./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ --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 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c --- 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-dbf71c6-m [2022-10-17 10:48:40,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:48:40,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:48:40,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:48:40,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:48:40,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:48:40,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:48:40,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:48:40,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:48:40,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:48:40,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:48:40,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:48:40,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:48:40,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:48:40,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:48:40,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:48:40,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:48:40,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:48:40,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:48:40,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:48:40,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:48:40,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:48:40,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:48:40,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:48:40,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:48:40,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:48:40,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:48:40,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:48:40,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:48:40,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:48:40,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:48:40,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:48:40,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:48:40,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:48:40,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:48:40,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:48:40,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:48:40,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:48:40,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:48:40,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:48:40,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:48:40,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:48:40,309 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:48:40,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:48:40,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:48:40,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:48:40,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:48:40,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:48:40,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:48:40,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:48:40,313 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:48:40,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:48:40,315 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:48:40,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:48:40,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:48:40,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:48:40,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:48:40,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:48:40,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:48:40,317 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:48:40,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:48:40,318 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:48:40,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:48:40,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:48:40,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:48:40,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:48:40,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:48:40,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:48:40,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:48:40,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:48:40,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:48:40,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:48:40,331 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:48:40,331 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:48:40,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:48:40,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c [2022-10-17 10:48:40,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:48:40,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:48:40,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:48:40,650 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:48:40,651 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:48:40,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2022-10-17 10:48:40,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/data/7861e8705/bfcec3c152e447edba387f53033069cd/FLAG836e228b8 [2022-10-17 10:48:41,215 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:48:41,220 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2022-10-17 10:48:41,231 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/data/7861e8705/bfcec3c152e447edba387f53033069cd/FLAG836e228b8 [2022-10-17 10:48:41,570 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/data/7861e8705/bfcec3c152e447edba387f53033069cd [2022-10-17 10:48:41,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:48:41,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:48:41,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:48:41,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:48:41,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:48:41,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:48:41" (1/1) ... [2022-10-17 10:48:41,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d96a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:41, skipping insertion in model container [2022-10-17 10:48:41,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:48:41" (1/1) ... [2022-10-17 10:48:41,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:48:41,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:48:41,962 WARN L230 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_1de1a802-a43d-4957-ac04-07b5d58073ab/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2333,2346] [2022-10-17 10:48:41,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:48:41,981 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:48:42,034 WARN L230 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_1de1a802-a43d-4957-ac04-07b5d58073ab/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2333,2346] [2022-10-17 10:48:42,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:48:42,052 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:48:42,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:42 WrapperNode [2022-10-17 10:48:42,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:48:42,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:48:42,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:48:42,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:48:42,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:42" (1/1) ... [2022-10-17 10:48:42,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:42" (1/1) ... [2022-10-17 10:48:42,099 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2022-10-17 10:48:42,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:48:42,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:48:42,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:48:42,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:48:42,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:42" (1/1) ... [2022-10-17 10:48:42,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:42" (1/1) ... [2022-10-17 10:48:42,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:42" (1/1) ... [2022-10-17 10:48:42,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:42" (1/1) ... [2022-10-17 10:48:42,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:42" (1/1) ... [2022-10-17 10:48:42,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:42" (1/1) ... [2022-10-17 10:48:42,130 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:42" (1/1) ... [2022-10-17 10:48:42,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:42" (1/1) ... [2022-10-17 10:48:42,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:48:42,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:48:42,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:48:42,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:48:42,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:42" (1/1) ... [2022-10-17 