./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8 --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 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --- 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-e04fb08 [2022-11-16 12:22:41,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:22:41,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:22:41,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:22:41,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:22:41,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:22:41,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:22:41,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:22:41,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:22:41,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:22:41,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:22:41,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:22:41,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:22:41,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:22:41,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:22:41,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:22:41,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:22:41,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:22:41,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:22:41,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:22:41,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:22:41,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:22:41,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:22:41,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:22:41,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:22:41,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:22:41,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:22:41,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:22:41,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:22:41,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:22:41,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:22:41,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:22:41,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:22:41,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:22:41,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:22:41,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:22:41,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:22:41,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:22:41,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:22:41,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:22:41,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:22:41,266 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:22:41,308 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:22:41,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:22:41,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:22:41,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:22:41,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:22:41,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:22:41,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:22:41,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:22:41,312 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:22:41,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:22:41,313 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:22:41,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:22:41,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:22:41,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:22:41,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:22:41,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:22:41,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:22:41,315 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:22:41,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:22:41,315 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:22:41,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:22:41,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:22:41,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:22:41,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:22:41,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:22:41,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:22:41,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:22:41,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:22:41,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:22:41,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:22:41,319 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:22:41,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:22:41,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:22:41,320 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_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 [2022-11-16 12:22:41,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:22:41,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:22:41,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:22:41,747 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:22:41,747 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:22:41,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-11-16 12:22:41,821 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/data/348428a1c/ae689df3811843abafac931c5b3e23f1/FLAG7d35d0837 [2022-11-16 12:22:42,370 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:22:42,371 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-11-16 12:22:42,378 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/data/348428a1c/ae689df3811843abafac931c5b3e23f1/FLAG7d35d0837 [2022-11-16 12:22:42,722 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/data/348428a1c/ae689df3811843abafac931c5b3e23f1 [2022-11-16 12:22:42,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:22:42,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:22:42,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:22:42,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:22:42,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:22:42,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:22:42" (1/1) ... [2022-11-16 12:22:42,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ab8b19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:42, skipping insertion in model container [2022-11-16 12:22:42,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:22:42" (1/1) ... [2022-11-16 12:22:42,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:22:42,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:22:43,021 WARN L229 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_5f331c89-1dd2-4050-8f77-1440302255d3/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-11-16 12:22:43,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:22:43,043 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:22:43,080 WARN L229 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_5f331c89-1dd2-4050-8f77-1440302255d3/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-11-16 12:22:43,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:22:43,104 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:22:43,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:43 WrapperNode [2022-11-16 12:22:43,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:22:43,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:22:43,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:22:43,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:22:43,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:43" (1/1) ... [2022-11-16 12:22:43,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:43" (1/1) ... [2022-11-16 12:22:43,170 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 167 [2022-11-16 12:22:43,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:22:43,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:22:43,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:22:43,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:22:43,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:43" (1/1) ... [2022-11-16 12:22:43,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:43" (1/1) ... [2022-11-16 12:22:43,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:43" (1/1) ... [2022-11-16 12:22:43,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:43" (1/1) ... [2022-11-16 12:22:43,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:43" (1/1) ... [2022-11-16 12:22:43,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:43" (1/1) ... [2022-11-16 12:22:43,219 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:43" (1/1) ... [2022-11-16 12:22:43,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:43" (1/1) ... [2022-11-16 12:22:43,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:22:43,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:22:43,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:22:43,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:22:43,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:43" (1/1) ... [2022-11-16 12:22:43,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:22:43,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:22:43,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:22:43,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f331c89-1dd2-4050-8f77-1440302255d3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:22:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:22:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:22:43,293 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:22:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:22:43,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:22:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:22:43,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:22:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:22:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:22:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:22:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:22:43,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:22:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:22:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:22:43,297 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:22:43,406 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:22:43,408 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:22:43,900 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:22:43,911 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:22:43,911 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:22:43,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:22:43 BoogieIcfgContainer [2022-11-16 12:22:43,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:22:43,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:22:43,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:22:43,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:22:43,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:22:42" (1/3) ... [2022-11-16 12:22:43,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa224c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:22:43, skipping insertion in model container [2022-11-16 12:22:43,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:43" (2/3) ... [2022-11-16 12:22:43,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa224c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:22:43, skipping insertion in model container [2022-11-16 12:22:43,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:22:43" (3/3) ... [2022-11-16 12:22:43,924 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2022-11-16 12:22:43,934 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:22:43,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:22:43,945 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:22:43,946 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:22:44,085 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:22:44,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 220 transitions, 464 flow [2022-11-16 12:22:44,236 INFO L130 PetriNetUnfolder]: 14/217 cut-off events. [2022-11-16 12:22:44,237 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:22:44,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 217 events. 14/217 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 429 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2022-11-16 12:22:44,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 220 transitions, 464 flow [2022-11-16 12:22:44,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 206 transitions, 430 flow [2022-11-16 12:22:44,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:22:44,280 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;@27da25ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:22:44,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:22:44,413 INFO L130 PetriNetUnfolder]: 14/205 cut-off events. [2022-11-16 12:22:44,413 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:22:44,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:44,414 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:44,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:22:44,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:44,420 INFO L85 PathProgramCache]: Analyzing trace with hash -678266341, now seen corresponding path program 1 times [2022-11-16 12:22:44,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:44,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867235310] [2022-11-16 12:22:44,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:44,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:46,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:46,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867235310] [2022-11-16 12:22:46,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867235310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:46,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:46,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:22:46,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190857557] [2022-11-16 12:22:46,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:46,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:22:46,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:46,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:22:46,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:22:46,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:22:46,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 206 transitions, 430 flow. Second operand has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:46,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:46,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:22:46,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:22:47,363 INFO L130 PetriNetUnfolder]: 199/1071 cut-off events. [2022-11-16 12:22:47,363 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2022-11-16 12:22:47,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 1071 events. 199/1071 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7740 event pairs, 100 based on Foata normal form. 128/1104 useless extension candidates. Maximal degree in co-relation 1265. Up to 207 conditions per place. [2022-11-16 12:22:47,379 INFO L137 encePairwiseOnDemand]: 201/220 looper letters, 61 selfloop transitions, 12 changer transitions 23/262 dead transitions. [2022-11-16 12:22:47,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 262 transitions, 788 flow [2022-11-16 12:22:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:22:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:22:47,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2997 transitions. [2022-11-16 12:22:47,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8514204545454546 [2022-11-16 12:22:47,402 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2997 transitions. [2022-11-16 12:22:47,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2997 transitions. [2022-11-16 12:22:47,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:22:47,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2997 transitions. [2022-11-16 12:22:47,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 187.3125) internal successors, (2997), 16 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:47,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:47,433 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:47,435 INFO L175 Difference]: Start difference. First operand has 202 places, 206 transitions, 430 flow. Second operand 16 states and 2997 transitions. [2022-11-16 12:22:47,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 262 transitions, 788 flow [2022-11-16 12:22:47,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 262 transitions, 740 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:22:47,471 INFO L231 Difference]: Finished difference. Result has 221 places, 207 transitions, 487 flow [2022-11-16 12:22:47,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=487, PETRI_PLACES=221, PETRI_TRANSITIONS=207} [2022-11-16 12:22:47,477 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 19 predicate places. [2022-11-16 12:22:47,477 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 207 transitions, 487 flow [2022-11-16 12:22:47,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:47,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:47,478 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:47,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:22:47,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:22:47,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:47,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1501314021, now seen corresponding path program 2 times [2022-11-16 12:22:47,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:47,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256264194] [2022-11-16 12:22:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:47,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:48,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:48,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:48,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256264194] [2022-11-16 12:22:48,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256264194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:48,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:48,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:22:48,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412593187] [2022-11-16 12:22:48,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:48,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:22:48,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:48,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:22:48,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:22:48,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:22:48,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 207 transitions, 487 flow. Second operand has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:48,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:48,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:22:48,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:22:49,176 INFO L130 PetriNetUnfolder]: 218/1122 cut-off events. [2022-11-16 12:22:49,176 INFO L131 PetriNetUnfolder]: For 336/336 co-relation queries the response was YES. [2022-11-16 12:22:49,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1855 conditions, 1122 events. 218/1122 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8253 event pairs, 120 based on Foata normal form. 1/1031 useless extension candidates. Maximal degree in co-relation 1832. Up to 289 conditions per place. [2022-11-16 12:22:49,191 INFO L137 encePairwiseOnDemand]: 211/220 looper letters, 45 selfloop transitions, 19 changer transitions 12/242 dead transitions. [2022-11-16 12:22:49,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 242 transitions, 783 flow [2022-11-16 12:22:49,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:22:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:22:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2037 transitions. [2022-11-16 12:22:49,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8417355371900826 [2022-11-16 12:22:49,196 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2037 transitions. [2022-11-16 12:22:49,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2037 transitions. [2022-11-16 12:22:49,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:22:49,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2037 transitions. [2022-11-16 12:22:49,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.1818181818182) internal successors, (2037), 11 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:49,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 220.0) internal successors, (2640), 12 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:49,209 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 220.0) internal successors, (2640), 12 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:49,209 INFO L175 Difference]: Start difference. First operand has 221 places, 207 transitions, 487 flow. Second operand 11 states and 2037 transitions. [2022-11-16 12:22:49,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 242 transitions, 783 flow [2022-11-16 12:22:49,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 242 transitions, 777 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-16 12:22:49,219 INFO L231 Difference]: Finished difference. Result has 230 places, 218 transitions, 632 flow [2022-11-16 12:22:49,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=632, PETRI_PLACES=230, PETRI_TRANSITIONS=218} [2022-11-16 12:22:49,220 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 28 predicate places. [2022-11-16 12:22:49,220 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 218 transitions, 632 flow [2022-11-16 12:22:49,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:49,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:49,221 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:49,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:22:49,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:22:49,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:49,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1176809823, now seen corresponding path program 3 times [2022-11-16 12:22:49,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:49,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644185520] [2022-11-16 12:22:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:49,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:49,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:49,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644185520] [2022-11-16 12:22:49,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644185520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:49,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:49,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:22:49,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881085291] [2022-11-16 12:22:49,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:49,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:22:49,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:22:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:22:49,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:22:49,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 218 transitions, 632 flow. Second operand has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:49,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:49,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:22:49,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:22:50,605 INFO L130 PetriNetUnfolder]: 284/1344 cut-off events. [2022-11-16 12:22:50,605 INFO L131 PetriNetUnfolder]: For 1173/1173 co-relation queries the response was YES. [2022-11-16 12:22:50,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2678 conditions, 1344 events. 284/1344 cut-off events. For 1173/1173 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10477 event pairs, 152 based on Foata normal form. 1/1245 useless extension candidates. Maximal degree in co-relation 2648. Up to 367 conditions per place. [2022-11-16 12:22:50,622 INFO L137 encePairwiseOnDemand]: 211/220 looper letters, 59 selfloop transitions, 20 changer transitions 13/258 dead transitions. [2022-11-16 12:22:50,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 258 transitions, 1033 flow [2022-11-16 12:22:50,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:22:50,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:22:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2039 transitions. [2022-11-16 12:22:50,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8425619834710744 [2022-11-16 12:22:50,627 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2039 transitions. [2022-11-16 12:22:50,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2039 transitions. [2022-11-16 12:22:50,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:22:50,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2039 transitions. [2022-11-16 12:22:50,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.36363636363637) internal successors, (2039), 11 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:50,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 220.0) internal successors, (2640), 12 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:50,638 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 220.0) internal successors, (2640), 12 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:50,638 INFO L175 Difference]: Start difference. First operand has 230 places, 218 transitions, 632 flow. Second operand 11 states and 2039 transitions. [2022-11-16 12:22:50,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 258 transitions, 1033 flow [2022-11-16 12:22:50,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 258 transitions, 995 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-11-16 12:22:50,653 INFO L231 Difference]: Finished difference. Result has 243 places, 230 transitions, 798 flow [2022-11-16 12:22:50,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=798, PETRI_PLACES=243, PETRI_TRANSITIONS=230} [2022-11-16 12:22:50,655 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 41 predicate places. [2022-11-16 12:22:50,655 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 230 transitions, 798 flow [2022-11-16 12:22:50,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:50,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:50,656 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:50,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:22:50,656 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:22:50,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:50,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1644800397, now seen corresponding path program 4 times [2022-11-16 12:22:50,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:50,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431294536] [2022-11-16 12:22:50,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:50,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:51,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:51,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431294536] [2022-11-16 12:22:51,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431294536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:51,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:51,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:22:51,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723887893] [2022-11-16 12:22:51,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:51,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:22:51,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:51,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:22:51,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:22:51,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:22:51,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 230 transitions, 798 flow. Second operand has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:51,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:51,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:22:51,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:22:52,440 INFO L130 PetriNetUnfolder]: 299/1575 cut-off events. [2022-11-16 12:22:52,441 INFO L131 PetriNetUnfolder]: For 2119/2119 co-relation queries the response was YES. [2022-11-16 12:22:52,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1575 events. 299/1575 cut-off events. For 2119/2119 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13333 event pairs, 156 based on Foata normal form. 1/1479 useless extension candidates. Maximal degree in co-relation 3272. Up to 304 conditions per place. [2022-11-16 12:22:52,461 INFO L137 encePairwiseOnDemand]: 211/220 looper letters, 80 selfloop transitions, 29 changer transitions 16/291 dead transitions. [2022-11-16 12:22:52,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 291 transitions, 1367 flow [2022-11-16 12:22:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:22:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:22:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2416 transitions. [2022-11-16 12:22:52,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8447552447552448 [2022-11-16 12:22:52,467 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2416 transitions. [2022-11-16 12:22:52,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2416 transitions. [2022-11-16 12:22:52,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:22:52,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2416 transitions. [2022-11-16 12:22:52,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 185.84615384615384) internal successors, (2416), 13 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:52,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 220.0) internal successors, (3080), 14 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:52,486 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 220.0) internal successors, (3080), 14 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:52,486 INFO L175 Difference]: Start difference. First operand has 243 places, 230 transitions, 798 flow. Second operand 13 states and 2416 transitions. [2022-11-16 12:22:52,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 291 transitions, 1367 flow [2022-11-16 12:22:52,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 291 transitions, 1265 flow, removed 51 selfloop flow, removed 2 redundant places. [2022-11-16 12:22:52,504 INFO L231 Difference]: Finished difference. Result has 261 places, 240 transitions, 955 flow [2022-11-16 12:22:52,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=955, PETRI_PLACES=261, PETRI_TRANSITIONS=240} [2022-11-16 12:22:52,506 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 59 predicate places. [2022-11-16 12:22:52,508 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 240 transitions, 955 flow [2022-11-16 12:22:52,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:52,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:52,509 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:52,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:22:52,510 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:22:52,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:52,510 INFO L85 PathProgramCache]: Analyzing trace with hash 20426809, now seen corresponding path program 5 times [2022-11-16 12:22:52,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:52,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063773566] [2022-11-16 12:22:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:52,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:53,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:53,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063773566] [2022-11-16 12:22:53,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063773566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:53,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:53,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:22:53,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407158854] [2022-11-16 12:22:53,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:53,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:22:53,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:53,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:22:53,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:22:53,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:22:53,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 240 transitions, 955 flow. Second operand has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:53,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:53,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:22:53,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:22:54,044 INFO L130 PetriNetUnfolder]: 301/1653 cut-off events. [2022-11-16 12:22:54,044 INFO L131 PetriNetUnfolder]: For 2691/2693 co-relation queries the response was YES. [2022-11-16 12:22:54,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 1653 events. 301/1653 cut-off events. For 2691/2693 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14402 event pairs, 196 based on Foata normal form. 1/1539 useless extension candidates. Maximal degree in co-relation 3465. Up to 440 conditions per place. [2022-11-16 12:22:54,070 INFO L137 encePairwiseOnDemand]: 211/220 looper letters, 59 selfloop transitions, 29 changer transitions 18/272 dead transitions. [2022-11-16 12:22:54,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 272 transitions, 1353 flow [2022-11-16 12:22:54,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:22:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:22:54,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2220 transitions. [2022-11-16 12:22:54,077 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8409090909090909 [2022-11-16 12:22:54,077 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2220 transitions. [2022-11-16 12:22:54,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2220 transitions. [2022-11-16 12:22:54,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:22:54,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2220 transitions. [2022-11-16 12:22:54,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:54,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 220.0) internal successors, (2860), 13 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:54,092 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 220.0) internal successors, (2860), 13 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:54,092 INFO L175 Difference]: Start difference. First operand has 261 places, 240 transitions, 955 flow. Second operand 12 states and 2220 transitions. [2022-11-16 12:22:54,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 272 transitions, 1353 flow [2022-11-16 12:22:54,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 272 transitions, 1323 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-11-16 12:22:54,117 INFO L231 Difference]: Finished difference. Result has 273 places, 246 transitions, 1108 flow [2022-11-16 12:22:54,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1108, PETRI_PLACES=273, PETRI_TRANSITIONS=246} [2022-11-16 12:22:54,120 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 71 predicate places. [2022-11-16 12:22:54,121 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 246 transitions, 1108 flow [2022-11-16 12:22:54,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:54,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:54,122 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:54,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:22:54,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:22:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash 793011999, now seen corresponding path program 6 times [2022-11-16 12:22:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:54,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080715574] [2022-11-16 12:22:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:54,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:54,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080715574] [2022-11-16 12:22:54,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080715574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:54,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:54,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:22:54,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878609426] [2022-11-16 12:22:54,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:54,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:22:54,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:54,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:22:54,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:22:54,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:22:54,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 246 transitions, 1108 flow. Second operand has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:54,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:54,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:22:54,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:22:55,651 INFO L130 PetriNetUnfolder]: 299/1590 cut-off events. [2022-11-16 12:22:55,652 INFO L131 PetriNetUnfolder]: For 2810/2810 co-relation queries the response was YES. [2022-11-16 12:22:55,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3563 conditions, 1590 events. 299/1590 cut-off events. For 2810/2810 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13647 event pairs, 181 based on Foata normal form. 1/1489 useless extension candidates. Maximal degree in co-relation 3509. Up to 427 conditions per place. [2022-11-16 12:22:55,675 INFO L137 encePairwiseOnDemand]: 211/220 looper letters, 61 selfloop transitions, 32 changer transitions 17/276 dead transitions. [2022-11-16 12:22:55,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 276 transitions, 1496 flow [2022-11-16 12:22:55,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:22:55,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:22:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2219 transitions. [2022-11-16 12:22:55,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8405303030303031 [2022-11-16 12:22:55,680 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2219 transitions. [2022-11-16 12:22:55,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2219 transitions. [2022-11-16 12:22:55,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:22:55,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2219 transitions. [2022-11-16 12:22:55,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 184.91666666666666) internal successors, (2219), 12 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:55,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 220.0) internal successors, (2860), 13 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:55,708 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 220.0) internal successors, (2860), 13 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:55,708 INFO L175 Difference]: Start difference. First operand has 273 places, 246 transitions, 1108 flow. Second operand 12 states and 2219 transitions. [2022-11-16 12:22:55,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 276 transitions, 1496 flow [2022-11-16 12:22:55,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 276 transitions, 1436 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-11-16 12:22:55,730 INFO L231 Difference]: Finished difference. Result has 284 places, 252 transitions, 1240 flow [2022-11-16 12:22:55,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1240, PETRI_PLACES=284, PETRI_TRANSITIONS=252} [2022-11-16 12:22:55,733 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 82 predicate places. [2022-11-16 12:22:55,734 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 252 transitions, 1240 flow [2022-11-16 12:22:55,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:55,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:55,735 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:55,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:22:55,736 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:22:55,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash -458231154, now seen corresponding path program 1 times [2022-11-16 12:22:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:55,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325396963] [2022-11-16 12:22:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:55,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:55,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:55,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:55,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325396963] [2022-11-16 12:22:55,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325396963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:55,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:55,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:22:55,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519772813] [2022-11-16 12:22:55,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:55,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:22:55,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:55,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:22:55,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:22:55,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 220 [2022-11-16 12:22:55,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 252 transitions, 1240 flow. Second operand has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:55,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:55,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 220 [2022-11-16 12:22:55,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:22:56,696 INFO L130 PetriNetUnfolder]: 198/2684 cut-off events. [2022-11-16 12:22:56,696 INFO L131 PetriNetUnfolder]: For 5851/6074 co-relation queries the response was YES. [2022-11-16 12:22:56,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6102 conditions, 2684 events. 198/2684 cut-off events. For 5851/6074 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 28025 event pairs, 36 based on Foata normal form. 8/2538 useless extension candidates. Maximal degree in co-relation 6024. Up to 141 conditions per place. [2022-11-16 12:22:56,785 INFO L137 encePairwiseOnDemand]: 206/220 looper letters, 54 selfloop transitions, 18 changer transitions 4/303 dead transitions. [2022-11-16 12:22:56,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 303 transitions, 1541 flow [2022-11-16 12:22:56,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:22:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:22:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1733 transitions. [2022-11-16 12:22:56,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8752525252525253 [2022-11-16 12:22:56,792 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1733 transitions. [2022-11-16 12:22:56,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1733 transitions. [2022-11-16 12:22:56,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:22:56,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1733 transitions. [2022-11-16 12:22:56,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.55555555555554) internal successors, (1733), 9 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:56,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 220.0) internal successors, (2200), 10 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:56,803 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 220.0) internal successors, (2200), 10 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:56,803 INFO L175 Difference]: Start difference. First operand has 284 places, 252 transitions, 1240 flow. Second operand 9 states and 1733 transitions. [2022-11-16 12:22:56,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 303 transitions, 1541 flow [2022-11-16 12:22:56,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 303 transitions, 1471 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-11-16 12:22:56,865 INFO L231 Difference]: Finished difference. Result has 292 places, 268 transitions, 1299 flow [2022-11-16 12:22:56,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1299, PETRI_PLACES=292, PETRI_TRANSITIONS=268} [2022-11-16 12:22:56,867 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 90 predicate places. [2022-11-16 12:22:56,867 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 268 transitions, 1299 flow [2022-11-16 12:22:56,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:56,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:56,868 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:56,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:22:56,869 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:22:56,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:56,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1321258548, now seen corresponding path program 1 times [2022-11-16 12:22:56,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:56,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023702223] [2022-11-16 12:22:56,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:56,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:56,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:56,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023702223] [2022-11-16 12:22:56,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023702223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:56,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:56,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:22:56,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742111981] [2022-11-16 12:22:56,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:56,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:22:56,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:56,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:22:56,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:22:56,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 220 [2022-11-16 12:22:56,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 268 transitions, 1299 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:56,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:56,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 220 [2022-11-16 12:22:56,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:22:57,719 INFO L130 PetriNetUnfolder]: 240/2935 cut-off events. [2022-11-16 12:22:57,719 INFO L131 PetriNetUnfolder]: For 5817/5964 co-relation queries the response was YES. [2022-11-16 12:22:57,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 2935 events. 240/2935 cut-off events. For 5817/5964 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 31763 event pairs, 38 based on Foata normal form. 0/2796 useless extension candidates. Maximal degree in co-relation 6940. Up to 188 conditions per place. [2022-11-16 12:22:57,766 INFO L137 encePairwiseOnDemand]: 214/220 looper letters, 15 selfloop transitions, 4 changer transitions 0/275 dead transitions. [2022-11-16 12:22:57,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 275 transitions, 1356 flow [2022-11-16 12:22:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:22:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:22:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2022-11-16 12:22:57,769 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9363636363636364 [2022-11-16 12:22:57,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2022-11-16 12:22:57,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2022-11-16 12:22:57,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:22:57,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2022-11-16 12:22:57,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:57,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:57,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:57,773 INFO L175 Difference]: Start difference. First operand has 292 places, 268 transitions, 1299 flow. Second operand 3 states and 618 transitions. [2022-11-16 12:22:57,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 275 transitions, 1356 flow [2022-11-16 12:22:57,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 275 transitions, 1352 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 12:22:57,835 INFO L231 Difference]: Finished difference. Result has 292 places, 270 transitions, 1323 flow [2022-11-16 12:22:57,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1323, PETRI_PLACES=292, PETRI_TRANSITIONS=270} [2022-11-16 12:22:57,837 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 90 predicate places. [2022-11-16 12:22:57,837 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 270 transitions, 1323 flow [2022-11-16 12:22:57,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:57,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:57,838 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:57,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:22:57,838 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:22:57,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:57,839 INFO L85 PathProgramCache]: Analyzing trace with hash -708455474, now seen corresponding path program 2 times [2022-11-16 12:22:57,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:57,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619612772] [2022-11-16 12:22:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:57,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:57,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:57,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619612772] [2022-11-16 12:22:57,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619612772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:57,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:57,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:22:57,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22631248] [2022-11-16 12:22:57,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:57,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:22:57,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:57,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:22:57,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:22:57,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 220 [2022-11-16 12:22:57,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 270 transitions, 1323 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:57,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:57,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 220 [2022-11-16 12:22:57,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:22:58,342 INFO L130 PetriNetUnfolder]: 158/2149 cut-off events. [2022-11-16 12:22:58,344 INFO L131 PetriNetUnfolder]: For 3668/3727 co-relation queries the response was YES. [2022-11-16 12:22:58,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5064 conditions, 2149 events. 158/2149 cut-off events. For 3668/3727 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 21171 event pairs, 25 based on Foata normal form. 7/2068 useless extension candidates. Maximal degree in co-relation 4824. Up to 130 conditions per place. [2022-11-16 12:22:58,376 INFO L137 encePairwiseOnDemand]: 216/220 looper letters, 19 selfloop transitions, 2 changer transitions 3/277 dead transitions. [2022-11-16 12:22:58,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 277 transitions, 1388 flow [2022-11-16 12:22:58,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:22:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:22:58,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2022-11-16 12:22:58,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9363636363636364 [2022-11-16 12:22:58,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2022-11-16 12:22:58,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2022-11-16 12:22:58,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:22:58,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2022-11-16 12:22:58,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:58,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:58,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:58,383 INFO L175 Difference]: Start difference. First operand has 292 places, 270 transitions, 1323 flow. Second operand 3 states and 618 transitions. [2022-11-16 12:22:58,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 277 transitions, 1388 flow [2022-11-16 12:22:58,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 277 transitions, 1380 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:22:58,420 INFO L231 Difference]: Finished difference. Result has 294 places, 269 transitions, 1325 flow [2022-11-16 12:22:58,421 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1325, PETRI_PLACES=294, PETRI_TRANSITIONS=269} [2022-11-16 12:22:58,421 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 92 predicate places. [2022-11-16 12:22:58,421 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 269 transitions, 1325 flow [2022-11-16 12:22:58,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:58,422 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:58,422 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:58,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:22:58,423 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:22:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:58,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2008515486, now seen corresponding path program 2 times [2022-11-16 12:22:58,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:58,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7821860] [2022-11-16 12:22:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:58,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:58,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:58,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7821860] [2022-11-16 12:22:58,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7821860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:58,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:58,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:22:58,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580969927] [2022-11-16 12:22:58,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:58,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:22:58,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:58,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:22:58,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:22:58,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 220 [2022-11-16 12:22:58,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 269 transitions, 1325 flow. Second operand has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:58,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:58,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 220 [2022-11-16 12:22:58,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:22:59,271 INFO L130 PetriNetUnfolder]: 138/1929 cut-off events. [2022-11-16 12:22:59,272 INFO L131 PetriNetUnfolder]: For 3363/3556 co-relation queries the response was YES. [2022-11-16 12:22:59,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4417 conditions, 1929 events. 138/1929 cut-off events. For 3363/3556 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 18420 event pairs, 35 based on Foata normal form. 11/1847 useless extension candidates. Maximal degree in co-relation 4164. Up to 175 conditions per place. [2022-11-16 12:22:59,304 INFO L137 encePairwiseOnDemand]: 210/220 looper letters, 52 selfloop transitions, 8 changer transitions 5/296 dead transitions. [2022-11-16 12:22:59,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 296 transitions, 1558 flow [2022-11-16 12:22:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:22:59,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:22:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1527 transitions. [2022-11-16 12:22:59,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8676136363636363 [2022-11-16 12:22:59,323 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1527 transitions. [2022-11-16 12:22:59,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1527 transitions. [2022-11-16 12:22:59,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:22:59,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1527 transitions. [2022-11-16 12:22:59,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 190.875) internal successors, (1527), 8 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:59,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:59,347 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:59,347 INFO L175 Difference]: Start difference. First operand has 294 places, 269 transitions, 1325 flow. Second operand 8 states and 1527 transitions. [2022-11-16 12:22:59,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 296 transitions, 1558 flow [2022-11-16 12:22:59,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 296 transitions, 1552 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-16 12:22:59,415 INFO L231 Difference]: Finished difference. Result has 307 places, 274 transitions, 1397 flow [2022-11-16 12:22:59,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1397, PETRI_PLACES=307, PETRI_TRANSITIONS=274} [2022-11-16 12:22:59,416 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 105 predicate places. [2022-11-16 12:22:59,416 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 274 transitions, 1397 flow [2022-11-16 12:22:59,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:59,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:22:59,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:59,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:22:59,418 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:22:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:59,419 INFO L85 PathProgramCache]: Analyzing trace with hash 161812212, now seen corresponding path program 3 times [2022-11-16 12:22:59,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:59,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058589046] [2022-11-16 12:22:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:59,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:59,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:59,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058589046] [2022-11-16 12:22:59,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058589046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:59,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:59,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:22:59,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784775733] [2022-11-16 12:22:59,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:59,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:22:59,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:59,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:22:59,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:22:59,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 220 [2022-11-16 12:22:59,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 274 transitions, 1397 flow. Second operand has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:59,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:22:59,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 220 [2022-11-16 12:22:59,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:00,233 INFO L130 PetriNetUnfolder]: 143/2019 cut-off events. [2022-11-16 12:23:00,233 INFO L131 PetriNetUnfolder]: For 3565/3752 co-relation queries the response was YES. [2022-11-16 12:23:00,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4652 conditions, 2019 events. 143/2019 cut-off events. For 3565/3752 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 19394 event pairs, 35 based on Foata normal form. 8/1927 useless extension candidates. Maximal degree in co-relation 4434. Up to 174 conditions per place. [2022-11-16 12:23:00,275 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 42 selfloop transitions, 12 changer transitions 11/296 dead transitions. [2022-11-16 12:23:00,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 296 transitions, 1624 flow [2022-11-16 12:23:00,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:23:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:23:00,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1527 transitions. [2022-11-16 12:23:00,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8676136363636363 [2022-11-16 12:23:00,282 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1527 transitions. [2022-11-16 12:23:00,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1527 transitions. [2022-11-16 12:23:00,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:00,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1527 transitions. [2022-11-16 12:23:00,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 190.875) internal successors, (1527), 8 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:00,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:00,292 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:00,292 INFO L175 Difference]: Start difference. First operand has 307 places, 274 transitions, 1397 flow. Second operand 8 states and 1527 transitions. [2022-11-16 12:23:00,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 296 transitions, 1624 flow [2022-11-16 12:23:00,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 296 transitions, 1614 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-16 12:23:00,324 INFO L231 Difference]: Finished difference. Result has 314 places, 272 transitions, 1422 flow [2022-11-16 12:23:00,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1422, PETRI_PLACES=314, PETRI_TRANSITIONS=272} [2022-11-16 12:23:00,325 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 112 predicate places. [2022-11-16 12:23:00,326 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 272 transitions, 1422 flow [2022-11-16 12:23:00,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:00,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:00,326 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:00,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:23:00,327 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:00,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:00,328 INFO L85 PathProgramCache]: Analyzing trace with hash 319903025, now seen corresponding path program 1 times [2022-11-16 12:23:00,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:00,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518480646] [2022-11-16 12:23:00,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:00,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:00,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:00,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518480646] [2022-11-16 12:23:00,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518480646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:00,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:00,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:23:00,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343520809] [2022-11-16 12:23:00,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:00,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:23:00,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:00,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:23:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:23:00,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 220 [2022-11-16 12:23:00,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 272 transitions, 1422 flow. Second operand has 7 states, 7 states have (on average 189.85714285714286) internal successors, (1329), 7 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:00,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:00,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 220 [2022-11-16 12:23:00,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:00,844 INFO L130 PetriNetUnfolder]: 70/1073 cut-off events. [2022-11-16 12:23:00,844 INFO L131 PetriNetUnfolder]: For 1715/1843 co-relation queries the response was YES. [2022-11-16 12:23:00,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2315 conditions, 1073 events. 70/1073 cut-off events. For 1715/1843 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 8405 event pairs, 14 based on Foata normal form. 6/1019 useless extension candidates. Maximal degree in co-relation 2217. Up to 66 conditions per place. [2022-11-16 12:23:00,860 INFO L137 encePairwiseOnDemand]: 212/220 looper letters, 25 selfloop transitions, 1 changer transitions 26/292 dead transitions. [2022-11-16 12:23:00,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 292 transitions, 1594 flow [2022-11-16 12:23:00,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:23:00,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:23:00,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1726 transitions. [2022-11-16 12:23:00,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8717171717171717 [2022-11-16 12:23:00,864 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1726 transitions. [2022-11-16 12:23:00,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1726 transitions. [2022-11-16 12:23:00,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:00,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1726 transitions. [2022-11-16 12:23:00,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.77777777777777) internal successors, (1726), 9 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:00,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 220.0) internal successors, (2200), 10 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:00,873 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 220.0) internal successors, (2200), 10 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:00,874 INFO L175 Difference]: Start difference. First operand has 314 places, 272 transitions, 1422 flow. Second operand 9 states and 1726 transitions. [2022-11-16 12:23:00,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 292 transitions, 1594 flow [2022-11-16 12:23:00,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 292 transitions, 1519 flow, removed 13 selfloop flow, removed 15 redundant places. [2022-11-16 12:23:00,894 INFO L231 Difference]: Finished difference. Result has 310 places, 266 transitions, 1332 flow [2022-11-16 12:23:00,895 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1332, PETRI_PLACES=310, PETRI_TRANSITIONS=266} [2022-11-16 12:23:00,896 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 108 predicate places. [2022-11-16 12:23:00,896 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 266 transitions, 1332 flow [2022-11-16 12:23:00,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 189.85714285714286) internal successors, (1329), 7 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:00,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:00,897 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:00,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:23:00,898 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:00,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash -584166186, now seen corresponding path program 1 times [2022-11-16 12:23:00,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:00,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922295752] [2022-11-16 12:23:00,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:00,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:00,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:00,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922295752] [2022-11-16 12:23:00,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922295752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:00,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:00,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:00,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140769183] [2022-11-16 12:23:00,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:00,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:00,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:00,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:00,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:00,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 220 [2022-11-16 12:23:00,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 266 transitions, 1332 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:00,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:00,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 220 [2022-11-16 12:23:00,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:01,117 INFO L130 PetriNetUnfolder]: 49/793 cut-off events. [2022-11-16 12:23:01,117 INFO L131 PetriNetUnfolder]: For 1289/1408 co-relation queries the response was YES. [2022-11-16 12:23:01,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1724 conditions, 793 events. 49/793 cut-off events. For 1289/1408 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5358 event pairs, 8 based on Foata normal form. 2/748 useless extension candidates. Maximal degree in co-relation 1672. Up to 39 conditions per place. [2022-11-16 12:23:01,129 INFO L137 encePairwiseOnDemand]: 214/220 looper letters, 12 selfloop transitions, 4 changer transitions 4/264 dead transitions. [2022-11-16 12:23:01,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 264 transitions, 1343 flow [2022-11-16 12:23:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:23:01,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2022-11-16 12:23:01,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9287878787878788 [2022-11-16 12:23:01,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2022-11-16 12:23:01,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2022-11-16 12:23:01,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:01,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2022-11-16 12:23:01,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:01,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:01,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:01,136 INFO L175 Difference]: Start difference. First operand has 310 places, 266 transitions, 1332 flow. Second operand 3 states and 613 transitions. [2022-11-16 12:23:01,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 264 transitions, 1343 flow [2022-11-16 12:23:01,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 264 transitions, 1324 flow, removed 7 selfloop flow, removed 9 redundant places. [2022-11-16 12:23:01,153 INFO L231 Difference]: Finished difference. Result has 295 places, 260 transitions, 1281 flow [2022-11-16 12:23:01,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1281, PETRI_PLACES=295, PETRI_TRANSITIONS=260} [2022-11-16 12:23:01,154 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 93 predicate places. [2022-11-16 12:23:01,154 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 260 transitions, 1281 flow [2022-11-16 12:23:01,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:01,155 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:01,155 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:01,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:23:01,156 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:01,156 INFO L85 PathProgramCache]: Analyzing trace with hash 223589941, now seen corresponding path program 1 times [2022-11-16 12:23:01,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:01,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081496791] [2022-11-16 12:23:01,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:01,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:01,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:01,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081496791] [2022-11-16 12:23:01,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081496791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:01,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:01,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:01,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224072891] [2022-11-16 12:23:01,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:01,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:01,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:01,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:01,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:01,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:01,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 260 transitions, 1281 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:01,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:01,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:01,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:02,479 INFO L130 PetriNetUnfolder]: 667/2197 cut-off events. [2022-11-16 12:23:02,480 INFO L131 PetriNetUnfolder]: For 4569/4602 co-relation queries the response was YES. [2022-11-16 12:23:02,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 2197 events. 667/2197 cut-off events. For 4569/4602 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 18135 event pairs, 326 based on Foata normal form. 1/2025 useless extension candidates. Maximal degree in co-relation 5774. Up to 857 conditions per place. [2022-11-16 12:23:02,505 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 147 selfloop transitions, 30 changer transitions 28/379 dead transitions. [2022-11-16 12:23:02,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 379 transitions, 2270 flow [2022-11-16 12:23:02,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:23:02,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:23:02,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4436 transitions. [2022-11-16 12:23:02,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8401515151515152 [2022-11-16 12:23:02,512 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4436 transitions. [2022-11-16 12:23:02,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4436 transitions. [2022-11-16 12:23:02,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:02,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4436 transitions. [2022-11-16 12:23:02,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 184.83333333333334) internal successors, (4436), 24 states have internal predecessors, (4436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:02,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 220.0) internal successors, (5500), 25 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:02,531 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 220.0) internal successors, (5500), 25 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:02,531 INFO L175 Difference]: Start difference. First operand has 295 places, 260 transitions, 1281 flow. Second operand 24 states and 4436 transitions. [2022-11-16 12:23:02,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 379 transitions, 2270 flow [2022-11-16 12:23:02,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 379 transitions, 2254 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-16 12:23:02,560 INFO L231 Difference]: Finished difference. Result has 334 places, 289 transitions, 1525 flow [2022-11-16 12:23:02,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1525, PETRI_PLACES=334, PETRI_TRANSITIONS=289} [2022-11-16 12:23:02,561 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 132 predicate places. [2022-11-16 12:23:02,561 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 289 transitions, 1525 flow [2022-11-16 12:23:02,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:02,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:02,562 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:02,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:23:02,563 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:02,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:02,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1447591949, now seen corresponding path program 2 times [2022-11-16 12:23:02,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:02,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617390111] [2022-11-16 12:23:02,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:02,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:02,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:02,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617390111] [2022-11-16 12:23:02,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617390111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:02,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:02,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:02,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680413985] [2022-11-16 12:23:02,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:02,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:02,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:02,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:02,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:02,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:02,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 289 transitions, 1525 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:02,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:02,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:02,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:04,132 INFO L130 PetriNetUnfolder]: 1008/3177 cut-off events. [2022-11-16 12:23:04,133 INFO L131 PetriNetUnfolder]: For 11545/11576 co-relation queries the response was YES. [2022-11-16 12:23:04,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11204 conditions, 3177 events. 1008/3177 cut-off events. For 11545/11576 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 28321 event pairs, 515 based on Foata normal form. 2/2976 useless extension candidates. Maximal degree in co-relation 11140. Up to 1184 conditions per place. [2022-11-16 12:23:04,177 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 110 selfloop transitions, 45 changer transitions 103/425 dead transitions. [2022-11-16 12:23:04,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 425 transitions, 2887 flow [2022-11-16 12:23:04,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:23:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:23:04,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4433 transitions. [2022-11-16 12:23:04,186 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8395833333333333 [2022-11-16 12:23:04,187 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4433 transitions. [2022-11-16 12:23:04,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4433 transitions. [2022-11-16 12:23:04,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:04,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4433 transitions. [2022-11-16 12:23:04,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 184.70833333333334) internal successors, (4433), 24 states have internal predecessors, (4433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:04,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 220.0) internal successors, (5500), 25 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:04,210 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 220.0) internal successors, (5500), 25 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:04,210 INFO L175 Difference]: Start difference. First operand has 334 places, 289 transitions, 1525 flow. Second operand 24 states and 4433 transitions. [2022-11-16 12:23:04,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 425 transitions, 2887 flow [2022-11-16 12:23:04,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 425 transitions, 2801 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-11-16 12:23:04,317 INFO L231 Difference]: Finished difference. Result has 373 places, 256 transitions, 1182 flow [2022-11-16 12:23:04,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1182, PETRI_PLACES=373, PETRI_TRANSITIONS=256} [2022-11-16 12:23:04,318 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 171 predicate places. [2022-11-16 12:23:04,318 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 256 transitions, 1182 flow [2022-11-16 12:23:04,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:04,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:04,319 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:04,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:23:04,320 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:04,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:04,320 INFO L85 PathProgramCache]: Analyzing trace with hash 487708427, now seen corresponding path program 3 times [2022-11-16 12:23:04,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:04,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758933069] [2022-11-16 12:23:04,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:04,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:04,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:04,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758933069] [2022-11-16 12:23:04,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758933069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:04,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:04,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:04,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587134061] [2022-11-16 12:23:04,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:04,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:04,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:04,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:04,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:04,737 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:04,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 256 transitions, 1182 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:04,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:04,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:04,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:06,003 INFO L130 PetriNetUnfolder]: 839/2770 cut-off events. [2022-11-16 12:23:06,004 INFO L131 PetriNetUnfolder]: For 15426/15590 co-relation queries the response was YES. [2022-11-16 12:23:06,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10836 conditions, 2770 events. 839/2770 cut-off events. For 15426/15590 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 23738 event pairs, 401 based on Foata normal form. 10/2593 useless extension candidates. Maximal degree in co-relation 10753. Up to 906 conditions per place. [2022-11-16 12:23:06,091 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 104 selfloop transitions, 56 changer transitions 24/351 dead transitions. [2022-11-16 12:23:06,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 351 transitions, 2490 flow [2022-11-16 12:23:06,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:23:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:23:06,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4056 transitions. [2022-11-16 12:23:06,102 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8380165289256198 [2022-11-16 12:23:06,102 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4056 transitions. [2022-11-16 12:23:06,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4056 transitions. [2022-11-16 12:23:06,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:06,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4056 transitions. [2022-11-16 12:23:06,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 184.36363636363637) internal successors, (4056), 22 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:06,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 220.0) internal successors, (5060), 23 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:06,126 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 220.0) internal successors, (5060), 23 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:06,127 INFO L175 Difference]: Start difference. First operand has 373 places, 256 transitions, 1182 flow. Second operand 22 states and 4056 transitions. [2022-11-16 12:23:06,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 351 transitions, 2490 flow [2022-11-16 12:23:06,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 351 transitions, 2095 flow, removed 182 selfloop flow, removed 24 redundant places. [2022-11-16 12:23:06,273 INFO L231 Difference]: Finished difference. Result has 334 places, 286 transitions, 1568 flow [2022-11-16 12:23:06,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1568, PETRI_PLACES=334, PETRI_TRANSITIONS=286} [2022-11-16 12:23:06,274 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 132 predicate places. [2022-11-16 12:23:06,275 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 286 transitions, 1568 flow [2022-11-16 12:23:06,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:06,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:06,276 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:06,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:23:06,277 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:06,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1696774191, now seen corresponding path program 4 times [2022-11-16 12:23:06,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:06,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663340315] [2022-11-16 12:23:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:06,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:06,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:06,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663340315] [2022-11-16 12:23:06,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663340315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:06,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:06,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:06,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926466749] [2022-11-16 12:23:06,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:06,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:06,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:06,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:06,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:06,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:06,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 286 transitions, 1568 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:06,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:06,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:06,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:07,605 INFO L130 PetriNetUnfolder]: 863/2768 cut-off events. [2022-11-16 12:23:07,605 INFO L131 PetriNetUnfolder]: For 14747/14770 co-relation queries the response was YES. [2022-11-16 12:23:07,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10877 conditions, 2768 events. 863/2768 cut-off events. For 14747/14770 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 23863 event pairs, 417 based on Foata normal form. 1/2559 useless extension candidates. Maximal degree in co-relation 10801. Up to 989 conditions per place. [2022-11-16 12:23:07,655 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 108 selfloop transitions, 65 changer transitions 14/354 dead transitions. [2022-11-16 12:23:07,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 354 transitions, 2563 flow [2022-11-16 12:23:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:23:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:23:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2959 transitions. [2022-11-16 12:23:07,659 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.840625 [2022-11-16 12:23:07,660 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2959 transitions. [2022-11-16 12:23:07,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2959 transitions. [2022-11-16 12:23:07,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:07,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2959 transitions. [2022-11-16 12:23:07,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 184.9375) internal successors, (2959), 16 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:07,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:07,673 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:07,673 INFO L175 Difference]: Start difference. First operand has 334 places, 286 transitions, 1568 flow. Second operand 16 states and 2959 transitions. [2022-11-16 12:23:07,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 354 transitions, 2563 flow [2022-11-16 12:23:07,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 354 transitions, 2303 flow, removed 128 selfloop flow, removed 3 redundant places. [2022-11-16 12:23:07,801 INFO L231 Difference]: Finished difference. Result has 353 places, 303 transitions, 1802 flow [2022-11-16 12:23:07,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1802, PETRI_PLACES=353, PETRI_TRANSITIONS=303} [2022-11-16 12:23:07,802 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 151 predicate places. [2022-11-16 12:23:07,802 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 303 transitions, 1802 flow [2022-11-16 12:23:07,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:07,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:07,803 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:07,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:23:07,804 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:07,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:07,804 INFO L85 PathProgramCache]: Analyzing trace with hash -251728005, now seen corresponding path program 5 times [2022-11-16 12:23:07,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:07,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504817592] [2022-11-16 12:23:07,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:07,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:08,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:08,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504817592] [2022-11-16 12:23:08,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504817592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:08,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:08,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:08,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200841535] [2022-11-16 12:23:08,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:08,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:08,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:08,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:08,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:08,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:08,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 303 transitions, 1802 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:08,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:08,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:08,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:09,304 INFO L130 PetriNetUnfolder]: 986/3297 cut-off events. [2022-11-16 12:23:09,305 INFO L131 PetriNetUnfolder]: For 23650/23668 co-relation queries the response was YES. [2022-11-16 12:23:09,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13606 conditions, 3297 events. 986/3297 cut-off events. For 23650/23668 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 29482 event pairs, 591 based on Foata normal form. 1/3057 useless extension candidates. Maximal degree in co-relation 13523. Up to 1063 conditions per place. [2022-11-16 12:23:09,386 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 133 selfloop transitions, 62 changer transitions 22/384 dead transitions. [2022-11-16 12:23:09,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 384 transitions, 3136 flow [2022-11-16 12:23:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:23:09,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 12:23:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3691 transitions. [2022-11-16 12:23:09,392 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8388636363636364 [2022-11-16 12:23:09,392 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3691 transitions. [2022-11-16 12:23:09,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3691 transitions. [2022-11-16 12:23:09,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:09,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3691 transitions. [2022-11-16 12:23:09,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 184.55) internal successors, (3691), 20 states have internal predecessors, (3691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:09,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 220.0) internal successors, (4620), 21 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:09,410 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 220.0) internal successors, (4620), 21 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:09,410 INFO L175 Difference]: Start difference. First operand has 353 places, 303 transitions, 1802 flow. Second operand 20 states and 3691 transitions. [2022-11-16 12:23:09,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 384 transitions, 3136 flow [2022-11-16 12:23:09,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 384 transitions, 2995 flow, removed 58 selfloop flow, removed 3 redundant places. [2022-11-16 12:23:09,587 INFO L231 Difference]: Finished difference. Result has 382 places, 335 transitions, 2444 flow [2022-11-16 12:23:09,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2444, PETRI_PLACES=382, PETRI_TRANSITIONS=335} [2022-11-16 12:23:09,588 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 180 predicate places. [2022-11-16 12:23:09,588 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 335 transitions, 2444 flow [2022-11-16 12:23:09,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:09,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:09,590 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:09,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:23:09,590 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:09,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:09,591 INFO L85 PathProgramCache]: Analyzing trace with hash -439169997, now seen corresponding path program 6 times [2022-11-16 12:23:09,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:09,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214192088] [2022-11-16 12:23:09,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:09,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:09,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:09,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214192088] [2022-11-16 12:23:09,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214192088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:09,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:09,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:09,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708106021] [2022-11-16 12:23:09,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:09,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:09,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:09,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:09,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:09,918 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:09,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 335 transitions, 2444 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:09,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:09,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:09,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:11,068 INFO L130 PetriNetUnfolder]: 1025/3433 cut-off events. [2022-11-16 12:23:11,068 INFO L131 PetriNetUnfolder]: For 33153/33366 co-relation queries the response was YES. [2022-11-16 12:23:11,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15644 conditions, 3433 events. 1025/3433 cut-off events. For 33153/33366 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 31076 event pairs, 523 based on Foata normal form. 1/3165 useless extension candidates. Maximal degree in co-relation 15548. Up to 1114 conditions per place. [2022-11-16 12:23:11,141 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 144 selfloop transitions, 86 changer transitions 19/416 dead transitions. [2022-11-16 12:23:11,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 416 transitions, 3937 flow [2022-11-16 12:23:11,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:23:11,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 12:23:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3688 transitions. [2022-11-16 12:23:11,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8381818181818181 [2022-11-16 12:23:11,149 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3688 transitions. [2022-11-16 12:23:11,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3688 transitions. [2022-11-16 12:23:11,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:11,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3688 transitions. [2022-11-16 12:23:11,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 184.4) internal successors, (3688), 20 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:11,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 220.0) internal successors, (4620), 21 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:11,166 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 220.0) internal successors, (4620), 21 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:11,166 INFO L175 Difference]: Start difference. First operand has 382 places, 335 transitions, 2444 flow. Second operand 20 states and 3688 transitions. [2022-11-16 12:23:11,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 416 transitions, 3937 flow [2022-11-16 12:23:11,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 416 transitions, 3545 flow, removed 196 selfloop flow, removed 2 redundant places. [2022-11-16 12:23:11,444 INFO L231 Difference]: Finished difference. Result has 412 places, 367 transitions, 3037 flow [2022-11-16 12:23:11,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3037, PETRI_PLACES=412, PETRI_TRANSITIONS=367} [2022-11-16 12:23:11,445 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 210 predicate places. [2022-11-16 12:23:11,446 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 367 transitions, 3037 flow [2022-11-16 12:23:11,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:11,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:11,447 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:11,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:23:11,447 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1288516689, now seen corresponding path program 7 times [2022-11-16 12:23:11,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:11,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276700316] [2022-11-16 12:23:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:11,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:11,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276700316] [2022-11-16 12:23:11,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276700316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:11,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:11,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:11,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912572985] [2022-11-16 12:23:11,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:11,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:11,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:11,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:11,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:11,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 367 transitions, 3037 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:11,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:11,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:11,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:13,128 INFO L130 PetriNetUnfolder]: 1022/3385 cut-off events. [2022-11-16 12:23:13,128 INFO L131 PetriNetUnfolder]: For 30537/30556 co-relation queries the response was YES. [2022-11-16 12:23:13,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15826 conditions, 3385 events. 1022/3385 cut-off events. For 30537/30556 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 30631 event pairs, 444 based on Foata normal form. 1/3125 useless extension candidates. Maximal degree in co-relation 15716. Up to 1108 conditions per place. [2022-11-16 12:23:13,177 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 139 selfloop transitions, 101 changer transitions 23/430 dead transitions. [2022-11-16 12:23:13,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 430 transitions, 4185 flow [2022-11-16 12:23:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:23:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:23:13,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3324 transitions. [2022-11-16 12:23:13,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8393939393939394 [2022-11-16 12:23:13,183 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3324 transitions. [2022-11-16 12:23:13,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3324 transitions. [2022-11-16 12:23:13,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:13,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3324 transitions. [2022-11-16 12:23:13,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.66666666666666) internal successors, (3324), 18 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:13,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:13,198 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:13,198 INFO L175 Difference]: Start difference. First operand has 412 places, 367 transitions, 3037 flow. Second operand 18 states and 3324 transitions. [2022-11-16 12:23:13,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 430 transitions, 4185 flow [2022-11-16 12:23:13,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 430 transitions, 3851 flow, removed 167 selfloop flow, removed 2 redundant places. [2022-11-16 12:23:13,589 INFO L231 Difference]: Finished difference. Result has 433 places, 377 transitions, 3250 flow [2022-11-16 12:23:13,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=2831, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3250, PETRI_PLACES=433, PETRI_TRANSITIONS=377} [2022-11-16 12:23:13,591 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 231 predicate places. [2022-11-16 12:23:13,591 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 377 transitions, 3250 flow [2022-11-16 12:23:13,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:13,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:13,592 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:13,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:23:13,592 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:13,593 INFO L85 PathProgramCache]: Analyzing trace with hash -941180795, now seen corresponding path program 8 times [2022-11-16 12:23:13,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:13,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179816173] [2022-11-16 12:23:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:13,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:13,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:13,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179816173] [2022-11-16 12:23:13,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179816173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:13,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:13,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:13,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207860410] [2022-11-16 12:23:13,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:13,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:13,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:13,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:13,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:13,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:13,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 377 transitions, 3250 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:13,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:13,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:13,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:15,447 INFO L130 PetriNetUnfolder]: 1080/3694 cut-off events. [2022-11-16 12:23:15,448 INFO L131 PetriNetUnfolder]: For 29278/29516 co-relation queries the response was YES. [2022-11-16 12:23:15,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16815 conditions, 3694 events. 1080/3694 cut-off events. For 29278/29516 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 34482 event pairs, 553 based on Foata normal form. 1/3403 useless extension candidates. Maximal degree in co-relation 16698. Up to 1157 conditions per place. [2022-11-16 12:23:15,500 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 158 selfloop transitions, 100 changer transitions 16/441 dead transitions. [2022-11-16 12:23:15,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 441 transitions, 4503 flow [2022-11-16 12:23:15,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:23:15,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:23:15,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3143 transitions. [2022-11-16 12:23:15,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8403743315508021 [2022-11-16 12:23:15,505 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3143 transitions. [2022-11-16 12:23:15,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3143 transitions. [2022-11-16 12:23:15,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:15,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3143 transitions. [2022-11-16 12:23:15,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 184.88235294117646) internal successors, (3143), 17 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:15,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:15,517 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:15,518 INFO L175 Difference]: Start difference. First operand has 433 places, 377 transitions, 3250 flow. Second operand 17 states and 3143 transitions. [2022-11-16 12:23:15,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 441 transitions, 4503 flow [2022-11-16 12:23:15,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 441 transitions, 4400 flow, removed 33 selfloop flow, removed 3 redundant places. [2022-11-16 12:23:15,810 INFO L231 Difference]: Finished difference. Result has 453 places, 398 transitions, 3826 flow [2022-11-16 12:23:15,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=3156, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3826, PETRI_PLACES=453, PETRI_TRANSITIONS=398} [2022-11-16 12:23:15,811 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 251 predicate places. [2022-11-16 12:23:15,811 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 398 transitions, 3826 flow [2022-11-16 12:23:15,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:15,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:15,812 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:15,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:23:15,813 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:15,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1418743075, now seen corresponding path program 9 times [2022-11-16 12:23:15,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:15,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361823737] [2022-11-16 12:23:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:15,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:16,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:16,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361823737] [2022-11-16 12:23:16,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361823737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:16,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:16,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:16,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952732577] [2022-11-16 12:23:16,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:16,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:16,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:16,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:16,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:16,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:16,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 398 transitions, 3826 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:16,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:16,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:16,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:17,831 INFO L130 PetriNetUnfolder]: 1114/3786 cut-off events. [2022-11-16 12:23:17,831 INFO L131 PetriNetUnfolder]: For 31924/31943 co-relation queries the response was YES. [2022-11-16 12:23:17,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18422 conditions, 3786 events. 1114/3786 cut-off events. For 31924/31943 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 35613 event pairs, 500 based on Foata normal form. 1/3488 useless extension candidates. Maximal degree in co-relation 18297. Up to 1213 conditions per place. [2022-11-16 12:23:17,890 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 184 selfloop transitions, 92 changer transitions 15/458 dead transitions. [2022-11-16 12:23:17,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 458 transitions, 5128 flow [2022-11-16 12:23:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:23:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:23:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3143 transitions. [2022-11-16 12:23:17,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8403743315508021 [2022-11-16 12:23:17,896 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3143 transitions. [2022-11-16 12:23:17,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3143 transitions. [2022-11-16 12:23:17,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:17,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3143 transitions. [2022-11-16 12:23:17,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 184.88235294117646) internal successors, (3143), 17 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:17,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:17,910 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:17,911 INFO L175 Difference]: Start difference. First operand has 453 places, 398 transitions, 3826 flow. Second operand 17 states and 3143 transitions. [2022-11-16 12:23:17,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 458 transitions, 5128 flow [2022-11-16 12:23:18,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 458 transitions, 4966 flow, removed 81 selfloop flow, removed 2 redundant places. [2022-11-16 12:23:18,314 INFO L231 Difference]: Finished difference. Result has 475 places, 419 transitions, 4399 flow [2022-11-16 12:23:18,315 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=3676, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4399, PETRI_PLACES=475, PETRI_TRANSITIONS=419} [2022-11-16 12:23:18,316 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 273 predicate places. [2022-11-16 12:23:18,316 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 419 transitions, 4399 flow [2022-11-16 12:23:18,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:18,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:18,317 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:18,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:23:18,317 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:18,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:18,318 INFO L85 PathProgramCache]: Analyzing trace with hash -309761931, now seen corresponding path program 10 times [2022-11-16 12:23:18,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:18,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253340640] [2022-11-16 12:23:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:18,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:18,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:18,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253340640] [2022-11-16 12:23:18,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253340640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:18,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:18,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:18,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366136602] [2022-11-16 12:23:18,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:18,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:18,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:18,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:18,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:18,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:18,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 419 transitions, 4399 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:18,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:18,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:18,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:20,757 INFO L130 PetriNetUnfolder]: 1119/3850 cut-off events. [2022-11-16 12:23:20,757 INFO L131 PetriNetUnfolder]: For 34326/34345 co-relation queries the response was YES. [2022-11-16 12:23:20,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19328 conditions, 3850 events. 1119/3850 cut-off events. For 34326/34345 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 37027 event pairs, 460 based on Foata normal form. 1/3543 useless extension candidates. Maximal degree in co-relation 19194. Up to 1235 conditions per place. [2022-11-16 12:23:20,901 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 167 selfloop transitions, 115 changer transitions 20/469 dead transitions. [2022-11-16 12:23:20,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 469 transitions, 5519 flow [2022-11-16 12:23:20,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:23:20,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:23:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3323 transitions. [2022-11-16 12:23:20,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8391414141414142 [2022-11-16 12:23:20,907 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3323 transitions. [2022-11-16 12:23:20,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3323 transitions. [2022-11-16 12:23:20,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:20,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3323 transitions. [2022-11-16 12:23:20,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.61111111111111) internal successors, (3323), 18 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:20,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:20,922 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:20,922 INFO L175 Difference]: Start difference. First operand has 475 places, 419 transitions, 4399 flow. Second operand 18 states and 3323 transitions. [2022-11-16 12:23:20,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 469 transitions, 5519 flow [2022-11-16 12:23:21,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 469 transitions, 5269 flow, removed 102 selfloop flow, removed 3 redundant places. [2022-11-16 12:23:21,436 INFO L231 Difference]: Finished difference. Result has 494 places, 432 transitions, 4711 flow [2022-11-16 12:23:21,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4711, PETRI_PLACES=494, PETRI_TRANSITIONS=432} [2022-11-16 12:23:21,438 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 292 predicate places. [2022-11-16 12:23:21,438 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 432 transitions, 4711 flow [2022-11-16 12:23:21,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:21,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:21,440 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:21,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:23:21,440 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:21,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:21,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1435397627, now seen corresponding path program 11 times [2022-11-16 12:23:21,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:21,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446974351] [2022-11-16 12:23:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:21,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:21,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:21,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446974351] [2022-11-16 12:23:21,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446974351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:21,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:21,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:21,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763767386] [2022-11-16 12:23:21,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:21,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:21,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:21,900 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:21,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 432 transitions, 4711 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:21,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:21,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:21,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:23,569 INFO L130 PetriNetUnfolder]: 1154/4060 cut-off events. [2022-11-16 12:23:23,569 INFO L131 PetriNetUnfolder]: For 36903/36922 co-relation queries the response was YES. [2022-11-16 12:23:23,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20400 conditions, 4060 events. 1154/4060 cut-off events. For 36903/36922 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 39527 event pairs, 478 based on Foata normal form. 1/3752 useless extension candidates. Maximal degree in co-relation 20261. Up to 1150 conditions per place. [2022-11-16 12:23:23,646 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 193 selfloop transitions, 120 changer transitions 23/503 dead transitions. [2022-11-16 12:23:23,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 503 transitions, 6190 flow [2022-11-16 12:23:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:23:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:23:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3875 transitions. [2022-11-16 12:23:23,650 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8387445887445888 [2022-11-16 12:23:23,651 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3875 transitions. [2022-11-16 12:23:23,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3875 transitions. [2022-11-16 12:23:23,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:23,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3875 transitions. [2022-11-16 12:23:23,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 184.52380952380952) internal successors, (3875), 21 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 220.0) internal successors, (4840), 22 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,664 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 220.0) internal successors, (4840), 22 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,664 INFO L175 Difference]: Start difference. First operand has 494 places, 432 transitions, 4711 flow. Second operand 21 states and 3875 transitions. [2022-11-16 12:23:23,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 503 transitions, 6190 flow [2022-11-16 12:23:24,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 503 transitions, 5985 flow, removed 51 selfloop flow, removed 5 redundant places. [2022-11-16 12:23:24,037 INFO L231 Difference]: Finished difference. Result has 520 places, 455 transitions, 5361 flow [2022-11-16 12:23:24,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=4516, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5361, PETRI_PLACES=520, PETRI_TRANSITIONS=455} [2022-11-16 12:23:24,038 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 318 predicate places. [2022-11-16 12:23:24,038 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 455 transitions, 5361 flow [2022-11-16 12:23:24,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,038 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:24,038 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:24,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:23:24,039 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:24,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:24,039 INFO L85 PathProgramCache]: Analyzing trace with hash -2111248209, now seen corresponding path program 12 times [2022-11-16 12:23:24,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:24,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144955577] [2022-11-16 12:23:24,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:24,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:24,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:24,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144955577] [2022-11-16 12:23:24,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144955577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:24,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:24,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:24,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077081941] [2022-11-16 12:23:24,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:24,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:24,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:24,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:24,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:24,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:24,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 455 transitions, 5361 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:24,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:24,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:26,196 INFO L130 PetriNetUnfolder]: 1152/4173 cut-off events. [2022-11-16 12:23:26,196 INFO L131 PetriNetUnfolder]: For 44497/44774 co-relation queries the response was YES. [2022-11-16 12:23:26,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21113 conditions, 4173 events. 1152/4173 cut-off events. For 44497/44774 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 40912 event pairs, 569 based on Foata normal form. 1/3851 useless extension candidates. Maximal degree in co-relation 20964. Up to 1269 conditions per place. [2022-11-16 12:23:26,362 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 195 selfloop transitions, 116 changer transitions 24/502 dead transitions. [2022-11-16 12:23:26,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 502 transitions, 6470 flow [2022-11-16 12:23:26,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:23:26,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:23:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3327 transitions. [2022-11-16 12:23:26,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8401515151515152 [2022-11-16 12:23:26,371 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3327 transitions. [2022-11-16 12:23:26,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3327 transitions. [2022-11-16 12:23:26,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:26,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3327 transitions. [2022-11-16 12:23:26,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.83333333333334) internal successors, (3327), 18 states have internal predecessors, (3327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:26,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:26,381 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:26,381 INFO L175 Difference]: Start difference. First operand has 520 places, 455 transitions, 5361 flow. Second operand 18 states and 3327 transitions. [2022-11-16 12:23:26,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 502 transitions, 6470 flow [2022-11-16 12:23:27,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 502 transitions, 6316 flow, removed 77 selfloop flow, removed 2 redundant places. [2022-11-16 12:23:27,043 INFO L231 Difference]: Finished difference. Result has 540 places, 464 transitions, 5719 flow [2022-11-16 12:23:27,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=5227, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5719, PETRI_PLACES=540, PETRI_TRANSITIONS=464} [2022-11-16 12:23:27,044 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 338 predicate places. [2022-11-16 12:23:27,045 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 464 transitions, 5719 flow [2022-11-16 12:23:27,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:27,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:27,045 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:27,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:23:27,046 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:27,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:27,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1719473611, now seen corresponding path program 13 times [2022-11-16 12:23:27,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:27,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528055143] [2022-11-16 12:23:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:27,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:27,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:27,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528055143] [2022-11-16 12:23:27,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528055143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:27,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:27,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:27,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147401320] [2022-11-16 12:23:27,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:27,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:27,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:27,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:27,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:27,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:27,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 464 transitions, 5719 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:27,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:27,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:27,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:29,311 INFO L130 PetriNetUnfolder]: 1249/4419 cut-off events. [2022-11-16 12:23:29,312 INFO L131 PetriNetUnfolder]: For 50020/50038 co-relation queries the response was YES. [2022-11-16 12:23:29,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23356 conditions, 4419 events. 1249/4419 cut-off events. For 50020/50038 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 44619 event pairs, 491 based on Foata normal form. 1/4086 useless extension candidates. Maximal degree in co-relation 23201. Up to 1304 conditions per place. [2022-11-16 12:23:29,485 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 216 selfloop transitions, 143 changer transitions 23/549 dead transitions. [2022-11-16 12:23:29,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 549 transitions, 7457 flow [2022-11-16 12:23:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:23:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:23:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4052 transitions. [2022-11-16 12:23:29,490 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8371900826446281 [2022-11-16 12:23:29,490 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4052 transitions. [2022-11-16 12:23:29,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4052 transitions. [2022-11-16 12:23:29,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:29,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4052 transitions. [2022-11-16 12:23:29,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 184.1818181818182) internal successors, (4052), 22 states have internal predecessors, (4052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:29,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 220.0) internal successors, (5060), 23 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:29,501 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 220.0) internal successors, (5060), 23 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:29,502 INFO L175 Difference]: Start difference. First operand has 540 places, 464 transitions, 5719 flow. Second operand 22 states and 4052 transitions. [2022-11-16 12:23:29,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 549 transitions, 7457 flow [2022-11-16 12:23:30,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 549 transitions, 7332 flow, removed 61 selfloop flow, removed 3 redundant places. [2022-11-16 12:23:30,281 INFO L231 Difference]: Finished difference. Result has 570 places, 496 transitions, 6633 flow [2022-11-16 12:23:30,282 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=5596, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6633, PETRI_PLACES=570, PETRI_TRANSITIONS=496} [2022-11-16 12:23:30,282 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 368 predicate places. [2022-11-16 12:23:30,282 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 496 transitions, 6633 flow [2022-11-16 12:23:30,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:30,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:30,283 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:30,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:23:30,284 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:30,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:30,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1723597027, now seen corresponding path program 14 times [2022-11-16 12:23:30,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:30,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383333189] [2022-11-16 12:23:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:30,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:30,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:30,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383333189] [2022-11-16 12:23:30,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383333189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:30,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:30,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:30,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5203612] [2022-11-16 12:23:30,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:30,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:30,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:30,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:30,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:30,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:30,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 496 transitions, 6633 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:30,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:30,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:30,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:32,581 INFO L130 PetriNetUnfolder]: 1283/4617 cut-off events. [2022-11-16 12:23:32,581 INFO L131 PetriNetUnfolder]: For 58749/58767 co-relation queries the response was YES. [2022-11-16 12:23:32,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25538 conditions, 4617 events. 1283/4617 cut-off events. For 58749/58767 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 46905 event pairs, 602 based on Foata normal form. 1/4263 useless extension candidates. Maximal degree in co-relation 25371. Up to 1329 conditions per place. [2022-11-16 12:23:32,653 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 270 selfloop transitions, 105 changer transitions 21/563 dead transitions. [2022-11-16 12:23:32,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 563 transitions, 8308 flow [2022-11-16 12:23:32,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:23:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:23:32,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3871 transitions. [2022-11-16 12:23:32,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8378787878787879 [2022-11-16 12:23:32,658 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3871 transitions. [2022-11-16 12:23:32,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3871 transitions. [2022-11-16 12:23:32,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:32,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3871 transitions. [2022-11-16 12:23:32,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 184.33333333333334) internal successors, (3871), 21 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:32,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 220.0) internal successors, (4840), 22 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:32,668 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 220.0) internal successors, (4840), 22 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:32,668 INFO L175 Difference]: Start difference. First operand has 570 places, 496 transitions, 6633 flow. Second operand 21 states and 3871 transitions. [2022-11-16 12:23:32,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 563 transitions, 8308 flow [2022-11-16 12:23:33,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 563 transitions, 8128 flow, removed 90 selfloop flow, removed 2 redundant places. [2022-11-16 12:23:33,375 INFO L231 Difference]: Finished difference. Result has 600 places, 520 transitions, 7317 flow [2022-11-16 12:23:33,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=6467, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7317, PETRI_PLACES=600, PETRI_TRANSITIONS=520} [2022-11-16 12:23:33,376 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 398 predicate places. [2022-11-16 12:23:33,376 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 520 transitions, 7317 flow [2022-11-16 12:23:33,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:33,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:33,377 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:33,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 12:23:33,377 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:33,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:33,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1115694345, now seen corresponding path program 15 times [2022-11-16 12:23:33,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:33,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125683298] [2022-11-16 12:23:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:33,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:33,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:33,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125683298] [2022-11-16 12:23:33,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125683298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:33,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:33,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:33,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777134257] [2022-11-16 12:23:33,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:33,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:33,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:33,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:33,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:33,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:33,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 520 transitions, 7317 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:33,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:33,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:33,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:35,745 INFO L130 PetriNetUnfolder]: 1306/4759 cut-off events. [2022-11-16 12:23:35,745 INFO L131 PetriNetUnfolder]: For 64586/64605 co-relation queries the response was YES. [2022-11-16 12:23:35,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26884 conditions, 4759 events. 1306/4759 cut-off events. For 64586/64605 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 48692 event pairs, 487 based on Foata normal form. 2/4403 useless extension candidates. Maximal degree in co-relation 26704. Up to 1400 conditions per place. [2022-11-16 12:23:35,953 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 237 selfloop transitions, 161 changer transitions 18/583 dead transitions. [2022-11-16 12:23:35,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 583 transitions, 8877 flow [2022-11-16 12:23:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:23:35,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:23:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3322 transitions. [2022-11-16 12:23:35,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8388888888888889 [2022-11-16 12:23:35,956 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3322 transitions. [2022-11-16 12:23:35,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3322 transitions. [2022-11-16 12:23:35,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:35,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3322 transitions. [2022-11-16 12:23:35,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.55555555555554) internal successors, (3322), 18 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:35,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:35,965 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:35,965 INFO L175 Difference]: Start difference. First operand has 600 places, 520 transitions, 7317 flow. Second operand 18 states and 3322 transitions. [2022-11-16 12:23:35,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 583 transitions, 8877 flow [2022-11-16 12:23:36,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 583 transitions, 8691 flow, removed 93 selfloop flow, removed 2 redundant places. [2022-11-16 12:23:36,876 INFO L231 Difference]: Finished difference. Result has 621 places, 541 transitions, 7979 flow [2022-11-16 12:23:36,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=7133, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7979, PETRI_PLACES=621, PETRI_TRANSITIONS=541} [2022-11-16 12:23:36,877 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 419 predicate places. [2022-11-16 12:23:36,877 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 541 transitions, 7979 flow [2022-11-16 12:23:36,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:36,878 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:36,878 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:36,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 12:23:36,878 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:36,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:36,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1606330793, now seen corresponding path program 16 times [2022-11-16 12:23:36,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:36,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426031977] [2022-11-16 12:23:36,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:36,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:37,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:37,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426031977] [2022-11-16 12:23:37,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426031977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:37,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:37,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:37,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61440120] [2022-11-16 12:23:37,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:37,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:37,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:37,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:37,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:37,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:37,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 541 transitions, 7979 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:37,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:37,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:37,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:39,387 INFO L130 PetriNetUnfolder]: 1361/4838 cut-off events. [2022-11-16 12:23:39,388 INFO L131 PetriNetUnfolder]: For 67152/67171 co-relation queries the response was YES. [2022-11-16 12:23:39,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28831 conditions, 4838 events. 1361/4838 cut-off events. For 67152/67171 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 49782 event pairs, 486 based on Foata normal form. 2/4454 useless extension candidates. Maximal degree in co-relation 28644. Up to 1443 conditions per place. [2022-11-16 12:23:39,506 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 280 selfloop transitions, 134 changer transitions 16/597 dead transitions. [2022-11-16 12:23:39,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 597 transitions, 9583 flow [2022-11-16 12:23:39,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:23:39,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:23:39,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3141 transitions. [2022-11-16 12:23:39,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8398395721925134 [2022-11-16 12:23:39,510 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3141 transitions. [2022-11-16 12:23:39,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3141 transitions. [2022-11-16 12:23:39,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:39,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3141 transitions. [2022-11-16 12:23:39,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 184.76470588235293) internal successors, (3141), 17 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:39,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:39,519 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:39,519 INFO L175 Difference]: Start difference. First operand has 621 places, 541 transitions, 7979 flow. Second operand 17 states and 3141 transitions. [2022-11-16 12:23:39,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 597 transitions, 9583 flow [2022-11-16 12:23:40,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 597 transitions, 9359 flow, removed 112 selfloop flow, removed 2 redundant places. [2022-11-16 12:23:40,421 INFO L231 Difference]: Finished difference. Result has 642 places, 562 transitions, 8611 flow [2022-11-16 12:23:40,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=7799, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8611, PETRI_PLACES=642, PETRI_TRANSITIONS=562} [2022-11-16 12:23:40,423 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 440 predicate places. [2022-11-16 12:23:40,423 INFO L495 AbstractCegarLoop]: Abstraction has has 642 places, 562 transitions, 8611 flow [2022-11-16 12:23:40,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:40,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:40,424 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:40,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 12:23:40,424 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:40,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:40,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1693485741, now seen corresponding path program 17 times [2022-11-16 12:23:40,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:40,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390874294] [2022-11-16 12:23:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:40,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:40,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:40,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390874294] [2022-11-16 12:23:40,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390874294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:40,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:40,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:40,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256693727] [2022-11-16 12:23:40,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:40,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:40,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:40,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:40,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:40,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:40,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 562 transitions, 8611 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:40,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:40,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:40,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:43,514 INFO L130 PetriNetUnfolder]: 1384/5081 cut-off events. [2022-11-16 12:23:43,515 INFO L131 PetriNetUnfolder]: For 73758/73776 co-relation queries the response was YES. [2022-11-16 12:23:43,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30291 conditions, 5081 events. 1384/5081 cut-off events. For 73758/73776 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 53491 event pairs, 529 based on Foata normal form. 1/4688 useless extension candidates. Maximal degree in co-relation 30096. Up to 1478 conditions per place. [2022-11-16 12:23:43,661 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 305 selfloop transitions, 126 changer transitions 17/615 dead transitions. [2022-11-16 12:23:43,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 615 transitions, 10224 flow [2022-11-16 12:23:43,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:23:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:23:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3325 transitions. [2022-11-16 12:23:43,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8396464646464646 [2022-11-16 12:23:43,666 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3325 transitions. [2022-11-16 12:23:43,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3325 transitions. [2022-11-16 12:23:43,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:43,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3325 transitions. [2022-11-16 12:23:43,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.72222222222223) internal successors, (3325), 18 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:43,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:43,678 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:43,679 INFO L175 Difference]: Start difference. First operand has 642 places, 562 transitions, 8611 flow. Second operand 18 states and 3325 transitions. [2022-11-16 12:23:43,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 615 transitions, 10224 flow [2022-11-16 12:23:44,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 615 transitions, 10084 flow, removed 70 selfloop flow, removed 2 redundant places. [2022-11-16 12:23:44,453 INFO L231 Difference]: Finished difference. Result has 663 places, 581 transitions, 9272 flow [2022-11-16 12:23:44,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=8475, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9272, PETRI_PLACES=663, PETRI_TRANSITIONS=581} [2022-11-16 12:23:44,454 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 461 predicate places. [2022-11-16 12:23:44,454 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 581 transitions, 9272 flow [2022-11-16 12:23:44,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:44,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:44,455 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:44,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 12:23:44,455 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:44,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:44,456 INFO L85 PathProgramCache]: Analyzing trace with hash 845720347, now seen corresponding path program 18 times [2022-11-16 12:23:44,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:44,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43314787] [2022-11-16 12:23:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:44,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:44,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:44,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43314787] [2022-11-16 12:23:44,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43314787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:44,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:44,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:44,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323518951] [2022-11-16 12:23:44,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:44,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:44,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:44,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:44,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:44,774 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:44,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 581 transitions, 9272 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:44,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:44,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:44,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:47,333 INFO L130 PetriNetUnfolder]: 1403/5071 cut-off events. [2022-11-16 12:23:47,333 INFO L131 PetriNetUnfolder]: For 77589/77608 co-relation queries the response was YES. [2022-11-16 12:23:47,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31448 conditions, 5071 events. 1403/5071 cut-off events. For 77589/77608 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 53383 event pairs, 491 based on Foata normal form. 2/4670 useless extension candidates. Maximal degree in co-relation 31246. Up to 1513 conditions per place. [2022-11-16 12:23:47,440 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 287 selfloop transitions, 151 changer transitions 23/628 dead transitions. [2022-11-16 12:23:47,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 628 transitions, 10712 flow [2022-11-16 12:23:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:23:47,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:23:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3325 transitions. [2022-11-16 12:23:47,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8396464646464646 [2022-11-16 12:23:47,445 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3325 transitions. [2022-11-16 12:23:47,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3325 transitions. [2022-11-16 12:23:47,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:47,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3325 transitions. [2022-11-16 12:23:47,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.72222222222223) internal successors, (3325), 18 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:47,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:47,454 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:47,454 INFO L175 Difference]: Start difference. First operand has 663 places, 581 transitions, 9272 flow. Second operand 18 states and 3325 transitions. [2022-11-16 12:23:47,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 628 transitions, 10712 flow [2022-11-16 12:23:48,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 676 places, 628 transitions, 10530 flow, removed 91 selfloop flow, removed 2 redundant places. [2022-11-16 12:23:48,309 INFO L231 Difference]: Finished difference. Result has 683 places, 595 transitions, 9802 flow [2022-11-16 12:23:48,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=9096, PETRI_DIFFERENCE_MINUEND_PLACES=659, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9802, PETRI_PLACES=683, PETRI_TRANSITIONS=595} [2022-11-16 12:23:48,310 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 481 predicate places. [2022-11-16 12:23:48,310 INFO L495 AbstractCegarLoop]: Abstraction has has 683 places, 595 transitions, 9802 flow [2022-11-16 12:23:48,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:48,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:48,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:23:48,311 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:48,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:48,311 INFO L85 PathProgramCache]: Analyzing trace with hash 300571907, now seen corresponding path program 19 times [2022-11-16 12:23:48,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:48,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021405866] [2022-11-16 12:23:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:48,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:48,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:48,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021405866] [2022-11-16 12:23:48,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021405866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:48,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:48,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:48,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326430889] [2022-11-16 12:23:48,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:48,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:48,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:48,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:48,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:48,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:48,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 595 transitions, 9802 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:48,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:48,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:50,963 INFO L130 PetriNetUnfolder]: 1406/5265 cut-off events. [2022-11-16 12:23:50,963 INFO L131 PetriNetUnfolder]: For 84671/84689 co-relation queries the response was YES. [2022-11-16 12:23:51,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32347 conditions, 5265 events. 1406/5265 cut-off events. For 84671/84689 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 55773 event pairs, 622 based on Foata normal form. 1/4856 useless extension candidates. Maximal degree in co-relation 32139. Up to 1525 conditions per place. [2022-11-16 12:23:51,161 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 309 selfloop transitions, 137 changer transitions 23/636 dead transitions. [2022-11-16 12:23:51,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 636 transitions, 11114 flow [2022-11-16 12:23:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:23:51,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:23:51,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3145 transitions. [2022-11-16 12:23:51,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8409090909090909 [2022-11-16 12:23:51,164 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3145 transitions. [2022-11-16 12:23:51,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3145 transitions. [2022-11-16 12:23:51,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:51,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3145 transitions. [2022-11-16 12:23:51,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 185.0) internal successors, (3145), 17 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:51,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:51,172 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:51,172 INFO L175 Difference]: Start difference. First operand has 683 places, 595 transitions, 9802 flow. Second operand 17 states and 3145 transitions. [2022-11-16 12:23:51,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 697 places, 636 transitions, 11114 flow [2022-11-16 12:23:52,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 636 transitions, 10929 flow, removed 55 selfloop flow, removed 4 redundant places. [2022-11-16 12:23:52,199 INFO L231 Difference]: Finished difference. Result has 700 places, 604 transitions, 10162 flow [2022-11-16 12:23:52,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=9624, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10162, PETRI_PLACES=700, PETRI_TRANSITIONS=604} [2022-11-16 12:23:52,200 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 498 predicate places. [2022-11-16 12:23:52,200 INFO L495 AbstractCegarLoop]: Abstraction has has 700 places, 604 transitions, 10162 flow [2022-11-16 12:23:52,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:52,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:52,201 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:52,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 12:23:52,202 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:52,202 INFO L85 PathProgramCache]: Analyzing trace with hash 607225479, now seen corresponding path program 20 times [2022-11-16 12:23:52,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:52,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202985622] [2022-11-16 12:23:52,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:52,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:52,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:52,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202985622] [2022-11-16 12:23:52,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202985622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:52,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:52,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:23:52,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280817824] [2022-11-16 12:23:52,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:52,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:23:52,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:52,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:23:52,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:52,511 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-16 12:23:52,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 700 places, 604 transitions, 10162 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:52,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:52,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-16 12:23:52,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:54,871 INFO L130 PetriNetUnfolder]: 1406/5148 cut-off events. [2022-11-16 12:23:54,871 INFO L131 PetriNetUnfolder]: For 81568/81587 co-relation queries the response was YES. [2022-11-16 12:23:55,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32447 conditions, 5148 events. 1406/5148 cut-off events. For 81568/81587 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 54414 event pairs, 474 based on Foata normal form. 2/4753 useless extension candidates. Maximal degree in co-relation 32235. Up to 1521 conditions per place. [2022-11-16 12:23:55,081 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 271 selfloop transitions, 189 changer transitions 22/649 dead transitions. [2022-11-16 12:23:55,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 649 transitions, 11490 flow [2022-11-16 12:23:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:23:55,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:23:55,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2960 transitions. [2022-11-16 12:23:55,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8409090909090909 [2022-11-16 12:23:55,084 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2960 transitions. [2022-11-16 12:23:55,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2960 transitions. [2022-11-16 12:23:55,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:55,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2960 transitions. [2022-11-16 12:23:55,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:55,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:55,092 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:55,093 INFO L175 Difference]: Start difference. First operand has 700 places, 604 transitions, 10162 flow. Second operand 16 states and 2960 transitions. [2022-11-16 12:23:55,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 649 transitions, 11490 flow [2022-11-16 12:23:55,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 649 transitions, 11316 flow, removed 51 selfloop flow, removed 3 redundant places. [2022-11-16 12:23:55,918 INFO L231 Difference]: Finished difference. Result has 717 places, 611 transitions, 10579 flow [2022-11-16 12:23:55,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=9992, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10579, PETRI_PLACES=717, PETRI_TRANSITIONS=611} [2022-11-16 12:23:55,920 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 515 predicate places. [2022-11-16 12:23:55,920 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 611 transitions, 10579 flow [2022-11-16 12:23:55,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:55,920 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:55,921 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:55,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 12:23:55,921 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:55,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash -506307202, now seen corresponding path program 1 times [2022-11-16 12:23:55,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:55,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238046757] [2022-11-16 12:23:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:55,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:55,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:55,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238046757] [2022-11-16 12:23:55,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238046757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:55,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:55,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:55,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838682324] [2022-11-16 12:23:55,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:55,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:55,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:55,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:55,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:55,973 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 220 [2022-11-16 12:23:55,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 611 transitions, 10579 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:55,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:55,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 220 [2022-11-16 12:23:55,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:57,416 INFO L130 PetriNetUnfolder]: 590/3996 cut-off events. [2022-11-16 12:23:57,417 INFO L131 PetriNetUnfolder]: For 61466/61504 co-relation queries the response was YES. [2022-11-16 12:23:57,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24580 conditions, 3996 events. 590/3996 cut-off events. For 61466/61504 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 41008 event pairs, 14 based on Foata normal form. 0/3922 useless extension candidates. Maximal degree in co-relation 24363. Up to 330 conditions per place. [2022-11-16 12:23:57,550 INFO L137 encePairwiseOnDemand]: 216/220 looper letters, 17 selfloop transitions, 2 changer transitions 1/618 dead transitions. [2022-11-16 12:23:57,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 618 transitions, 10640 flow [2022-11-16 12:23:57,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:57,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:23:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2022-11-16 12:23:57,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9287878787878788 [2022-11-16 12:23:57,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2022-11-16 12:23:57,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2022-11-16 12:23:57,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:57,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2022-11-16 12:23:57,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:57,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:57,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:57,553 INFO L175 Difference]: Start difference. First operand has 717 places, 611 transitions, 10579 flow. Second operand 3 states and 613 transitions. [2022-11-16 12:23:57,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 618 transitions, 10640 flow [2022-11-16 12:23:58,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 618 transitions, 10326 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-11-16 12:23:58,394 INFO L231 Difference]: Finished difference. Result has 714 places, 613 transitions, 10285 flow [2022-11-16 12:23:58,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=10265, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=10285, PETRI_PLACES=714, PETRI_TRANSITIONS=613} [2022-11-16 12:23:58,396 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 512 predicate places. [2022-11-16 12:23:58,396 INFO L495 AbstractCegarLoop]: Abstraction has has 714 places, 613 transitions, 10285 flow [2022-11-16 12:23:58,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:58,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:58,396 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:58,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 12:23:58,397 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:23:58,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:58,397 INFO L85 PathProgramCache]: Analyzing trace with hash -357576668, now seen corresponding path program 2 times [2022-11-16 12:23:58,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:58,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97997267] [2022-11-16 12:23:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:58,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:58,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:58,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97997267] [2022-11-16 12:23:58,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97997267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:58,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:58,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:58,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075076107] [2022-11-16 12:23:58,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:58,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:58,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:58,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:58,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:58,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 220 [2022-11-16 12:23:58,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 613 transitions, 10285 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:58,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:58,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 220 [2022-11-16 12:23:58,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:59,845 INFO L130 PetriNetUnfolder]: 587/3873 cut-off events. [2022-11-16 12:23:59,845 INFO L131 PetriNetUnfolder]: For 55946/56420 co-relation queries the response was YES. [2022-11-16 12:23:59,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23390 conditions, 3873 events. 587/3873 cut-off events. For 55946/56420 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 39525 event pairs, 10 based on Foata normal form. 8/3829 useless extension candidates. Maximal degree in co-relation 23174. Up to 318 conditions per place. [2022-11-16 12:23:59,944 INFO L137 encePairwiseOnDemand]: 214/220 looper letters, 15 selfloop transitions, 4 changer transitions 4/620 dead transitions. [2022-11-16 12:23:59,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 620 transitions, 10354 flow [2022-11-16 12:23:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:59,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:23:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2022-11-16 12:23:59,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9287878787878788 [2022-11-16 12:23:59,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2022-11-16 12:23:59,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2022-11-16 12:23:59,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:59,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2022-11-16 12:23:59,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:59,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:59,947 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:59,947 INFO L175 Difference]: Start difference. First operand has 714 places, 613 transitions, 10285 flow. Second operand 3 states and 613 transitions. [2022-11-16 12:23:59,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 620 transitions, 10354 flow [2022-11-16 12:24:00,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 620 transitions, 10352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:24:00,663 INFO L231 Difference]: Finished difference. Result has 717 places, 614 transitions, 10311 flow [2022-11-16 12:24:00,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=10283, PETRI_DIFFERENCE_MINUEND_PLACES=713, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=10311, PETRI_PLACES=717, PETRI_TRANSITIONS=614} [2022-11-16 12:24:00,664 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 515 predicate places. [2022-11-16 12:24:00,664 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 614 transitions, 10311 flow [2022-11-16 12:24:00,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:00,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:24:00,664 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:00,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 12:24:00,665 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:24:00,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:00,665 INFO L85 PathProgramCache]: Analyzing trace with hash 778323887, now seen corresponding path program 1 times [2022-11-16 12:24:00,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:00,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24621132] [2022-11-16 12:24:00,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:00,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:02,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:02,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24621132] [2022-11-16 12:24:02,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24621132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:02,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:02,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-16 12:24:02,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877827028] [2022-11-16 12:24:02,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:02,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 12:24:02,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:02,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 12:24:02,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=866, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:24:02,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 220 [2022-11-16 12:24:02,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 614 transitions, 10311 flow. Second operand has 31 states, 31 states have (on average 134.29032258064515) internal successors, (4163), 31 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:02,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:24:02,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 220 [2022-11-16 12:24:02,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:17,723 INFO L130 PetriNetUnfolder]: 27573/62586 cut-off events. [2022-11-16 12:25:17,723 INFO L131 PetriNetUnfolder]: For 688505/688578 co-relation queries the response was YES. [2022-11-16 12:25:20,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229314 conditions, 62586 events. 27573/62586 cut-off events. For 688505/688578 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 677071 event pairs, 1260 based on Foata normal form. 3/60499 useless extension candidates. Maximal degree in co-relation 229097. Up to 6399 conditions per place. [2022-11-16 12:25:20,375 INFO L137 encePairwiseOnDemand]: 181/220 looper letters, 1605 selfloop transitions, 88 changer transitions 5164/6982 dead transitions. [2022-11-16 12:25:20,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 954 places, 6982 transitions, 136222 flow [2022-11-16 12:25:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2022-11-16 12:25:20,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2022-11-16 12:25:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 33316 transitions. [2022-11-16 12:25:20,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6362872421695951 [2022-11-16 12:25:20,395 INFO L72 ComplementDD]: Start complementDD. Operand 238 states and 33316 transitions. [2022-11-16 12:25:20,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 238 states and 33316 transitions. [2022-11-16 12:25:20,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:20,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 238 states and 33316 transitions. [2022-11-16 12:25:20,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 239 states, 238 states have (on average 139.98319327731093) internal successors, (33316), 238 states have internal predecessors, (33316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:20,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 239 states, 239 states have (on average 220.0) internal successors, (52580), 239 states have internal predecessors, (52580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:20,488 INFO L81 ComplementDD]: Finished complementDD. Result has 239 states, 239 states have (on average 220.0) internal successors, (52580), 239 states have internal predecessors, (52580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:20,488 INFO L175 Difference]: Start difference. First operand has 717 places, 614 transitions, 10311 flow. Second operand 238 states and 33316 transitions. [2022-11-16 12:25:20,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 954 places, 6982 transitions, 136222 flow [2022-11-16 12:25:22,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 6982 transitions, 136206 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-16 12:25:22,702 INFO L231 Difference]: Finished difference. Result has 1177 places, 691 transitions, 11534 flow [2022-11-16 12:25:22,704 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=10295, PETRI_DIFFERENCE_MINUEND_PLACES=714, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=238, PETRI_FLOW=11534, PETRI_PLACES=1177, PETRI_TRANSITIONS=691} [2022-11-16 12:25:22,704 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 975 predicate places. [2022-11-16 12:25:22,705 INFO L495 AbstractCegarLoop]: Abstraction has has 1177 places, 691 transitions, 11534 flow [2022-11-16 12:25:22,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 134.29032258064515) internal successors, (4163), 31 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:22,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:22,712 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:22,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 12:25:22,712 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:25:22,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2140110117, now seen corresponding path program 2 times [2022-11-16 12:25:22,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:22,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535609390] [2022-11-16 12:25:22,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:22,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:25,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:25,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535609390] [2022-11-16 12:25:25,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535609390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:25,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:25,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-16 12:25:25,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338234320] [2022-11-16 12:25:25,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:25,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 12:25:25,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:25,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 12:25:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=858, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:25:25,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 220 [2022-11-16 12:25:25,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1177 places, 691 transitions, 11534 flow. Second operand has 31 states, 31 states have (on average 134.29032258064515) internal successors, (4163), 31 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:25,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:25,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 220 [2022-11-16 12:25:25,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand