 Difference]: Finished difference. Result has 109 places, 214 transitions, 2563 flow [2022-11-23 03:34:46,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=2190, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2563, PETRI_PLACES=109, PETRI_TRANSITIONS=214} [2022-11-23 03:34:46,216 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 71 predicate places. [2022-11-23 03:34:46,216 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 214 transitions, 2563 flow [2022-11-23 03:34:46,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:46,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:46,217 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] [2022-11-23 03:34:46,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 03:34:46,217 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:46,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash -329324027, now seen corresponding path program 6 times [2022-11-23 03:34:46,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:46,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278152930] [2022-11-23 03:34:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:46,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:34:46,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:46,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278152930] [2022-11-23 03:34:46,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278152930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:46,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:46,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:46,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212872634] [2022-11-23 03:34:46,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:46,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:46,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:46,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:46,543 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 606 [2022-11-23 03:34:46,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 214 transitions, 2563 flow. Second operand has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:46,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:46,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 606 [2022-11-23 03:34:46,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:48,096 INFO L130 PetriNetUnfolder]: 6547/9282 cut-off events. [2022-11-23 03:34:48,096 INFO L131 PetriNetUnfolder]: For 54451/54856 co-relation queries the response was YES. [2022-11-23 03:34:48,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40057 conditions, 9282 events. 6547/9282 cut-off events. For 54451/54856 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 48329 event pairs, 1346 based on Foata normal form. 214/8620 useless extension candidates. Maximal degree in co-relation 39642. Up to 2322 conditions per place. [2022-11-23 03:34:48,163 INFO L137 encePairwiseOnDemand]: 596/606 looper letters, 230 selfloop transitions, 68 changer transitions 10/309 dead transitions. [2022-11-23 03:34:48,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 309 transitions, 3778 flow [2022-11-23 03:34:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:34:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:34:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1994 transitions. [2022-11-23 03:34:48,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47006129184347006 [2022-11-23 03:34:48,173 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1994 transitions. [2022-11-23 03:34:48,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1994 transitions. [2022-11-23 03:34:48,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:48,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1994 transitions. [2022-11-23 03:34:48,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.85714285714283) internal successors, (1994), 7 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:48,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:48,187 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:48,187 INFO L175 Difference]: Start difference. First operand has 109 places, 214 transitions, 2563 flow. Second operand 7 states and 1994 transitions. [2022-11-23 03:34:48,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 309 transitions, 3778 flow [2022-11-23 03:34:49,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 309 transitions, 3639 flow, removed 43 selfloop flow, removed 1 redundant places. [2022-11-23 03:34:49,085 INFO L231 Difference]: Finished difference. Result has 115 places, 220 transitions, 2703 flow [2022-11-23 03:34:49,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2703, PETRI_PLACES=115, PETRI_TRANSITIONS=220} [2022-11-23 03:34:49,086 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 77 predicate places. [2022-11-23 03:34:49,087 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 220 transitions, 2703 flow [2022-11-23 03:34:49,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:49,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:49,087 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] [2022-11-23 03:34:49,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 03:34:49,088 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:49,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash 662286800, now seen corresponding path program 1 times [2022-11-23 03:34:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:49,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560396025] [2022-11-23 03:34:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:49,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:34:49,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:49,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560396025] [2022-11-23 03:34:49,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560396025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:49,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:49,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:49,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734730827] [2022-11-23 03:34:49,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:49,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:49,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:49,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:49,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 606 [2022-11-23 03:34:49,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 220 transitions, 2703 flow. Second operand has 5 states, 5 states have (on average 270.2) internal successors, (1351), 5 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:49,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:49,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 606 [2022-11-23 03:34:49,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:51,127 INFO L130 PetriNetUnfolder]: 6700/9466 cut-off events. [2022-11-23 03:34:51,127 INFO L131 PetriNetUnfolder]: For 75620/75692 co-relation queries the response was YES. [2022-11-23 03:34:51,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41862 conditions, 9466 events. 6700/9466 cut-off events. For 75620/75692 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 50164 event pairs, 722 based on Foata normal form. 13/8601 useless extension candidates. Maximal degree in co-relation 41591. Up to 3785 conditions per place. [2022-11-23 03:34:51,186 INFO L137 encePairwiseOnDemand]: 597/606 looper letters, 223 selfloop transitions, 130 changer transitions 6/360 dead transitions. [2022-11-23 03:34:51,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 360 transitions, 4815 flow [2022-11-23 03:34:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:34:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:34:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1990 transitions. [2022-11-23 03:34:51,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4691183404054691 [2022-11-23 03:34:51,196 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1990 transitions. [2022-11-23 03:34:51,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1990 transitions. [2022-11-23 03:34:51,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:51,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1990 transitions. [2022-11-23 03:34:51,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.2857142857143) internal successors, (1990), 7 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:51,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:51,208 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:51,208 INFO L175 Difference]: Start difference. First operand has 115 places, 220 transitions, 2703 flow. Second operand 7 states and 1990 transitions. [2022-11-23 03:34:51,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 360 transitions, 4815 flow [2022-11-23 03:34:51,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 360 transitions, 4677 flow, removed 19 selfloop flow, removed 2 redundant places. [2022-11-23 03:34:51,629 INFO L231 Difference]: Finished difference. Result has 120 places, 267 transitions, 3734 flow [2022-11-23 03:34:51,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3734, PETRI_PLACES=120, PETRI_TRANSITIONS=267} [2022-11-23 03:34:51,630 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 82 predicate places. [2022-11-23 03:34:51,630 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 267 transitions, 3734 flow [2022-11-23 03:34:51,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 270.2) internal successors, (1351), 5 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:51,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:51,631 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] [2022-11-23 03:34:51,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 03:34:51,631 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:51,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash -921195558, now seen corresponding path program 2 times [2022-11-23 03:34:51,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:51,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648446193] [2022-11-23 03:34:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:51,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:51,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:34:51,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:51,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648446193] [2022-11-23 03:34:51,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648446193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:51,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:51,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:51,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368751115] [2022-11-23 03:34:51,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:51,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:51,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:51,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:51,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:51,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 606 [2022-11-23 03:34:51,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 267 transitions, 3734 flow. Second operand has 5 states, 5 states have (on average 265.2) internal successors, (1326), 5 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:51,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:51,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 606 [2022-11-23 03:34:51,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:54,071 INFO L130 PetriNetUnfolder]: 8365/12274 cut-off events. [2022-11-23 03:34:54,072 INFO L131 PetriNetUnfolder]: For 96181/96205 co-relation queries the response was YES. [2022-11-23 03:34:54,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56081 conditions, 12274 events. 8365/12274 cut-off events. For 96181/96205 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 72480 event pairs, 300 based on Foata normal form. 25/11133 useless extension candidates. Maximal degree in co-relation 55772. Up to 3000 conditions per place. [2022-11-23 03:34:54,183 INFO L137 encePairwiseOnDemand]: 593/606 looper letters, 356 selfloop transitions, 120 changer transitions 4/481 dead transitions. [2022-11-23 03:34:54,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 481 transitions, 6891 flow [2022-11-23 03:34:54,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:34:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 03:34:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2525 transitions. [2022-11-23 03:34:54,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2022-11-23 03:34:54,195 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2525 transitions. [2022-11-23 03:34:54,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2525 transitions. [2022-11-23 03:34:54,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:54,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2525 transitions. [2022-11-23 03:34:54,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 280.55555555555554) internal successors, (2525), 9 states have internal predecessors, (2525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:54,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 606.0) internal successors, (6060), 10 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:54,211 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 606.0) internal successors, (6060), 10 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:54,212 INFO L175 Difference]: Start difference. First operand has 120 places, 267 transitions, 3734 flow. Second operand 9 states and 2525 transitions. [2022-11-23 03:34:54,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 481 transitions, 6891 flow [2022-11-23 03:34:55,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 481 transitions, 6567 flow, removed 162 selfloop flow, removed 0 redundant places. [2022-11-23 03:34:55,062 INFO L231 Difference]: Finished difference. Result has 133 places, 323 transitions, 4867 flow [2022-11-23 03:34:55,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=3582, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4867, PETRI_PLACES=133, PETRI_TRANSITIONS=323} [2022-11-23 03:34:55,062 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 95 predicate places. [2022-11-23 03:34:55,063 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 323 transitions, 4867 flow [2022-11-23 03:34:55,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 265.2) internal successors, (1326), 5 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:55,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:55,063 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] [2022-11-23 03:34:55,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 03:34:55,064 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:55,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:55,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1606150258, now seen corresponding path program 3 times [2022-11-23 03:34:55,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:55,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962379197] [2022-11-23 03:34:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:55,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:34:55,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:55,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962379197] [2022-11-23 03:34:55,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962379197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:55,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:55,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:55,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528073043] [2022-11-23 03:34:55,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:55,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:55,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:55,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:55,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:55,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 606 [2022-11-23 03:34:55,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 323 transitions, 4867 flow. Second operand has 5 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:55,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:55,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 606 [2022-11-23 03:34:55,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:57,443 INFO L130 PetriNetUnfolder]: 8354/12255 cut-off events. [2022-11-23 03:34:57,444 INFO L131 PetriNetUnfolder]: For 116607/116619 co-relation queries the response was YES. [2022-11-23 03:34:57,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59425 conditions, 12255 events. 8354/12255 cut-off events. For 116607/116619 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 72731 event pairs, 815 based on Foata normal form. 13/11102 useless extension candidates. Maximal degree in co-relation 59085. Up to 4821 conditions per place. [2022-11-23 03:34:57,555 INFO L137 encePairwiseOnDemand]: 599/606 looper letters, 381 selfloop transitions, 62 changer transitions 7/451 dead transitions. [2022-11-23 03:34:57,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 451 transitions, 6913 flow [2022-11-23 03:34:57,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:34:57,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:34:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1711 transitions. [2022-11-23 03:34:57,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4705720572057206 [2022-11-23 03:34:57,559 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1711 transitions. [2022-11-23 03:34:57,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1711 transitions. [2022-11-23 03:34:57,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:57,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1711 transitions. [2022-11-23 03:34:57,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.1666666666667) internal successors, (1711), 6 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:57,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:57,568 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:57,568 INFO L175 Difference]: Start difference. First operand has 133 places, 323 transitions, 4867 flow. Second operand 6 states and 1711 transitions. [2022-11-23 03:34:57,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 451 transitions, 6913 flow [2022-11-23 03:34:58,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 451 transitions, 6827 flow, removed 43 selfloop flow, removed 0 redundant places. [2022-11-23 03:34:58,910 INFO L231 Difference]: Finished difference. Result has 139 places, 318 transitions, 4827 flow [2022-11-23 03:34:58,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=4787, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4827, PETRI_PLACES=139, PETRI_TRANSITIONS=318} [2022-11-23 03:34:58,910 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 101 predicate places. [2022-11-23 03:34:58,911 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 318 transitions, 4827 flow [2022-11-23 03:34:58,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:58,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:58,911 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] [2022-11-23 03:34:58,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 03:34:58,911 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:34:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:58,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1000933552, now seen corresponding path program 4 times [2022-11-23 03:34:58,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:58,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387363286] [2022-11-23 03:34:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:58,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:34:59,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:59,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387363286] [2022-11-23 03:34:59,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387363286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:34:59,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:34:59,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:34:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133616931] [2022-11-23 03:34:59,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:34:59,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:34:59,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:59,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:34:59,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:34:59,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 606 [2022-11-23 03:34:59,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 318 transitions, 4827 flow. Second operand has 5 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:34:59,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:59,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 606 [2022-11-23 03:34:59,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:35:01,625 INFO L130 PetriNetUnfolder]: 8293/12146 cut-off events. [2022-11-23 03:35:01,625 INFO L131 PetriNetUnfolder]: For 116714/116750 co-relation queries the response was YES. [2022-11-23 03:35:01,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58804 conditions, 12146 events. 8293/12146 cut-off events. For 116714/116750 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 70529 event pairs, 3497 based on Foata normal form. 1/10979 useless extension candidates. Maximal degree in co-relation 58535. Up to 10279 conditions per place. [2022-11-23 03:35:01,736 INFO L137 encePairwiseOnDemand]: 600/606 looper letters, 313 selfloop transitions, 52 changer transitions 6/372 dead transitions. [2022-11-23 03:35:01,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 372 transitions, 5899 flow [2022-11-23 03:35:01,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:35:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:35:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1417 transitions. [2022-11-23 03:35:01,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46765676567656767 [2022-11-23 03:35:01,742 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1417 transitions. [2022-11-23 03:35:01,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1417 transitions. [2022-11-23 03:35:01,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:35:01,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1417 transitions. [2022-11-23 03:35:01,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.4) internal successors, (1417), 5 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:01,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 606.0) internal successors, (3636), 6 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:01,751 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 606.0) internal successors, (3636), 6 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:01,751 INFO L175 Difference]: Start difference. First operand has 139 places, 318 transitions, 4827 flow. Second operand 5 states and 1417 transitions. [2022-11-23 03:35:01,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 372 transitions, 5899 flow [2022-11-23 03:35:03,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 372 transitions, 5791 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-23 03:35:03,105 INFO L231 Difference]: Finished difference. Result has 141 places, 317 transitions, 4860 flow [2022-11-23 03:35:03,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=4725, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4860, PETRI_PLACES=141, PETRI_TRANSITIONS=317} [2022-11-23 03:35:03,106 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 103 predicate places. [2022-11-23 03:35:03,106 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 317 transitions, 4860 flow [2022-11-23 03:35:03,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:03,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:35:03,106 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] [2022-11-23 03:35:03,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 03:35:03,107 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:35:03,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:03,107 INFO L85 PathProgramCache]: Analyzing trace with hash -596715854, now seen corresponding path program 5 times [2022-11-23 03:35:03,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:03,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269048552] [2022-11-23 03:35:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:03,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:35:03,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:03,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269048552] [2022-11-23 03:35:03,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269048552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:03,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:03,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:35:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767006109] [2022-11-23 03:35:03,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:03,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:35:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:03,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:35:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:35:03,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 606 [2022-11-23 03:35:03,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 317 transitions, 4860 flow. Second operand has 5 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:03,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:35:03,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 606 [2022-11-23 03:35:03,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:35:05,851 INFO L130 PetriNetUnfolder]: 8258/11994 cut-off events. [2022-11-23 03:35:05,851 INFO L131 PetriNetUnfolder]: For 115881/116001 co-relation queries the response was YES. [2022-11-23 03:35:05,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57909 conditions, 11994 events. 8258/11994 cut-off events. For 115881/116001 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 68399 event pairs, 3499 based on Foata normal form. 1/10801 useless extension candidates. Maximal degree in co-relation 57683. Up to 10279 conditions per place. [2022-11-23 03:35:05,997 INFO L137 encePairwiseOnDemand]: 600/606 looper letters, 293 selfloop transitions, 55 changer transitions 6/355 dead transitions. [2022-11-23 03:35:05,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 355 transitions, 5700 flow [2022-11-23 03:35:05,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:35:05,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:35:05,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1412 transitions. [2022-11-23 03:35:05,999 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.466006600660066 [2022-11-23 03:35:06,000 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1412 transitions. [2022-11-23 03:35:06,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1412 transitions. [2022-11-23 03:35:06,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:35:06,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1412 transitions. [2022-11-23 03:35:06,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 282.4) internal successors, (1412), 5 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:06,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 606.0) internal successors, (3636), 6 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:06,006 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 606.0) internal successors, (3636), 6 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:06,006 INFO L175 Difference]: Start difference. First operand has 141 places, 317 transitions, 4860 flow. Second operand 5 states and 1412 transitions. [2022-11-23 03:35:06,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 355 transitions, 5700 flow [2022-11-23 03:35:07,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 355 transitions, 5642 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-23 03:35:07,451 INFO L231 Difference]: Finished difference. Result has 144 places, 312 transitions, 4850 flow [2022-11-23 03:35:07,452 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=4804, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4850, PETRI_PLACES=144, PETRI_TRANSITIONS=312} [2022-11-23 03:35:07,452 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 106 predicate places. [2022-11-23 03:35:07,452 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 312 transitions, 4850 flow [2022-11-23 03:35:07,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:07,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:35:07,452 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] [2022-11-23 03:35:07,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 03:35:07,453 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:35:07,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:07,455 INFO L85 PathProgramCache]: Analyzing trace with hash 371865622, now seen corresponding path program 6 times [2022-11-23 03:35:07,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:07,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737909841] [2022-11-23 03:35:07,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:07,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:35:07,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:07,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737909841] [2022-11-23 03:35:07,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737909841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:07,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:07,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:35:07,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053287837] [2022-11-23 03:35:07,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:07,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:35:07,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:07,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:35:07,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:35:07,700 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 606 [2022-11-23 03:35:07,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 312 transitions, 4850 flow. Second operand has 5 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:07,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:35:07,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 606 [2022-11-23 03:35:07,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:35:10,632 INFO L130 PetriNetUnfolder]: 10267/14882 cut-off events. [2022-11-23 03:35:10,632 INFO L131 PetriNetUnfolder]: For 142402/142762 co-relation queries the response was YES. [2022-11-23 03:35:10,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70647 conditions, 14882 events. 10267/14882 cut-off events. For 142402/142762 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 88537 event pairs, 821 based on Foata normal form. 289/13623 useless extension candidates. Maximal degree in co-relation 70413. Up to 6282 conditions per place. [2022-11-23 03:35:10,982 INFO L137 encePairwiseOnDemand]: 599/606 looper letters, 388 selfloop transitions, 92 changer transitions 10/491 dead transitions. [2022-11-23 03:35:10,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 491 transitions, 7675 flow [2022-11-23 03:35:10,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:35:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:35:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1717 transitions. [2022-11-23 03:35:10,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2022-11-23 03:35:10,985 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1717 transitions. [2022-11-23 03:35:10,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1717 transitions. [2022-11-23 03:35:10,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:35:10,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1717 transitions. [2022-11-23 03:35:10,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:10,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:10,992 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:10,992 INFO L175 Difference]: Start difference. First operand has 144 places, 312 transitions, 4850 flow. Second operand 6 states and 1717 transitions. [2022-11-23 03:35:10,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 491 transitions, 7675 flow [2022-11-23 03:35:12,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 491 transitions, 7538 flow, removed 19 selfloop flow, removed 3 redundant places. [2022-11-23 03:35:12,675 INFO L231 Difference]: Finished difference. Result has 150 places, 326 transitions, 5169 flow [2022-11-23 03:35:12,676 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=4719, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5169, PETRI_PLACES=150, PETRI_TRANSITIONS=326} [2022-11-23 03:35:12,676 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 112 predicate places. [2022-11-23 03:35:12,676 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 326 transitions, 5169 flow [2022-11-23 03:35:12,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:12,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:35:12,677 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] [2022-11-23 03:35:12,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 03:35:12,677 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:35:12,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:12,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1549454906, now seen corresponding path program 7 times [2022-11-23 03:35:12,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:12,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530006998] [2022-11-23 03:35:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:12,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:35:12,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:12,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530006998] [2022-11-23 03:35:12,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530006998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:12,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:12,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:35:12,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232263348] [2022-11-23 03:35:12,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:12,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:35:12,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:12,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:35:12,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:35:12,926 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 606 [2022-11-23 03:35:12,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 326 transitions, 5169 flow. Second operand has 5 states, 5 states have (on average 271.2) internal successors, (1356), 5 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:12,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:35:12,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 606 [2022-11-23 03:35:12,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:35:15,875 INFO L130 PetriNetUnfolder]: 10194/14812 cut-off events. [2022-11-23 03:35:15,875 INFO L131 PetriNetUnfolder]: For 156873/157035 co-relation queries the response was YES. [2022-11-23 03:35:15,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73635 conditions, 14812 events. 10194/14812 cut-off events. For 156873/157035 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 87484 event pairs, 3581 based on Foata normal form. 28/13239 useless extension candidates. Maximal degree in co-relation 73454. Up to 10879 conditions per place. [2022-11-23 03:35:16,054 INFO L137 encePairwiseOnDemand]: 602/606 looper letters, 319 selfloop transitions, 16 changer transitions 18/354 dead transitions. [2022-11-23 03:35:16,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 354 transitions, 5966 flow [2022-11-23 03:35:16,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:35:16,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:35:16,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1410 transitions. [2022-11-23 03:35:16,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46534653465346537 [2022-11-23 03:35:16,057 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1410 transitions. [2022-11-23 03:35:16,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1410 transitions. [2022-11-23 03:35:16,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:35:16,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1410 transitions. [2022-11-23 03:35:16,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:16,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 606.0) internal successors, (3636), 6 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:16,060 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 606.0) internal successors, (3636), 6 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:16,060 INFO L175 Difference]: Start difference. First operand has 150 places, 326 transitions, 5169 flow. Second operand 5 states and 1410 transitions. [2022-11-23 03:35:16,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 354 transitions, 5966 flow [2022-11-23 03:35:18,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 354 transitions, 5920 flow, removed 17 selfloop flow, removed 2 redundant places. [2022-11-23 03:35:18,260 INFO L231 Difference]: Finished difference. Result has 153 places, 319 transitions, 5058 flow [2022-11-23 03:35:18,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=5125, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5058, PETRI_PLACES=153, PETRI_TRANSITIONS=319} [2022-11-23 03:35:18,261 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 115 predicate places. [2022-11-23 03:35:18,261 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 319 transitions, 5058 flow [2022-11-23 03:35:18,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 271.2) internal successors, (1356), 5 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:18,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:35:18,261 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] [2022-11-23 03:35:18,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 03:35:18,262 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:35:18,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:18,262 INFO L85 PathProgramCache]: Analyzing trace with hash -591918023, now seen corresponding path program 1 times [2022-11-23 03:35:18,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:18,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787546701] [2022-11-23 03:35:18,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:18,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:35:18,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:18,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787546701] [2022-11-23 03:35:18,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787546701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:18,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:18,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:35:18,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267894925] [2022-11-23 03:35:18,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:18,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:35:18,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:18,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:35:18,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:35:18,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 606 [2022-11-23 03:35:18,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 319 transitions, 5058 flow. Second operand has 5 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:18,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:35:18,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 606 [2022-11-23 03:35:18,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:35:21,616 INFO L130 PetriNetUnfolder]: 10548/15417 cut-off events. [2022-11-23 03:35:21,616 INFO L131 PetriNetUnfolder]: For 162437/162647 co-relation queries the response was YES. [2022-11-23 03:35:21,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76432 conditions, 15417 events. 10548/15417 cut-off events. For 162437/162647 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 92855 event pairs, 3120 based on Foata normal form. 67/13836 useless extension candidates. Maximal degree in co-relation 76315. Up to 7143 conditions per place. [2022-11-23 03:35:21,767 INFO L137 encePairwiseOnDemand]: 597/606 looper letters, 294 selfloop transitions, 100 changer transitions 7/402 dead transitions. [2022-11-23 03:35:21,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 402 transitions, 6413 flow [2022-11-23 03:35:21,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:35:21,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:35:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1978 transitions. [2022-11-23 03:35:21,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4662894860914663 [2022-11-23 03:35:21,772 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1978 transitions. [2022-11-23 03:35:21,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1978 transitions. [2022-11-23 03:35:21,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:35:21,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1978 transitions. [2022-11-23 03:35:21,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 282.57142857142856) internal successors, (1978), 7 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:21,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:21,780 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 606.0) internal successors, (4848), 8 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:21,781 INFO L175 Difference]: Start difference. First operand has 153 places, 319 transitions, 5058 flow. Second operand 7 states and 1978 transitions. [2022-11-23 03:35:21,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 402 transitions, 6413 flow [2022-11-23 03:35:23,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 402 transitions, 6375 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-11-23 03:35:23,771 INFO L231 Difference]: Finished difference. Result has 155 places, 323 transitions, 5353 flow [2022-11-23 03:35:23,771 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=5026, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5353, PETRI_PLACES=155, PETRI_TRANSITIONS=323} [2022-11-23 03:35:23,771 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 117 predicate places. [2022-11-23 03:35:23,771 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 323 transitions, 5353 flow [2022-11-23 03:35:23,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:23,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:35:23,772 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] [2022-11-23 03:35:23,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-23 03:35:23,772 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:35:23,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:23,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1491489541, now seen corresponding path program 2 times [2022-11-23 03:35:23,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:23,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428353386] [2022-11-23 03:35:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:23,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:35:24,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:24,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428353386] [2022-11-23 03:35:24,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428353386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:24,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:24,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:35:24,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76213590] [2022-11-23 03:35:24,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:24,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:35:24,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:24,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:35:24,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:35:24,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 606 [2022-11-23 03:35:24,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 323 transitions, 5353 flow. Second operand has 5 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:24,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:35:24,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 606 [2022-11-23 03:35:24,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:35:26,942 INFO L130 PetriNetUnfolder]: 10464/15244 cut-off events. [2022-11-23 03:35:26,942 INFO L131 PetriNetUnfolder]: For 173158/173368 co-relation queries the response was YES. [2022-11-23 03:35:27,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77688 conditions, 15244 events. 10464/15244 cut-off events. For 173158/173368 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 90683 event pairs, 2374 based on Foata normal form. 91/13699 useless extension candidates. Maximal degree in co-relation 76918. Up to 7030 conditions per place. [2022-11-23 03:35:27,114 INFO L137 encePairwiseOnDemand]: 597/606 looper letters, 285 selfloop transitions, 90 changer transitions 7/383 dead transitions. [2022-11-23 03:35:27,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 383 transitions, 6400 flow [2022-11-23 03:35:27,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:35:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:35:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1702 transitions. [2022-11-23 03:35:27,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4680968096809681 [2022-11-23 03:35:27,117 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1702 transitions. [2022-11-23 03:35:27,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1702 transitions. [2022-11-23 03:35:27,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:35:27,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1702 transitions. [2022-11-23 03:35:27,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.6666666666667) internal successors, (1702), 6 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:27,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:27,123 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 606.0) internal successors, (4242), 7 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:27,124 INFO L175 Difference]: Start difference. First operand has 155 places, 323 transitions, 5353 flow. Second operand 6 states and 1702 transitions. [2022-11-23 03:35:27,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 383 transitions, 6400 flow