10:48:42,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:48:42,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:42,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:48:42,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1de1a802-a43d-4957-ac04-07b5d58073ab/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:48:42,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:48:42,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:48:42,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:48:42,237 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:48:42,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:48:42,237 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:48:42,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:48:42,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:48:42,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:48:42,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:48:42,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:48:42,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:48:42,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:48:42,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:48:42,241 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:48:42,354 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:48:42,356 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:48:42,774 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:48:42,784 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:48:42,785 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:48:42,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:48:42 BoogieIcfgContainer [2022-10-17 10:48:42,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:48:42,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:48:42,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:48:42,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:48:42,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:48:41" (1/3) ... [2022-10-17 10:48:42,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790c14fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:48:42, skipping insertion in model container [2022-10-17 10:48:42,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:42" (2/3) ... [2022-10-17 10:48:42,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790c14fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:48:42, skipping insertion in model container [2022-10-17 10:48:42,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:48:42" (3/3) ... [2022-10-17 10:48:42,801 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2022-10-17 10:48:42,812 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:48:42,823 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:48:42,823 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:48:42,823 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:48:42,914 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-10-17 10:48:42,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 124 transitions, 272 flow [2022-10-17 10:48:43,045 INFO L130 PetriNetUnfolder]: 8/121 cut-off events. [2022-10-17 10:48:43,046 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:48:43,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 8/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-10-17 10:48:43,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 124 transitions, 272 flow [2022-10-17 10:48:43,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 110 transitions, 238 flow [2022-10-17 10:48:43,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:48:43,080 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;@3d7a281e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:48:43,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:48:43,124 INFO L130 PetriNetUnfolder]: 8/109 cut-off events. [2022-10-17 10:48:43,125 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:48:43,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:48:43,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:48:43,127 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)] === [2022-10-17 10:48:43,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:43,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1300653786, now seen corresponding path program 1 times [2022-10-17 10:48:43,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:43,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498008321] [2022-10-17 10:48:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:43,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:48:44,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:44,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498008321] [2022-10-17 10:48:44,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498008321] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:44,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:44,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:48:44,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953137171] [2022-10-17 10:48:44,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:44,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:48:44,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:44,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:48:44,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:48:44,598 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 124 [2022-10-17 10:48:44,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:44,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:48:44,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 124 [2022-10-17 10:48:44,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:48:45,145 INFO L130 PetriNetUnfolder]: 133/444 cut-off events. [2022-10-17 10:48:45,146 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2022-10-17 10:48:45,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 444 events. 133/444 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2266 event pairs, 29 based on Foata normal form. 6/437 useless extension candidates. Maximal degree in co-relation 610. Up to 70 conditions per place. [2022-10-17 10:48:45,160 INFO L137 encePairwiseOnDemand]: 110/124 looper letters, 54 selfloop transitions, 19 changer transitions 18/173 dead transitions. [2022-10-17 10:48:45,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 173 transitions, 597 flow [2022-10-17 10:48:45,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:48:45,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-10-17 10:48:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1523 transitions. [2022-10-17 10:48:45,195 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8188172043010753 [2022-10-17 10:48:45,196 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1523 transitions. [2022-10-17 10:48:45,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1523 transitions. [2022-10-17 10:48:45,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:48:45,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1523 transitions. [2022-10-17 10:48:45,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 101.53333333333333) internal successors, (1523), 15 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:45,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 124.0) internal successors, (1984), 16 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:45,237 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 124.0) internal successors, (1984), 16 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:45,239 INFO L175 Difference]: Start difference. First operand has 112 places, 110 transitions, 238 flow. Second operand 15 states and 1523 transitions. [2022-10-17 10:48:45,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 173 transitions, 597 flow [2022-10-17 10:48:45,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 173 transitions, 551 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-10-17 10:48:45,255 INFO L231 Difference]: Finished difference. Result has 128 places, 123 transitions, 343 flow [2022-10-17 10:48:45,258 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=343, PETRI_PLACES=128, PETRI_TRANSITIONS=123} [2022-10-17 10:48:45,262 INFO L287 CegarLoopForPetriNet]: 112 programPoint places, 16 predicate places. [2022-10-17 10:48:45,262 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 123 transitions, 343 flow [2022-10-17 10:48:45,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:45,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:48:45,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:48:45,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:48:45,265 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)] === [2022-10-17 10:48:45,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:45,266 INFO L85 PathProgramCache]: Analyzing trace with hash 977929753, now seen corresponding path program 1 times [2022-10-17 10:48:45,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:45,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785447008] [2022-10-17 10:48:45,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:45,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:48:45,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:45,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785447008] [2022-10-17 10:48:45,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785447008] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:45,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:45,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:48:45,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291913227] [2022-10-17 10:48:45,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:45,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:48:45,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:45,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:48:45,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:48:45,563 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-10-17 10:48:45,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 123 transitions, 343 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:45,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:48:45,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-10-17 10:48:45,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:48:46,185 INFO L130 PetriNetUnfolder]: 440/2295 cut-off events. [2022-10-17 10:48:46,186 INFO L131 PetriNetUnfolder]: For 576/611 co-relation queries the response was YES. [2022-10-17 10:48:46,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 2295 events. 440/2295 cut-off events. For 576/611 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 21809 event pairs, 102 based on Foata normal form. 20/2035 useless extension candidates. Maximal degree in co-relation 4000. Up to 240 conditions per place. [2022-10-17 10:48:46,215 INFO L137 encePairwiseOnDemand]: 109/124 looper letters, 55 selfloop transitions, 22 changer transitions 6/182 dead transitions. [2022-10-17 10:48:46,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 182 transitions, 644 flow [2022-10-17 10:48:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:48:46,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:48:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 667 transitions. [2022-10-17 10:48:46,219 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.896505376344086 [2022-10-17 10:48:46,219 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 667 transitions. [2022-10-17 10:48:46,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 667 transitions. [2022-10-17 10:48:46,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:48:46,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 667 transitions. [2022-10-17 10:48:46,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.16666666666667) internal successors, (667), 6 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:46,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:46,226 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:46,226 INFO L175 Difference]: Start difference. First operand has 128 places, 123 transitions, 343 flow. Second operand 6 states and 667 transitions. [2022-10-17 10:48:46,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 182 transitions, 644 flow [2022-10-17 10:48:46,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 182 transitions, 640 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-10-17 10:48:46,251 INFO L231 Difference]: Finished difference. Result has 129 places, 142 transitions, 499 flow [2022-10-17 10:48:46,252 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=499, PETRI_PLACES=129, PETRI_TRANSITIONS=142} [2022-10-17 10:48:46,253 INFO L287 CegarLoopForPetriNet]: 112 programPoint places, 17 predicate places. [2022-10-17 10:48:46,253 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 142 transitions, 499 flow [2022-10-17 10:48:46,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:46,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:48:46,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:48:46,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:48:46,255 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)] === [2022-10-17 10:48:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1197744635, now seen corresponding path program 1 times [2022-10-17 10:48:46,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:46,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040549919] [2022-10-17 10:48:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:46,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:48:46,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:46,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040549919] [2022-10-17 10:48:46,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040549919] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:46,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:46,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:48:46,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656027396] [2022-10-17 10:48:46,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:46,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:48:46,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:46,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:48:46,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:48:46,585 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-10-17 10:48:46,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 142 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:46,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:48:46,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-10-17 10:48:46,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:48:47,299 INFO L130 PetriNetUnfolder]: 547/2808 cut-off events. [2022-10-17 10:48:47,300 INFO L131 PetriNetUnfolder]: For 1503/1561 co-relation queries the response was YES. [2022-10-17 10:48:47,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5794 conditions, 2808 events. 547/2808 cut-off events. For 1503/1561 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 27160 event pairs, 108 based on Foata normal form. 50/2744 useless extension candidates. Maximal degree in co-relation 4967. Up to 244 conditions per place. [2022-10-17 10:48:47,337 INFO L137 encePairwiseOnDemand]: 113/124 looper letters, 83 selfloop transitions, 30 changer transitions 14/217 dead transitions. [2022-10-17 10:48:47,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 217 transitions, 1100 flow [2022-10-17 10:48:47,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:48:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:48:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 663 transitions. [2022-10-17 10:48:47,341 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8911290322580645 [2022-10-17 10:48:47,341 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 663 transitions. [2022-10-17 10:48:47,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 663 transitions. [2022-10-17 10:48:47,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:48:47,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 663 transitions. [2022-10-17 10:48:47,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:47,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:47,351 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:47,351 INFO L175 Difference]: Start difference. First operand has 129 places, 142 transitions, 499 flow. Second operand 6 states and 663 transitions. [2022-10-17 10:48:47,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 217 transitions, 1100 flow [2022-10-17 10:48:47,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 217 transitions, 1100 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:48:47,383 INFO L231 Difference]: Finished difference. Result has 139 places, 155 transitions, 739 flow [2022-10-17 10:48:47,384 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=739, PETRI_PLACES=139, PETRI_TRANSITIONS=155} [2022-10-17 10:48:47,387 INFO L287 CegarLoopForPetriNet]: 112 programPoint places, 27 predicate places. [2022-10-17 10:48:47,387 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 155 transitions, 739 flow [2022-10-17 10:48:47,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:47,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:48:47,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:48:47,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:48:47,389 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)] === [2022-10-17 10:48:47,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:47,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1796762059, now seen corresponding path program 1 times [2022-10-17 10:48:47,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:47,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082090096] [2022-10-17 10:48:47,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:47,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:48:48,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:48,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082090096] [2022-10-17 10:48:48,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082090096] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:48,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:48,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:48:48,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364706945] [2022-10-17 10:48:48,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:48,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:48:48,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:48,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:48:48,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:48:48,055 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-10-17 10:48:48,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 155 transitions, 739 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:48,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:48:48,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-10-17 10:48:48,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:48:49,140 INFO L130 PetriNetUnfolder]: 583/3637 cut-off events. [2022-10-17 10:48:49,140 INFO L131 PetriNetUnfolder]: For 3506/3583 co-relation queries the response was YES. [2022-10-17 10:48:49,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7884 conditions, 3637 events. 583/3637 cut-off events. For 3506/3583 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 38581 event pairs, 140 based on Foata normal form. 67/3565 useless extension candidates. Maximal degree in co-relation 6739. Up to 307 conditions per place. [2022-10-17 10:48:49,190 INFO L137 encePairwiseOnDemand]: 111/124 looper letters, 98 selfloop transitions, 52 changer transitions 3/243 dead transitions. [2022-10-17 10:48:49,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 243 transitions, 1631 flow [2022-10-17 10:48:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:48:49,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:48:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-10-17 10:48:49,194 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-10-17 10:48:49,195 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-10-17 10:48:49,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-10-17 10:48:49,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:48:49,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-10-17 10:48:49,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:49,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:49,202 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:49,202 INFO L175 Difference]: Start difference. First operand has 139 places, 155 transitions, 739 flow. Second operand 7 states and 769 transitions. [2022-10-17 10:48:49,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 243 transitions, 1631 flow [2022-10-17 10:48:49,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 243 transitions, 1627 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-10-17 10:48:49,234 INFO L231 Difference]: Finished difference. Result has 146 places, 186 transitions, 1269 flow [2022-10-17 10:48:49,235 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1269, PETRI_PLACES=146, PETRI_TRANSITIONS=186} [2022-10-17 10:48:49,236 INFO L287 CegarLoopForPetriNet]: 112 programPoint places, 34 predicate places. [2022-10-17 10:48:49,236 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 186 transitions, 1269 flow [2022-10-17 10:48:49,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:49,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:48:49,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:48:49,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:48:49,237 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)] === [2022-10-17 10:48:49,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:49,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1467608679, now seen corresponding path program 2 times [2022-10-17 10:48:49,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:49,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204957583] [2022-10-17 10:48:49,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:49,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:48:49,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:49,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204957583] [2022-10-17 10:48:49,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204957583] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:49,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:49,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:48:49,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514162785] [2022-10-17 10:48:49,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:49,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:48:49,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:49,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:48:49,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:48:49,545 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-10-17 10:48:49,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 186 transitions, 1269 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:49,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:48:49,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-10-17 10:48:49,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:48:50,639 INFO L130 PetriNetUnfolder]: 671/4030 cut-off events. [2022-10-17 10:48:50,640 INFO L131 PetriNetUnfolder]: For 6844/6942 co-relation queries the response was YES. [2022-10-17 10:48:50,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9619 conditions, 4030 events. 671/4030 cut-off events. For 6844/6942 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 43727 event pairs, 140 based on Foata normal form. 75/3972 useless extension candidates. Maximal degree in co-relation 7613. Up to 416 conditions per place. [2022-10-17 10:48:50,700 INFO L137 encePairwiseOnDemand]: 110/124 looper letters, 114 selfloop transitions, 64 changer transitions 3/271 dead transitions. [2022-10-17 10:48:50,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 271 transitions, 2478 flow [2022-10-17 10:48:50,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:48:50,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:48:50,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2022-10-17 10:48:50,704 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.896774193548387 [2022-10-17 10:48:50,704 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2022-10-17 10:48:50,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2022-10-17 10:48:50,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:48:50,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2022-10-17 10:48:50,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:50,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:50,710 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:50,710 INFO L175 Difference]: Start difference. First operand has 146 places, 186 transitions, 1269 flow. Second operand 5 states and 556 transitions. [2022-10-17 10:48:50,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 271 transitions, 2478 flow [2022-10-17 10:48:50,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 271 transitions, 2468 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-10-17 10:48:50,758 INFO L231 Difference]: Finished difference. Result has 154 places, 226 transitions, 2049 flow [2022-10-17 10:48:50,759 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2049, PETRI_PLACES=154, PETRI_TRANSITIONS=226} [2022-10-17 10:48:50,761 INFO L287 CegarLoopForPetriNet]: 112 programPoint places, 42 predicate places. [2022-10-17 10:48:50,761 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 226 transitions, 2049 flow [2022-10-17 10:48:50,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:50,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:48:50,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:48:50,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:48:50,763 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)] === [2022-10-17 10:48:50,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:50,765 INFO L85 PathProgramCache]: Analyzing trace with hash 243565407, now seen corresponding path program 3 times [2022-10-17 10:48:50,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:50,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601216328] [2022-10-17 10:48:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:50,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:48:51,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:51,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601216328] [2022-10-17 10:48:51,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601216328] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:51,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:51,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:48:51,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554905613] [2022-10-17 10:48:51,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:51,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:48:51,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:51,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:48:51,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:48:51,106 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-10-17 10:48:51,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 226 transitions, 2049 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:51,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:48:51,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-10-17 10:48:51,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:48:52,314 INFO L130 PetriNetUnfolder]: 687/4317 cut-off events. [2022-10-17 10:48:52,314 INFO L131 PetriNetUnfolder]: For 10088/10194 co-relation queries the response was YES. [2022-10-17 10:48:52,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10842 conditions, 4317 events. 687/4317 cut-off events. For 10088/10194 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 48010 event pairs, 157 based on Foata normal form. 79/4233 useless extension candidates. Maximal degree in co-relation 8591. Up to 607 conditions per place. [2022-10-17 10:48:52,370 INFO L137 encePairwiseOnDemand]: 111/124 looper letters, 145 selfloop transitions, 42 changer transitions 5/282 dead transitions. [2022-10-17 10:48:52,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 282 transitions, 2977 flow [2022-10-17 10:48:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:48:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:48:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2022-10-17 10:48:52,373 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8935483870967742 [2022-10-17 10:48:52,374 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2022-10-17 10:48:52,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2022-10-17 10:48:52,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:48:52,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2022-10-17 10:48:52,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:52,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:52,379 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:52,379 INFO L175 Difference]: Start difference. First operand has 154 places, 226 transitions, 2049 flow. Second operand 5 states and 554 transitions. [2022-10-17 10:48:52,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 282 transitions, 2977 flow [2022-10-17 10:48:52,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 282 transitions, 2967 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-10-17 10:48:52,432 INFO L231 Difference]: Finished difference. Result has 161 places, 238 transitions, 2395 flow [2022-10-17 10:48:52,433 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2041, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2395, PETRI_PLACES=161, PETRI_TRANSITIONS=238} [2022-10-17 10:48:52,436 INFO L287 CegarLoopForPetriNet]: 112 programPoint places, 49 predicate places. [2022-10-17 10:48:52,436 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 238 transitions, 2395 flow [2022-10-17 10:48:52,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:52,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:48:52,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:48:52,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:48:52,439 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)] === [2022-10-17 10:48:52,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:52,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1725938253, now seen corresponding path program 2 times [2022-10-17 10:48:52,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:52,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60939138] [2022-10-17 10:48:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:52,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:48:52,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:52,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60939138] [2022-10-17 10:48:52,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60939138] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:52,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:52,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:48:52,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23859709] [2022-10-17 10:48:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:52,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:48:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:52,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:48:52,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:48:52,900 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-10-17 10:48:52,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 238 transitions, 2395 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:52,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:48:52,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-10-17 10:48:52,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:48:54,118 INFO L130 PetriNetUnfolder]: 670/4152 cut-off events. [2022-10-17 10:48:54,118 INFO L131 PetriNetUnfolder]: For 14251/14333 co-relation queries the response was YES. [2022-10-17 10:48:54,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11204 conditions, 4152 events. 670/4152 cut-off events. For 14251/14333 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 45652 event pairs, 164 based on Foata normal form. 82/4070 useless extension candidates. Maximal degree in co-relation 9089. Up to 418 conditions per place. [2022-10-17 10:48:54,182 INFO L137 encePairwiseOnDemand]: 110/124 looper letters, 151 selfloop transitions, 84 changer transitions 5/330 dead transitions. [2022-10-17 10:48:54,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 330 transitions, 3916 flow [2022-10-17 10:48:54,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:48:54,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:48:54,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-10-17 10:48:54,187 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-10-17 10:48:54,187 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-10-17 10:48:54,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-10-17 10:48:54,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:48:54,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-10-17 10:48:54,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:54,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:54,196 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:54,196 INFO L175 Difference]: Start difference. First operand has 161 places, 238 transitions, 2395 flow. Second operand 7 states and 769 transitions. [2022-10-17 10:48:54,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 330 transitions, 3916 flow [2022-10-17 10:48:54,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 330 transitions, 3883 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-10-17 10:48:54,267 INFO L231 Difference]: Finished difference. Result has 172 places, 272 transitions, 3275 flow [2022-10-17 10:48:54,267 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3275, PETRI_PLACES=172, PETRI_TRANSITIONS=272} [2022-10-17 10:48:54,269 INFO L287 CegarLoopForPetriNet]: 112 programPoint places, 60 predicate places. [2022-10-17 10:48:54,269 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 272 transitions, 3275 flow [2022-10-17 10:48:54,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:54,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:48:54,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:48:54,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:48:54,270 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)] === [2022-10-17 10:48:54,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:54,271 INFO L85 PathProgramCache]: Analyzing trace with hash -695781413, now seen corresponding path program 2 times [2022-10-17 10:48:54,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:54,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657581689] [2022-10-17 10:48:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:54,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:48:54,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:54,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657581689] [2022-10-17 10:48:54,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657581689] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:54,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:54,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:48:54,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748849466] [2022-10-17 10:48:54,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:54,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:48:54,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:54,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:48:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:48:54,866 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-10-17 10:48:54,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 272 transitions, 3275 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:54,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:48:54,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-10-17 10:48:54,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:48:56,270 INFO L130 PetriNetUnfolder]: 643/4592 cut-off events. [2022-10-17 10:48:56,270 INFO L131 PetriNetUnfolder]: For 17875/17966 co-relation queries the response was YES. [2022-10-17 10:48:56,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12413 conditions, 4592 events. 643/4592 cut-off events. For 17875/17966 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 52629 event pairs, 163 based on Foata normal form. 91/4504 useless extension candidates. Maximal degree in co-relation 11101. Up to 340 conditions per place. [2022-10-17 10:48:56,332 INFO L137 encePairwiseOnDemand]: 110/124 looper letters, 182 selfloop transitions, 72 changer transitions 9/353 dead transitions. [2022-10-17 10:48:56,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 353 transitions, 4619 flow [2022-10-17 10:48:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:48:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:48:56,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2022-10-17 10:48:56,337 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8894009216589862 [2022-10-17 10:48:56,337 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2022-10-17 10:48:56,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2022-10-17 10:48:56,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:48:56,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2022-10-17 10:48:56,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:56,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:56,346 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:56,346 INFO L175 Difference]: Start difference. First operand has 172 places, 272 transitions, 3275 flow. Second operand 7 states and 772 transitions. [2022-10-17 10:48:56,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 353 transitions, 4619 flow [2022-10-17 10:48:56,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 353 transitions, 4589 flow, removed 15 selfloop flow, removed 0 redundant places. [2022-10-17 10:48:56,439 INFO L231 Difference]: Finished difference. Result has 182 places, 285 transitions, 3682 flow [2022-10-17 10:48:56,439 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2995, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3682, PETRI_PLACES=182, PETRI_TRANSITIONS=285} [2022-10-17 10:48:56,440 INFO L287 CegarLoopForPetriNet]: 112 programPoint places, 70 predicate places. [2022-10-17 10:48:56,440 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 285 transitions, 3682 flow [2022-10-17 10:48:56,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:56,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:48:56,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:48:56,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:48:56,442 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)] === [2022-10-17 10:48:56,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:56,443 INFO L85 PathProgramCache]: Analyzing trace with hash -604445853, now seen corresponding path program 4 times [2022-10-17 10:48:56,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:56,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005917808] [2022-10-17 10:48:56,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:56,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:56,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:48:56,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:56,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005917808] [2022-10-17 10:48:56,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005917808] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:56,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:56,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:48:56,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614618924] [2022-10-17 10:48:56,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:56,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:48:56,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:56,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:48:56,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:48:56,654 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-10-17 10:48:56,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 285 transitions, 3682 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:56,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:48:56,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-10-17 10:48:56,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:48:57,704 INFO L130 PetriNetUnfolder]: 612/4143 cut-off events. [2022-10-17 10:48:57,705 INFO L131 PetriNetUnfolder]: For 18794/18869 co-relation queries the response was YES. [2022-10-17 10:48:57,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12023 conditions, 4143 events. 612/4143 cut-off events. For 18794/18869 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 46350 event pairs, 155 based on Foata normal form. 52/4040 useless extension candidates. Maximal degree in co-relation 10735. Up to 427 conditions per place. [2022-10-17 10:48:57,778 INFO L137 encePairwiseOnDemand]: 110/124 looper letters, 147 selfloop transitions, 79 changer transitions 6/322 dead transitions. [2022-10-17 10:48:57,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 322 transitions, 4542 flow [2022-10-17 10:48:57,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:48:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:48:57,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2022-10-17 10:48:57,781 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8951612903225806 [2022-10-17 10:48:57,782 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2022-10-17 10:48:57,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2022-10-17 10:48:57,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:48:57,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2022-10-17 10:48:57,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:57,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:57,789 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:57,789 INFO L175 Difference]: Start difference. First operand has 182 places, 285 transitions, 3682 flow. Second operand 5 states and 555 transitions. [2022-10-17 10:48:57,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 322 transitions, 4542 flow [2022-10-17 10:48:57,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 322 transitions, 4508 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-10-17 10:48:57,901 INFO L231 Difference]: Finished difference. Result has 187 places, 286 transitions, 3957 flow [2022-10-17 10:48:57,902 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3626, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3957, PETRI_PLACES=187, PETRI_TRANSITIONS=286} [2022-10-17 10:48:57,903 INFO L287 CegarLoopForPetriNet]: 112 programPoint places, 75 predicate places. [2022-10-17 10:48:57,903 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 286 transitions, 3957 flow [2022-10-17 10:48:57,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:57,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:48:57,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:48:57,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:48:57,905 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)] === [2022-10-17 10:48:57,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:57,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1789923085, now seen corresponding path program 1 times [2022-10-17 10:48:57,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:57,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818383443] [2022-10-17 10:48:57,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:57,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:48:58,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:58,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818383443] [2022-10-17 10:48:58,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818383443] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:58,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:58,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:48:58,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250599009] [2022-10-17 10:48:58,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:58,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:48:58,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:58,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:48:58,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:48:58,285 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-10-17 10:48:58,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 286 transitions, 3957 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:58,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:48:58,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-10-17 10:48:58,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:48:59,604 INFO L130 PetriNetUnfolder]: 595/4096 cut-off events. [2022-10-17 10:48:59,604 INFO L131 PetriNetUnfolder]: For 22148/22224 co-relation queries the response was YES. [2022-10-17 10:48:59,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12158 conditions, 4096 events. 595/4096 cut-off events. For 22148/22224 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 45716 event pairs, 146 based on Foata normal form. 75/4017 useless extension candidates. Maximal degree in co-relation 11102. Up to 389 conditions per place. [2022-10-17 10:48:59,683 INFO L137 encePairwiseOnDemand]: 110/124 looper letters, 196 selfloop transitions, 69 changer transitions 17/372 dead transitions. [2022-10-17 10:48:59,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 372 transitions, 5619 flow [2022-10-17 10:48:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:48:59,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:48:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-10-17 10:48:59,689 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-10-17 10:48:59,689 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-10-17 10:48:59,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-10-17 10:48:59,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:48:59,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-10-17 10:48:59,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:59,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:59,698 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:59,699 INFO L175 Difference]: Start difference. First operand has 187 places, 286 transitions, 3957 flow. Second operand 7 states and 769 transitions. [2022-10-17 10:48:59,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 372 transitions, 5619 flow [2022-10-17 10:48:59,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 372 transitions, 5562 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:48:59,845 INFO L231 Difference]: Finished difference. Result has 197 places, 309 transitions, 4602 flow [2022-10-17 10:48:59,846 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3796, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4602, PETRI_PLACES=197, PETRI_TRANSITIONS=309} [2022-10-17 10:48:59,847 INFO L287 CegarLoopForPetriNet]: 112 programPoint places, 85 predicate places. [2022-10-17 10:48:59,847 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 309 transitions, 4602 flow [2022-10-17 10:48:59,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:59,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:48:59,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:48:59,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:48:59,849 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)] === [2022-10-17 10:48:59,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:59,849 INFO L85 PathProgramCache]: Analyzing trace with hash -554510261, now seen corresponding path program 3 times [2022-10-17 10:48:59,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:59,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682471951] [2022-10-17 10:48:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:59,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:00,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:00,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682471951] [2022-10-17 10:49:00,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682471951] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:00,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:00,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:49:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361113189] [2022-10-17 10:49:00,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:00,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:49:00,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:49:00,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:49:00,211 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-10-17 10:49:00,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 309 transitions, 4602 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:00,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:00,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-10-17 10:49:00,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:01,426 INFO L130 PetriNetUnfolder]: 571/4014 cut-off events. [2022-10-17 10:49:01,426 INFO L131 PetriNetUnfolder]: For 22442/22521 co-relation queries the response was YES. [2022-10-17 10:49:01,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12390 conditions, 4014 events. 571/4014 cut-off events. For 22442/22521 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 44476 event pairs, 139 based on Foata normal form. 43/3896 useless extension candidates. Maximal degree in co-relation 11225. Up to 360 conditions per place. [2022-10-17 10:49:01,511 INFO L137 encePairwiseOnDemand]: 113/124 looper letters, 160 selfloop transitions, 111 changer transitions 7/368 dead transitions. [2022-10-17 10:49:01,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 368 transitions, 5943 flow [2022-10-17 10:49:01,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:49:01,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:49:01,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-10-17 10:49:01,515 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-10-17 10:49:01,516 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-10-17 10:49:01,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-10-17 10:49:01,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:01,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-10-17 10:49:01,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:01,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:01,524 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:01,524 INFO L175 Difference]: Start difference. First operand has 197 places, 309 transitions, 4602 flow. Second operand 7 states and 769 transitions. [2022-10-17 10:49:01,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 368 transitions, 5943 flow [2022-10-17 10:49:01,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 368 transitions, 5897 flow, removed 23 selfloop flow, removed 0 redundant places. [2022-10-17 10:49:01,688 INFO L231 Difference]: Finished difference. Result has 205 places, 315 transitions, 5026 flow [2022-10-17 10:49:01,689 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4556, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5026, PETRI_PLACES=205, PETRI_TRANSITIONS=315} [2022-10-17 10:49:01,690 INFO L287 CegarLoopForPetriNet]: 112 programPoint places, 93 predicate places. [2022-10-17 10:49:01,690 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 315 transitions, 5026 flow [2022-10-17 10:49:01,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:01,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:01,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:49:01,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:49:01,691 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)] === [2022-10-17 10:49:01,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1470842259, now seen corresponding path program 3 times [2022-10-17 10:49:01,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:01,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872699888] [2022-10-17 10:49:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:01,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:02,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:02,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:02,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872699888] [2022-10-17 10:49:02,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872699888] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:02,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:02,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:49:02,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786405019] [2022-10-17 10:49:02,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:02,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:49:02,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:02,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:49:02,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:49:02,073 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-10-17 10:49:02,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 315 transitions, 5026 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:02,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:02,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-10-17 10:49:02,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:03,401 INFO L130 PetriNetUnfolder]: 576/4100 cut-off events. [2022-10-17 10:49:03,402 INFO L131 PetriNetUnfolder]: For 24132/24205 co-relation queries the response was YES. [2022-10-17 10:49:03,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12649 conditions, 4100 events. 576/4100 cut-off events. For 24132/24205 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 45743 event pairs, 172 based on Foata normal form. 38/3962 useless extension candidates. Maximal degree in co-relation 11416. Up to 357 conditions per place. [2022-10-17 10:49:03,496 INFO L137 encePairwiseOnDemand]: 112/124 looper letters, 195 selfloop transitions, 87 changer transitions 7/379 dead transitions. [2022-10-17 10:49:03,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 379 transitions, 6343 flow [2022-10-17 10:49:03,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:49:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:49:03,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-10-17 10:49:03,504 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-10-17 10:49:03,505 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-10-17 10:49:03,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-10-17 10:49:03,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:03,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-10-17 10:49:03,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:03,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:03,513 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:03,514 INFO L175 Difference]: Start difference. First operand has 205 places, 315 transitions, 5026 flow. Second operand 7 states and 769 transitions. [2022-10-17 10:49:03,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 379 transitions, 6343 flow [2022-10-17 10:49:03,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 379 transitions, 6217 flow, removed 25 selfloop flow, removed 2 redundant places. [2022-10-17 10:49:03,737 INFO L231 Difference]: Finished difference. Result has 213 places, 326 transitions, 5348 flow [2022-10-17 10:49:03,738 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4856, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5348, PETRI_PLACES=213, PETRI_TRANSITIONS=326} [2022-10-17 10:49:03,739 INFO L287 CegarLoopForPetriNet]: 112 programPoint places, 101 predicate places. [2022-10-17 10:49:03,739 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 326 transitions, 5348 flow [2022-10-17 10:49:03,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:03,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:03,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:49:03,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 10:49:03,741 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)] === [2022-10-17 10:49:03,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:03,741 INFO L85 PathProgramCache]: Analyzing trace with hash 862136095, now seen corresponding path program 4 times [2022-10-17 10:49:03,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:03,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313375324] [2022-10-17 10:49:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:03,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:04,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:04,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313375324] [2022-10-17 10:49:04,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313375324] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:04,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:04,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:49:04,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406117847] [2022-10-17 10:49:04,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:04,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:49:04,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:04,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:49:04,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:49:04,050 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-10-17 10:49:04,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 326 transitions, 5348 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:04,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:04,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-10-17 10:49:04,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:05,406 INFO L130 PetriNetUnfolder]: 618/4612 cut-off events. [2022-10-17 10:49:05,407 INFO L131 PetriNetUnfolder]: For 25163/25255 co-relation queries the response was YES. [2022-10-17 10:49:05,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14028 conditions, 4612 events. 618/4612 cut-off events. For 25163/25255 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 52865 event pairs, 175 based on Foata normal form. 41/4476 useless extension candidates. Maximal degree in co-relation 12682. Up to 504 conditions per place. [2022-10-17 10:49:05,515 INFO L137 encePairwiseOnDemand]: 114/124 looper letters, 202 selfloop transitions, 70 changer transitions 4/366 dead transitions. [2022-10-17 10:49:05,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 366 transitions, 6517 flow [2022-10-17 10:49:05,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:49:05,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:49:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2022-10-17 10:49:05,519 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8741935483870967 [2022-10-17 10:49:05,519 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2022-10-17 10:49:05,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2022-10-17 10:49:05,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:05,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2022-10-17 10:49:05,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:05,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:05,525 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:05,526 INFO L175 Difference]: Start difference. First operand has 213 places, 326 transitions, 5348 flow. Second operand 5 states and 542 transitions. [2022-10-17 10:49:05,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 366 transitions, 6517 flow [2022-10-17 10:49:05,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 366 transitions, 6448 flow, removed 16 selfloop flow, removed 1 redundant places. [2022-10-17 10:49:05,767 INFO L231 Difference]: Finished difference. Result has 219 places, 337 transitions, 5778 flow [2022-10-17 10:49:05,768 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5287, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5778, PETRI_PLACES=219, PETRI_TRANSITIONS=337} [2022-10-17 10:49:05,769 INFO L287 CegarLoopForPetriNet]: 112 programPoint places, 107 predicate places. [2022-10-17 10:49:05,769 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 337 transitions, 5778 flow [2022-10-17 10:49:05,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:05,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:49:05,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:49:05,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 10:49:05,770 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)] === [2022-10-17 10:49:05,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash -744114497, now seen corresponding path program 2 times [2022-10-17 10:49:05,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:05,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62017020] [2022-10-17 10:49:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:05,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:06,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:06,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62017020] [2022-10-17 10:49:06,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62017020] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:06,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:06,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:49:06,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081529009] [2022-10-17 10:49:06,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:06,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:49:06,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:06,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:49:06,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:49:06,100 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-10-17 10:49:06,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 337 transitions, 5778 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:06,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:49:06,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-10-17 10:49:06,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:49:07,571 INFO L130 PetriNetUnfolder]: 641/5033 cut-off events. [2022-10-17 10:49:07,571 INFO L131 PetriNetUnfolder]: For 28117/28210 co-relation queries the response was YES. [2022-10-17 10:49:07,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15025 conditions, 5033 events. 641/5033 cut-off events. For 28117/28210 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 59389 event pairs, 211 based on Foata normal form. 40/4888 useless extension candidates. Maximal degree in co-relation 14208. Up to 785 conditions per place. [2022-10-17 10:49:07,664 INFO L137 encePairwiseOnDemand]: 117/124 looper letters, 236 selfloop transitions, 39 changer transitions 3/368 dead transitions. [2022-10-17 10:49:07,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 368 transitions, 6734 flow [2022-10-17 10:49:07,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:49:07,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:49:07,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 539 transitions. [2022-10-17 10:49:07,667 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8693548387096774 [2022-10-17 10:49:07,667 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 539 transitions. [2022-10-17 10:49:07,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 539 transitions. [2022-10-17 10:49:07,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:49:07,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 539 transitions. [2022-10-17 10:49:07,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:07,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:07,672 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:07,672 INFO L175 Difference]: Start difference. First operand has 219 places, 337 transitions, 5778 flow. Second operand 5 states and 539 transitions. [2022-10-17 10:49:07,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 368 transitions, 6734 flow