./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-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_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/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_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/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_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/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 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 --- 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 04:11:51,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 04:11:51,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 04:11:51,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 04:11:51,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 04:11:51,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 04:11:51,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 04:11:51,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 04:11:51,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 04:11:51,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 04:11:51,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 04:11:51,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 04:11:51,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 04:11:51,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 04:11:51,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 04:11:51,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 04:11:51,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 04:11:51,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 04:11:51,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 04:11:51,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 04:11:51,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 04:11:51,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 04:11:51,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 04:11:51,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 04:11:51,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 04:11:51,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 04:11:51,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 04:11:51,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 04:11:51,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 04:11:51,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 04:11:51,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 04:11:51,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 04:11:51,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 04:11:51,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 04:11:51,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 04:11:51,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 04:11:51,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 04:11:51,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 04:11:51,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 04:11:51,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 04:11:51,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 04:11:51,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 04:11:51,254 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 04:11:51,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 04:11:51,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 04:11:51,256 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 04:11:51,257 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 04:11:51,257 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 04:11:51,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 04:11:51,258 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 04:11:51,259 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 04:11:51,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 04:11:51,259 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 04:11:51,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 04:11:51,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 04:11:51,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 04:11:51,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 04:11:51,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 04:11:51,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 04:11:51,262 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 04:11:51,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 04:11:51,262 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 04:11:51,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 04:11:51,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 04:11:51,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 04:11:51,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 04:11:51,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:11:51,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 04:11:51,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 04:11:51,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 04:11:51,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 04:11:51,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 04:11:51,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 04:11:51,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 04:11:51,267 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 04:11:51,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 04:11:51,268 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_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 [2022-11-23 04:11:51,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 04:11:51,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 04:11:51,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 04:11:51,636 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 04:11:51,638 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 04:11:51,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-23 04:11:55,112 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 04:11:55,352 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 04:11:55,353 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-23 04:11:55,369 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/data/fd6e49caa/8a8e57e1e13f4ce5bf5871fb6ca30775/FLAG8c2f41f76 [2022-11-23 04:11:55,393 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/data/fd6e49caa/8a8e57e1e13f4ce5bf5871fb6ca30775 [2022-11-23 04:11:55,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 04:11:55,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 04:11:55,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 04:11:55,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 04:11:55,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 04:11:55,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:11:55" (1/1) ... [2022-11-23 04:11:55,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9f2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55, skipping insertion in model container [2022-11-23 04:11:55,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:11:55" (1/1) ... [2022-11-23 04:11:55,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 04:11:55,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 04:11:55,795 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_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-23 04:11:55,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:11:55,823 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 04:11:55,889 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_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-23 04:11:55,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:11:55,942 INFO L208 MainTranslator]: Completed translation [2022-11-23 04:11:55,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55 WrapperNode [2022-11-23 04:11:55,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 04:11:55,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 04:11:55,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 04:11:55,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 04:11:55,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55" (1/1) ... [2022-11-23 04:11:55,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55" (1/1) ... [2022-11-23 04:11:56,040 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 574 [2022-11-23 04:11:56,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 04:11:56,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 04:11:56,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 04:11:56,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 04:11:56,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55" (1/1) ... [2022-11-23 04:11:56,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55" (1/1) ... [2022-11-23 04:11:56,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55" (1/1) ... [2022-11-23 04:11:56,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55" (1/1) ... [2022-11-23 04:11:56,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55" (1/1) ... [2022-11-23 04:11:56,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55" (1/1) ... [2022-11-23 04:11:56,093 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55" (1/1) ... [2022-11-23 04:11:56,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55" (1/1) ... [2022-11-23 04:11:56,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 04:11:56,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 04:11:56,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 04:11:56,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 04:11:56,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55" (1/1) ... [2022-11-23 04:11:56,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:11:56,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:11:56,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 04:11:56,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 04:11:56,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 04:11:56,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 04:11:56,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 04:11:56,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 04:11:56,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 04:11:56,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 04:11:56,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 04:11:56,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 04:11:56,246 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 04:11:56,246 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 04:11:56,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 04:11:56,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 04:11:56,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 04:11:56,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 04:11:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 04:11:56,250 