./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be --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 c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:15:19,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:15:19,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:15:19,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:15:19,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:15:19,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:15:19,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:15:19,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:15:19,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:15:19,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:15:19,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:15:19,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:15:19,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:15:19,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:15:19,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:15:19,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:15:19,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:15:19,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:15:19,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:15:19,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:15:19,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:15:19,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:15:20,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:15:20,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:15:20,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:15:20,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:15:20,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:15:20,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:15:20,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:15:20,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:15:20,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:15:20,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:15:20,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:15:20,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:15:20,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:15:20,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:15:20,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:15:20,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:15:20,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:15:20,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:15:20,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:15:20,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:15:20,078 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:15:20,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:15:20,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:15:20,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:15:20,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:15:20,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:15:20,088 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:15:20,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:15:20,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:15:20,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:15:20,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:15:20,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:15:20,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:15:20,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:15:20,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:15:20,091 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:15:20,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:15:20,091 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:15:20,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:15:20,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:15:20,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:15:20,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:15:20,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:15:20,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:15:20,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:15:20,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:15:20,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:15:20,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:15:20,094 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:15:20,096 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:15:20,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:15:20,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:15:20,097 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_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c361ebc03d879240d418527d643e8a7b3c7ac084ceb3e66857b21a687a1c7f90 [2021-10-21 20:15:20,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:15:20,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:15:20,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:15:20,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:15:20,479 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:15:20,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2021-10-21 20:15:20,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/data/8f49f0e70/ef26697aa6504ec7b1637e7e552ad6e1/FLAGa8d856af2 [2021-10-21 20:15:21,094 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:15:21,094 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c [2021-10-21 20:15:21,110 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/data/8f49f0e70/ef26697aa6504ec7b1637e7e552ad6e1/FLAGa8d856af2 [2021-10-21 20:15:21,448 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/data/8f49f0e70/ef26697aa6504ec7b1637e7e552ad6e1 [2021-10-21 20:15:21,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:15:21,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:15:21,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:15:21,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:15:21,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:15:21,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:15:21" (1/1) ... [2021-10-21 20:15:21,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a4e7b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:21, skipping insertion in model container [2021-10-21 20:15:21,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:15:21" (1/1) ... [2021-10-21 20:15:21,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:15:21,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:15:21,767 WARN L228 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_e564899d-e818-4829-95f0-70507d52fc91/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2021-10-21 20:15:21,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:15:21,789 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:15:21,827 WARN L228 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_e564899d-e818-4829-95f0-70507d52fc91/sv-benchmarks/c/weaver/chl-sre-symm.wvr.c[2133,2146] [2021-10-21 20:15:21,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:15:21,851 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:15:21,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:21 WrapperNode [2021-10-21 20:15:21,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:15:21,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:15:21,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:15:21,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:15:21,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:21" (1/1) ... [2021-10-21 20:15:21,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:21" (1/1) ... [2021-10-21 20:15:21,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:15:21,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:15:21,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:15:21,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:15:21,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:21" (1/1) ... [2021-10-21 20:15:21,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:21" (1/1) ... [2021-10-21 20:15:21,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:21" (1/1) ... [2021-10-21 20:15:21,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:21" (1/1) ... [2021-10-21 20:15:21,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:21" (1/1) ... [2021-10-21 20:15:21,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:21" (1/1) ... [2021-10-21 20:15:21,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:21" (1/1) ... [2021-10-21 20:15:21,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:15:21,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:15:21,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:15:21,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:15:21,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:21" (1/1) ... [2021-10-21 20:15:21,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:15:21,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:15:22,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:15:22,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:15:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-21 20:15:22,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-21 20:15:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-21 20:15:22,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-21 20:15:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:15:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:15:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:15:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:15:22,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:15:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:15:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:15:22,041 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 20:15:22,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:15:22,399 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-21 20:15:22,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:22 BoogieIcfgContainer [2021-10-21 20:15:22,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:15:22,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:15:22,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:15:22,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:15:22,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:15:21" (1/3) ... [2021-10-21 20:15:22,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637dd4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:15:22, skipping insertion in model container [2021-10-21 20:15:22,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:15:21" (2/3) ... [2021-10-21 20:15:22,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637dd4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:15:22, skipping insertion in model container [2021-10-21 20:15:22,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:22" (3/3) ... [2021-10-21 20:15:22,427 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2021-10-21 20:15:22,437 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 20:15:22,439 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:15:22,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:15:22,439 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 20:15:22,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,495 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,496 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,496 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,496 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,497 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,497 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,497 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,498 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,499 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,504 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,504 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,504 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,505 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,505 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,505 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,505 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,506 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,506 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,506 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,507 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,507 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,507 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,507 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,508 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,511 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,512 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,512 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,512 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,523 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,523 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,523 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,523 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:15:22,546 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-21 20:15:22,604 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:15:22,611 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:15:22,612 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 20:15:22,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 92 transitions, 200 flow [2021-10-21 20:15:22,689 INFO L129 PetriNetUnfolder]: 7/90 cut-off events. [2021-10-21 20:15:22,689 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-21 20:15:22,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 90 events. 7/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2021-10-21 20:15:22,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 92 transitions, 200 flow [2021-10-21 20:15:22,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 82 transitions, 176 flow [2021-10-21 20:15:22,734 INFO L129 PetriNetUnfolder]: 7/81 cut-off events. [2021-10-21 20:15:22,734 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-21 20:15:22,734 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:22,735 INFO L254 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] [2021-10-21 20:15:22,735 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:22,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:22,742 INFO L82 PathProgramCache]: Analyzing trace with hash -2107598189, now seen corresponding path program 1 times [2021-10-21 20:15:22,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:22,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193518847] [2021-10-21 20:15:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:22,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:23,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:23,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193518847] [2021-10-21 20:15:23,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193518847] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:23,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:23,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 20:15:23,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937041672] [2021-10-21 20:15:23,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:15:23,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:23,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:15:23,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:15:23,353 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 92 [2021-10-21 20:15:23,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 176 flow. Second operand has 8 states, 8 states have (on average 63.75) internal successors, (510), 8 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:23,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:23,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 92 [2021-10-21 20:15:23,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:23,814 INFO L129 PetriNetUnfolder]: 44/254 cut-off events. [2021-10-21 20:15:23,814 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-10-21 20:15:23,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 254 events. 44/254 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 991 event pairs, 9 based on Foata normal form. 9/247 useless extension candidates. Maximal degree in co-relation 265. Up to 38 conditions per place. [2021-10-21 20:15:23,824 INFO L132 encePairwiseOnDemand]: 76/92 looper letters, 46 selfloop transitions, 10 changer transitions 32/140 dead transitions. [2021-10-21 20:15:23,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 140 transitions, 477 flow [2021-10-21 20:15:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 20:15:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-21 20:15:23,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1013 transitions. [2021-10-21 20:15:23,855 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7340579710144928 [2021-10-21 20:15:23,857 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1013 transitions. [2021-10-21 20:15:23,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1013 transitions. [2021-10-21 20:15:23,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:23,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1013 transitions. [2021-10-21 20:15:23,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.53333333333333) internal successors, (1013), 15 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:23,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 92.0) internal successors, (1472), 16 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:23,893 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 92.0) internal successors, (1472), 16 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:23,895 INFO L186 Difference]: Start difference. First operand has 82 places, 82 transitions, 176 flow. Second operand 15 states and 1013 transitions. [2021-10-21 20:15:23,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 140 transitions, 477 flow [2021-10-21 20:15:23,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 463 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-21 20:15:23,908 INFO L242 Difference]: Finished difference. Result has 102 places, 84 transitions, 235 flow [2021-10-21 20:15:23,910 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=235, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2021-10-21 20:15:23,911 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 20 predicate places. [2021-10-21 20:15:23,911 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 235 flow [2021-10-21 20:15:23,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 63.75) internal successors, (510), 8 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:23,912 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:23,913 INFO L254 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] [2021-10-21 20:15:23,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:15:23,914 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:23,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:23,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1392608778, now seen corresponding path program 1 times [2021-10-21 20:15:23,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:23,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72081221] [2021-10-21 20:15:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:23,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:24,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:24,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72081221] [2021-10-21 20:15:24,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72081221] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:24,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:24,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:24,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615632371] [2021-10-21 20:15:24,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:24,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:24,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:24,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:24,034 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-21 20:15:24,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:24,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:24,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-21 20:15:24,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:24,113 INFO L129 PetriNetUnfolder]: 28/285 cut-off events. [2021-10-21 20:15:24,113 INFO L130 PetriNetUnfolder]: For 75/76 co-relation queries the response was YES. [2021-10-21 20:15:24,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 285 events. 28/285 cut-off events. For 75/76 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1310 event pairs, 11 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 459. Up to 29 conditions per place. [2021-10-21 20:15:24,117 INFO L132 encePairwiseOnDemand]: 88/92 looper letters, 14 selfloop transitions, 2 changer transitions 2/90 dead transitions. [2021-10-21 20:15:24,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 90 transitions, 283 flow [2021-10-21 20:15:24,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 20:15:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2021-10-21 20:15:24,120 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8985507246376812 [2021-10-21 20:15:24,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2021-10-21 20:15:24,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2021-10-21 20:15:24,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:24,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2021-10-21 20:15:24,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:24,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:24,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:24,124 INFO L186 Difference]: Start difference. First operand has 102 places, 84 transitions, 235 flow. Second operand 3 states and 248 transitions. [2021-10-21 20:15:24,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 90 transitions, 283 flow [2021-10-21 20:15:24,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 272 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-21 20:15:24,132 INFO L242 Difference]: Finished difference. Result has 90 places, 84 transitions, 234 flow [2021-10-21 20:15:24,133 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2021-10-21 20:15:24,133 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2021-10-21 20:15:24,134 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 234 flow [2021-10-21 20:15:24,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:24,134 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:24,135 INFO L254 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] [2021-10-21 20:15:24,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:15:24,135 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:24,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:24,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1415695118, now seen corresponding path program 2 times [2021-10-21 20:15:24,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:24,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775821937] [2021-10-21 20:15:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:24,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:24,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:24,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775821937] [2021-10-21 20:15:24,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775821937] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:24,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:24,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:15:24,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077853639] [2021-10-21 20:15:24,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:15:24,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:24,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:15:24,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:15:24,273 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-21 20:15:24,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:24,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:24,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-21 20:15:24,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:24,344 INFO L129 PetriNetUnfolder]: 17/152 cut-off events. [2021-10-21 20:15:24,345 INFO L130 PetriNetUnfolder]: For 55/67 co-relation queries the response was YES. [2021-10-21 20:15:24,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 152 events. 17/152 cut-off events. For 55/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 429 event pairs, 8 based on Foata normal form. 4/143 useless extension candidates. Maximal degree in co-relation 226. Up to 24 conditions per place. [2021-10-21 20:15:24,350 INFO L132 encePairwiseOnDemand]: 88/92 looper letters, 10 selfloop transitions, 2 changer transitions 8/82 dead transitions. [2021-10-21 20:15:24,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 252 flow [2021-10-21 20:15:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:15:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 20:15:24,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2021-10-21 20:15:24,352 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8840579710144928 [2021-10-21 20:15:24,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2021-10-21 20:15:24,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2021-10-21 20:15:24,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:24,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2021-10-21 20:15:24,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:24,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:24,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:24,356 INFO L186 Difference]: Start difference. First operand has 90 places, 84 transitions, 234 flow. Second operand 3 states and 244 transitions. [2021-10-21 20:15:24,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 252 flow [2021-10-21 20:15:24,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 242 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-10-21 20:15:24,364 INFO L242 Difference]: Finished difference. Result has 90 places, 74 transitions, 186 flow [2021-10-21 20:15:24,364 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2021-10-21 20:15:24,364 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2021-10-21 20:15:24,365 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 186 flow [2021-10-21 20:15:24,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:24,365 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:24,366 INFO L254 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] [2021-10-21 20:15:24,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:15:24,366 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:24,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1952965175, now seen corresponding path program 1 times [2021-10-21 20:15:24,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:24,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691718489] [2021-10-21 20:15:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:24,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:24,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:24,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691718489] [2021-10-21 20:15:24,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691718489] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:24,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:24,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:24,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149184233] [2021-10-21 20:15:24,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:24,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:24,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:24,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:24,695 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:24,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 186 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:24,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:24,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:24,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:25,256 INFO L129 PetriNetUnfolder]: 75/301 cut-off events. [2021-10-21 20:15:25,256 INFO L130 PetriNetUnfolder]: For 127/129 co-relation queries the response was YES. [2021-10-21 20:15:25,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 301 events. 75/301 cut-off events. For 127/129 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1203 event pairs, 30 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 565. Up to 99 conditions per place. [2021-10-21 20:15:25,261 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 66 selfloop transitions, 5 changer transitions 28/145 dead transitions. [2021-10-21 20:15:25,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 145 transitions, 627 flow [2021-10-21 20:15:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-21 20:15:25,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-21 20:15:25,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1420 transitions. [2021-10-21 20:15:25,278 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6431159420289855 [2021-10-21 20:15:25,278 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1420 transitions. [2021-10-21 20:15:25,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1420 transitions. [2021-10-21 20:15:25,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:25,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1420 transitions. [2021-10-21 20:15:25,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 59.166666666666664) internal successors, (1420), 24 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:25,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:25,295 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:25,295 INFO L186 Difference]: Start difference. First operand has 90 places, 74 transitions, 186 flow. Second operand 24 states and 1420 transitions. [2021-10-21 20:15:25,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 145 transitions, 627 flow [2021-10-21 20:15:25,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 145 transitions, 566 flow, removed 29 selfloop flow, removed 5 redundant places. [2021-10-21 20:15:25,308 INFO L242 Difference]: Finished difference. Result has 123 places, 78 transitions, 265 flow [2021-10-21 20:15:25,309 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=265, PETRI_PLACES=123, PETRI_TRANSITIONS=78} [2021-10-21 20:15:25,309 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 41 predicate places. [2021-10-21 20:15:25,310 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 78 transitions, 265 flow [2021-10-21 20:15:25,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:25,310 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:25,311 INFO L254 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] [2021-10-21 20:15:25,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:15:25,311 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:25,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:25,312 INFO L82 PathProgramCache]: Analyzing trace with hash -191362153, now seen corresponding path program 2 times [2021-10-21 20:15:25,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:25,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041019438] [2021-10-21 20:15:25,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:25,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:25,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:25,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041019438] [2021-10-21 20:15:25,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041019438] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:25,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:25,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:25,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11887623] [2021-10-21 20:15:25,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:25,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:25,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:25,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:25,636 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:25,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 78 transitions, 265 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:25,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:25,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:25,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:26,106 INFO L129 PetriNetUnfolder]: 115/486 cut-off events. [2021-10-21 20:15:26,106 INFO L130 PetriNetUnfolder]: For 1313/1313 co-relation queries the response was YES. [2021-10-21 20:15:26,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1622 conditions, 486 events. 115/486 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2712 event pairs, 55 based on Foata normal form. 1/479 useless extension candidates. Maximal degree in co-relation 1514. Up to 164 conditions per place. [2021-10-21 20:15:26,115 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 95 selfloop transitions, 5 changer transitions 28/174 dead transitions. [2021-10-21 20:15:26,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 174 transitions, 1161 flow [2021-10-21 20:15:26,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-21 20:15:26,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-21 20:15:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1425 transitions. [2021-10-21 20:15:26,123 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6453804347826086 [2021-10-21 20:15:26,123 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1425 transitions. [2021-10-21 20:15:26,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1425 transitions. [2021-10-21 20:15:26,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:26,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1425 transitions. [2021-10-21 20:15:26,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 59.375) internal successors, (1425), 24 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:26,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:26,139 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:26,139 INFO L186 Difference]: Start difference. First operand has 123 places, 78 transitions, 265 flow. Second operand 24 states and 1425 transitions. [2021-10-21 20:15:26,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 174 transitions, 1161 flow [2021-10-21 20:15:26,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 174 transitions, 1037 flow, removed 59 selfloop flow, removed 12 redundant places. [2021-10-21 20:15:26,156 INFO L242 Difference]: Finished difference. Result has 139 places, 82 transitions, 345 flow [2021-10-21 20:15:26,157 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=345, PETRI_PLACES=139, PETRI_TRANSITIONS=82} [2021-10-21 20:15:26,157 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 57 predicate places. [2021-10-21 20:15:26,157 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 82 transitions, 345 flow [2021-10-21 20:15:26,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:26,158 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:26,158 INFO L254 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] [2021-10-21 20:15:26,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 20:15:26,159 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:26,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:26,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1778161647, now seen corresponding path program 3 times [2021-10-21 20:15:26,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:26,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890906562] [2021-10-21 20:15:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:26,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:26,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:26,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890906562] [2021-10-21 20:15:26,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890906562] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:26,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:26,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:26,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336890490] [2021-10-21 20:15:26,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:26,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:26,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:26,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:26,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:26,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 82 transitions, 345 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:26,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:26,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:26,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:26,774 INFO L129 PetriNetUnfolder]: 122/491 cut-off events. [2021-10-21 20:15:26,774 INFO L130 PetriNetUnfolder]: For 2467/2467 co-relation queries the response was YES. [2021-10-21 20:15:26,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 491 events. 122/491 cut-off events. For 2467/2467 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2624 event pairs, 69 based on Foata normal form. 1/479 useless extension candidates. Maximal degree in co-relation 1939. Up to 215 conditions per place. [2021-10-21 20:15:26,783 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 60 selfloop transitions, 12 changer transitions 23/141 dead transitions. [2021-10-21 20:15:26,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 141 transitions, 1157 flow [2021-10-21 20:15:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 20:15:26,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-21 20:15:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1294 transitions. [2021-10-21 20:15:26,789 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6393280632411067 [2021-10-21 20:15:26,789 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1294 transitions. [2021-10-21 20:15:26,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1294 transitions. [2021-10-21 20:15:26,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:26,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1294 transitions. [2021-10-21 20:15:26,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.81818181818182) internal successors, (1294), 22 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:26,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:26,827 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:26,827 INFO L186 Difference]: Start difference. First operand has 139 places, 82 transitions, 345 flow. Second operand 22 states and 1294 transitions. [2021-10-21 20:15:26,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 141 transitions, 1157 flow [2021-10-21 20:15:26,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 141 transitions, 1084 flow, removed 35 selfloop flow, removed 11 redundant places. [2021-10-21 20:15:26,846 INFO L242 Difference]: Finished difference. Result has 146 places, 92 transitions, 498 flow [2021-10-21 20:15:26,847 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=498, PETRI_PLACES=146, PETRI_TRANSITIONS=92} [2021-10-21 20:15:26,847 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 64 predicate places. [2021-10-21 20:15:26,847 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 92 transitions, 498 flow [2021-10-21 20:15:26,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:26,848 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:26,848 INFO L254 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] [2021-10-21 20:15:26,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:15:26,848 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:26,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:26,849 INFO L82 PathProgramCache]: Analyzing trace with hash 2131811099, now seen corresponding path program 4 times [2021-10-21 20:15:26,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:26,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301382431] [2021-10-21 20:15:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:26,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:27,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:27,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301382431] [2021-10-21 20:15:27,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301382431] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:27,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:27,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:27,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025196564] [2021-10-21 20:15:27,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:27,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:27,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:27,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:27,021 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:27,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 92 transitions, 498 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:27,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:27,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:27,492 INFO L129 PetriNetUnfolder]: 135/540 cut-off events. [2021-10-21 20:15:27,493 INFO L130 PetriNetUnfolder]: For 3474/3474 co-relation queries the response was YES. [2021-10-21 20:15:27,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 540 events. 135/540 cut-off events. For 3474/3474 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3047 event pairs, 79 based on Foata normal form. 1/531 useless extension candidates. Maximal degree in co-relation 2394. Up to 219 conditions per place. [2021-10-21 20:15:27,505 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 59 selfloop transitions, 19 changer transitions 23/147 dead transitions. [2021-10-21 20:15:27,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 147 transitions, 1403 flow [2021-10-21 20:15:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 20:15:27,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-21 20:15:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1184 transitions. [2021-10-21 20:15:27,512 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6434782608695652 [2021-10-21 20:15:27,512 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1184 transitions. [2021-10-21 20:15:27,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1184 transitions. [2021-10-21 20:15:27,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:27,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1184 transitions. [2021-10-21 20:15:27,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.2) internal successors, (1184), 20 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,528 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,528 INFO L186 Difference]: Start difference. First operand has 146 places, 92 transitions, 498 flow. Second operand 20 states and 1184 transitions. [2021-10-21 20:15:27,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 147 transitions, 1403 flow [2021-10-21 20:15:27,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 147 transitions, 1255 flow, removed 74 selfloop flow, removed 9 redundant places. [2021-10-21 20:15:27,586 INFO L242 Difference]: Finished difference. Result has 159 places, 102 transitions, 682 flow [2021-10-21 20:15:27,586 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=682, PETRI_PLACES=159, PETRI_TRANSITIONS=102} [2021-10-21 20:15:27,587 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 77 predicate places. [2021-10-21 20:15:27,587 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 102 transitions, 682 flow [2021-10-21 20:15:27,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,587 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:27,588 INFO L254 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] [2021-10-21 20:15:27,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 20:15:27,588 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:27,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:27,589 INFO L82 PathProgramCache]: Analyzing trace with hash 661882649, now seen corresponding path program 5 times [2021-10-21 20:15:27,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:27,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568917142] [2021-10-21 20:15:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:27,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:27,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:27,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568917142] [2021-10-21 20:15:27,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568917142] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:27,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:27,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:27,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683358512] [2021-10-21 20:15:27,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:27,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:27,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:27,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:27,774 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:27,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 102 transitions, 682 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:27,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:27,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:27,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:28,186 INFO L129 PetriNetUnfolder]: 132/533 cut-off events. [2021-10-21 20:15:28,186 INFO L130 PetriNetUnfolder]: For 4872/4875 co-relation queries the response was YES. [2021-10-21 20:15:28,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2789 conditions, 533 events. 132/533 cut-off events. For 4872/4875 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2997 event pairs, 71 based on Foata normal form. 1/522 useless extension candidates. Maximal degree in co-relation 2657. Up to 229 conditions per place. [2021-10-21 20:15:28,197 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 69 selfloop transitions, 22 changer transitions 26/163 dead transitions. [2021-10-21 20:15:28,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 163 transitions, 1854 flow [2021-10-21 20:15:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 20:15:28,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-21 20:15:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1183 transitions. [2021-10-21 20:15:28,203 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6429347826086956 [2021-10-21 20:15:28,203 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1183 transitions. [2021-10-21 20:15:28,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1183 transitions. [2021-10-21 20:15:28,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:28,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1183 transitions. [2021-10-21 20:15:28,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.15) internal successors, (1183), 20 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,231 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,232 INFO L186 Difference]: Start difference. First operand has 159 places, 102 transitions, 682 flow. Second operand 20 states and 1183 transitions. [2021-10-21 20:15:28,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 163 transitions, 1854 flow [2021-10-21 20:15:28,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 163 transitions, 1665 flow, removed 85 selfloop flow, removed 10 redundant places. [2021-10-21 20:15:28,262 INFO L242 Difference]: Finished difference. Result has 172 places, 113 transitions, 882 flow [2021-10-21 20:15:28,263 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=882, PETRI_PLACES=172, PETRI_TRANSITIONS=113} [2021-10-21 20:15:28,263 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 90 predicate places. [2021-10-21 20:15:28,263 INFO L470 AbstractCegarLoop]: Abstraction has has 172 places, 113 transitions, 882 flow [2021-10-21 20:15:28,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,264 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:28,264 INFO L254 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] [2021-10-21 20:15:28,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 20:15:28,265 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:28,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:28,265 INFO L82 PathProgramCache]: Analyzing trace with hash -276423075, now seen corresponding path program 1 times [2021-10-21 20:15:28,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:28,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677771701] [2021-10-21 20:15:28,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:28,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:28,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:28,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677771701] [2021-10-21 20:15:28,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677771701] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:28,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:28,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:15:28,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18664040] [2021-10-21 20:15:28,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:15:28,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:28,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:15:28,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:28,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-21 20:15:28,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 113 transitions, 882 flow. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:28,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-21 20:15:28,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:28,487 INFO L129 PetriNetUnfolder]: 60/403 cut-off events. [2021-10-21 20:15:28,488 INFO L130 PetriNetUnfolder]: For 3349/3380 co-relation queries the response was YES. [2021-10-21 20:15:28,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 403 events. 60/403 cut-off events. For 3349/3380 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2268 event pairs, 38 based on Foata normal form. 13/394 useless extension candidates. Maximal degree in co-relation 1676. Up to 57 conditions per place. [2021-10-21 20:15:28,497 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 10 selfloop transitions, 8 changer transitions 0/119 dead transitions. [2021-10-21 20:15:28,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 119 transitions, 934 flow [2021-10-21 20:15:28,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:15:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-21 20:15:28,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2021-10-21 20:15:28,499 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2021-10-21 20:15:28,499 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2021-10-21 20:15:28,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2021-10-21 20:15:28,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:28,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2021-10-21 20:15:28,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,503 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,503 INFO L186 Difference]: Start difference. First operand has 172 places, 113 transitions, 882 flow. Second operand 5 states and 400 transitions. [2021-10-21 20:15:28,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 119 transitions, 934 flow [2021-10-21 20:15:28,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 119 transitions, 818 flow, removed 50 selfloop flow, removed 11 redundant places. [2021-10-21 20:15:28,531 INFO L242 Difference]: Finished difference. Result has 156 places, 117 transitions, 814 flow [2021-10-21 20:15:28,532 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=814, PETRI_PLACES=156, PETRI_TRANSITIONS=117} [2021-10-21 20:15:28,532 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 74 predicate places. [2021-10-21 20:15:28,532 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 117 transitions, 814 flow [2021-10-21 20:15:28,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,533 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:28,533 INFO L254 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] [2021-10-21 20:15:28,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 20:15:28,534 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:28,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:28,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1685080521, now seen corresponding path program 2 times [2021-10-21 20:15:28,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:28,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019867798] [2021-10-21 20:15:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:28,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:28,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:28,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019867798] [2021-10-21 20:15:28,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019867798] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:28,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:28,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:15:28,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372217677] [2021-10-21 20:15:28,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:15:28,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:28,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:15:28,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:15:28,585 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-21 20:15:28,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 117 transitions, 814 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:28,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-21 20:15:28,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:28,679 INFO L129 PetriNetUnfolder]: 50/352 cut-off events. [2021-10-21 20:15:28,680 INFO L130 PetriNetUnfolder]: For 2146/2170 co-relation queries the response was YES. [2021-10-21 20:15:28,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 352 events. 50/352 cut-off events. For 2146/2170 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1872 event pairs, 27 based on Foata normal form. 13/350 useless extension candidates. Maximal degree in co-relation 1262. Up to 49 conditions per place. [2021-10-21 20:15:28,688 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 14 selfloop transitions, 7 changer transitions 0/122 dead transitions. [2021-10-21 20:15:28,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 122 transitions, 880 flow [2021-10-21 20:15:28,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:15:28,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 20:15:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 322 transitions. [2021-10-21 20:15:28,690 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-10-21 20:15:28,690 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 322 transitions. [2021-10-21 20:15:28,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 322 transitions. [2021-10-21 20:15:28,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:28,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 322 transitions. [2021-10-21 20:15:28,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,694 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,694 INFO L186 Difference]: Start difference. First operand has 156 places, 117 transitions, 814 flow. Second operand 4 states and 322 transitions. [2021-10-21 20:15:28,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 122 transitions, 880 flow [2021-10-21 20:15:28,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 122 transitions, 862 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-10-21 20:15:28,719 INFO L242 Difference]: Finished difference. Result has 160 places, 119 transitions, 834 flow [2021-10-21 20:15:28,719 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=834, PETRI_PLACES=160, PETRI_TRANSITIONS=119} [2021-10-21 20:15:28,720 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 78 predicate places. [2021-10-21 20:15:28,720 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 119 transitions, 834 flow [2021-10-21 20:15:28,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,721 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:28,721 INFO L254 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] [2021-10-21 20:15:28,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 20:15:28,721 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:28,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:28,722 INFO L82 PathProgramCache]: Analyzing trace with hash 240417249, now seen corresponding path program 1 times [2021-10-21 20:15:28,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:28,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678503801] [2021-10-21 20:15:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:28,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:28,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:28,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:28,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678503801] [2021-10-21 20:15:28,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678503801] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:28,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:28,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:15:28,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967524518] [2021-10-21 20:15:28,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:15:28,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:28,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:15:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:15:28,804 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-21 20:15:28,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 119 transitions, 834 flow. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:28,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-21 20:15:28,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:28,904 INFO L129 PetriNetUnfolder]: 49/358 cut-off events. [2021-10-21 20:15:28,904 INFO L130 PetriNetUnfolder]: For 1971/1996 co-relation queries the response was YES. [2021-10-21 20:15:28,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 358 events. 49/358 cut-off events. For 1971/1996 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1898 event pairs, 27 based on Foata normal form. 11/356 useless extension candidates. Maximal degree in co-relation 1255. Up to 50 conditions per place. [2021-10-21 20:15:28,911 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 15 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2021-10-21 20:15:28,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 122 transitions, 892 flow [2021-10-21 20:15:28,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:15:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-21 20:15:28,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 398 transitions. [2021-10-21 20:15:28,913 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8652173913043478 [2021-10-21 20:15:28,913 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 398 transitions. [2021-10-21 20:15:28,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 398 transitions. [2021-10-21 20:15:28,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:28,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 398 transitions. [2021-10-21 20:15:28,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,917 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,917 INFO L186 Difference]: Start difference. First operand has 160 places, 119 transitions, 834 flow. Second operand 5 states and 398 transitions. [2021-10-21 20:15:28,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 122 transitions, 892 flow [2021-10-21 20:15:28,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 122 transitions, 874 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-10-21 20:15:28,937 INFO L242 Difference]: Finished difference. Result has 162 places, 121 transitions, 852 flow [2021-10-21 20:15:28,938 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=852, PETRI_PLACES=162, PETRI_TRANSITIONS=121} [2021-10-21 20:15:28,938 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 80 predicate places. [2021-10-21 20:15:28,938 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 121 transitions, 852 flow [2021-10-21 20:15:28,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:28,939 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:28,939 INFO L254 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] [2021-10-21 20:15:28,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 20:15:28,939 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:28,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:28,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1922588559, now seen corresponding path program 6 times [2021-10-21 20:15:28,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:28,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451187090] [2021-10-21 20:15:28,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:28,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:29,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:29,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:29,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451187090] [2021-10-21 20:15:29,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451187090] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:29,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:29,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:29,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963248896] [2021-10-21 20:15:29,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:29,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:29,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:29,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:29,079 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:29,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 121 transitions, 852 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:29,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:29,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:29,470 INFO L129 PetriNetUnfolder]: 120/528 cut-off events. [2021-10-21 20:15:29,470 INFO L130 PetriNetUnfolder]: For 3392/3398 co-relation queries the response was YES. [2021-10-21 20:15:29,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 528 events. 120/528 cut-off events. For 3392/3398 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3035 event pairs, 75 based on Foata normal form. 1/521 useless extension candidates. Maximal degree in co-relation 2403. Up to 216 conditions per place. [2021-10-21 20:15:29,481 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 65 selfloop transitions, 27 changer transitions 24/170 dead transitions. [2021-10-21 20:15:29,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 170 transitions, 1684 flow [2021-10-21 20:15:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 20:15:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-21 20:15:29,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1241 transitions. [2021-10-21 20:15:29,485 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423395445134575 [2021-10-21 20:15:29,485 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1241 transitions. [2021-10-21 20:15:29,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1241 transitions. [2021-10-21 20:15:29,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:29,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1241 transitions. [2021-10-21 20:15:29,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 59.095238095238095) internal successors, (1241), 21 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,524 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,524 INFO L186 Difference]: Start difference. First operand has 162 places, 121 transitions, 852 flow. Second operand 21 states and 1241 transitions. [2021-10-21 20:15:29,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 170 transitions, 1684 flow [2021-10-21 20:15:29,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 170 transitions, 1670 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-10-21 20:15:29,554 INFO L242 Difference]: Finished difference. Result has 196 places, 131 transitions, 1076 flow [2021-10-21 20:15:29,554 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1076, PETRI_PLACES=196, PETRI_TRANSITIONS=131} [2021-10-21 20:15:29,555 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 114 predicate places. [2021-10-21 20:15:29,555 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 131 transitions, 1076 flow [2021-10-21 20:15:29,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,555 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:29,555 INFO L254 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] [2021-10-21 20:15:29,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-21 20:15:29,556 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:29,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1785571825, now seen corresponding path program 2 times [2021-10-21 20:15:29,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:29,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914168340] [2021-10-21 20:15:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:29,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:29,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:29,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914168340] [2021-10-21 20:15:29,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914168340] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:29,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:29,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:15:29,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964681908] [2021-10-21 20:15:29,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:15:29,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:29,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:15:29,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:15:29,622 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2021-10-21 20:15:29,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 131 transitions, 1076 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:29,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2021-10-21 20:15:29,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:29,726 INFO L129 PetriNetUnfolder]: 48/340 cut-off events. [2021-10-21 20:15:29,726 INFO L130 PetriNetUnfolder]: For 2472/2495 co-relation queries the response was YES. [2021-10-21 20:15:29,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1556 conditions, 340 events. 48/340 cut-off events. For 2472/2495 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1798 event pairs, 20 based on Foata normal form. 12/342 useless extension candidates. Maximal degree in co-relation 1464. Up to 51 conditions per place. [2021-10-21 20:15:29,734 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 17 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2021-10-21 20:15:29,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 132 transitions, 1122 flow [2021-10-21 20:15:29,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:15:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 20:15:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2021-10-21 20:15:29,738 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8722826086956522 [2021-10-21 20:15:29,738 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2021-10-21 20:15:29,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2021-10-21 20:15:29,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:29,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2021-10-21 20:15:29,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,742 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,742 INFO L186 Difference]: Start difference. First operand has 196 places, 131 transitions, 1076 flow. Second operand 4 states and 321 transitions. [2021-10-21 20:15:29,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 132 transitions, 1122 flow [2021-10-21 20:15:29,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 132 transitions, 1024 flow, removed 33 selfloop flow, removed 16 redundant places. [2021-10-21 20:15:29,773 INFO L242 Difference]: Finished difference. Result has 171 places, 131 transitions, 990 flow [2021-10-21 20:15:29,774 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=990, PETRI_PLACES=171, PETRI_TRANSITIONS=131} [2021-10-21 20:15:29,774 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 89 predicate places. [2021-10-21 20:15:29,774 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 131 transitions, 990 flow [2021-10-21 20:15:29,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,775 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:29,775 INFO L254 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] [2021-10-21 20:15:29,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-21 20:15:29,776 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:29,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:29,776 INFO L82 PathProgramCache]: Analyzing trace with hash 13541387, now seen corresponding path program 1 times [2021-10-21 20:15:29,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:29,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422531007] [2021-10-21 20:15:29,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:29,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:29,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:29,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422531007] [2021-10-21 20:15:29,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422531007] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:29,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:29,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:29,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475295157] [2021-10-21 20:15:29,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:29,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:29,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:29,918 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:29,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 131 transitions, 990 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:29,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:29,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:29,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:30,309 INFO L129 PetriNetUnfolder]: 94/442 cut-off events. [2021-10-21 20:15:30,309 INFO L130 PetriNetUnfolder]: For 2364/2380 co-relation queries the response was YES. [2021-10-21 20:15:30,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2048 conditions, 442 events. 94/442 cut-off events. For 2364/2380 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2346 event pairs, 35 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 1922. Up to 188 conditions per place. [2021-10-21 20:15:30,318 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 106 selfloop transitions, 5 changer transitions 32/197 dead transitions. [2021-10-21 20:15:30,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 197 transitions, 1748 flow [2021-10-21 20:15:30,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-21 20:15:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-21 20:15:30,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1419 transitions. [2021-10-21 20:15:30,323 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6426630434782609 [2021-10-21 20:15:30,323 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1419 transitions. [2021-10-21 20:15:30,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1419 transitions. [2021-10-21 20:15:30,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:30,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1419 transitions. [2021-10-21 20:15:30,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 59.125) internal successors, (1419), 24 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:30,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:30,335 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:30,335 INFO L186 Difference]: Start difference. First operand has 171 places, 131 transitions, 990 flow. Second operand 24 states and 1419 transitions. [2021-10-21 20:15:30,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 197 transitions, 1748 flow [2021-10-21 20:15:30,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 197 transitions, 1688 flow, removed 27 selfloop flow, removed 5 redundant places. [2021-10-21 20:15:30,366 INFO L242 Difference]: Finished difference. Result has 207 places, 131 transitions, 1029 flow [2021-10-21 20:15:30,366 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1029, PETRI_PLACES=207, PETRI_TRANSITIONS=131} [2021-10-21 20:15:30,367 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 125 predicate places. [2021-10-21 20:15:30,367 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 131 transitions, 1029 flow [2021-10-21 20:15:30,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:30,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:30,368 INFO L254 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] [2021-10-21 20:15:30,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-21 20:15:30,368 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:30,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:30,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1106046871, now seen corresponding path program 2 times [2021-10-21 20:15:30,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:30,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942513915] [2021-10-21 20:15:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:30,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:30,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:30,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:30,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942513915] [2021-10-21 20:15:30,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942513915] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:30,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:30,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:30,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834341589] [2021-10-21 20:15:30,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:30,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:30,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:30,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:30,507 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:30,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 131 transitions, 1029 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:30,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:30,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:30,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:30,968 INFO L129 PetriNetUnfolder]: 91/454 cut-off events. [2021-10-21 20:15:30,968 INFO L130 PetriNetUnfolder]: For 2893/2910 co-relation queries the response was YES. [2021-10-21 20:15:30,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 454 events. 91/454 cut-off events. For 2893/2910 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2517 event pairs, 30 based on Foata normal form. 1/451 useless extension candidates. Maximal degree in co-relation 2134. Up to 188 conditions per place. [2021-10-21 20:15:30,979 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 108 selfloop transitions, 5 changer transitions 35/202 dead transitions. [2021-10-21 20:15:30,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 202 transitions, 1908 flow [2021-10-21 20:15:30,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-21 20:15:30,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-21 20:15:30,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1424 transitions. [2021-10-21 20:15:30,983 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.644927536231884 [2021-10-21 20:15:30,983 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1424 transitions. [2021-10-21 20:15:30,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1424 transitions. [2021-10-21 20:15:30,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:30,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1424 transitions. [2021-10-21 20:15:30,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 59.333333333333336) internal successors, (1424), 24 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:30,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:30,994 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 92.0) internal successors, (2300), 25 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:30,994 INFO L186 Difference]: Start difference. First operand has 207 places, 131 transitions, 1029 flow. Second operand 24 states and 1424 transitions. [2021-10-21 20:15:30,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 202 transitions, 1908 flow [2021-10-21 20:15:31,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 202 transitions, 1620 flow, removed 86 selfloop flow, removed 22 redundant places. [2021-10-21 20:15:31,051 INFO L242 Difference]: Finished difference. Result has 209 places, 131 transitions, 992 flow [2021-10-21 20:15:31,051 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=992, PETRI_PLACES=209, PETRI_TRANSITIONS=131} [2021-10-21 20:15:31,051 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 127 predicate places. [2021-10-21 20:15:31,052 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 131 transitions, 992 flow [2021-10-21 20:15:31,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:31,052 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:31,052 INFO L254 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] [2021-10-21 20:15:31,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-21 20:15:31,053 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:31,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:31,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1269362189, now seen corresponding path program 3 times [2021-10-21 20:15:31,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:31,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463303751] [2021-10-21 20:15:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:31,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:31,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:31,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463303751] [2021-10-21 20:15:31,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463303751] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:31,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:31,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:31,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171953534] [2021-10-21 20:15:31,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:31,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:31,180 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:31,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 131 transitions, 992 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:31,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:31,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:31,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:31,505 INFO L129 PetriNetUnfolder]: 92/463 cut-off events. [2021-10-21 20:15:31,505 INFO L130 PetriNetUnfolder]: For 2856/2877 co-relation queries the response was YES. [2021-10-21 20:15:31,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 463 events. 92/463 cut-off events. For 2856/2877 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2568 event pairs, 35 based on Foata normal form. 2/460 useless extension candidates. Maximal degree in co-relation 2127. Up to 212 conditions per place. [2021-10-21 20:15:31,515 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 86 selfloop transitions, 14 changer transitions 20/174 dead transitions. [2021-10-21 20:15:31,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 174 transitions, 1708 flow [2021-10-21 20:15:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:15:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 20:15:31,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 956 transitions. [2021-10-21 20:15:31,519 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6494565217391305 [2021-10-21 20:15:31,519 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 956 transitions. [2021-10-21 20:15:31,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 956 transitions. [2021-10-21 20:15:31,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:31,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 956 transitions. [2021-10-21 20:15:31,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 59.75) internal successors, (956), 16 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:31,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:31,543 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:31,543 INFO L186 Difference]: Start difference. First operand has 209 places, 131 transitions, 992 flow. Second operand 16 states and 956 transitions. [2021-10-21 20:15:31,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 174 transitions, 1708 flow [2021-10-21 20:15:31,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 174 transitions, 1446 flow, removed 89 selfloop flow, removed 22 redundant places. [2021-10-21 20:15:31,569 INFO L242 Difference]: Finished difference. Result has 196 places, 141 transitions, 1046 flow [2021-10-21 20:15:31,570 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1046, PETRI_PLACES=196, PETRI_TRANSITIONS=141} [2021-10-21 20:15:31,570 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 114 predicate places. [2021-10-21 20:15:31,570 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 141 transitions, 1046 flow [2021-10-21 20:15:31,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:31,572 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:31,572 INFO L254 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] [2021-10-21 20:15:31,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-21 20:15:31,572 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:31,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:31,573 INFO L82 PathProgramCache]: Analyzing trace with hash 559582597, now seen corresponding path program 4 times [2021-10-21 20:15:31,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:31,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516895172] [2021-10-21 20:15:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:31,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:31,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:31,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516895172] [2021-10-21 20:15:31,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516895172] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:31,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:31,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:31,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781526944] [2021-10-21 20:15:31,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:31,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:31,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:31,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:31,705 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:31,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 141 transitions, 1046 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:31,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:31,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:31,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:32,149 INFO L129 PetriNetUnfolder]: 111/515 cut-off events. [2021-10-21 20:15:32,149 INFO L130 PetriNetUnfolder]: For 2759/2779 co-relation queries the response was YES. [2021-10-21 20:15:32,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 515 events. 111/515 cut-off events. For 2759/2779 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3032 event pairs, 42 based on Foata normal form. 2/511 useless extension candidates. Maximal degree in co-relation 2278. Up to 217 conditions per place. [2021-10-21 20:15:32,161 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 101 selfloop transitions, 15 changer transitions 27/197 dead transitions. [2021-10-21 20:15:32,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 197 transitions, 1885 flow [2021-10-21 20:15:32,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 20:15:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-21 20:15:32,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1245 transitions. [2021-10-21 20:15:32,166 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6444099378881988 [2021-10-21 20:15:32,167 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1245 transitions. [2021-10-21 20:15:32,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1245 transitions. [2021-10-21 20:15:32,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:32,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1245 transitions. [2021-10-21 20:15:32,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 59.285714285714285) internal successors, (1245), 21 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:32,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:32,176 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:32,176 INFO L186 Difference]: Start difference. First operand has 196 places, 141 transitions, 1046 flow. Second operand 21 states and 1245 transitions. [2021-10-21 20:15:32,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 197 transitions, 1885 flow [2021-10-21 20:15:32,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 197 transitions, 1740 flow, removed 58 selfloop flow, removed 8 redundant places. [2021-10-21 20:15:32,202 INFO L242 Difference]: Finished difference. Result has 217 places, 153 transitions, 1214 flow [2021-10-21 20:15:32,202 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1214, PETRI_PLACES=217, PETRI_TRANSITIONS=153} [2021-10-21 20:15:32,203 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 135 predicate places. [2021-10-21 20:15:32,203 INFO L470 AbstractCegarLoop]: Abstraction has has 217 places, 153 transitions, 1214 flow [2021-10-21 20:15:32,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:32,204 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:32,204 INFO L254 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] [2021-10-21 20:15:32,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-21 20:15:32,205 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:32,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:32,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1573883247, now seen corresponding path program 5 times [2021-10-21 20:15:32,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:32,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519322556] [2021-10-21 20:15:32,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:32,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:32,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:32,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519322556] [2021-10-21 20:15:32,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519322556] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:32,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:32,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:32,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791225677] [2021-10-21 20:15:32,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:32,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:32,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:32,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:32,339 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:32,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 153 transitions, 1214 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:32,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:32,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:32,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:32,771 INFO L129 PetriNetUnfolder]: 108/561 cut-off events. [2021-10-21 20:15:32,771 INFO L130 PetriNetUnfolder]: For 3483/3509 co-relation queries the response was YES. [2021-10-21 20:15:32,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2607 conditions, 561 events. 108/561 cut-off events. For 3483/3509 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3502 event pairs, 48 based on Foata normal form. 1/555 useless extension candidates. Maximal degree in co-relation 2506. Up to 222 conditions per place. [2021-10-21 20:15:32,783 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 101 selfloop transitions, 20 changer transitions 27/202 dead transitions. [2021-10-21 20:15:32,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 202 transitions, 2128 flow [2021-10-21 20:15:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 20:15:32,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-21 20:15:32,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1186 transitions. [2021-10-21 20:15:32,797 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6445652173913043 [2021-10-21 20:15:32,797 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1186 transitions. [2021-10-21 20:15:32,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1186 transitions. [2021-10-21 20:15:32,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:32,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1186 transitions. [2021-10-21 20:15:32,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.3) internal successors, (1186), 20 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:32,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:32,812 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:32,812 INFO L186 Difference]: Start difference. First operand has 217 places, 153 transitions, 1214 flow. Second operand 20 states and 1186 transitions. [2021-10-21 20:15:32,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 202 transitions, 2128 flow [2021-10-21 20:15:32,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 202 transitions, 1904 flow, removed 112 selfloop flow, removed 10 redundant places. [2021-10-21 20:15:32,850 INFO L242 Difference]: Finished difference. Result has 230 places, 162 transitions, 1345 flow [2021-10-21 20:15:32,851 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1345, PETRI_PLACES=230, PETRI_TRANSITIONS=162} [2021-10-21 20:15:32,851 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 148 predicate places. [2021-10-21 20:15:32,852 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 162 transitions, 1345 flow [2021-10-21 20:15:32,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:32,852 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:32,852 INFO L254 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] [2021-10-21 20:15:32,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-21 20:15:32,853 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:32,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:32,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1939505159, now seen corresponding path program 6 times [2021-10-21 20:15:32,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:32,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204513462] [2021-10-21 20:15:32,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:32,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:33,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:33,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204513462] [2021-10-21 20:15:33,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204513462] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:33,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:33,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:33,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395786657] [2021-10-21 20:15:33,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:33,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:33,016 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:33,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 162 transitions, 1345 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:33,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:33,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:33,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:33,446 INFO L129 PetriNetUnfolder]: 105/528 cut-off events. [2021-10-21 20:15:33,447 INFO L130 PetriNetUnfolder]: For 3883/3907 co-relation queries the response was YES. [2021-10-21 20:15:33,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 528 events. 105/528 cut-off events. For 3883/3907 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3205 event pairs, 39 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 2550. Up to 227 conditions per place. [2021-10-21 20:15:33,460 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 105 selfloop transitions, 25 changer transitions 30/214 dead transitions. [2021-10-21 20:15:33,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 214 transitions, 2293 flow [2021-10-21 20:15:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 20:15:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-21 20:15:33,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1187 transitions. [2021-10-21 20:15:33,463 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6451086956521739 [2021-10-21 20:15:33,464 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1187 transitions. [2021-10-21 20:15:33,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1187 transitions. [2021-10-21 20:15:33,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:33,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1187 transitions. [2021-10-21 20:15:33,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.35) internal successors, (1187), 20 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:33,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:33,473 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:33,473 INFO L186 Difference]: Start difference. First operand has 230 places, 162 transitions, 1345 flow. Second operand 20 states and 1187 transitions. [2021-10-21 20:15:33,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 214 transitions, 2293 flow [2021-10-21 20:15:33,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 214 transitions, 2124 flow, removed 75 selfloop flow, removed 11 redundant places. [2021-10-21 20:15:33,516 INFO L242 Difference]: Finished difference. Result has 241 places, 171 transitions, 1473 flow [2021-10-21 20:15:33,517 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1473, PETRI_PLACES=241, PETRI_TRANSITIONS=171} [2021-10-21 20:15:33,518 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 159 predicate places. [2021-10-21 20:15:33,519 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 171 transitions, 1473 flow [2021-10-21 20:15:33,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:33,519 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:33,519 INFO L254 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] [2021-10-21 20:15:33,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-21 20:15:33,520 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:33,520 INFO L82 PathProgramCache]: Analyzing trace with hash -197444507, now seen corresponding path program 7 times [2021-10-21 20:15:33,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:33,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304817623] [2021-10-21 20:15:33,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:33,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:33,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:33,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304817623] [2021-10-21 20:15:33,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304817623] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:33,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:33,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:33,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746846895] [2021-10-21 20:15:33,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:33,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:33,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:33,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:33,664 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:33,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 171 transitions, 1473 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:33,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:33,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:33,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:34,153 INFO L129 PetriNetUnfolder]: 102/513 cut-off events. [2021-10-21 20:15:34,153 INFO L130 PetriNetUnfolder]: For 3633/3664 co-relation queries the response was YES. [2021-10-21 20:15:34,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2601 conditions, 513 events. 102/513 cut-off events. For 3633/3664 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3116 event pairs, 35 based on Foata normal form. 7/515 useless extension candidates. Maximal degree in co-relation 2487. Up to 219 conditions per place. [2021-10-21 20:15:34,167 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 106 selfloop transitions, 26 changer transitions 33/219 dead transitions. [2021-10-21 20:15:34,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 219 transitions, 2375 flow [2021-10-21 20:15:34,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 20:15:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-21 20:15:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1298 transitions. [2021-10-21 20:15:34,172 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2021-10-21 20:15:34,172 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1298 transitions. [2021-10-21 20:15:34,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1298 transitions. [2021-10-21 20:15:34,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:34,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1298 transitions. [2021-10-21 20:15:34,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 59.0) internal successors, (1298), 22 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:34,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:34,181 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:34,182 INFO L186 Difference]: Start difference. First operand has 241 places, 171 transitions, 1473 flow. Second operand 22 states and 1298 transitions. [2021-10-21 20:15:34,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 219 transitions, 2375 flow [2021-10-21 20:15:34,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 219 transitions, 2172 flow, removed 83 selfloop flow, removed 16 redundant places. [2021-10-21 20:15:34,232 INFO L242 Difference]: Finished difference. Result has 248 places, 171 transitions, 1483 flow [2021-10-21 20:15:34,233 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1483, PETRI_PLACES=248, PETRI_TRANSITIONS=171} [2021-10-21 20:15:34,233 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 166 predicate places. [2021-10-21 20:15:34,233 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 171 transitions, 1483 flow [2021-10-21 20:15:34,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:34,234 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:34,234 INFO L254 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] [2021-10-21 20:15:34,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-21 20:15:34,235 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:34,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:34,235 INFO L82 PathProgramCache]: Analyzing trace with hash -317309847, now seen corresponding path program 8 times [2021-10-21 20:15:34,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:34,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985226897] [2021-10-21 20:15:34,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:34,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:34,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:34,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985226897] [2021-10-21 20:15:34,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985226897] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:34,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:34,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:34,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800243814] [2021-10-21 20:15:34,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:34,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:34,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:34,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:34,382 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:34,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 171 transitions, 1483 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:34,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:34,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:34,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:34,760 INFO L129 PetriNetUnfolder]: 93/480 cut-off events. [2021-10-21 20:15:34,760 INFO L130 PetriNetUnfolder]: For 3084/3117 co-relation queries the response was YES. [2021-10-21 20:15:34,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 480 events. 93/480 cut-off events. For 3084/3117 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2791 event pairs, 35 based on Foata normal form. 6/481 useless extension candidates. Maximal degree in co-relation 2269. Up to 218 conditions per place. [2021-10-21 20:15:34,772 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 98 selfloop transitions, 14 changer transitions 31/197 dead transitions. [2021-10-21 20:15:34,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 197 transitions, 2031 flow [2021-10-21 20:15:34,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:15:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 20:15:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1063 transitions. [2021-10-21 20:15:34,776 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6419082125603864 [2021-10-21 20:15:34,777 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1063 transitions. [2021-10-21 20:15:34,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1063 transitions. [2021-10-21 20:15:34,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:34,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1063 transitions. [2021-10-21 20:15:34,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.05555555555556) internal successors, (1063), 18 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:34,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:34,785 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:34,786 INFO L186 Difference]: Start difference. First operand has 248 places, 171 transitions, 1483 flow. Second operand 18 states and 1063 transitions. [2021-10-21 20:15:34,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 197 transitions, 2031 flow [2021-10-21 20:15:34,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 197 transitions, 1912 flow, removed 42 selfloop flow, removed 15 redundant places. [2021-10-21 20:15:34,834 INFO L242 Difference]: Finished difference. Result has 243 places, 156 transitions, 1272 flow [2021-10-21 20:15:34,835 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1272, PETRI_PLACES=243, PETRI_TRANSITIONS=156} [2021-10-21 20:15:34,835 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 161 predicate places. [2021-10-21 20:15:34,835 INFO L470 AbstractCegarLoop]: Abstraction has has 243 places, 156 transitions, 1272 flow [2021-10-21 20:15:34,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:34,836 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:34,836 INFO L254 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] [2021-10-21 20:15:34,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-21 20:15:34,836 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:34,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:34,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1111382289, now seen corresponding path program 9 times [2021-10-21 20:15:34,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:34,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194072488] [2021-10-21 20:15:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:34,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:35,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:35,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:35,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194072488] [2021-10-21 20:15:35,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194072488] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:35,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:35,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:35,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256300641] [2021-10-21 20:15:35,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:35,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:35,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:35,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:35,014 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:35,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 156 transitions, 1272 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:35,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:35,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:35,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:35,415 INFO L129 PetriNetUnfolder]: 96/495 cut-off events. [2021-10-21 20:15:35,416 INFO L130 PetriNetUnfolder]: For 2951/2971 co-relation queries the response was YES. [2021-10-21 20:15:35,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 495 events. 96/495 cut-off events. For 2951/2971 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2877 event pairs, 41 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 2325. Up to 218 conditions per place. [2021-10-21 20:15:35,429 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 95 selfloop transitions, 22 changer transitions 23/194 dead transitions. [2021-10-21 20:15:35,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 194 transitions, 1987 flow [2021-10-21 20:15:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:15:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 20:15:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1071 transitions. [2021-10-21 20:15:35,433 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2021-10-21 20:15:35,433 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1071 transitions. [2021-10-21 20:15:35,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1071 transitions. [2021-10-21 20:15:35,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:35,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1071 transitions. [2021-10-21 20:15:35,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.5) internal successors, (1071), 18 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:35,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:35,442 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:35,442 INFO L186 Difference]: Start difference. First operand has 243 places, 156 transitions, 1272 flow. Second operand 18 states and 1071 transitions. [2021-10-21 20:15:35,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 194 transitions, 1987 flow [2021-10-21 20:15:35,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 194 transitions, 1793 flow, removed 41 selfloop flow, removed 19 redundant places. [2021-10-21 20:15:35,481 INFO L242 Difference]: Finished difference. Result has 227 places, 165 transitions, 1361 flow [2021-10-21 20:15:35,481 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1361, PETRI_PLACES=227, PETRI_TRANSITIONS=165} [2021-10-21 20:15:35,482 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 145 predicate places. [2021-10-21 20:15:35,482 INFO L470 AbstractCegarLoop]: Abstraction has has 227 places, 165 transitions, 1361 flow [2021-10-21 20:15:35,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:35,483 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:35,483 INFO L254 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] [2021-10-21 20:15:35,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-21 20:15:35,483 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:35,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:35,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1520587631, now seen corresponding path program 10 times [2021-10-21 20:15:35,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:35,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372243992] [2021-10-21 20:15:35,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:35,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:35,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:35,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372243992] [2021-10-21 20:15:35,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372243992] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:35,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:35,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:35,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799123930] [2021-10-21 20:15:35,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:35,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:35,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:35,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:35,650 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:35,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 165 transitions, 1361 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:35,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:35,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:35,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:36,071 INFO L129 PetriNetUnfolder]: 93/482 cut-off events. [2021-10-21 20:15:36,071 INFO L130 PetriNetUnfolder]: For 2440/2460 co-relation queries the response was YES. [2021-10-21 20:15:36,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 482 events. 93/482 cut-off events. For 2440/2460 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2796 event pairs, 39 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 2200. Up to 218 conditions per place. [2021-10-21 20:15:36,083 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 96 selfloop transitions, 24 changer transitions 24/198 dead transitions. [2021-10-21 20:15:36,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 198 transitions, 1986 flow [2021-10-21 20:15:36,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:15:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-21 20:15:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1015 transitions. [2021-10-21 20:15:36,087 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6489769820971867 [2021-10-21 20:15:36,087 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1015 transitions. [2021-10-21 20:15:36,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1015 transitions. [2021-10-21 20:15:36,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:36,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1015 transitions. [2021-10-21 20:15:36,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.705882352941174) internal successors, (1015), 17 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:36,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:36,095 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:36,095 INFO L186 Difference]: Start difference. First operand has 227 places, 165 transitions, 1361 flow. Second operand 17 states and 1015 transitions. [2021-10-21 20:15:36,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 198 transitions, 1986 flow [2021-10-21 20:15:36,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 198 transitions, 1915 flow, removed 30 selfloop flow, removed 5 redundant places. [2021-10-21 20:15:36,136 INFO L242 Difference]: Finished difference. Result has 239 places, 169 transitions, 1451 flow [2021-10-21 20:15:36,137 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1451, PETRI_PLACES=239, PETRI_TRANSITIONS=169} [2021-10-21 20:15:36,137 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 157 predicate places. [2021-10-21 20:15:36,138 INFO L470 AbstractCegarLoop]: Abstraction has has 239 places, 169 transitions, 1451 flow [2021-10-21 20:15:36,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:36,138 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:36,138 INFO L254 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] [2021-10-21 20:15:36,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-21 20:15:36,139 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:36,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:36,140 INFO L82 PathProgramCache]: Analyzing trace with hash -303811921, now seen corresponding path program 11 times [2021-10-21 20:15:36,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:36,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560475100] [2021-10-21 20:15:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:36,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:36,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:36,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560475100] [2021-10-21 20:15:36,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560475100] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:36,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:36,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:36,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867599835] [2021-10-21 20:15:36,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:36,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:36,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:36,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:36,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:36,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 169 transitions, 1451 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:36,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:36,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:36,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:36,683 INFO L129 PetriNetUnfolder]: 89/471 cut-off events. [2021-10-21 20:15:36,683 INFO L130 PetriNetUnfolder]: For 2507/2533 co-relation queries the response was YES. [2021-10-21 20:15:36,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2255 conditions, 471 events. 89/471 cut-off events. For 2507/2533 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2722 event pairs, 37 based on Foata normal form. 3/468 useless extension candidates. Maximal degree in co-relation 2170. Up to 218 conditions per place. [2021-10-21 20:15:36,710 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 96 selfloop transitions, 14 changer transitions 30/194 dead transitions. [2021-10-21 20:15:36,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 194 transitions, 1969 flow [2021-10-21 20:15:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:15:36,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-21 20:15:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1012 transitions. [2021-10-21 20:15:36,714 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2021-10-21 20:15:36,714 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1012 transitions. [2021-10-21 20:15:36,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1012 transitions. [2021-10-21 20:15:36,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:36,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1012 transitions. [2021-10-21 20:15:36,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.529411764705884) internal successors, (1012), 17 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:36,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:36,722 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:36,722 INFO L186 Difference]: Start difference. First operand has 239 places, 169 transitions, 1451 flow. Second operand 17 states and 1012 transitions. [2021-10-21 20:15:36,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 194 transitions, 1969 flow [2021-10-21 20:15:36,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 194 transitions, 1876 flow, removed 25 selfloop flow, removed 8 redundant places. [2021-10-21 20:15:36,762 INFO L242 Difference]: Finished difference. Result has 246 places, 160 transitions, 1306 flow [2021-10-21 20:15:36,762 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1306, PETRI_PLACES=246, PETRI_TRANSITIONS=160} [2021-10-21 20:15:36,762 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 164 predicate places. [2021-10-21 20:15:36,763 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 160 transitions, 1306 flow [2021-10-21 20:15:36,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:36,763 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:36,763 INFO L254 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] [2021-10-21 20:15:36,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-21 20:15:36,764 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:36,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:36,764 INFO L82 PathProgramCache]: Analyzing trace with hash 820857339, now seen corresponding path program 12 times [2021-10-21 20:15:36,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:36,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567679570] [2021-10-21 20:15:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:36,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:36,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:36,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567679570] [2021-10-21 20:15:36,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567679570] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:36,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:36,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:36,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749316458] [2021-10-21 20:15:36,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:36,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:36,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:36,894 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:36,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 160 transitions, 1306 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:36,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:36,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:36,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:37,283 INFO L129 PetriNetUnfolder]: 82/441 cut-off events. [2021-10-21 20:15:37,283 INFO L130 PetriNetUnfolder]: For 2357/2377 co-relation queries the response was YES. [2021-10-21 20:15:37,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 441 events. 82/441 cut-off events. For 2357/2377 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2424 event pairs, 39 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 1976. Up to 211 conditions per place. [2021-10-21 20:15:37,297 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 86 selfloop transitions, 3 changer transitions 33/176 dead transitions. [2021-10-21 20:15:37,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 176 transitions, 1679 flow [2021-10-21 20:15:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:15:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 20:15:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1059 transitions. [2021-10-21 20:15:37,302 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6394927536231884 [2021-10-21 20:15:37,302 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1059 transitions. [2021-10-21 20:15:37,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1059 transitions. [2021-10-21 20:15:37,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:37,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1059 transitions. [2021-10-21 20:15:37,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.833333333333336) internal successors, (1059), 18 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:37,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:37,314 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:37,314 INFO L186 Difference]: Start difference. First operand has 246 places, 160 transitions, 1306 flow. Second operand 18 states and 1059 transitions. [2021-10-21 20:15:37,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 176 transitions, 1679 flow [2021-10-21 20:15:37,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 176 transitions, 1561 flow, removed 25 selfloop flow, removed 22 redundant places. [2021-10-21 20:15:37,345 INFO L242 Difference]: Finished difference. Result has 230 places, 140 transitions, 1028 flow [2021-10-21 20:15:37,345 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1028, PETRI_PLACES=230, PETRI_TRANSITIONS=140} [2021-10-21 20:15:37,345 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 148 predicate places. [2021-10-21 20:15:37,346 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 140 transitions, 1028 flow [2021-10-21 20:15:37,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:37,346 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:37,347 INFO L254 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] [2021-10-21 20:15:37,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-21 20:15:37,347 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:37,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:37,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1298365229, now seen corresponding path program 13 times [2021-10-21 20:15:37,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:37,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327422346] [2021-10-21 20:15:37,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:37,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:37,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:37,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327422346] [2021-10-21 20:15:37,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327422346] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:37,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:37,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:37,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143116581] [2021-10-21 20:15:37,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:37,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:37,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:37,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:37,487 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:37,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 140 transitions, 1028 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:37,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:37,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:37,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:37,990 INFO L129 PetriNetUnfolder]: 88/460 cut-off events. [2021-10-21 20:15:37,990 INFO L130 PetriNetUnfolder]: For 2339/2356 co-relation queries the response was YES. [2021-10-21 20:15:38,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 460 events. 88/460 cut-off events. For 2339/2356 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2583 event pairs, 34 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 2009. Up to 198 conditions per place. [2021-10-21 20:15:38,016 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 90 selfloop transitions, 19 changer transitions 28/191 dead transitions. [2021-10-21 20:15:38,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 191 transitions, 1822 flow [2021-10-21 20:15:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 20:15:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-21 20:15:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1295 transitions. [2021-10-21 20:15:38,027 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6398221343873518 [2021-10-21 20:15:38,027 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1295 transitions. [2021-10-21 20:15:38,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1295 transitions. [2021-10-21 20:15:38,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:38,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1295 transitions. [2021-10-21 20:15:38,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.86363636363637) internal successors, (1295), 22 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:38,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:38,049 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:38,050 INFO L186 Difference]: Start difference. First operand has 230 places, 140 transitions, 1028 flow. Second operand 22 states and 1295 transitions. [2021-10-21 20:15:38,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 191 transitions, 1822 flow [2021-10-21 20:15:38,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 191 transitions, 1607 flow, removed 39 selfloop flow, removed 23 redundant places. [2021-10-21 20:15:38,082 INFO L242 Difference]: Finished difference. Result has 214 places, 151 transitions, 1136 flow [2021-10-21 20:15:38,083 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1136, PETRI_PLACES=214, PETRI_TRANSITIONS=151} [2021-10-21 20:15:38,083 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 132 predicate places. [2021-10-21 20:15:38,083 INFO L470 AbstractCegarLoop]: Abstraction has has 214 places, 151 transitions, 1136 flow [2021-10-21 20:15:38,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:38,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:38,084 INFO L254 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] [2021-10-21 20:15:38,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-21 20:15:38,084 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:38,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:38,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1557370829, now seen corresponding path program 14 times [2021-10-21 20:15:38,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:38,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930723967] [2021-10-21 20:15:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:38,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:38,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:38,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930723967] [2021-10-21 20:15:38,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930723967] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:38,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:38,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:38,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087435088] [2021-10-21 20:15:38,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:38,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:38,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:38,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:38,262 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:38,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 151 transitions, 1136 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:38,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:38,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:38,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:38,723 INFO L129 PetriNetUnfolder]: 85/444 cut-off events. [2021-10-21 20:15:38,724 INFO L130 PetriNetUnfolder]: For 2049/2066 co-relation queries the response was YES. [2021-10-21 20:15:38,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 444 events. 85/444 cut-off events. For 2049/2066 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2445 event pairs, 34 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1963. Up to 196 conditions per place. [2021-10-21 20:15:38,738 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 87 selfloop transitions, 21 changer transitions 29/191 dead transitions. [2021-10-21 20:15:38,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 191 transitions, 1810 flow [2021-10-21 20:15:38,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 20:15:38,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-21 20:15:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1239 transitions. [2021-10-21 20:15:38,742 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2021-10-21 20:15:38,742 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1239 transitions. [2021-10-21 20:15:38,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1239 transitions. [2021-10-21 20:15:38,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:38,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1239 transitions. [2021-10-21 20:15:38,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 59.0) internal successors, (1239), 21 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:38,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:38,753 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:38,753 INFO L186 Difference]: Start difference. First operand has 214 places, 151 transitions, 1136 flow. Second operand 21 states and 1239 transitions. [2021-10-21 20:15:38,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 191 transitions, 1810 flow [2021-10-21 20:15:38,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 191 transitions, 1682 flow, removed 58 selfloop flow, removed 11 redundant places. [2021-10-21 20:15:38,785 INFO L242 Difference]: Finished difference. Result has 223 places, 153 transitions, 1207 flow [2021-10-21 20:15:38,786 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1207, PETRI_PLACES=223, PETRI_TRANSITIONS=153} [2021-10-21 20:15:38,786 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 141 predicate places. [2021-10-21 20:15:38,786 INFO L470 AbstractCegarLoop]: Abstraction has has 223 places, 153 transitions, 1207 flow [2021-10-21 20:15:38,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:38,787 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:38,787 INFO L254 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] [2021-10-21 20:15:38,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-21 20:15:38,788 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:38,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:38,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1253576493, now seen corresponding path program 15 times [2021-10-21 20:15:38,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:38,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662139244] [2021-10-21 20:15:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:38,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:38,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:38,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662139244] [2021-10-21 20:15:38,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662139244] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:38,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:38,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:38,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433573028] [2021-10-21 20:15:38,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:38,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:38,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:38,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:38,954 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:38,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 153 transitions, 1207 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:38,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:38,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:38,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:39,330 INFO L129 PetriNetUnfolder]: 80/445 cut-off events. [2021-10-21 20:15:39,330 INFO L130 PetriNetUnfolder]: For 2204/2221 co-relation queries the response was YES. [2021-10-21 20:15:39,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 445 events. 80/445 cut-off events. For 2204/2221 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2498 event pairs, 32 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 1978. Up to 201 conditions per place. [2021-10-21 20:15:39,339 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 85 selfloop transitions, 22 changer transitions 25/186 dead transitions. [2021-10-21 20:15:39,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 186 transitions, 1816 flow [2021-10-21 20:15:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:15:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 20:15:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 953 transitions. [2021-10-21 20:15:39,342 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6474184782608695 [2021-10-21 20:15:39,343 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 953 transitions. [2021-10-21 20:15:39,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 953 transitions. [2021-10-21 20:15:39,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:39,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 953 transitions. [2021-10-21 20:15:39,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 59.5625) internal successors, (953), 16 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:39,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:39,350 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:39,351 INFO L186 Difference]: Start difference. First operand has 223 places, 153 transitions, 1207 flow. Second operand 16 states and 953 transitions. [2021-10-21 20:15:39,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 186 transitions, 1816 flow [2021-10-21 20:15:39,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 186 transitions, 1667 flow, removed 49 selfloop flow, removed 18 redundant places. [2021-10-21 20:15:39,382 INFO L242 Difference]: Finished difference. Result has 216 places, 158 transitions, 1256 flow [2021-10-21 20:15:39,382 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1256, PETRI_PLACES=216, PETRI_TRANSITIONS=158} [2021-10-21 20:15:39,383 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 134 predicate places. [2021-10-21 20:15:39,383 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 158 transitions, 1256 flow [2021-10-21 20:15:39,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:39,384 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:39,384 INFO L254 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] [2021-10-21 20:15:39,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-21 20:15:39,384 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:39,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:39,385 INFO L82 PathProgramCache]: Analyzing trace with hash 968773801, now seen corresponding path program 16 times [2021-10-21 20:15:39,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:39,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720097209] [2021-10-21 20:15:39,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:39,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:39,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:39,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720097209] [2021-10-21 20:15:39,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720097209] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:39,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:39,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:39,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477751463] [2021-10-21 20:15:39,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:39,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:39,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:39,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:39,521 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:39,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 158 transitions, 1256 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:39,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:39,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:39,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:39,886 INFO L129 PetriNetUnfolder]: 73/405 cut-off events. [2021-10-21 20:15:39,886 INFO L130 PetriNetUnfolder]: For 1876/1893 co-relation queries the response was YES. [2021-10-21 20:15:39,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1880 conditions, 405 events. 73/405 cut-off events. For 1876/1893 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2166 event pairs, 32 based on Foata normal form. 1/402 useless extension candidates. Maximal degree in co-relation 1809. Up to 195 conditions per place. [2021-10-21 20:15:39,895 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 82 selfloop transitions, 10 changer transitions 30/176 dead transitions. [2021-10-21 20:15:39,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 176 transitions, 1641 flow [2021-10-21 20:15:39,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:15:39,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 20:15:39,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1060 transitions. [2021-10-21 20:15:39,899 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6400966183574879 [2021-10-21 20:15:39,899 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1060 transitions. [2021-10-21 20:15:39,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1060 transitions. [2021-10-21 20:15:39,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:39,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1060 transitions. [2021-10-21 20:15:39,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.888888888888886) internal successors, (1060), 18 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:39,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:39,908 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:39,908 INFO L186 Difference]: Start difference. First operand has 216 places, 158 transitions, 1256 flow. Second operand 18 states and 1060 transitions. [2021-10-21 20:15:39,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 176 transitions, 1641 flow [2021-10-21 20:15:39,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 176 transitions, 1539 flow, removed 29 selfloop flow, removed 9 redundant places. [2021-10-21 20:15:39,938 INFO L242 Difference]: Finished difference. Result has 224 places, 143 transitions, 1058 flow [2021-10-21 20:15:39,939 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1058, PETRI_PLACES=224, PETRI_TRANSITIONS=143} [2021-10-21 20:15:39,939 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 142 predicate places. [2021-10-21 20:15:39,939 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 143 transitions, 1058 flow [2021-10-21 20:15:39,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:39,940 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:39,940 INFO L254 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] [2021-10-21 20:15:39,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-21 20:15:39,941 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:39,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:39,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1141183217, now seen corresponding path program 17 times [2021-10-21 20:15:39,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:39,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999842920] [2021-10-21 20:15:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:39,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:40,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:40,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999842920] [2021-10-21 20:15:40,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999842920] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:40,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:40,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:40,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733747283] [2021-10-21 20:15:40,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:40,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:40,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:40,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:40,082 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:40,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 143 transitions, 1058 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:40,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:40,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:40,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:40,498 INFO L129 PetriNetUnfolder]: 76/416 cut-off events. [2021-10-21 20:15:40,499 INFO L130 PetriNetUnfolder]: For 1938/1955 co-relation queries the response was YES. [2021-10-21 20:15:40,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 416 events. 76/416 cut-off events. For 1938/1955 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2252 event pairs, 32 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 1832. Up to 195 conditions per place. [2021-10-21 20:15:40,506 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 80 selfloop transitions, 20 changer transitions 23/177 dead transitions. [2021-10-21 20:15:40,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 177 transitions, 1646 flow [2021-10-21 20:15:40,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:15:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 20:15:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1065 transitions. [2021-10-21 20:15:40,509 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6431159420289855 [2021-10-21 20:15:40,509 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1065 transitions. [2021-10-21 20:15:40,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1065 transitions. [2021-10-21 20:15:40,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:40,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1065 transitions. [2021-10-21 20:15:40,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.166666666666664) internal successors, (1065), 18 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:40,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:40,517 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:40,517 INFO L186 Difference]: Start difference. First operand has 224 places, 143 transitions, 1058 flow. Second operand 18 states and 1065 transitions. [2021-10-21 20:15:40,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 177 transitions, 1646 flow [2021-10-21 20:15:40,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 177 transitions, 1500 flow, removed 25 selfloop flow, removed 18 redundant places. [2021-10-21 20:15:40,545 INFO L242 Difference]: Finished difference. Result has 209 places, 152 transitions, 1171 flow [2021-10-21 20:15:40,545 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1171, PETRI_PLACES=209, PETRI_TRANSITIONS=152} [2021-10-21 20:15:40,546 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 127 predicate places. [2021-10-21 20:15:40,547 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 152 transitions, 1171 flow [2021-10-21 20:15:40,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:40,547 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:40,547 INFO L254 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] [2021-10-21 20:15:40,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-21 20:15:40,548 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:40,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1725666035, now seen corresponding path program 18 times [2021-10-21 20:15:40,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:40,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768491179] [2021-10-21 20:15:40,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:40,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:40,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:40,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768491179] [2021-10-21 20:15:40,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768491179] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:40,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:40,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:40,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345485108] [2021-10-21 20:15:40,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:40,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:40,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:40,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:40,700 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:40,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 152 transitions, 1171 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:40,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:40,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:40,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:41,080 INFO L129 PetriNetUnfolder]: 73/428 cut-off events. [2021-10-21 20:15:41,081 INFO L130 PetriNetUnfolder]: For 1757/1774 co-relation queries the response was YES. [2021-10-21 20:15:41,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 428 events. 73/428 cut-off events. For 1757/1774 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2350 event pairs, 30 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 1807. Up to 195 conditions per place. [2021-10-21 20:15:41,089 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 81 selfloop transitions, 22 changer transitions 24/181 dead transitions. [2021-10-21 20:15:41,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 181 transitions, 1693 flow [2021-10-21 20:15:41,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:15:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-21 20:15:41,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1009 transitions. [2021-10-21 20:15:41,093 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6451406649616368 [2021-10-21 20:15:41,093 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1009 transitions. [2021-10-21 20:15:41,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1009 transitions. [2021-10-21 20:15:41,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:41,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1009 transitions. [2021-10-21 20:15:41,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.35294117647059) internal successors, (1009), 17 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:41,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:41,101 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:41,101 INFO L186 Difference]: Start difference. First operand has 209 places, 152 transitions, 1171 flow. Second operand 17 states and 1009 transitions. [2021-10-21 20:15:41,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 181 transitions, 1693 flow [2021-10-21 20:15:41,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 181 transitions, 1612 flow, removed 36 selfloop flow, removed 5 redundant places. [2021-10-21 20:15:41,129 INFO L242 Difference]: Finished difference. Result has 221 places, 156 transitions, 1253 flow [2021-10-21 20:15:41,129 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1253, PETRI_PLACES=221, PETRI_TRANSITIONS=156} [2021-10-21 20:15:41,130 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 139 predicate places. [2021-10-21 20:15:41,130 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 156 transitions, 1253 flow [2021-10-21 20:15:41,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:41,130 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:41,131 INFO L254 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] [2021-10-21 20:15:41,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-21 20:15:41,131 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:41,132 INFO L82 PathProgramCache]: Analyzing trace with hash -100897857, now seen corresponding path program 19 times [2021-10-21 20:15:41,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:41,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277851072] [2021-10-21 20:15:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:41,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:41,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:41,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277851072] [2021-10-21 20:15:41,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277851072] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:41,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:41,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:41,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024217136] [2021-10-21 20:15:41,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:41,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:41,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:41,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:41,271 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:41,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 156 transitions, 1253 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:41,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:41,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:41,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:41,670 INFO L129 PetriNetUnfolder]: 69/407 cut-off events. [2021-10-21 20:15:41,671 INFO L130 PetriNetUnfolder]: For 1743/1760 co-relation queries the response was YES. [2021-10-21 20:15:41,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1842 conditions, 407 events. 69/407 cut-off events. For 1743/1760 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2203 event pairs, 30 based on Foata normal form. 1/404 useless extension candidates. Maximal degree in co-relation 1768. Up to 195 conditions per place. [2021-10-21 20:15:41,679 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 80 selfloop transitions, 13 changer transitions 29/176 dead transitions. [2021-10-21 20:15:41,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 176 transitions, 1663 flow [2021-10-21 20:15:41,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:15:41,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 20:15:41,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1062 transitions. [2021-10-21 20:15:41,684 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2021-10-21 20:15:41,685 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1062 transitions. [2021-10-21 20:15:41,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1062 transitions. [2021-10-21 20:15:41,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:41,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1062 transitions. [2021-10-21 20:15:41,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.0) internal successors, (1062), 18 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:41,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:41,694 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:41,694 INFO L186 Difference]: Start difference. First operand has 221 places, 156 transitions, 1253 flow. Second operand 18 states and 1062 transitions. [2021-10-21 20:15:41,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 176 transitions, 1663 flow [2021-10-21 20:15:41,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 176 transitions, 1556 flow, removed 33 selfloop flow, removed 8 redundant places. [2021-10-21 20:15:41,726 INFO L242 Difference]: Finished difference. Result has 230 places, 147 transitions, 1119 flow [2021-10-21 20:15:41,726 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1119, PETRI_PLACES=230, PETRI_TRANSITIONS=147} [2021-10-21 20:15:41,726 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 148 predicate places. [2021-10-21 20:15:41,726 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 147 transitions, 1119 flow [2021-10-21 20:15:41,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:41,727 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:41,727 INFO L254 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] [2021-10-21 20:15:41,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-21 20:15:41,728 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:41,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:41,728 INFO L82 PathProgramCache]: Analyzing trace with hash 78205775, now seen corresponding path program 20 times [2021-10-21 20:15:41,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:41,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20640225] [2021-10-21 20:15:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:41,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:41,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:41,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20640225] [2021-10-21 20:15:41,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20640225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:41,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:41,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:41,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674916964] [2021-10-21 20:15:41,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:41,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:41,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:41,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:41,883 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:41,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 147 transitions, 1119 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:41,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:41,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:41,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:42,185 INFO L129 PetriNetUnfolder]: 63/346 cut-off events. [2021-10-21 20:15:42,186 INFO L130 PetriNetUnfolder]: For 1575/1592 co-relation queries the response was YES. [2021-10-21 20:15:42,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 346 events. 63/346 cut-off events. For 1575/1592 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1755 event pairs, 30 based on Foata normal form. 1/343 useless extension candidates. Maximal degree in co-relation 1529. Up to 176 conditions per place. [2021-10-21 20:15:42,193 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 67 selfloop transitions, 0 changer transitions 43/158 dead transitions. [2021-10-21 20:15:42,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 158 transitions, 1392 flow [2021-10-21 20:15:42,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:15:42,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-21 20:15:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 998 transitions. [2021-10-21 20:15:42,211 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6381074168797954 [2021-10-21 20:15:42,212 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 998 transitions. [2021-10-21 20:15:42,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 998 transitions. [2021-10-21 20:15:42,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:42,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 998 transitions. [2021-10-21 20:15:42,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 58.705882352941174) internal successors, (998), 17 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:42,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:42,219 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:42,219 INFO L186 Difference]: Start difference. First operand has 230 places, 147 transitions, 1119 flow. Second operand 17 states and 998 transitions. [2021-10-21 20:15:42,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 158 transitions, 1392 flow [2021-10-21 20:15:42,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 158 transitions, 1288 flow, removed 27 selfloop flow, removed 21 redundant places. [2021-10-21 20:15:42,241 INFO L242 Difference]: Finished difference. Result has 211 places, 115 transitions, 785 flow [2021-10-21 20:15:42,242 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=785, PETRI_PLACES=211, PETRI_TRANSITIONS=115} [2021-10-21 20:15:42,242 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 129 predicate places. [2021-10-21 20:15:42,242 INFO L470 AbstractCegarLoop]: Abstraction has has 211 places, 115 transitions, 785 flow [2021-10-21 20:15:42,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:42,243 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:42,243 INFO L254 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] [2021-10-21 20:15:42,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-21 20:15:42,243 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:42,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:42,244 INFO L82 PathProgramCache]: Analyzing trace with hash 68284651, now seen corresponding path program 7 times [2021-10-21 20:15:42,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:42,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442155531] [2021-10-21 20:15:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:42,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:42,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:42,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442155531] [2021-10-21 20:15:42,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442155531] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:42,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:42,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:42,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037051022] [2021-10-21 20:15:42,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:42,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:42,359 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:42,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 115 transitions, 785 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:42,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:42,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:42,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:42,750 INFO L129 PetriNetUnfolder]: 60/318 cut-off events. [2021-10-21 20:15:42,750 INFO L130 PetriNetUnfolder]: For 1535/1540 co-relation queries the response was YES. [2021-10-21 20:15:42,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 318 events. 60/318 cut-off events. For 1535/1540 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1548 event pairs, 7 based on Foata normal form. 1/318 useless extension candidates. Maximal degree in co-relation 1365. Up to 55 conditions per place. [2021-10-21 20:15:42,756 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 64 selfloop transitions, 30 changer transitions 25/167 dead transitions. [2021-10-21 20:15:42,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 167 transitions, 1607 flow [2021-10-21 20:15:42,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 20:15:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-21 20:15:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1288 transitions. [2021-10-21 20:15:42,760 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2021-10-21 20:15:42,760 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1288 transitions. [2021-10-21 20:15:42,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1288 transitions. [2021-10-21 20:15:42,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:42,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1288 transitions. [2021-10-21 20:15:42,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.54545454545455) internal successors, (1288), 22 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:42,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:42,769 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 92.0) internal successors, (2116), 23 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:42,769 INFO L186 Difference]: Start difference. First operand has 211 places, 115 transitions, 785 flow. Second operand 22 states and 1288 transitions. [2021-10-21 20:15:42,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 167 transitions, 1607 flow [2021-10-21 20:15:42,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 167 transitions, 1584 flow, removed 6 selfloop flow, removed 9 redundant places. [2021-10-21 20:15:42,786 INFO L242 Difference]: Finished difference. Result has 192 places, 120 transitions, 951 flow [2021-10-21 20:15:42,786 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=951, PETRI_PLACES=192, PETRI_TRANSITIONS=120} [2021-10-21 20:15:42,786 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 110 predicate places. [2021-10-21 20:15:42,787 INFO L470 AbstractCegarLoop]: Abstraction has has 192 places, 120 transitions, 951 flow [2021-10-21 20:15:42,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:42,787 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:42,787 INFO L254 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] [2021-10-21 20:15:42,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-21 20:15:42,788 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:42,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:42,788 INFO L82 PathProgramCache]: Analyzing trace with hash -2021917595, now seen corresponding path program 8 times [2021-10-21 20:15:42,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:42,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26312464] [2021-10-21 20:15:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:42,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:42,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:42,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26312464] [2021-10-21 20:15:42,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26312464] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:42,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:42,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:42,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696400515] [2021-10-21 20:15:42,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:42,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:42,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:42,930 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:42,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 120 transitions, 951 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:42,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:42,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:42,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:43,242 INFO L129 PetriNetUnfolder]: 55/295 cut-off events. [2021-10-21 20:15:43,242 INFO L130 PetriNetUnfolder]: For 2229/2241 co-relation queries the response was YES. [2021-10-21 20:15:43,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 295 events. 55/295 cut-off events. For 2229/2241 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1358 event pairs, 7 based on Foata normal form. 3/297 useless extension candidates. Maximal degree in co-relation 1483. Up to 60 conditions per place. [2021-10-21 20:15:43,247 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 58 selfloop transitions, 32 changer transitions 21/159 dead transitions. [2021-10-21 20:15:43,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 159 transitions, 1703 flow [2021-10-21 20:15:43,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:15:43,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 20:15:43,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 946 transitions. [2021-10-21 20:15:43,251 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6426630434782609 [2021-10-21 20:15:43,251 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 946 transitions. [2021-10-21 20:15:43,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 946 transitions. [2021-10-21 20:15:43,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:43,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 946 transitions. [2021-10-21 20:15:43,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 59.125) internal successors, (946), 16 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:43,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:43,257 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:43,257 INFO L186 Difference]: Start difference. First operand has 192 places, 120 transitions, 951 flow. Second operand 16 states and 946 transitions. [2021-10-21 20:15:43,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 159 transitions, 1703 flow [2021-10-21 20:15:43,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 159 transitions, 1548 flow, removed 64 selfloop flow, removed 12 redundant places. [2021-10-21 20:15:43,279 INFO L242 Difference]: Finished difference. Result has 190 places, 125 transitions, 1050 flow [2021-10-21 20:15:43,279 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1050, PETRI_PLACES=190, PETRI_TRANSITIONS=125} [2021-10-21 20:15:43,279 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 108 predicate places. [2021-10-21 20:15:43,279 INFO L470 AbstractCegarLoop]: Abstraction has has 190 places, 125 transitions, 1050 flow [2021-10-21 20:15:43,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:43,280 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:43,280 INFO L254 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] [2021-10-21 20:15:43,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-21 20:15:43,281 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:43,281 INFO L82 PathProgramCache]: Analyzing trace with hash 13810053, now seen corresponding path program 9 times [2021-10-21 20:15:43,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:43,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579755429] [2021-10-21 20:15:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:43,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:43,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:43,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579755429] [2021-10-21 20:15:43,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579755429] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:43,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:43,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:43,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892100013] [2021-10-21 20:15:43,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:43,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:43,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:43,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:43,441 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:43,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 125 transitions, 1050 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:43,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:43,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:43,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:43,758 INFO L129 PetriNetUnfolder]: 48/273 cut-off events. [2021-10-21 20:15:43,758 INFO L130 PetriNetUnfolder]: For 1861/1877 co-relation queries the response was YES. [2021-10-21 20:15:43,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 273 events. 48/273 cut-off events. For 1861/1877 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1197 event pairs, 7 based on Foata normal form. 7/279 useless extension candidates. Maximal degree in co-relation 1327. Up to 54 conditions per place. [2021-10-21 20:15:43,764 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 54 selfloop transitions, 20 changer transitions 27/149 dead transitions. [2021-10-21 20:15:43,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 149 transitions, 1512 flow [2021-10-21 20:15:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:15:43,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 20:15:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1053 transitions. [2021-10-21 20:15:43,769 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6358695652173914 [2021-10-21 20:15:43,769 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1053 transitions. [2021-10-21 20:15:43,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1053 transitions. [2021-10-21 20:15:43,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:43,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1053 transitions. [2021-10-21 20:15:43,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.5) internal successors, (1053), 18 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:43,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:43,777 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:43,777 INFO L186 Difference]: Start difference. First operand has 190 places, 125 transitions, 1050 flow. Second operand 18 states and 1053 transitions. [2021-10-21 20:15:43,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 149 transitions, 1512 flow [2021-10-21 20:15:43,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 149 transitions, 1378 flow, removed 35 selfloop flow, removed 9 redundant places. [2021-10-21 20:15:43,800 INFO L242 Difference]: Finished difference. Result has 198 places, 110 transitions, 803 flow [2021-10-21 20:15:43,800 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=803, PETRI_PLACES=198, PETRI_TRANSITIONS=110} [2021-10-21 20:15:43,801 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 116 predicate places. [2021-10-21 20:15:43,801 INFO L470 AbstractCegarLoop]: Abstraction has has 198 places, 110 transitions, 803 flow [2021-10-21 20:15:43,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:43,802 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:43,802 INFO L254 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] [2021-10-21 20:15:43,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-21 20:15:43,802 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:43,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1899785425, now seen corresponding path program 10 times [2021-10-21 20:15:43,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:43,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245131978] [2021-10-21 20:15:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:43,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:43,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:43,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245131978] [2021-10-21 20:15:43,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245131978] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:43,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:43,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:43,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366160914] [2021-10-21 20:15:43,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:43,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:43,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:43,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:43,963 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:43,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 110 transitions, 803 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:43,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:43,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:43,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:44,305 INFO L129 PetriNetUnfolder]: 51/269 cut-off events. [2021-10-21 20:15:44,306 INFO L130 PetriNetUnfolder]: For 1875/1886 co-relation queries the response was YES. [2021-10-21 20:15:44,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1411 conditions, 269 events. 51/269 cut-off events. For 1875/1886 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1143 event pairs, 14 based on Foata normal form. 3/270 useless extension candidates. Maximal degree in co-relation 1341. Up to 69 conditions per place. [2021-10-21 20:15:44,311 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 49 selfloop transitions, 28 changer transitions 19/144 dead transitions. [2021-10-21 20:15:44,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 144 transitions, 1424 flow [2021-10-21 20:15:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:15:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 20:15:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1061 transitions. [2021-10-21 20:15:44,314 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6407004830917874 [2021-10-21 20:15:44,314 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1061 transitions. [2021-10-21 20:15:44,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1061 transitions. [2021-10-21 20:15:44,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:44,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1061 transitions. [2021-10-21 20:15:44,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.94444444444444) internal successors, (1061), 18 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:44,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:44,321 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:44,321 INFO L186 Difference]: Start difference. First operand has 198 places, 110 transitions, 803 flow. Second operand 18 states and 1061 transitions. [2021-10-21 20:15:44,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 144 transitions, 1424 flow [2021-10-21 20:15:44,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 144 transitions, 1249 flow, removed 32 selfloop flow, removed 19 redundant places. [2021-10-21 20:15:44,340 INFO L242 Difference]: Finished difference. Result has 182 places, 119 transitions, 909 flow [2021-10-21 20:15:44,341 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=909, PETRI_PLACES=182, PETRI_TRANSITIONS=119} [2021-10-21 20:15:44,341 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 100 predicate places. [2021-10-21 20:15:44,341 INFO L470 AbstractCegarLoop]: Abstraction has has 182 places, 119 transitions, 909 flow [2021-10-21 20:15:44,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:44,342 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:44,342 INFO L254 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] [2021-10-21 20:15:44,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-21 20:15:44,343 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:44,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:44,343 INFO L82 PathProgramCache]: Analyzing trace with hash -138731753, now seen corresponding path program 11 times [2021-10-21 20:15:44,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:44,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752680957] [2021-10-21 20:15:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:44,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:44,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:44,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752680957] [2021-10-21 20:15:44,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752680957] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:44,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:44,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:44,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444110976] [2021-10-21 20:15:44,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:44,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:44,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:44,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:44,496 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:44,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 119 transitions, 909 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:44,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:44,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:44,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:44,768 INFO L129 PetriNetUnfolder]: 48/264 cut-off events. [2021-10-21 20:15:44,768 INFO L130 PetriNetUnfolder]: For 1439/1450 co-relation queries the response was YES. [2021-10-21 20:15:44,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 264 events. 48/264 cut-off events. For 1439/1450 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1138 event pairs, 12 based on Foata normal form. 3/265 useless extension candidates. Maximal degree in co-relation 1254. Up to 67 conditions per place. [2021-10-21 20:15:44,772 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 50 selfloop transitions, 30 changer transitions 20/148 dead transitions. [2021-10-21 20:15:44,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 148 transitions, 1461 flow [2021-10-21 20:15:44,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:15:44,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-21 20:15:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1005 transitions. [2021-10-21 20:15:44,775 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6425831202046036 [2021-10-21 20:15:44,775 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1005 transitions. [2021-10-21 20:15:44,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1005 transitions. [2021-10-21 20:15:44,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:44,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1005 transitions. [2021-10-21 20:15:44,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.11764705882353) internal successors, (1005), 17 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:44,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:44,782 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:44,782 INFO L186 Difference]: Start difference. First operand has 182 places, 119 transitions, 909 flow. Second operand 17 states and 1005 transitions. [2021-10-21 20:15:44,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 148 transitions, 1461 flow [2021-10-21 20:15:44,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 148 transitions, 1378 flow, removed 33 selfloop flow, removed 6 redundant places. [2021-10-21 20:15:44,799 INFO L242 Difference]: Finished difference. Result has 193 places, 123 transitions, 1008 flow [2021-10-21 20:15:44,800 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1008, PETRI_PLACES=193, PETRI_TRANSITIONS=123} [2021-10-21 20:15:44,800 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 111 predicate places. [2021-10-21 20:15:44,801 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 123 transitions, 1008 flow [2021-10-21 20:15:44,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:44,801 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:44,802 INFO L254 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] [2021-10-21 20:15:44,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-21 20:15:44,802 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:44,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:44,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1749198423, now seen corresponding path program 12 times [2021-10-21 20:15:44,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:44,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110363694] [2021-10-21 20:15:44,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:44,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:44,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:44,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110363694] [2021-10-21 20:15:44,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110363694] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:44,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:44,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:44,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630377945] [2021-10-21 20:15:44,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:44,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:44,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:44,938 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:44,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 123 transitions, 1008 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:44,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:44,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:44,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:45,186 INFO L129 PetriNetUnfolder]: 44/258 cut-off events. [2021-10-21 20:15:45,187 INFO L130 PetriNetUnfolder]: For 1499/1505 co-relation queries the response was YES. [2021-10-21 20:15:45,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 258 events. 44/258 cut-off events. For 1499/1505 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1089 event pairs, 14 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 1221. Up to 66 conditions per place. [2021-10-21 20:15:45,191 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 50 selfloop transitions, 20 changer transitions 26/144 dead transitions. [2021-10-21 20:15:45,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 144 transitions, 1439 flow [2021-10-21 20:15:45,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:15:45,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-21 20:15:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1002 transitions. [2021-10-21 20:15:45,194 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6406649616368286 [2021-10-21 20:15:45,194 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1002 transitions. [2021-10-21 20:15:45,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1002 transitions. [2021-10-21 20:15:45,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:45,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1002 transitions. [2021-10-21 20:15:45,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 58.94117647058823) internal successors, (1002), 17 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:45,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:45,199 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:45,199 INFO L186 Difference]: Start difference. First operand has 193 places, 123 transitions, 1008 flow. Second operand 17 states and 1002 transitions. [2021-10-21 20:15:45,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 144 transitions, 1439 flow [2021-10-21 20:15:45,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 144 transitions, 1346 flow, removed 22 selfloop flow, removed 8 redundant places. [2021-10-21 20:15:45,219 INFO L242 Difference]: Finished difference. Result has 200 places, 114 transitions, 862 flow [2021-10-21 20:15:45,219 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=862, PETRI_PLACES=200, PETRI_TRANSITIONS=114} [2021-10-21 20:15:45,219 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 118 predicate places. [2021-10-21 20:15:45,219 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 114 transitions, 862 flow [2021-10-21 20:15:45,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:45,220 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:45,220 INFO L254 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] [2021-10-21 20:15:45,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-21 20:15:45,220 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:45,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:45,221 INFO L82 PathProgramCache]: Analyzing trace with hash 538441871, now seen corresponding path program 13 times [2021-10-21 20:15:45,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:45,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637465093] [2021-10-21 20:15:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:45,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:45,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:45,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637465093] [2021-10-21 20:15:45,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637465093] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:45,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:45,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:45,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071278509] [2021-10-21 20:15:45,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:45,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:45,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:45,347 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:45,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 114 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:45,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:45,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:45,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:45,638 INFO L129 PetriNetUnfolder]: 37/223 cut-off events. [2021-10-21 20:15:45,638 INFO L130 PetriNetUnfolder]: For 1373/1384 co-relation queries the response was YES. [2021-10-21 20:15:45,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 223 events. 37/223 cut-off events. For 1373/1384 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 828 event pairs, 12 based on Foata normal form. 3/224 useless extension candidates. Maximal degree in co-relation 1008. Up to 63 conditions per place. [2021-10-21 20:15:45,642 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 40 selfloop transitions, 9 changer transitions 29/126 dead transitions. [2021-10-21 20:15:45,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 126 transitions, 1142 flow [2021-10-21 20:15:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:15:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 20:15:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1049 transitions. [2021-10-21 20:15:45,646 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6334541062801933 [2021-10-21 20:15:45,646 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1049 transitions. [2021-10-21 20:15:45,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1049 transitions. [2021-10-21 20:15:45,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:45,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1049 transitions. [2021-10-21 20:15:45,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.27777777777778) internal successors, (1049), 18 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:45,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:45,652 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:45,652 INFO L186 Difference]: Start difference. First operand has 200 places, 114 transitions, 862 flow. Second operand 18 states and 1049 transitions. [2021-10-21 20:15:45,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 126 transitions, 1142 flow [2021-10-21 20:15:45,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 126 transitions, 1010 flow, removed 26 selfloop flow, removed 21 redundant places. [2021-10-21 20:15:45,671 INFO L242 Difference]: Finished difference. Result has 185 places, 94 transitions, 552 flow [2021-10-21 20:15:45,671 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=552, PETRI_PLACES=185, PETRI_TRANSITIONS=94} [2021-10-21 20:15:45,672 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 103 predicate places. [2021-10-21 20:15:45,672 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 94 transitions, 552 flow [2021-10-21 20:15:45,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:45,672 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:45,673 INFO L254 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] [2021-10-21 20:15:45,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-21 20:15:45,673 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:45,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:45,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1243091695, now seen corresponding path program 14 times [2021-10-21 20:15:45,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:45,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408094105] [2021-10-21 20:15:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:45,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:45,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:45,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408094105] [2021-10-21 20:15:45,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408094105] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:45,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:45,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:45,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876209350] [2021-10-21 20:15:45,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:45,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:45,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:45,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:45,814 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:45,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 94 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:45,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:45,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:45,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:46,133 INFO L129 PetriNetUnfolder]: 31/205 cut-off events. [2021-10-21 20:15:46,133 INFO L130 PetriNetUnfolder]: For 921/922 co-relation queries the response was YES. [2021-10-21 20:15:46,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 205 events. 31/205 cut-off events. For 921/922 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 688 event pairs, 4 based on Foata normal form. 1/206 useless extension candidates. Maximal degree in co-relation 830. Up to 29 conditions per place. [2021-10-21 20:15:46,137 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 36 selfloop transitions, 21 changer transitions 25/130 dead transitions. [2021-10-21 20:15:46,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 130 transitions, 1118 flow [2021-10-21 20:15:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 20:15:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-21 20:15:46,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1228 transitions. [2021-10-21 20:15:46,140 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6356107660455487 [2021-10-21 20:15:46,141 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1228 transitions. [2021-10-21 20:15:46,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1228 transitions. [2021-10-21 20:15:46,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:46,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1228 transitions. [2021-10-21 20:15:46,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 58.476190476190474) internal successors, (1228), 21 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:46,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:46,148 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 92.0) internal successors, (2024), 22 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:46,149 INFO L186 Difference]: Start difference. First operand has 185 places, 94 transitions, 552 flow. Second operand 21 states and 1228 transitions. [2021-10-21 20:15:46,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 130 transitions, 1118 flow [2021-10-21 20:15:46,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 130 transitions, 900 flow, removed 33 selfloop flow, removed 24 redundant places. [2021-10-21 20:15:46,161 INFO L242 Difference]: Finished difference. Result has 166 places, 96 transitions, 552 flow [2021-10-21 20:15:46,161 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=552, PETRI_PLACES=166, PETRI_TRANSITIONS=96} [2021-10-21 20:15:46,161 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 84 predicate places. [2021-10-21 20:15:46,161 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 96 transitions, 552 flow [2021-10-21 20:15:46,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:46,163 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:46,163 INFO L254 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] [2021-10-21 20:15:46,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-21 20:15:46,165 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:46,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:46,165 INFO L82 PathProgramCache]: Analyzing trace with hash 864875245, now seen corresponding path program 15 times [2021-10-21 20:15:46,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:46,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561644043] [2021-10-21 20:15:46,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:46,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:46,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:46,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561644043] [2021-10-21 20:15:46,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561644043] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:46,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:46,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:46,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496760383] [2021-10-21 20:15:46,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:46,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:46,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:46,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:46,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:46,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 96 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:46,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:46,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:46,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:46,605 INFO L129 PetriNetUnfolder]: 26/204 cut-off events. [2021-10-21 20:15:46,606 INFO L130 PetriNetUnfolder]: For 780/781 co-relation queries the response was YES. [2021-10-21 20:15:46,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 204 events. 26/204 cut-off events. For 780/781 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 715 event pairs, 2 based on Foata normal form. 1/205 useless extension candidates. Maximal degree in co-relation 796. Up to 33 conditions per place. [2021-10-21 20:15:46,609 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 34 selfloop transitions, 22 changer transitions 21/125 dead transitions. [2021-10-21 20:15:46,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 125 transitions, 1024 flow [2021-10-21 20:15:46,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:15:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 20:15:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 942 transitions. [2021-10-21 20:15:46,613 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6399456521739131 [2021-10-21 20:15:46,613 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 942 transitions. [2021-10-21 20:15:46,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 942 transitions. [2021-10-21 20:15:46,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:46,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 942 transitions. [2021-10-21 20:15:46,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.875) internal successors, (942), 16 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:46,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:46,619 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:46,619 INFO L186 Difference]: Start difference. First operand has 166 places, 96 transitions, 552 flow. Second operand 16 states and 942 transitions. [2021-10-21 20:15:46,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 125 transitions, 1024 flow [2021-10-21 20:15:46,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 125 transitions, 877 flow, removed 47 selfloop flow, removed 17 redundant places. [2021-10-21 20:15:46,630 INFO L242 Difference]: Finished difference. Result has 160 places, 101 transitions, 600 flow [2021-10-21 20:15:46,631 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=600, PETRI_PLACES=160, PETRI_TRANSITIONS=101} [2021-10-21 20:15:46,631 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 78 predicate places. [2021-10-21 20:15:46,631 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 101 transitions, 600 flow [2021-10-21 20:15:46,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:46,632 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:46,632 INFO L254 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] [2021-10-21 20:15:46,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-21 20:15:46,633 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:46,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:46,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1157209939, now seen corresponding path program 16 times [2021-10-21 20:15:46,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:46,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212460437] [2021-10-21 20:15:46,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:46,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:46,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:46,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:46,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212460437] [2021-10-21 20:15:46,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212460437] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:46,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:46,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:46,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684660079] [2021-10-21 20:15:46,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:46,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:46,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:46,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:46,770 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:46,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 101 transitions, 600 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:46,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:46,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:46,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:47,063 INFO L129 PetriNetUnfolder]: 19/172 cut-off events. [2021-10-21 20:15:47,064 INFO L130 PetriNetUnfolder]: For 478/479 co-relation queries the response was YES. [2021-10-21 20:15:47,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 172 events. 19/172 cut-off events. For 478/479 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 490 event pairs, 2 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 635. Up to 27 conditions per place. [2021-10-21 20:15:47,066 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 31 selfloop transitions, 10 changer transitions 26/115 dead transitions. [2021-10-21 20:15:47,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 115 transitions, 857 flow [2021-10-21 20:15:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:15:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 20:15:47,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1049 transitions. [2021-10-21 20:15:47,069 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6334541062801933 [2021-10-21 20:15:47,069 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1049 transitions. [2021-10-21 20:15:47,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1049 transitions. [2021-10-21 20:15:47,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:47,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1049 transitions. [2021-10-21 20:15:47,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.27777777777778) internal successors, (1049), 18 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:47,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:47,075 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:47,075 INFO L186 Difference]: Start difference. First operand has 160 places, 101 transitions, 600 flow. Second operand 18 states and 1049 transitions. [2021-10-21 20:15:47,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 115 transitions, 857 flow [2021-10-21 20:15:47,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 115 transitions, 759 flow, removed 27 selfloop flow, removed 9 redundant places. [2021-10-21 20:15:47,084 INFO L242 Difference]: Finished difference. Result has 168 places, 86 transitions, 406 flow [2021-10-21 20:15:47,084 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=406, PETRI_PLACES=168, PETRI_TRANSITIONS=86} [2021-10-21 20:15:47,084 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 86 predicate places. [2021-10-21 20:15:47,084 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 86 transitions, 406 flow [2021-10-21 20:15:47,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:47,085 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:47,085 INFO L254 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] [2021-10-21 20:15:47,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-21 20:15:47,085 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:47,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:47,086 INFO L82 PathProgramCache]: Analyzing trace with hash 2082622499, now seen corresponding path program 17 times [2021-10-21 20:15:47,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:47,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883664646] [2021-10-21 20:15:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:47,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:47,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:47,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883664646] [2021-10-21 20:15:47,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883664646] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:47,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:47,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:47,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452151540] [2021-10-21 20:15:47,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:47,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:47,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:47,228 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:47,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 86 transitions, 406 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:47,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:47,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:47,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:47,512 INFO L129 PetriNetUnfolder]: 22/172 cut-off events. [2021-10-21 20:15:47,512 INFO L130 PetriNetUnfolder]: For 537/538 co-relation queries the response was YES. [2021-10-21 20:15:47,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 172 events. 22/172 cut-off events. For 537/538 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 490 event pairs, 2 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 644. Up to 27 conditions per place. [2021-10-21 20:15:47,515 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 29 selfloop transitions, 20 changer transitions 19/116 dead transitions. [2021-10-21 20:15:47,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 116 transitions, 858 flow [2021-10-21 20:15:47,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:15:47,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 20:15:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1054 transitions. [2021-10-21 20:15:47,517 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6364734299516909 [2021-10-21 20:15:47,518 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1054 transitions. [2021-10-21 20:15:47,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1054 transitions. [2021-10-21 20:15:47,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:47,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1054 transitions. [2021-10-21 20:15:47,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.55555555555556) internal successors, (1054), 18 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:47,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:47,540 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:47,540 INFO L186 Difference]: Start difference. First operand has 168 places, 86 transitions, 406 flow. Second operand 18 states and 1054 transitions. [2021-10-21 20:15:47,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 116 transitions, 858 flow [2021-10-21 20:15:47,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 116 transitions, 712 flow, removed 25 selfloop flow, removed 18 redundant places. [2021-10-21 20:15:47,572 INFO L242 Difference]: Finished difference. Result has 153 places, 95 transitions, 517 flow [2021-10-21 20:15:47,573 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=517, PETRI_PLACES=153, PETRI_TRANSITIONS=95} [2021-10-21 20:15:47,573 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 71 predicate places. [2021-10-21 20:15:47,573 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 95 transitions, 517 flow [2021-10-21 20:15:47,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:47,574 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:47,574 INFO L254 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] [2021-10-21 20:15:47,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-21 20:15:47,574 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:47,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:47,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1324750551, now seen corresponding path program 18 times [2021-10-21 20:15:47,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:47,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377959745] [2021-10-21 20:15:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:47,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:47,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:47,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377959745] [2021-10-21 20:15:47,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377959745] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:47,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:47,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:47,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868110072] [2021-10-21 20:15:47,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:47,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:47,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:47,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:47,742 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:47,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 95 transitions, 517 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:47,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:47,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:47,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:48,013 INFO L129 PetriNetUnfolder]: 19/181 cut-off events. [2021-10-21 20:15:48,013 INFO L130 PetriNetUnfolder]: For 374/375 co-relation queries the response was YES. [2021-10-21 20:15:48,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 181 events. 19/181 cut-off events. For 374/375 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 555 event pairs, 0 based on Foata normal form. 1/182 useless extension candidates. Maximal degree in co-relation 619. Up to 27 conditions per place. [2021-10-21 20:15:48,016 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 30 selfloop transitions, 22 changer transitions 20/120 dead transitions. [2021-10-21 20:15:48,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 120 transitions, 905 flow [2021-10-21 20:15:48,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:15:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-21 20:15:48,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 998 transitions. [2021-10-21 20:15:48,019 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6381074168797954 [2021-10-21 20:15:48,019 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 998 transitions. [2021-10-21 20:15:48,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 998 transitions. [2021-10-21 20:15:48,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:48,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 998 transitions. [2021-10-21 20:15:48,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 58.705882352941174) internal successors, (998), 17 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,024 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,024 INFO L186 Difference]: Start difference. First operand has 153 places, 95 transitions, 517 flow. Second operand 17 states and 998 transitions. [2021-10-21 20:15:48,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 120 transitions, 905 flow [2021-10-21 20:15:48,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 120 transitions, 826 flow, removed 35 selfloop flow, removed 5 redundant places. [2021-10-21 20:15:48,032 INFO L242 Difference]: Finished difference. Result has 165 places, 99 transitions, 599 flow [2021-10-21 20:15:48,033 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=599, PETRI_PLACES=165, PETRI_TRANSITIONS=99} [2021-10-21 20:15:48,033 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 83 predicate places. [2021-10-21 20:15:48,033 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 99 transitions, 599 flow [2021-10-21 20:15:48,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,034 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:48,034 INFO L254 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] [2021-10-21 20:15:48,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-21 20:15:48,034 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:48,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:48,035 INFO L82 PathProgramCache]: Analyzing trace with hash -720882079, now seen corresponding path program 19 times [2021-10-21 20:15:48,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:48,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270617584] [2021-10-21 20:15:48,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:48,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:48,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:48,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270617584] [2021-10-21 20:15:48,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270617584] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:48,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:48,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:48,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445300317] [2021-10-21 20:15:48,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:48,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:48,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:48,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:48,169 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:48,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 99 transitions, 599 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:48,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:48,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:48,444 INFO L129 PetriNetUnfolder]: 15/168 cut-off events. [2021-10-21 20:15:48,444 INFO L130 PetriNetUnfolder]: For 366/367 co-relation queries the response was YES. [2021-10-21 20:15:48,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 168 events. 15/168 cut-off events. For 366/367 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 474 event pairs, 0 based on Foata normal form. 1/169 useless extension candidates. Maximal degree in co-relation 594. Up to 27 conditions per place. [2021-10-21 20:15:48,447 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 29 selfloop transitions, 13 changer transitions 25/115 dead transitions. [2021-10-21 20:15:48,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 115 transitions, 883 flow [2021-10-21 20:15:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:15:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 20:15:48,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1051 transitions. [2021-10-21 20:15:48,450 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6346618357487923 [2021-10-21 20:15:48,450 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1051 transitions. [2021-10-21 20:15:48,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1051 transitions. [2021-10-21 20:15:48,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:48,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1051 transitions. [2021-10-21 20:15:48,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.388888888888886) internal successors, (1051), 18 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,456 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 92.0) internal successors, (1748), 19 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,457 INFO L186 Difference]: Start difference. First operand has 165 places, 99 transitions, 599 flow. Second operand 18 states and 1051 transitions. [2021-10-21 20:15:48,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 115 transitions, 883 flow [2021-10-21 20:15:48,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 115 transitions, 788 flow, removed 27 selfloop flow, removed 9 redundant places. [2021-10-21 20:15:48,466 INFO L242 Difference]: Finished difference. Result has 173 places, 90 transitions, 471 flow [2021-10-21 20:15:48,467 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=471, PETRI_PLACES=173, PETRI_TRANSITIONS=90} [2021-10-21 20:15:48,467 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 91 predicate places. [2021-10-21 20:15:48,467 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 90 transitions, 471 flow [2021-10-21 20:15:48,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,468 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:15:48,468 INFO L254 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] [2021-10-21 20:15:48,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-10-21 20:15:48,468 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-21 20:15:48,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:15:48,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1087779575, now seen corresponding path program 20 times [2021-10-21 20:15:48,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:15:48,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252835004] [2021-10-21 20:15:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:15:48,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:15:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:15:48,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:15:48,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:15:48,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252835004] [2021-10-21 20:15:48,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252835004] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:15:48,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:15:48,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:15:48,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615405421] [2021-10-21 20:15:48,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:15:48,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:15:48,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:15:48,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:15:48,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 92 [2021-10-21 20:15:48,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 90 transitions, 471 flow. Second operand has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:15:48,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 92 [2021-10-21 20:15:48,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:15:48,841 INFO L129 PetriNetUnfolder]: 9/112 cut-off events. [2021-10-21 20:15:48,841 INFO L130 PetriNetUnfolder]: For 223/224 co-relation queries the response was YES. [2021-10-21 20:15:48,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 112 events. 9/112 cut-off events. For 223/224 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 219 event pairs, 0 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 369. Up to 12 conditions per place. [2021-10-21 20:15:48,843 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 0 selfloop transitions, 0 changer transitions 84/84 dead transitions. [2021-10-21 20:15:48,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 84 transitions, 570 flow [2021-10-21 20:15:48,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:15:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-21 20:15:48,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 972 transitions. [2021-10-21 20:15:48,845 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6214833759590793 [2021-10-21 20:15:48,845 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 972 transitions. [2021-10-21 20:15:48,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 972 transitions. [2021-10-21 20:15:48,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:15:48,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 972 transitions. [2021-10-21 20:15:48,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 57.1764705882353) internal successors, (972), 17 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,850 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,850 INFO L186 Difference]: Start difference. First operand has 173 places, 90 transitions, 471 flow. Second operand 17 states and 972 transitions. [2021-10-21 20:15:48,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 84 transitions, 570 flow [2021-10-21 20:15:48,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 84 transitions, 476 flow, removed 22 selfloop flow, removed 20 redundant places. [2021-10-21 20:15:48,855 INFO L242 Difference]: Finished difference. Result has 142 places, 0 transitions, 0 flow [2021-10-21 20:15:48,856 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=0, PETRI_PLACES=142, PETRI_TRANSITIONS=0} [2021-10-21 20:15:48,856 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 60 predicate places. [2021-10-21 20:15:48,856 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 0 transitions, 0 flow [2021-10-21 20:15:48,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:15:48,860 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:15:48,860 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 20:15:48,861 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 20:15:48,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-21 20:15:48,869 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 20:15:48,869 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:15:48,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:15:48 BasicIcfg [2021-10-21 20:15:48,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:15:48,873 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:15:48,873 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:15:48,873 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:15:48,873 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:15:22" (3/4) ... [2021-10-21 20:15:48,876 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:15:48,883 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-21 20:15:48,884 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-21 20:15:48,892 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-21 20:15:48,892 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:15:48,892 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:15:48,892 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:15:48,951 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:15:48,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:15:48,953 INFO L168 Benchmark]: Toolchain (without parser) took 27498.86 ms. Allocated memory was 117.4 MB in the beginning and 272.6 MB in the end (delta: 155.2 MB). Free memory was 84.9 MB in the beginning and 232.5 MB in the end (delta: -147.5 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:48,954 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory is still 44.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:15:48,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.04 ms. Allocated memory is still 117.4 MB. Free memory was 84.9 MB in the beginning and 93.1 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:48,956 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.52 ms. Allocated memory is still 117.4 MB. Free memory was 93.1 MB in the beginning and 91.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:15:48,956 INFO L168 Benchmark]: Boogie Preprocessor took 48.66 ms. Allocated memory is still 117.4 MB. Free memory was 91.6 MB in the beginning and 90.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:48,957 INFO L168 Benchmark]: RCFGBuilder took 442.84 ms. Allocated memory is still 117.4 MB. Free memory was 90.4 MB in the beginning and 78.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:48,957 INFO L168 Benchmark]: TraceAbstraction took 26459.74 ms. Allocated memory was 117.4 MB in the beginning and 272.6 MB in the end (delta: 155.2 MB). Free memory was 78.2 MB in the beginning and 235.6 MB in the end (delta: -157.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:15:48,957 INFO L168 Benchmark]: Witness Printer took 78.67 ms. Allocated memory is still 272.6 MB. Free memory was 235.6 MB in the beginning and 232.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:15:48,960 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory is still 44.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 395.04 ms. Allocated memory is still 117.4 MB. Free memory was 84.9 MB in the beginning and 93.1 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.52 ms. Allocated memory is still 117.4 MB. Free memory was 93.1 MB in the beginning and 91.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.66 ms. Allocated memory is still 117.4 MB. Free memory was 91.6 MB in the beginning and 90.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 442.84 ms. Allocated memory is still 117.4 MB. Free memory was 90.4 MB in the beginning and 78.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26459.74 ms. Allocated memory was 117.4 MB in the beginning and 272.6 MB in the end (delta: 155.2 MB). Free memory was 78.2 MB in the beginning and 235.6 MB in the end (delta: -157.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 78.67 ms. Allocated memory is still 272.6 MB. Free memory was 235.6 MB in the beginning and 232.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 33.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26267.1ms, OverallIterations: 47, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 18714.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 88.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1806 SDtfs, 1738 SDslu, 7675 SDs, 0 SdLazy, 5672 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3261.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1021 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 878 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3636 ImplicationChecksByTransitivity, 9119.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1483occurred in iteration=20, InterpolantAutomatonStates: 803, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 115.3ms SsaConstructionTime, 792.5ms SatisfiabilityAnalysisTime, 5887.5ms InterpolantComputationTime, 3188 NumberOfCodeBlocks, 3188 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3141 ConstructedInterpolants, 0 QuantifiedInterpolants, 11811 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 20:15:49,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e564899d-e818-4829-95f0-70507d52fc91/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...