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 04:11:56,521 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 04:11:56,524 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 04:11:57,880 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 04:11:57,905 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 04:11:57,905 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-23 04:11:57,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:11:57 BoogieIcfgContainer [2022-11-23 04:11:57,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 04:11:57,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 04:11:57,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 04:11:57,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 04:11:57,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:11:55" (1/3) ... [2022-11-23 04:11:57,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc30056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:11:57, skipping insertion in model container [2022-11-23 04:11:57,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:11:55" (2/3) ... [2022-11-23 04:11:57,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc30056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:11:57, skipping insertion in model container [2022-11-23 04:11:57,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:11:57" (3/3) ... [2022-11-23 04:11:57,924 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-11-23 04:11:57,938 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 04:11:57,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 04:11:57,950 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 04:11:57,950 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 04:11:58,190 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 04:11:58,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 698 places, 761 transitions, 1546 flow [2022-11-23 04:11:58,775 INFO L130 PetriNetUnfolder]: 73/758 cut-off events. [2022-11-23 04:11:58,775 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 04:11:58,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 758 events. 73/758 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2695 event pairs, 0 based on Foata normal form. 0/684 useless extension candidates. Maximal degree in co-relation 559. Up to 2 conditions per place. [2022-11-23 04:11:58,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 698 places, 761 transitions, 1546 flow [2022-11-23 04:11:58,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 684 places, 747 transitions, 1512 flow [2022-11-23 04:11:58,831 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 04:11:58,857 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 684 places, 747 transitions, 1512 flow [2022-11-23 04:11:58,862 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 684 places, 747 transitions, 1512 flow [2022-11-23 04:11:58,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 684 places, 747 transitions, 1512 flow [2022-11-23 04:11:59,254 INFO L130 PetriNetUnfolder]: 73/747 cut-off events. [2022-11-23 04:11:59,254 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 04:11:59,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 747 events. 73/747 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2688 event pairs, 0 based on Foata normal form. 0/674 useless extension candidates. Maximal degree in co-relation 559. Up to 2 conditions per place. [2022-11-23 04:11:59,342 INFO L119 LiptonReduction]: Number of co-enabled transitions 187758 [2022-11-23 04:12:44,020 INFO L134 LiptonReduction]: Checked pairs total: 175151 [2022-11-23 04:12:44,020 INFO L136 LiptonReduction]: Total number of compositions: 938 [2022-11-23 04:12:44,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 04:12:44,052 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;@7024bc8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 04:12:44,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 04:12:44,067 INFO L130 PetriNetUnfolder]: 14/49 cut-off events. [2022-11-23 04:12:44,067 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 04:12:44,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:44,069 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 04:12:44,069 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 04:12:44,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash 334132079, now seen corresponding path program 1 times [2022-11-23 04:12:44,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:44,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303108408] [2022-11-23 04:12:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:44,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:44,799 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 04:12:44,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:44,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303108408] [2022-11-23 04:12:44,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303108408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:44,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:44,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:12:44,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772754946] [2022-11-23 04:12:44,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:44,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:12:44,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:44,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:12:44,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:12:44,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 705 out of 1699 [2022-11-23 04:12:44,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 711.3333333333334) internal successors, (2134), 3 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states 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 04:12:44,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:44,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 705 of 1699 [2022-11-23 04:12:44,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:46,182 INFO L130 PetriNetUnfolder]: 2776/3671 cut-off events. [2022-11-23 04:12:46,183 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2022-11-23 04:12:46,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7603 conditions, 3671 events. 2776/3671 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12610 event pairs, 1657 based on Foata normal form. 0/2552 useless extension candidates. Maximal degree in co-relation 7072. Up to 3669 conditions per place. [2022-11-23 04:12:46,211 INFO L137 encePairwiseOnDemand]: 1691/1699 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2022-11-23 04:12:46,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 226 flow [2022-11-23 04:12:46,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:12:46,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:12:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2171 transitions. [2022-11-23 04:12:46,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4259368255836767 [2022-11-23 04:12:46,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2171 transitions. [2022-11-23 04:12:46,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2171 transitions. [2022-11-23 04:12:46,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:46,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2171 transitions. [2022-11-23 04:12:46,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 723.6666666666666) internal successors, (2171), 3 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states 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 04:12:46,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states 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 04:12:46,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states 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 04:12:46,305 INFO L175 Difference]: Start difference. First operand has 46 places, 50 transitions, 118 flow. Second operand 3 states and 2171 transitions. [2022-11-23 04:12:46,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 226 flow [2022-11-23 04:12:46,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 214 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-23 04:12:46,325 INFO L231 Difference]: Finished difference. Result has 43 places, 52 transitions, 136 flow [2022-11-23 04:12:46,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=43, PETRI_TRANSITIONS=52} [2022-11-23 04:12:46,333 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-11-23 04:12:46,334 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 52 transitions, 136 flow [2022-11-23 04:12:46,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 711.3333333333334) internal successors, (2134), 3 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states 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 04:12:46,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:46,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:46,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 04:12:46,339 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 04:12:46,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:46,353 INFO L85 PathProgramCache]: Analyzing trace with hash 399710625, now seen corresponding path program 1 times [2022-11-23 04:12:46,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:46,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207807991] [2022-11-23 04:12:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:46,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 04:12:46,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:46,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207807991] [2022-11-23 04:12:46,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207807991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:12:46,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738554702] [2022-11-23 04:12:46,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:46,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:46,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:46,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:12:46,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 04:12:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:46,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 04:12:46,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:12:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 04:12:47,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:12:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 04:12:47,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738554702] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:12:47,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:12:47,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-11-23 04:12:47,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487564764] [2022-11-23 04:12:47,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:12:47,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 04:12:47,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:47,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 04:12:47,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-11-23 04:12:47,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 699 out of 1699 [2022-11-23 04:12:47,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 52 transitions, 136 flow. Second operand has 8 states, 8 states have (on average 702.75) internal successors, (5622), 8 states have internal predecessors, (5622), 0 states have call successors, (0), 0 states 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 04:12:47,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:47,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 699 of 1699 [2022-11-23 04:12:47,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:48,359 INFO L130 PetriNetUnfolder]: 2776/3680 cut-off events. [2022-11-23 04:12:48,359 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-23 04:12:48,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7497 conditions, 3680 events. 2776/3680 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12619 event pairs, 1657 based on Foata normal form. 6/2569 useless extension candidates. Maximal degree in co-relation 7448. Up to 3669 conditions per place. [2022-11-23 04:12:48,382 INFO L137 encePairwiseOnDemand]: 1692/1699 looper letters, 46 selfloop transitions, 15 changer transitions 0/61 dead transitions. [2022-11-23 04:12:48,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 294 flow [2022-11-23 04:12:48,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 04:12:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 04:12:48,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4264 transitions. [2022-11-23 04:12:48,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4182852658426525 [2022-11-23 04:12:48,396 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4264 transitions. [2022-11-23 04:12:48,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4264 transitions. [2022-11-23 04:12:48,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:48,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4264 transitions. [2022-11-23 04:12:48,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 710.6666666666666) internal successors, (4264), 6 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states 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 04:12:48,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1699.0) internal successors, (11893), 7 states have internal predecessors, (11893), 0 states have call successors, (0), 0 states 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 04:12:48,441 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1699.0) internal successors, (11893), 7 states have internal predecessors, (11893), 0 states have call successors, (0), 0 states 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 04:12:48,442 INFO L175 Difference]: Start difference. First operand has 43 places, 52 transitions, 136 flow. Second operand 6 states and 4264 transitions. [2022-11-23 04:12:48,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 294 flow [2022-11-23 04:12:48,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:12:48,447 INFO L231 Difference]: Finished difference. Result has 50 places, 61 transitions, 226 flow [2022-11-23 04:12:48,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=50, PETRI_TRANSITIONS=61} [2022-11-23 04:12:48,448 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2022-11-23 04:12:48,449 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 61 transitions, 226 flow [2022-11-23 04:12:48,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 702.75) internal successors, (5622), 8 states have internal predecessors, (5622), 0 states have call successors, (0), 0 states 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 04:12:48,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:48,453 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:48,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 04:12:48,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:48,660 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 04:12:48,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1943664715, now seen corresponding path program 2 times [2022-11-23 04:12:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:48,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409035093] [2022-11-23 04:12:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:48,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 04:12:48,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:48,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409035093] [2022-11-23 04:12:48,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409035093] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:12:48,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770007057] [2022-11-23 04:12:48,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 04:12:48,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:48,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:48,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:12:48,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 04:12:49,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 04:12:49,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:12:49,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 04:12:49,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:12:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 04:12:50,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:12:50,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770007057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:50,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 04:12:50,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-23 04:12:50,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995896968] [2022-11-23 04:12:50,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:50,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:12:50,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:12:50,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-23 04:12:51,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 683 out of 1699 [2022-11-23 04:12:51,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 61 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 687.4) internal successors, (3437), 5 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states 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 04:12:51,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:51,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 683 of 1699 [2022-11-23 04:12:51,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:53,882 INFO L130 PetriNetUnfolder]: 3116/4199 cut-off events. [2022-11-23 04:12:53,882 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-23 04:12:53,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8577 conditions, 4199 events. 3116/4199 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16024 event pairs, 1657 based on Foata normal form. 1/2930 useless extension candidates. Maximal degree in co-relation 8489. Up to 3599 conditions per place. [2022-11-23 04:12:53,909 INFO L137 encePairwiseOnDemand]: 1695/1699 looper letters, 99 selfloop transitions, 2 changer transitions 7/108 dead transitions. [2022-11-23 04:12:53,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 108 transitions, 548 flow [2022-11-23 04:12:53,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 04:12:53,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 04:12:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3512 transitions. [2022-11-23 04:12:53,922 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41341965862271923 [2022-11-23 04:12:53,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3512 transitions. [2022-11-23 04:12:53,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3512 transitions. [2022-11-23 04:12:53,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:53,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3512 transitions. [2022-11-23 04:12:53,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 702.4) internal successors, (3512), 5 states have internal predecessors, (3512), 0 states have call successors, (0), 0 states 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 04:12:53,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states 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 04:12:53,956 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states 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 04:12:53,956 INFO L175 Difference]: Start difference. First operand has 50 places, 61 transitions, 226 flow. Second operand 5 states and 3512 transitions. [2022-11-23 04:12:53,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 108 transitions, 548 flow [2022-11-23 04:12:53,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 108 transitions, 524 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-23 04:12:53,961 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 217 flow [2022-11-23 04:12:53,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2022-11-23 04:12:53,965 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2022-11-23 04:12:53,965 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 217 flow [2022-11-23 04:12:53,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 687.4) internal successors, (3437), 5 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states 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 04:12:53,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:53,986 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:53,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 04:12:54,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:54,193 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 04:12:54,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:54,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1212285125, now seen corresponding path program 3 times [2022-11-23 04:12:54,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:54,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762376765] [2022-11-23 04:12:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:54,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 04:12:54,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:54,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762376765] [2022-11-23 04:12:54,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762376765] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:12:54,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140038708] [2022-11-23 04:12:54,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 04:12:54,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:54,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:54,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:12:54,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 04:12:54,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 04:12:54,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:12:54,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 04:12:54,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:12:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 04:12:56,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:12:56,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140038708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:56,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 04:12:56,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-23 04:12:56,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123004060] [2022-11-23 04:12:56,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:56,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:12:56,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:56,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:12:56,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-23 04:12:56,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 683 out of 1699 [2022-11-23 04:12:56,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 687.4) internal successors, (3437), 5 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states 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 04:12:56,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:56,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 683 of 1699 [2022-11-23 04:12:56,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:58,984 INFO L130 PetriNetUnfolder]: 3316/4549 cut-off events. [2022-11-23 04:12:58,984 INFO L131 PetriNetUnfolder]: For 711/711 co-relation queries the response was YES. [2022-11-23 04:12:58,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9787 conditions, 4549 events. 3316/4549 cut-off events. For 711/711 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18284 event pairs, 1919 based on Foata normal form. 1/3672 useless extension candidates. Maximal degree in co-relation 9755. Up to 4051 conditions per place. [2022-11-23 04:12:59,019 INFO L137 encePairwiseOnDemand]: 1695/1699 looper letters, 104 selfloop transitions, 3 changer transitions 7/114 dead transitions. [2022-11-23 04:12:59,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 114 transitions, 571 flow [2022-11-23 04:12:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 04:12:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 04:12:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3517 transitions. [2022-11-23 04:12:59,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4140082401412596 [2022-11-23 04:12:59,032 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3517 transitions. [2022-11-23 04:12:59,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3517 transitions. [2022-11-23 04:12:59,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:59,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3517 transitions. [2022-11-23 04:12:59,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 703.4) internal successors, (3517), 5 states have internal predecessors, (3517), 0 states have call successors, (0), 0 states 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 04:12:59,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states 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 04:12:59,061 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states 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 04:12:59,061 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 217 flow. Second operand 5 states and 3517 transitions. [2022-11-23 04:12:59,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 114 transitions, 571 flow [2022-11-23 04:12:59,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 114 transitions, 562 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-23 04:12:59,066 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 234 flow [2022-11-23 04:12:59,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2022-11-23 04:12:59,068 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2022-11-23 04:12:59,068 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 234 flow [2022-11-23 04:12:59,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 687.4) internal successors, (3437), 5 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states 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 04:12:59,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:59,070 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:59,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 04:12:59,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:59,275 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 04:12:59,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:59,276 INFO L85 PathProgramCache]: Analyzing trace with hash 790056833, now seen corresponding path program 4 times [2022-11-23 04:12:59,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:59,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523553156] [2022-11-23 04:12:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:59,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 04:12:59,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:59,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523553156] [2022-11-23 04:12:59,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523553156] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:12:59,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442148391] [2022-11-23 04:12:59,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 04:12:59,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:12:59,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:59,566 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:12:59,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 04:12:59,934 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 04:12:59,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:12:59,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 04:12:59,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:13:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 04:13:00,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:13:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 04:13:00,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442148391] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:13:00,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:13:00,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2022-11-23 04:13:00,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215868933] [2022-11-23 04:13:00,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:13:00,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 04:13:00,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 04:13:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-23 04:13:00,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 699 out of 1699 [2022-11-23 04:13:00,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 234 flow. Second operand has 17 states, 17 states have (on average 701.2941176470588) internal successors, (11922), 17 states have internal predecessors, (11922), 0 states have call successors, (0), 0 states 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 04:13:00,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:13:00,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 699 of 1699 [2022-11-23 04:13:00,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:13:02,184 INFO L130 PetriNetUnfolder]: 3315/4544 cut-off events. [2022-11-23 04:13:02,184 INFO L131 PetriNetUnfolder]: For 1854/1854 co-relation queries the response was YES. [2022-11-23 04:13:02,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10297 conditions, 4544 events. 3315/4544 cut-off events. For 1854/1854 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17982 event pairs, 2136 based on Foata normal form. 1/3667 useless extension candidates. Maximal degree in co-relation 10263. Up to 4530 conditions per place. [2022-11-23 04:13:02,218 INFO L137 encePairwiseOnDemand]: 1692/1699 looper letters, 48 selfloop transitions, 18 changer transitions 0/66 dead transitions. [2022-11-23 04:13:02,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 384 flow [2022-11-23 04:13:02,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 04:13:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 04:13:02,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4960 transitions. [2022-11-23 04:13:02,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4170520474228538 [2022-11-23 04:13:02,237 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4960 transitions. [2022-11-23 04:13:02,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4960 transitions. [2022-11-23 04:13:02,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:13:02,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4960 transitions. [2022-11-23 04:13:02,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 708.5714285714286) internal successors, (4960), 7 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states 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 04:13:02,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1699.0) internal successors, (13592), 8 states have internal predecessors, (13592), 0 states have call successors, (0), 0 states 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 04:13:02,286 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1699.0) internal successors, (13592), 8 states have internal predecessors, (13592), 0 states have call successors, (0), 0 states 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 04:13:02,287 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 234 flow. Second operand 7 states and 4960 transitions. [2022-11-23 04:13:02,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 384 flow [2022-11-23 04:13:02,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 378 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-23 04:13:02,292 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 296 flow [2022-11-23 04:13:02,292 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=296, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2022-11-23 04:13:02,293 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2022-11-23 04:13:02,294 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 296 flow [2022-11-23 04:13:02,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 701.2941176470588) internal successors, (11922), 17 states have internal predecessors, (11922), 0 states have call successors, (0), 0 states 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 04:13:02,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:13:02,299 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:02,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 04:13:02,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:13:02,506 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 04:13:02,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash -863830801, now seen corresponding path program 5 times [2022-11-23 04:13:02,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:02,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975539014] [2022-11-23 04:13:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:02,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 04:13:04,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:04,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975539014] [2022-11-23 04:13:04,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975539014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:04,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:04,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 04:13:04,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562206621] [2022-11-23 04:13:04,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:04,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:13:04,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:04,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:13:04,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:13:04,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 679 out of 1699 [2022-11-23 04:13:04,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 683.4) internal successors, (3417), 5 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states 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 04:13:04,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:13:04,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 679 of 1699 [2022-11-23 04:13:04,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:13:06,538 INFO L130 PetriNetUnfolder]: 4015/5649 cut-off events. [2022-11-23 04:13:06,539 INFO L131 PetriNetUnfolder]: For 1203/1203 co-relation queries the response was YES. [2022-11-23 04:13:06,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12369 conditions, 5649 events. 4015/5649 cut-off events. For 1203/1203 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 25520 event pairs, 2135 based on Foata normal form. 1/4558 useless extension candidates. Maximal degree in co-relation 12256. Up to 4204 conditions per place. [2022-11-23 04:13:06,584 INFO L137 encePairwiseOnDemand]: 1687/1699 looper letters, 127 selfloop transitions, 14 changer transitions 4/145 dead transitions. [2022-11-23 04:13:06,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 145 transitions, 775 flow [2022-11-23 04:13:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 04:13:06,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 04:13:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3523 transitions. [2022-11-23 04:13:06,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41471453796350793 [2022-11-23 04:13:06,595 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3523 transitions. [2022-11-23 04:13:06,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3523 transitions. [2022-11-23 04:13:06,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:13:06,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3523 transitions. [2022-11-23 04:13:06,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 704.6) internal successors, (3523), 5 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states 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 04:13:06,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states 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 04:13:06,627 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states 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 04:13:06,627 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 296 flow. Second operand 5 states and 3523 transitions. [2022-11-23 04:13:06,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 145 transitions, 775 flow [2022-11-23 04:13:06,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 145 transitions, 739 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-23 04:13:06,639 INFO L231 Difference]: Finished difference. Result has 67 places, 78 transitions, 376 flow [2022-11-23 04:13:06,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=67, PETRI_TRANSITIONS=78} [2022-11-23 04:13:06,642 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2022-11-23 04:13:06,643 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 78 transitions, 376 flow [2022-11-23 04:13:06,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 683.4) internal successors, (3417), 5 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states 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 04:13:06,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:13:06,645 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:06,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 04:13:06,645 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 04:13:06,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash 755652597, now seen corresponding path program 6 times [2022-11-23 04:13:06,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:06,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327764707] [2022-11-23 04:13:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:06,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 04:13:07,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:07,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327764707] [2022-11-23 04:13:07,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327764707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:07,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:07,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 04:13:07,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236871038] [2022-11-23 04:13:07,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:07,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:13:07,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:07,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:13:07,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:13:08,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 679 out of 1699 [2022-11-23 04:13:08,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 78 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 683.4) internal successors, (3417), 5 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states 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 04:13:08,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:13:08,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 679 of 1699 [2022-11-23 04:13:08,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:13:10,811 INFO L130 PetriNetUnfolder]: 7430/10294 cut-off events. [2022-11-23 04:13:10,811 INFO L131 PetriNetUnfolder]: For 6866/6866 co-relation queries the response was YES. [2022-11-23 04:13:10,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25642 conditions, 10294 events. 7430/10294 cut-off events. For 6866/6866 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 50243 event pairs, 1983 based on Foata normal form. 1/8863 useless extension candidates. Maximal degree in co-relation 25543. Up to 4992 conditions per place. [2022-11-23 04:13:10,882 INFO L137 encePairwiseOnDemand]: 1684/1699 looper letters, 134 selfloop transitions, 43 changer transitions 3/180 dead transitions. [2022-11-23 04:13:10,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 180 transitions, 1070 flow [2022-11-23 04:13:10,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 04:13:10,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 04:13:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3545 transitions. [2022-11-23 04:13:10,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41730429664508534 [2022-11-23 04:13:10,892 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3545 transitions. [2022-11-23 04:13:10,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3545 transitions. [2022-11-23 04:13:10,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:13:10,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3545 transitions. [2022-11-23 04:13:10,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 709.0) internal successors, (3545), 5 states have internal predecessors, (3545), 0 states have call successors, (0), 0 states 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 04:13:10,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states 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 04:13:10,913 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states 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 04:13:10,913 INFO L175 Difference]: Start difference. First operand has 67 places, 78 transitions, 376 flow. Second operand 5 states and 3545 transitions. [2022-11-23 04:13:10,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 180 transitions, 1070 flow [2022-11-23 04:13:10,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 180 transitions, 1059 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-23 04:13:10,935 INFO L231 Difference]: Finished difference. Result has 73 places, 108 transitions, 715 flow [2022-11-23 04:13:10,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=715, PETRI_PLACES=73, PETRI_TRANSITIONS=108} [2022-11-23 04:13:10,936 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2022-11-23 04:13:10,936 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 108 transitions, 715 flow [2022-11-23 04:13:10,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 683.4) internal successors, (3417), 5 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states 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 04:13:10,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:13:10,937 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:10,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 04:13:10,938 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 04:13:10,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1867495533, now seen corresponding path program 7 times [2022-11-23 04:13:10,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:10,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988439022] [2022-11-23 04:13:10,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:10,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 04:13:12,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:12,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988439022] [2022-11-23 04:13:12,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988439022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:12,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:12,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 04:13:12,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844449146] [2022-11-23 04:13:12,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:12,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:13:12,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:12,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:13:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:13:12,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 679 out of 1699 [2022-11-23 04:13:12,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 108 transitions, 715 flow. Second operand has 5 states, 5 states have (on average 683.4) internal successors, (3417), 5 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states 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 04:13:12,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:13:12,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 679 of 1699 [2022-11-23 04:13:12,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:13:15,278 INFO L130 PetriNetUnfolder]: 7801/10846 cut-off events. [2022-11-23 04:13:15,278 INFO L131 PetriNetUnfolder]: For 16857/16857 co-relation queries the response was YES. [2022-11-23 04:13:15,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32642 conditions, 10846 events. 7801/10846 cut-off events. For 16857/16857 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 53821 event pairs, 3677 based on Foata normal form. 1/9273 useless extension candidates. Maximal degree in co-relation 32540. Up to 9134 conditions per place. [2022-11-23 04:13:15,346 INFO L137 encePairwiseOnDemand]: 1688/1699 looper letters, 174 selfloop transitions, 18 changer transitions 3/195 dead transitions. [2022-11-23 04:13:15,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 195 transitions, 1497 flow [2022-11-23 04:13:15,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 04:13:15,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 04:13:15,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3516 transitions. [2022-11-23 04:13:15,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4138905238375515 [2022-11-23 04:13:15,355 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3516 transitions. [2022-11-23 04:13:15,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3516 transitions. [2022-11-23 04:13:15,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:13:15,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3516 transitions. [2022-11-23 04:13:15,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 703.2) internal successors, (3516), 5 states have internal predecessors, (3516), 0 states have call successors, (0), 0 states 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 04:13:15,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states 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 04:13:15,377 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states 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 04:13:15,377 INFO L175 Difference]: Start difference. First operand has 73 places, 108 transitions, 715 flow. Second operand 5 states and 3516 transitions. [2022-11-23 04:13:15,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 195 transitions, 1497 flow [2022-11-23 04:13:15,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 195 transitions, 1479 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-11-23 04:13:15,434 INFO L231 Difference]: Finished difference. Result has 80 places, 123 transitions, 888 flow [2022-11-23 04:13:15,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=888, PETRI_PLACES=80, PETRI_TRANSITIONS=123} [2022-11-23 04:13:15,435 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2022-11-23 04:13:15,436 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 123 transitions, 888 flow [2022-11-23 04:13:15,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 683.4) internal successors, (3417), 5 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states 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 04:13:15,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:13:15,437 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:15,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 04:13:15,437 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 04:13:15,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:15,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1406574851, now seen corresponding path program 8 times [2022-11-23 04:13:15,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:15,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625320014] [2022-11-23 04:13:15,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:15,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 04:13:16,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:16,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625320014] [2022-11-23 04:13:16,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625320014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:16,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:16,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 04:13:16,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922841146] [2022-11-23 04:13:16,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:16,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:13:16,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:16,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:13:16,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:13:16,741 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 678 out of 1699 [2022-11-23 04:13:16,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 123 transitions, 888 flow. Second operand has 5 states, 5 states have (on average 682.4) internal successors, (3412), 5 states have internal predecessors, (3412), 0 states have call successors, (0), 0 states 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 04:13:16,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:13:16,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 678 of 1699 [2022-11-23 04:13:16,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:13:20,620 INFO L130 PetriNetUnfolder]: 8260/11556 cut-off events. [2022-11-23 04:13:20,620 INFO L131 PetriNetUnfolder]: For 25223/25223 co-relation queries the response was YES. [2022-11-23 04:13:20,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39650 conditions, 11556 events. 8260/11556 cut-off events. For 25223/25223 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 58503 event pairs, 3402 based on Foata normal form. 1/9913 useless extension candidates. Maximal degree in co-relation 39544. Up to 8859 conditions per place. [2022-11-23 04:13:20,715 INFO L137 encePairwiseOnDemand]: 1687/1699 looper letters, 182 selfloop transitions, 35 changer transitions 4/221 dead transitions. [2022-11-23 04:13:20,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 221 transitions, 1814 flow [2022-11-23 04:13:20,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 04:13:20,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 04:13:20,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3528 transitions. [2022-11-23 04:13:20,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4153031194820483 [2022-11-23 04:13:20,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3528 transitions. [2022-11-23 04:13:20,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3528 transitions. [2022-11-23 04:13:20,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:13:20,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3528 transitions. [2022-11-23 04:13:20,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 705.6) internal successors, (3528), 5 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states 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 04:13:20,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states 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 04:13:20,753 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states 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 04:13:20,753 INFO L175 Difference]: Start difference. First operand has 80 places, 123 transitions, 888 flow. Second operand 5 states and 3528 transitions. [2022-11-23 04:13:20,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 221 transitions, 1814 flow [2022-11-23 04:13:20,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 221 transitions, 1796 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-23 04:13:20,879 INFO L231 Difference]: Finished difference. Result has 86 places, 142 transitions, 1216 flow [2022-11-23 04:13:20,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1216, PETRI_PLACES=86, PETRI_TRANSITIONS=142} [2022-11-23 04:13:20,881 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2022-11-23 04:13:20,881 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 142 transitions, 1216 flow [2022-11-23 04:13:20,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 682.4) internal successors, (3412), 5 states have internal predecessors, (3412), 0 states have call successors, (0), 0 states 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 04:13:20,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:13:20,883 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:20,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 04:13:20,883 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 04:13:20,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:20,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1064253672, now seen corresponding path program 1 times [2022-11-23 04:13:20,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:20,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218644900] [2022-11-23 04:13:20,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:20,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 04:13:21,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:21,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218644900] [2022-11-23 04:13:21,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218644900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:21,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:21,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:13:21,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297114768] [2022-11-23 04:13:21,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:21,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:13:21,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:21,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:13:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:21,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 710 out of 1699 [2022-11-23 04:13:21,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 142 transitions, 1216 flow. Second operand has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states 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 04:13:21,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:13:21,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 710 of 1699 [2022-11-23 04:13:21,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:13:25,564 INFO L130 PetriNetUnfolder]: 11299/15796 cut-off events. [2022-11-23 04:13:25,564 INFO L131 PetriNetUnfolder]: For 47158/47158 co-relation queries the response was YES. [2022-11-23 04:13:25,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55606 conditions, 15796 events. 11299/15796 cut-off events. For 47158/47158 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 81813 event pairs, 4576 based on Foata normal form. 290/13674 useless extension candidates. Maximal degree in co-relation 55497. Up to 10443 conditions per place. [2022-11-23 04:13:25,706 INFO L137 encePairwiseOnDemand]: 1694/1699 looper letters, 184 selfloop transitions, 8 changer transitions 0/192 dead transitions. [2022-11-23 04:13:25,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 192 transitions, 1928 flow [2022-11-23 04:13:25,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:13:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:13:25,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2210 transitions. [2022-11-23 04:13:25,712 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4335883853247008 [2022-11-23 04:13:25,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2210 transitions. [2022-11-23 04:13:25,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2210 transitions. [2022-11-23 04:13:25,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:13:25,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2210 transitions. [2022-11-23 04:13:25,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 736.6666666666666) internal successors, (2210), 3 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states 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 04:13:25,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states 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 04:13:25,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states 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 04:13:25,728 INFO L175 Difference]: Start difference. First operand has 86 places, 142 transitions, 1216 flow. Second operand 3 states and 2210 transitions. [2022-11-23 04:13:25,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 192 transitions, 1928 flow [2022-11-23 04:13:26,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 192 transitions, 1910 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-11-23 04:13:26,064 INFO L231 Difference]: Finished difference. Result has 88 places, 139 transitions, 1179 flow [2022-11-23 04:13:26,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1179, PETRI_PLACES=88, PETRI_TRANSITIONS=139} [2022-11-23 04:13:26,065 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 42 predicate places. [2022-11-23 04:13:26,065 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 139 transitions, 1179 flow [2022-11-23 04:13:26,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states 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 04:13:26,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:13:26,066 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:26,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 04:13:26,066 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 04:13:26,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:26,067 INFO L85 PathProgramCache]: Analyzing trace with hash 911826559, now seen corresponding path program 1 times [2022-11-23 04:13:26,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:26,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615005426] [2022-11-23 04:13:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:26,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 04:13:26,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:26,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615005426] [2022-11-23 04:13:26,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615005426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:26,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:26,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:13:26,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312052166] [2022-11-23 04:13:26,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:26,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:13:26,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:13:26,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:26,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 710 out of 1699 [2022-11-23 04:13:26,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 139 transitions, 1179 flow. Second operand has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states 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 04:13:26,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:13:26,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 710 of 1699 [2022-11-23 04:13:26,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:13:32,509 INFO L130 PetriNetUnfolder]: 16301/22678 cut-off events. [2022-11-23 04:13:32,510 INFO L131 PetriNetUnfolder]: For 62335/62335 co-relation queries the response was YES. [2022-11-23 04:13:32,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80976 conditions, 22678 events. 16301/22678 cut-off events. For 62335/62335 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 123940 event pairs, 6616 based on Foata normal form. 618/19708 useless extension candidates. Maximal degree in co-relation 80866. Up to 16119 conditions per place. [2022-11-23 04:13:32,809 INFO L137 encePairwiseOnDemand]: 1694/1699 looper letters, 189 selfloop transitions, 7 changer transitions 0/196 dead transitions. [2022-11-23 04:13:32,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 196 transitions, 1989 flow [2022-11-23 04:13:32,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:13:32,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:13:32,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2210 transitions. [2022-11-23 04:13:32,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4335883853247008 [2022-11-23 04:13:32,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2210 transitions. [2022-11-23 04:13:32,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2210 transitions. [2022-11-23 04:13:32,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:13:32,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2210 transitions. [2022-11-23 04:13:32,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 736.6666666666666) internal successors, (2210), 3 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states 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 04:13:32,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states 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 04:13:32,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states 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 04:13:32,837 INFO L175 Difference]: Start difference. First operand has 88 places, 139 transitions, 1179 flow. Second operand 3 states and 2210 transitions. [2022-11-23 04:13:32,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 196 transitions, 1989 flow [2022-11-23 04:13:33,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 196 transitions, 1974 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:13:33,234 INFO L231 Difference]: Finished difference. Result has 90 places, 137 transitions, 1166 flow [2022-11-23 04:13:33,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1166, PETRI_PLACES=90, PETRI_TRANSITIONS=137} [2022-11-23 04:13:33,235 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 44 predicate places. [2022-11-23 04:13:33,236 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 137 transitions, 1166 flow [2022-11-23 04:13:33,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states 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 04:13:33,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:13:33,237 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:33,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 04:13:33,238 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 04:13:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:33,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1963638922, now seen corresponding path program 1 times [2022-11-23 04:13:33,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:33,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509078739] [2022-11-23 04:13:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:33,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 04:13:33,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:33,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509078739] [2022-11-23 04:13:33,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509078739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:33,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:33,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:13:33,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524858405] [2022-11-23 04:13:33,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:33,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:13:33,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:33,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:13:33,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:33,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 710 out of 1699 [2022-11-23 04:13:33,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 137 transitions, 1166 flow. Second operand has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states 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 04:13:33,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:13:33,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 710 of 1699 [2022-11-23 04:13:33,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:13:41,503 INFO L130 PetriNetUnfolder]: 20740/28761 cut-off events. [2022-11-23 04:13:41,503 INFO L131 PetriNetUnfolder]: For 78938/78938 co-relation queries the response was YES. [2022-11-23 04:13:41,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104891 conditions, 28761 events. 20740/28761 cut-off events. For 78938/78938 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 159195 event pairs, 9413 based on Foata normal form. 0/24823 useless extension candidates. Maximal degree in co-relation 104780. Up to 23178 conditions per place. [2022-11-23 04:13:41,802 INFO L137 encePairwiseOnDemand]: 1696/1699 looper letters, 180 selfloop transitions, 9 changer transitions 0/189 dead transitions. [2022-11-23 04:13:41,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 189 transitions, 1900 flow [2022-11-23 04:13:41,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:13:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:13:41,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2212 transitions. [2022-11-23 04:13:41,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43398077300372767 [2022-11-23 04:13:41,810 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2212 transitions. [2022-11-23 04:13:41,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2212 transitions. [2022-11-23 04:13:41,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:13:41,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2212 transitions. [2022-11-23 04:13:41,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 737.3333333333334) internal successors, (2212), 3 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states 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 04:13:41,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states 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 04:13:41,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states 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 04:13:41,830 INFO L175 Difference]: Start difference. First operand has 90 places, 137 transitions, 1166 flow. Second operand 3 states and 2212 transitions. [2022-11-23 04:13:41,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 189 transitions, 1900 flow [2022-11-23 04:13:42,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 189 transitions, 1889 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:13:42,197 INFO L231 Difference]: Finished difference. Result has 92 places, 136 transitions, 1184 flow [2022-11-23 04:13:42,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1184, PETRI_PLACES=92, PETRI_TRANSITIONS=136} [2022-11-23 04:13:42,198 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2022-11-23 04:13:42,198 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 136 transitions, 1184 flow [2022-11-23 04:13:42,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states 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 04:13:42,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:13:42,200 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:42,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 04:13:42,200 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 04:13:42,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:42,201 INFO L85 PathProgramCache]: Analyzing trace with hash 831158832, now seen corresponding path program 1 times [2022-11-23 04:13:42,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:42,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980968407] [2022-11-23 04:13:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:42,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 04:13:43,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:43,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980968407] [2022-11-23 04:13:43,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980968407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:13:43,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610559816] [2022-11-23 04:13:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:43,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:13:43,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:13:43,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:13:43,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 04:13:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:43,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 04:13:43,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:13:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 04:13:43,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:13:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 04:13:43,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610559816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:13:43,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:13:43,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-23 04:13:43,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876046142] [2022-11-23 04:13:43,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:13:43,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 04:13:43,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:43,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 04:13:43,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 04:13:43,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 704 out of 1699 [2022-11-23 04:13:43,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 136 transitions, 1184 flow. Second operand has 6 states, 6 states have (on average 710.6666666666666) internal successors, (4264), 6 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states 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 04:13:43,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:13:43,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 704 of 1699 [2022-11-23 04:13:43,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:13:51,368 INFO L130 PetriNetUnfolder]: 21230/29519 cut-off events. [2022-11-23 04:13:51,368 INFO L131 PetriNetUnfolder]: For 89113/89113 co-relation queries the response was YES. [2022-11-23 04:13:51,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114364 conditions, 29519 events. 21230/29519 cut-off events. For 89113/89113 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 167636 event pairs, 5569 based on Foata normal form. 4/25405 useless extension candidates. Maximal degree in co-relation 114252. Up to 27071 conditions per place. [2022-11-23 04:13:51,589 INFO L137 encePairwiseOnDemand]: 1695/1699 looper letters, 166 selfloop transitions, 11 changer transitions 30/207 dead transitions. [2022-11-23 04:13:51,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 207 transitions, 2061 flow [2022-11-23 04:13:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:13:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 04:13:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2915 transitions. [2022-11-23 04:13:51,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42892878163625664 [2022-11-23 04:13:51,597 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2915 transitions. [2022-11-23 04:13:51,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2915 transitions. [2022-11-23 04:13:51,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:13:51,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2915 transitions. [2022-11-23 04:13:51,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 728.75) internal successors, (2915), 4 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states 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 04:13:51,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1699.0) internal successors, (8495), 5 states have internal predecessors, (8495), 0 states have call successors, (0), 0 states 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 04:13:51,612 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1699.0) internal successors, (8495), 5 states have internal predecessors, (8495), 0 states have call successors, (0), 0 states 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 04:13:51,613 INFO L175 Difference]: Start difference. First operand has 92 places, 136 transitions, 1184 flow. Second operand 4 states and 2915 transitions. [2022-11-23 04:13:51,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 207 transitions, 2061 flow [2022-11-23 04:13:51,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 207 transitions, 2040 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-23 04:13:51,984 INFO L231 Difference]: Finished difference. Result has 97 places, 141 transitions, 1278 flow [2022-11-23 04:13:51,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1278, PETRI_PLACES=97, PETRI_TRANSITIONS=141} [2022-11-23 04:13:51,985 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2022-11-23 04:13:51,986 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 141 transitions, 1278 flow [2022-11-23 04:13:51,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 710.6666666666666) internal successors, (4264), 6 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states 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 04:13:51,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:13:51,987 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:51,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 04:13:52,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbfffb9e-302c-4ba8-b9a0-e8b66789b6d4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:13:52,195 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 04:13:52,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash 966089324, now seen corresponding path program 2 times [2022-11-23 04:13:52,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:52,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425483841] [2022-11-23 04:13:52,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:52,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-23 04:13:52,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:52,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425483841] [2022-11-23 04:13:52,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425483841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:52,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:52,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 04:13:52,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67908176] [2022-11-23 04:13:52,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:52,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:13:52,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:52,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:13:52,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:13:53,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 701 out of 1699 [2022-11-23 04:13:53,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 141 transitions, 1278 flow. Second operand has 5 states, 5 states have (on average 705.8) internal successors, (3529), 5 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states 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 04:13:53,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:13:53,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 701 of 1699 [2022-11-23 04:13:53,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand