./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:55:59,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:55:59,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:55:59,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:55:59,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:55:59,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:55:59,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:55:59,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:55:59,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:55:59,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:55:59,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:55:59,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:55:59,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:55:59,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:55:59,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:55:59,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:55:59,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:55:59,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:55:59,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:55:59,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:55:59,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:55:59,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:55:59,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:55:59,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:55:59,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:55:59,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:55:59,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:55:59,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:55:59,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:55:59,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:55:59,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:55:59,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:55:59,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:55:59,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:55:59,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:55:59,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:55:59,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:55:59,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:55:59,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:55:59,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:55:59,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:55:59,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:55:59,990 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:55:59,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:55:59,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:55:59,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:55:59,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:55:59,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:55:59,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:55:59,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:55:59,993 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:55:59,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:55:59,995 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:55:59,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:55:59,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:55:59,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:55:59,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:55:59,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:55:59,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:55:59,996 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:55:59,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:55:59,996 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:55:59,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:55:59,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:55:59,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:55:59,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:55:59,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:55:59,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:55:59,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:55:59,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:55:59,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:55:59,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:55:59,999 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:55:59,999 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:56:00,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:56:00,001 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_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 [2022-11-20 10:56:00,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:56:00,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:56:00,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:56:00,328 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:56:00,329 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:56:00,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-11-20 10:56:03,400 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:56:03,623 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:56:03,624 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-11-20 10:56:03,631 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN/data/22ea58b04/0aeb852066364edc92377e95f9960b96/FLAG372ab6628 [2022-11-20 10:56:03,646 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN/data/22ea58b04/0aeb852066364edc92377e95f9960b96 [2022-11-20 10:56:03,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:56:03,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:56:03,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:56:03,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:56:03,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:56:03,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:56:03" (1/1) ... [2022-11-20 10:56:03,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b1ca78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03, skipping insertion in model container [2022-11-20 10:56:03,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:56:03" (1/1) ... [2022-11-20 10:56:03,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:56:03,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:56:03,890 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-11-20 10:56:03,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:56:03,908 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:56:03,940 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-11-20 10:56:03,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:56:03,963 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:56:03,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03 WrapperNode [2022-11-20 10:56:03,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:56:03,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:56:03,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:56:03,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:56:03,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03" (1/1) ... [2022-11-20 10:56:03,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03" (1/1) ... [2022-11-20 10:56:04,007 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 167 [2022-11-20 10:56:04,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:56:04,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:56:04,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:56:04,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:56:04,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03" (1/1) ... [2022-11-20 10:56:04,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03" (1/1) ... [2022-11-20 10:56:04,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03" (1/1) ... [2022-11-20 10:56:04,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03" (1/1) ... [2022-11-20 10:56:04,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03" (1/1) ... [2022-11-20 10:56:04,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03" (1/1) ... [2022-11-20 10:56:04,045 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03" (1/1) ... [2022-11-20 10:56:04,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03" (1/1) ... [2022-11-20 10:56:04,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:56:04,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:56:04,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:56:04,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:56:04,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03" (1/1) ... [2022-11-20 10:56:04,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:56:04,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:04,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:56:04,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e040a461-7890-4808-9d82-4fd6f8c23449/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:56:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:56:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:56:04,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:56:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:56:04,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:56:04,137 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:56:04,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:56:04,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:56:04,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:56:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:56:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:56:04,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:56:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:56:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:56:04,140 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:56:04,267 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:56:04,270 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:56:04,685 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:56:04,712 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:56:04,712 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:56:04,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:04 BoogieIcfgContainer [2022-11-20 10:56:04,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:56:04,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:56:04,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:56:04,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:56:04,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:56:03" (1/3) ... [2022-11-20 10:56:04,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c8ada3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:56:04, skipping insertion in model container [2022-11-20 10:56:04,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:03" (2/3) ... [2022-11-20 10:56:04,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c8ada3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:56:04, skipping insertion in model container [2022-11-20 10:56:04,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:04" (3/3) ... [2022-11-20 10:56:04,738 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2022-11-20 10:56:04,748 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:56:04,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:56:04,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:56:04,768 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:56:04,988 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:56:05,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 220 transitions, 464 flow [2022-11-20 10:56:05,239 INFO L130 PetriNetUnfolder]: 14/217 cut-off events. [2022-11-20 10:56:05,239 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:56:05,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 217 events. 14/217 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 429 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2022-11-20 10:56:05,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 220 transitions, 464 flow [2022-11-20 10:56:05,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 206 transitions, 430 flow [2022-11-20 10:56:05,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:56:05,288 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@663127fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:56:05,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 10:56:05,410 INFO L130 PetriNetUnfolder]: 14/205 cut-off events. [2022-11-20 10:56:05,414 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:56:05,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:05,415 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:05,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:05,422 INFO L85 PathProgramCache]: Analyzing trace with hash -678266341, now seen corresponding path program 1 times [2022-11-20 10:56:05,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:05,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779412524] [2022-11-20 10:56:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:05,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:07,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:07,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779412524] [2022-11-20 10:56:07,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779412524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:07,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:07,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:56:07,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038183401] [2022-11-20 10:56:07,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:07,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:56:07,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:07,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:56:07,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:56:07,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:07,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 206 transitions, 430 flow. Second operand has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:07,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:07,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:07,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:08,471 INFO L130 PetriNetUnfolder]: 199/1071 cut-off events. [2022-11-20 10:56:08,472 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2022-11-20 10:56:08,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 1071 events. 199/1071 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7740 event pairs, 100 based on Foata normal form. 128/1104 useless extension candidates. Maximal degree in co-relation 1265. Up to 207 conditions per place. [2022-11-20 10:56:08,495 INFO L137 encePairwiseOnDemand]: 201/220 looper letters, 61 selfloop transitions, 12 changer transitions 23/262 dead transitions. [2022-11-20 10:56:08,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 262 transitions, 788 flow [2022-11-20 10:56:08,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:56:08,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 10:56:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2997 transitions. [2022-11-20 10:56:08,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8514204545454546 [2022-11-20 10:56:08,524 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2997 transitions. [2022-11-20 10:56:08,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2997 transitions. [2022-11-20 10:56:08,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:08,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2997 transitions. [2022-11-20 10:56:08,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 187.3125) internal successors, (2997), 16 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:08,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:08,561 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:08,563 INFO L175 Difference]: Start difference. First operand has 202 places, 206 transitions, 430 flow. Second operand 16 states and 2997 transitions. [2022-11-20 10:56:08,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 262 transitions, 788 flow [2022-11-20 10:56:08,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 262 transitions, 740 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 10:56:08,576 INFO L231 Difference]: Finished difference. Result has 221 places, 207 transitions, 487 flow [2022-11-20 10:56:08,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=487, PETRI_PLACES=221, PETRI_TRANSITIONS=207} [2022-11-20 10:56:08,582 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 19 predicate places. [2022-11-20 10:56:08,583 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 207 transitions, 487 flow [2022-11-20 10:56:08,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:08,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:08,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:08,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:56:08,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:08,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:08,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1501314021, now seen corresponding path program 2 times [2022-11-20 10:56:08,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:08,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280720231] [2022-11-20 10:56:08,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:08,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:09,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:09,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280720231] [2022-11-20 10:56:09,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280720231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:09,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:09,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:56:09,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116043273] [2022-11-20 10:56:09,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:09,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:56:09,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:09,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:56:09,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:56:09,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:09,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 207 transitions, 487 flow. Second operand has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:09,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:09,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:09,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:10,369 INFO L130 PetriNetUnfolder]: 218/1122 cut-off events. [2022-11-20 10:56:10,370 INFO L131 PetriNetUnfolder]: For 336/336 co-relation queries the response was YES. [2022-11-20 10:56:10,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1855 conditions, 1122 events. 218/1122 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8253 event pairs, 120 based on Foata normal form. 1/1031 useless extension candidates. Maximal degree in co-relation 1832. Up to 289 conditions per place. [2022-11-20 10:56:10,389 INFO L137 encePairwiseOnDemand]: 211/220 looper letters, 45 selfloop transitions, 19 changer transitions 12/242 dead transitions. [2022-11-20 10:56:10,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 242 transitions, 783 flow [2022-11-20 10:56:10,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:56:10,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:56:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2037 transitions. [2022-11-20 10:56:10,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8417355371900826 [2022-11-20 10:56:10,395 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2037 transitions. [2022-11-20 10:56:10,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2037 transitions. [2022-11-20 10:56:10,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:10,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2037 transitions. [2022-11-20 10:56:10,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.1818181818182) internal successors, (2037), 11 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:10,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 220.0) internal successors, (2640), 12 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:10,410 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 220.0) internal successors, (2640), 12 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:10,411 INFO L175 Difference]: Start difference. First operand has 221 places, 207 transitions, 487 flow. Second operand 11 states and 2037 transitions. [2022-11-20 10:56:10,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 242 transitions, 783 flow [2022-11-20 10:56:10,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 242 transitions, 777 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:10,430 INFO L231 Difference]: Finished difference. Result has 230 places, 218 transitions, 632 flow [2022-11-20 10:56:10,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=632, PETRI_PLACES=230, PETRI_TRANSITIONS=218} [2022-11-20 10:56:10,431 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 28 predicate places. [2022-11-20 10:56:10,431 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 218 transitions, 632 flow [2022-11-20 10:56:10,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:10,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:10,433 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:10,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:56:10,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:10,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:10,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1176809823, now seen corresponding path program 3 times [2022-11-20 10:56:10,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:10,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283876990] [2022-11-20 10:56:10,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:10,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:11,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:11,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283876990] [2022-11-20 10:56:11,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283876990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:11,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:11,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:56:11,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161428820] [2022-11-20 10:56:11,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:11,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:56:11,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:11,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:56:11,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:56:11,286 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:11,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 218 transitions, 632 flow. Second operand has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:11,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:11,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:11,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:11,973 INFO L130 PetriNetUnfolder]: 284/1344 cut-off events. [2022-11-20 10:56:11,973 INFO L131 PetriNetUnfolder]: For 1173/1173 co-relation queries the response was YES. [2022-11-20 10:56:11,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2678 conditions, 1344 events. 284/1344 cut-off events. For 1173/1173 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10477 event pairs, 152 based on Foata normal form. 1/1245 useless extension candidates. Maximal degree in co-relation 2648. Up to 367 conditions per place. [2022-11-20 10:56:11,994 INFO L137 encePairwiseOnDemand]: 211/220 looper letters, 59 selfloop transitions, 20 changer transitions 13/258 dead transitions. [2022-11-20 10:56:11,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 258 transitions, 1033 flow [2022-11-20 10:56:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:56:12,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:56:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2039 transitions. [2022-11-20 10:56:12,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8425619834710744 [2022-11-20 10:56:12,068 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2039 transitions. [2022-11-20 10:56:12,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2039 transitions. [2022-11-20 10:56:12,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:12,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2039 transitions. [2022-11-20 10:56:12,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.36363636363637) internal successors, (2039), 11 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:12,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 220.0) internal successors, (2640), 12 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:12,081 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 220.0) internal successors, (2640), 12 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:12,082 INFO L175 Difference]: Start difference. First operand has 230 places, 218 transitions, 632 flow. Second operand 11 states and 2039 transitions. [2022-11-20 10:56:12,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 258 transitions, 1033 flow [2022-11-20 10:56:12,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 258 transitions, 995 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:12,100 INFO L231 Difference]: Finished difference. Result has 243 places, 230 transitions, 798 flow [2022-11-20 10:56:12,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=798, PETRI_PLACES=243, PETRI_TRANSITIONS=230} [2022-11-20 10:56:12,101 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 41 predicate places. [2022-11-20 10:56:12,101 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 230 transitions, 798 flow [2022-11-20 10:56:12,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:12,102 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:12,103 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:12,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:56:12,103 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:12,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:12,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1644800397, now seen corresponding path program 4 times [2022-11-20 10:56:12,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:12,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693295345] [2022-11-20 10:56:12,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:12,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:12,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:12,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693295345] [2022-11-20 10:56:12,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693295345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:12,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:12,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:56:12,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143924760] [2022-11-20 10:56:12,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:12,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:56:12,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:12,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:56:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:56:12,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:12,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 230 transitions, 798 flow. Second operand has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:12,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:12,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:12,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:14,105 INFO L130 PetriNetUnfolder]: 299/1575 cut-off events. [2022-11-20 10:56:14,105 INFO L131 PetriNetUnfolder]: For 2119/2119 co-relation queries the response was YES. [2022-11-20 10:56:14,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1575 events. 299/1575 cut-off events. For 2119/2119 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13333 event pairs, 156 based on Foata normal form. 1/1479 useless extension candidates. Maximal degree in co-relation 3272. Up to 304 conditions per place. [2022-11-20 10:56:14,126 INFO L137 encePairwiseOnDemand]: 211/220 looper letters, 80 selfloop transitions, 29 changer transitions 16/291 dead transitions. [2022-11-20 10:56:14,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 291 transitions, 1367 flow [2022-11-20 10:56:14,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:56:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 10:56:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2416 transitions. [2022-11-20 10:56:14,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8447552447552448 [2022-11-20 10:56:14,132 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2416 transitions. [2022-11-20 10:56:14,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2416 transitions. [2022-11-20 10:56:14,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:14,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2416 transitions. [2022-11-20 10:56:14,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 185.84615384615384) internal successors, (2416), 13 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:14,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 220.0) internal successors, (3080), 14 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:14,152 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 220.0) internal successors, (3080), 14 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:14,152 INFO L175 Difference]: Start difference. First operand has 243 places, 230 transitions, 798 flow. Second operand 13 states and 2416 transitions. [2022-11-20 10:56:14,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 291 transitions, 1367 flow [2022-11-20 10:56:14,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 291 transitions, 1265 flow, removed 51 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:14,174 INFO L231 Difference]: Finished difference. Result has 261 places, 240 transitions, 955 flow [2022-11-20 10:56:14,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=955, PETRI_PLACES=261, PETRI_TRANSITIONS=240} [2022-11-20 10:56:14,176 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 59 predicate places. [2022-11-20 10:56:14,178 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 240 transitions, 955 flow [2022-11-20 10:56:14,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:14,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:14,179 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:14,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:56:14,180 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:14,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:14,180 INFO L85 PathProgramCache]: Analyzing trace with hash 20426809, now seen corresponding path program 5 times [2022-11-20 10:56:14,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:14,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945178947] [2022-11-20 10:56:14,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:14,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:15,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:15,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945178947] [2022-11-20 10:56:15,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945178947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:15,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:15,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:56:15,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997433165] [2022-11-20 10:56:15,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:15,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:56:15,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:15,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:56:15,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:56:15,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:15,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 240 transitions, 955 flow. Second operand has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:15,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:15,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:15,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:15,848 INFO L130 PetriNetUnfolder]: 301/1653 cut-off events. [2022-11-20 10:56:15,848 INFO L131 PetriNetUnfolder]: For 2691/2693 co-relation queries the response was YES. [2022-11-20 10:56:15,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 1653 events. 301/1653 cut-off events. For 2691/2693 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14402 event pairs, 196 based on Foata normal form. 1/1539 useless extension candidates. Maximal degree in co-relation 3465. Up to 440 conditions per place. [2022-11-20 10:56:15,874 INFO L137 encePairwiseOnDemand]: 211/220 looper letters, 59 selfloop transitions, 29 changer transitions 18/272 dead transitions. [2022-11-20 10:56:15,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 272 transitions, 1353 flow [2022-11-20 10:56:15,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:56:15,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 10:56:15,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2220 transitions. [2022-11-20 10:56:15,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8409090909090909 [2022-11-20 10:56:15,881 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2220 transitions. [2022-11-20 10:56:15,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2220 transitions. [2022-11-20 10:56:15,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:15,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2220 transitions. [2022-11-20 10:56:15,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:15,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 220.0) internal successors, (2860), 13 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:15,898 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 220.0) internal successors, (2860), 13 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:15,898 INFO L175 Difference]: Start difference. First operand has 261 places, 240 transitions, 955 flow. Second operand 12 states and 2220 transitions. [2022-11-20 10:56:15,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 272 transitions, 1353 flow [2022-11-20 10:56:15,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 272 transitions, 1323 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:15,927 INFO L231 Difference]: Finished difference. Result has 273 places, 246 transitions, 1108 flow [2022-11-20 10:56:15,927 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1108, PETRI_PLACES=273, PETRI_TRANSITIONS=246} [2022-11-20 10:56:15,930 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 71 predicate places. [2022-11-20 10:56:15,930 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 246 transitions, 1108 flow [2022-11-20 10:56:15,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:15,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:15,932 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:15,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:56:15,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:15,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash 793011999, now seen corresponding path program 6 times [2022-11-20 10:56:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:15,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248742016] [2022-11-20 10:56:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:15,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:16,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:16,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248742016] [2022-11-20 10:56:16,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248742016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:16,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:16,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:56:16,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772958049] [2022-11-20 10:56:16,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:16,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:56:16,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:16,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:56:16,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:56:16,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:16,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 246 transitions, 1108 flow. Second operand has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:16,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:16,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:16,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:17,480 INFO L130 PetriNetUnfolder]: 299/1590 cut-off events. [2022-11-20 10:56:17,480 INFO L131 PetriNetUnfolder]: For 2810/2810 co-relation queries the response was YES. [2022-11-20 10:56:17,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3563 conditions, 1590 events. 299/1590 cut-off events. For 2810/2810 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13647 event pairs, 181 based on Foata normal form. 1/1489 useless extension candidates. Maximal degree in co-relation 3509. Up to 427 conditions per place. [2022-11-20 10:56:17,508 INFO L137 encePairwiseOnDemand]: 211/220 looper letters, 61 selfloop transitions, 32 changer transitions 17/276 dead transitions. [2022-11-20 10:56:17,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 276 transitions, 1496 flow [2022-11-20 10:56:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:56:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 10:56:17,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2219 transitions. [2022-11-20 10:56:17,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8405303030303031 [2022-11-20 10:56:17,514 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2219 transitions. [2022-11-20 10:56:17,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2219 transitions. [2022-11-20 10:56:17,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:17,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2219 transitions. [2022-11-20 10:56:17,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 184.91666666666666) internal successors, (2219), 12 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:17,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 220.0) internal successors, (2860), 13 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:17,527 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 220.0) internal successors, (2860), 13 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:17,527 INFO L175 Difference]: Start difference. First operand has 273 places, 246 transitions, 1108 flow. Second operand 12 states and 2219 transitions. [2022-11-20 10:56:17,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 276 transitions, 1496 flow [2022-11-20 10:56:17,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 276 transitions, 1436 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-11-20 10:56:17,557 INFO L231 Difference]: Finished difference. Result has 284 places, 252 transitions, 1240 flow [2022-11-20 10:56:17,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1240, PETRI_PLACES=284, PETRI_TRANSITIONS=252} [2022-11-20 10:56:17,558 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 82 predicate places. [2022-11-20 10:56:17,559 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 252 transitions, 1240 flow [2022-11-20 10:56:17,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:17,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:17,560 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:17,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:56:17,561 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:17,561 INFO L85 PathProgramCache]: Analyzing trace with hash -458231154, now seen corresponding path program 1 times [2022-11-20 10:56:17,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:17,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994437455] [2022-11-20 10:56:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:17,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:17,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:17,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994437455] [2022-11-20 10:56:17,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994437455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:17,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:17,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:56:17,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381426190] [2022-11-20 10:56:17,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:17,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:56:17,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:17,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:56:17,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:56:17,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 220 [2022-11-20 10:56:17,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 252 transitions, 1240 flow. Second operand has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:17,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:17,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 220 [2022-11-20 10:56:17,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:18,441 INFO L130 PetriNetUnfolder]: 198/2684 cut-off events. [2022-11-20 10:56:18,442 INFO L131 PetriNetUnfolder]: For 5851/6074 co-relation queries the response was YES. [2022-11-20 10:56:18,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6102 conditions, 2684 events. 198/2684 cut-off events. For 5851/6074 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 28025 event pairs, 36 based on Foata normal form. 8/2538 useless extension candidates. Maximal degree in co-relation 6024. Up to 141 conditions per place. [2022-11-20 10:56:18,494 INFO L137 encePairwiseOnDemand]: 206/220 looper letters, 54 selfloop transitions, 18 changer transitions 4/303 dead transitions. [2022-11-20 10:56:18,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 303 transitions, 1541 flow [2022-11-20 10:56:18,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:56:18,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:56:18,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1733 transitions. [2022-11-20 10:56:18,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8752525252525253 [2022-11-20 10:56:18,501 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1733 transitions. [2022-11-20 10:56:18,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1733 transitions. [2022-11-20 10:56:18,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:18,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1733 transitions. [2022-11-20 10:56:18,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.55555555555554) internal successors, (1733), 9 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:18,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 220.0) internal successors, (2200), 10 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:18,511 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 220.0) internal successors, (2200), 10 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:18,511 INFO L175 Difference]: Start difference. First operand has 284 places, 252 transitions, 1240 flow. Second operand 9 states and 1733 transitions. [2022-11-20 10:56:18,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 303 transitions, 1541 flow [2022-11-20 10:56:18,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 303 transitions, 1471 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-11-20 10:56:18,652 INFO L231 Difference]: Finished difference. Result has 292 places, 268 transitions, 1299 flow [2022-11-20 10:56:18,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1299, PETRI_PLACES=292, PETRI_TRANSITIONS=268} [2022-11-20 10:56:18,653 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 90 predicate places. [2022-11-20 10:56:18,653 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 268 transitions, 1299 flow [2022-11-20 10:56:18,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:18,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:18,654 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:18,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:56:18,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1321258548, now seen corresponding path program 1 times [2022-11-20 10:56:18,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:18,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914484477] [2022-11-20 10:56:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:18,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:18,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:18,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914484477] [2022-11-20 10:56:18,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914484477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:18,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:18,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:18,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228330025] [2022-11-20 10:56:18,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:18,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:56:18,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:18,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:56:18,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:18,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 220 [2022-11-20 10:56:18,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 268 transitions, 1299 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:18,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:18,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 220 [2022-11-20 10:56:18,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:19,379 INFO L130 PetriNetUnfolder]: 240/2935 cut-off events. [2022-11-20 10:56:19,380 INFO L131 PetriNetUnfolder]: For 5817/5964 co-relation queries the response was YES. [2022-11-20 10:56:19,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 2935 events. 240/2935 cut-off events. For 5817/5964 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 31797 event pairs, 38 based on Foata normal form. 0/2796 useless extension candidates. Maximal degree in co-relation 6940. Up to 188 conditions per place. [2022-11-20 10:56:19,416 INFO L137 encePairwiseOnDemand]: 214/220 looper letters, 15 selfloop transitions, 4 changer transitions 0/275 dead transitions. [2022-11-20 10:56:19,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 275 transitions, 1356 flow [2022-11-20 10:56:19,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:56:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2022-11-20 10:56:19,419 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9363636363636364 [2022-11-20 10:56:19,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2022-11-20 10:56:19,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2022-11-20 10:56:19,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:19,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2022-11-20 10:56:19,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:19,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:19,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:19,423 INFO L175 Difference]: Start difference. First operand has 292 places, 268 transitions, 1299 flow. Second operand 3 states and 618 transitions. [2022-11-20 10:56:19,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 275 transitions, 1356 flow [2022-11-20 10:56:19,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 275 transitions, 1352 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:19,476 INFO L231 Difference]: Finished difference. Result has 292 places, 270 transitions, 1323 flow [2022-11-20 10:56:19,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1323, PETRI_PLACES=292, PETRI_TRANSITIONS=270} [2022-11-20 10:56:19,479 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 90 predicate places. [2022-11-20 10:56:19,480 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 270 transitions, 1323 flow [2022-11-20 10:56:19,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:19,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:19,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:19,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:56:19,481 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:19,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:19,482 INFO L85 PathProgramCache]: Analyzing trace with hash -708455474, now seen corresponding path program 2 times [2022-11-20 10:56:19,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:19,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408717897] [2022-11-20 10:56:19,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:19,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:19,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:19,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408717897] [2022-11-20 10:56:19,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408717897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:19,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:19,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:19,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610729422] [2022-11-20 10:56:19,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:19,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:56:19,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:19,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:56:19,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:19,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 220 [2022-11-20 10:56:19,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 270 transitions, 1323 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:19,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:19,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 220 [2022-11-20 10:56:19,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:19,957 INFO L130 PetriNetUnfolder]: 158/2149 cut-off events. [2022-11-20 10:56:19,957 INFO L131 PetriNetUnfolder]: For 3668/3727 co-relation queries the response was YES. [2022-11-20 10:56:19,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5064 conditions, 2149 events. 158/2149 cut-off events. For 3668/3727 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 21171 event pairs, 25 based on Foata normal form. 7/2068 useless extension candidates. Maximal degree in co-relation 4824. Up to 130 conditions per place. [2022-11-20 10:56:19,989 INFO L137 encePairwiseOnDemand]: 216/220 looper letters, 19 selfloop transitions, 2 changer transitions 3/277 dead transitions. [2022-11-20 10:56:19,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 277 transitions, 1388 flow [2022-11-20 10:56:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:56:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2022-11-20 10:56:19,992 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9363636363636364 [2022-11-20 10:56:19,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2022-11-20 10:56:19,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2022-11-20 10:56:19,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:19,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2022-11-20 10:56:19,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:19,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:19,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:19,997 INFO L175 Difference]: Start difference. First operand has 292 places, 270 transitions, 1323 flow. Second operand 3 states and 618 transitions. [2022-11-20 10:56:19,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 277 transitions, 1388 flow [2022-11-20 10:56:20,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 277 transitions, 1380 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:20,035 INFO L231 Difference]: Finished difference. Result has 294 places, 269 transitions, 1325 flow [2022-11-20 10:56:20,036 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1325, PETRI_PLACES=294, PETRI_TRANSITIONS=269} [2022-11-20 10:56:20,037 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 92 predicate places. [2022-11-20 10:56:20,037 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 269 transitions, 1325 flow [2022-11-20 10:56:20,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:20,038 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:20,038 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:20,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:56:20,039 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:20,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2008515486, now seen corresponding path program 2 times [2022-11-20 10:56:20,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:20,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239406195] [2022-11-20 10:56:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:20,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:20,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:20,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239406195] [2022-11-20 10:56:20,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239406195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:20,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:20,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:56:20,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210567202] [2022-11-20 10:56:20,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:20,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:56:20,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:20,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:56:20,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:56:20,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 220 [2022-11-20 10:56:20,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 269 transitions, 1325 flow. Second operand has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:20,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:20,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 220 [2022-11-20 10:56:20,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:20,775 INFO L130 PetriNetUnfolder]: 138/1929 cut-off events. [2022-11-20 10:56:20,775 INFO L131 PetriNetUnfolder]: For 3363/3556 co-relation queries the response was YES. [2022-11-20 10:56:20,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4417 conditions, 1929 events. 138/1929 cut-off events. For 3363/3556 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 18420 event pairs, 35 based on Foata normal form. 11/1847 useless extension candidates. Maximal degree in co-relation 4164. Up to 175 conditions per place. [2022-11-20 10:56:20,803 INFO L137 encePairwiseOnDemand]: 210/220 looper letters, 52 selfloop transitions, 8 changer transitions 5/296 dead transitions. [2022-11-20 10:56:20,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 296 transitions, 1558 flow [2022-11-20 10:56:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:56:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:56:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1527 transitions. [2022-11-20 10:56:20,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8676136363636363 [2022-11-20 10:56:20,807 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1527 transitions. [2022-11-20 10:56:20,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1527 transitions. [2022-11-20 10:56:20,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:20,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1527 transitions. [2022-11-20 10:56:20,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 190.875) internal successors, (1527), 8 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:20,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:20,817 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:20,817 INFO L175 Difference]: Start difference. First operand has 294 places, 269 transitions, 1325 flow. Second operand 8 states and 1527 transitions. [2022-11-20 10:56:20,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 296 transitions, 1558 flow [2022-11-20 10:56:20,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 296 transitions, 1552 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-20 10:56:20,850 INFO L231 Difference]: Finished difference. Result has 307 places, 274 transitions, 1397 flow [2022-11-20 10:56:20,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1397, PETRI_PLACES=307, PETRI_TRANSITIONS=274} [2022-11-20 10:56:20,852 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 105 predicate places. [2022-11-20 10:56:20,852 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 274 transitions, 1397 flow [2022-11-20 10:56:20,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:20,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:20,853 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:20,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:56:20,854 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:20,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:20,855 INFO L85 PathProgramCache]: Analyzing trace with hash 161812212, now seen corresponding path program 3 times [2022-11-20 10:56:20,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:20,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403450339] [2022-11-20 10:56:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:20,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:21,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:21,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:21,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403450339] [2022-11-20 10:56:21,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403450339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:21,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:21,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:56:21,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49370237] [2022-11-20 10:56:21,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:21,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:56:21,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:21,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:56:21,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:56:21,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 220 [2022-11-20 10:56:21,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 274 transitions, 1397 flow. Second operand has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:21,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:21,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 220 [2022-11-20 10:56:21,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:21,772 INFO L130 PetriNetUnfolder]: 143/2019 cut-off events. [2022-11-20 10:56:21,772 INFO L131 PetriNetUnfolder]: For 3565/3752 co-relation queries the response was YES. [2022-11-20 10:56:21,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4652 conditions, 2019 events. 143/2019 cut-off events. For 3565/3752 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 19394 event pairs, 35 based on Foata normal form. 8/1927 useless extension candidates. Maximal degree in co-relation 4434. Up to 174 conditions per place. [2022-11-20 10:56:21,815 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 42 selfloop transitions, 12 changer transitions 11/296 dead transitions. [2022-11-20 10:56:21,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 296 transitions, 1624 flow [2022-11-20 10:56:21,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:56:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 10:56:21,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1527 transitions. [2022-11-20 10:56:21,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8676136363636363 [2022-11-20 10:56:21,822 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1527 transitions. [2022-11-20 10:56:21,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1527 transitions. [2022-11-20 10:56:21,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:21,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1527 transitions. [2022-11-20 10:56:21,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 190.875) internal successors, (1527), 8 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:21,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:21,833 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:21,833 INFO L175 Difference]: Start difference. First operand has 307 places, 274 transitions, 1397 flow. Second operand 8 states and 1527 transitions. [2022-11-20 10:56:21,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 296 transitions, 1624 flow [2022-11-20 10:56:21,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 296 transitions, 1614 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:21,868 INFO L231 Difference]: Finished difference. Result has 314 places, 272 transitions, 1422 flow [2022-11-20 10:56:21,868 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1422, PETRI_PLACES=314, PETRI_TRANSITIONS=272} [2022-11-20 10:56:21,869 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 112 predicate places. [2022-11-20 10:56:21,869 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 272 transitions, 1422 flow [2022-11-20 10:56:21,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:21,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:21,870 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:21,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:56:21,871 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:21,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:21,871 INFO L85 PathProgramCache]: Analyzing trace with hash 319903025, now seen corresponding path program 1 times [2022-11-20 10:56:21,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:21,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054273376] [2022-11-20 10:56:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:21,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:22,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:22,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054273376] [2022-11-20 10:56:22,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054273376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:22,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:22,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:56:22,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850532658] [2022-11-20 10:56:22,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:22,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:56:22,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:22,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:56:22,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:56:22,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 220 [2022-11-20 10:56:22,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 272 transitions, 1422 flow. Second operand has 7 states, 7 states have (on average 189.85714285714286) internal successors, (1329), 7 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:22,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:22,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 220 [2022-11-20 10:56:22,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:22,417 INFO L130 PetriNetUnfolder]: 70/1073 cut-off events. [2022-11-20 10:56:22,418 INFO L131 PetriNetUnfolder]: For 1715/1843 co-relation queries the response was YES. [2022-11-20 10:56:22,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2315 conditions, 1073 events. 70/1073 cut-off events. For 1715/1843 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 8405 event pairs, 14 based on Foata normal form. 6/1019 useless extension candidates. Maximal degree in co-relation 2217. Up to 66 conditions per place. [2022-11-20 10:56:22,438 INFO L137 encePairwiseOnDemand]: 212/220 looper letters, 25 selfloop transitions, 1 changer transitions 26/292 dead transitions. [2022-11-20 10:56:22,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 292 transitions, 1594 flow [2022-11-20 10:56:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:56:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:56:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1726 transitions. [2022-11-20 10:56:22,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8717171717171717 [2022-11-20 10:56:22,442 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1726 transitions. [2022-11-20 10:56:22,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1726 transitions. [2022-11-20 10:56:22,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:22,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1726 transitions. [2022-11-20 10:56:22,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.77777777777777) internal successors, (1726), 9 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:22,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 220.0) internal successors, (2200), 10 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:22,451 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 220.0) internal successors, (2200), 10 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:22,451 INFO L175 Difference]: Start difference. First operand has 314 places, 272 transitions, 1422 flow. Second operand 9 states and 1726 transitions. [2022-11-20 10:56:22,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 292 transitions, 1594 flow [2022-11-20 10:56:22,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 292 transitions, 1519 flow, removed 13 selfloop flow, removed 15 redundant places. [2022-11-20 10:56:22,472 INFO L231 Difference]: Finished difference. Result has 310 places, 266 transitions, 1332 flow [2022-11-20 10:56:22,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1332, PETRI_PLACES=310, PETRI_TRANSITIONS=266} [2022-11-20 10:56:22,474 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 108 predicate places. [2022-11-20 10:56:22,474 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 266 transitions, 1332 flow [2022-11-20 10:56:22,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 189.85714285714286) internal successors, (1329), 7 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:22,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:22,475 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:56:22,476 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash -584166186, now seen corresponding path program 1 times [2022-11-20 10:56:22,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:22,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668792041] [2022-11-20 10:56:22,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:22,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:22,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:22,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668792041] [2022-11-20 10:56:22,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668792041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:22,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:22,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:22,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291582789] [2022-11-20 10:56:22,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:22,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:56:22,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:22,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:56:22,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:22,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 220 [2022-11-20 10:56:22,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 266 transitions, 1332 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:22,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:22,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 220 [2022-11-20 10:56:22,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:22,701 INFO L130 PetriNetUnfolder]: 49/793 cut-off events. [2022-11-20 10:56:22,701 INFO L131 PetriNetUnfolder]: For 1289/1408 co-relation queries the response was YES. [2022-11-20 10:56:22,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1724 conditions, 793 events. 49/793 cut-off events. For 1289/1408 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5358 event pairs, 8 based on Foata normal form. 2/748 useless extension candidates. Maximal degree in co-relation 1672. Up to 39 conditions per place. [2022-11-20 10:56:22,712 INFO L137 encePairwiseOnDemand]: 214/220 looper letters, 12 selfloop transitions, 4 changer transitions 4/264 dead transitions. [2022-11-20 10:56:22,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 264 transitions, 1343 flow [2022-11-20 10:56:22,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:56:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2022-11-20 10:56:22,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9287878787878788 [2022-11-20 10:56:22,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2022-11-20 10:56:22,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2022-11-20 10:56:22,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:22,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2022-11-20 10:56:22,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:22,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:22,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:22,717 INFO L175 Difference]: Start difference. First operand has 310 places, 266 transitions, 1332 flow. Second operand 3 states and 613 transitions. [2022-11-20 10:56:22,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 264 transitions, 1343 flow [2022-11-20 10:56:22,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 264 transitions, 1324 flow, removed 7 selfloop flow, removed 9 redundant places. [2022-11-20 10:56:22,733 INFO L231 Difference]: Finished difference. Result has 295 places, 260 transitions, 1281 flow [2022-11-20 10:56:22,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1281, PETRI_PLACES=295, PETRI_TRANSITIONS=260} [2022-11-20 10:56:22,735 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 93 predicate places. [2022-11-20 10:56:22,735 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 260 transitions, 1281 flow [2022-11-20 10:56:22,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:22,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:22,736 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:22,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:56:22,736 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:22,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:22,737 INFO L85 PathProgramCache]: Analyzing trace with hash 223589941, now seen corresponding path program 1 times [2022-11-20 10:56:22,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:22,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248567385] [2022-11-20 10:56:22,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:22,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:23,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:23,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248567385] [2022-11-20 10:56:23,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248567385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:23,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:23,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:23,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738892426] [2022-11-20 10:56:23,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:23,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:23,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:23,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:23,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:23,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:23,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 260 transitions, 1281 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:23,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:23,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:23,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:23,998 INFO L130 PetriNetUnfolder]: 667/2197 cut-off events. [2022-11-20 10:56:23,998 INFO L131 PetriNetUnfolder]: For 4569/4602 co-relation queries the response was YES. [2022-11-20 10:56:24,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 2197 events. 667/2197 cut-off events. For 4569/4602 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 18135 event pairs, 326 based on Foata normal form. 1/2025 useless extension candidates. Maximal degree in co-relation 5774. Up to 857 conditions per place. [2022-11-20 10:56:24,039 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 147 selfloop transitions, 30 changer transitions 28/379 dead transitions. [2022-11-20 10:56:24,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 379 transitions, 2270 flow [2022-11-20 10:56:24,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:56:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 10:56:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4436 transitions. [2022-11-20 10:56:24,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8401515151515152 [2022-11-20 10:56:24,047 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4436 transitions. [2022-11-20 10:56:24,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4436 transitions. [2022-11-20 10:56:24,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:24,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4436 transitions. [2022-11-20 10:56:24,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 184.83333333333334) internal successors, (4436), 24 states have internal predecessors, (4436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:24,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 220.0) internal successors, (5500), 25 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:24,075 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 220.0) internal successors, (5500), 25 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:24,075 INFO L175 Difference]: Start difference. First operand has 295 places, 260 transitions, 1281 flow. Second operand 24 states and 4436 transitions. [2022-11-20 10:56:24,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 379 transitions, 2270 flow [2022-11-20 10:56:24,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 379 transitions, 2254 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:24,108 INFO L231 Difference]: Finished difference. Result has 334 places, 289 transitions, 1525 flow [2022-11-20 10:56:24,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1525, PETRI_PLACES=334, PETRI_TRANSITIONS=289} [2022-11-20 10:56:24,110 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 132 predicate places. [2022-11-20 10:56:24,111 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 289 transitions, 1525 flow [2022-11-20 10:56:24,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:24,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:24,112 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:24,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:56:24,112 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:24,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1447591949, now seen corresponding path program 2 times [2022-11-20 10:56:24,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:24,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764159561] [2022-11-20 10:56:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:24,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:24,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:24,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764159561] [2022-11-20 10:56:24,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764159561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:24,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:24,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:24,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985848909] [2022-11-20 10:56:24,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:24,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:24,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:24,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:24,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:24,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 289 transitions, 1525 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:24,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:24,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:24,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:25,670 INFO L130 PetriNetUnfolder]: 1008/3177 cut-off events. [2022-11-20 10:56:25,670 INFO L131 PetriNetUnfolder]: For 11545/11576 co-relation queries the response was YES. [2022-11-20 10:56:25,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11204 conditions, 3177 events. 1008/3177 cut-off events. For 11545/11576 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 28321 event pairs, 515 based on Foata normal form. 2/2976 useless extension candidates. Maximal degree in co-relation 11140. Up to 1184 conditions per place. [2022-11-20 10:56:25,734 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 110 selfloop transitions, 45 changer transitions 103/425 dead transitions. [2022-11-20 10:56:25,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 425 transitions, 2887 flow [2022-11-20 10:56:25,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:56:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 10:56:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4433 transitions. [2022-11-20 10:56:25,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8395833333333333 [2022-11-20 10:56:25,743 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4433 transitions. [2022-11-20 10:56:25,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4433 transitions. [2022-11-20 10:56:25,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:25,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4433 transitions. [2022-11-20 10:56:25,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 184.70833333333334) internal successors, (4433), 24 states have internal predecessors, (4433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:25,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 220.0) internal successors, (5500), 25 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:25,764 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 220.0) internal successors, (5500), 25 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:25,764 INFO L175 Difference]: Start difference. First operand has 334 places, 289 transitions, 1525 flow. Second operand 24 states and 4433 transitions. [2022-11-20 10:56:25,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 425 transitions, 2887 flow [2022-11-20 10:56:25,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 425 transitions, 2801 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:25,959 INFO L231 Difference]: Finished difference. Result has 373 places, 256 transitions, 1182 flow [2022-11-20 10:56:25,961 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1182, PETRI_PLACES=373, PETRI_TRANSITIONS=256} [2022-11-20 10:56:25,963 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 171 predicate places. [2022-11-20 10:56:25,963 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 256 transitions, 1182 flow [2022-11-20 10:56:25,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:25,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:25,964 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:25,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:56:25,965 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:25,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash 487708427, now seen corresponding path program 3 times [2022-11-20 10:56:25,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:25,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844671995] [2022-11-20 10:56:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:25,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:26,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:26,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844671995] [2022-11-20 10:56:26,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844671995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:26,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:26,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:26,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128755934] [2022-11-20 10:56:26,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:26,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:26,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:26,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:26,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:26,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:26,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 256 transitions, 1182 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:26,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:26,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:26,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:27,682 INFO L130 PetriNetUnfolder]: 839/2770 cut-off events. [2022-11-20 10:56:27,683 INFO L131 PetriNetUnfolder]: For 15426/15590 co-relation queries the response was YES. [2022-11-20 10:56:27,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10836 conditions, 2770 events. 839/2770 cut-off events. For 15426/15590 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 23738 event pairs, 401 based on Foata normal form. 10/2593 useless extension candidates. Maximal degree in co-relation 10753. Up to 906 conditions per place. [2022-11-20 10:56:27,741 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 104 selfloop transitions, 56 changer transitions 24/351 dead transitions. [2022-11-20 10:56:27,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 351 transitions, 2490 flow [2022-11-20 10:56:27,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:56:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 10:56:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4056 transitions. [2022-11-20 10:56:27,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8380165289256198 [2022-11-20 10:56:27,760 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4056 transitions. [2022-11-20 10:56:27,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4056 transitions. [2022-11-20 10:56:27,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:27,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4056 transitions. [2022-11-20 10:56:27,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 184.36363636363637) internal successors, (4056), 22 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:27,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 220.0) internal successors, (5060), 23 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:27,784 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 220.0) internal successors, (5060), 23 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:27,785 INFO L175 Difference]: Start difference. First operand has 373 places, 256 transitions, 1182 flow. Second operand 22 states and 4056 transitions. [2022-11-20 10:56:27,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 351 transitions, 2490 flow [2022-11-20 10:56:27,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 351 transitions, 2095 flow, removed 182 selfloop flow, removed 24 redundant places. [2022-11-20 10:56:27,912 INFO L231 Difference]: Finished difference. Result has 334 places, 286 transitions, 1568 flow [2022-11-20 10:56:27,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1568, PETRI_PLACES=334, PETRI_TRANSITIONS=286} [2022-11-20 10:56:27,914 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 132 predicate places. [2022-11-20 10:56:27,916 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 286 transitions, 1568 flow [2022-11-20 10:56:27,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:27,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:27,917 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:27,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:56:27,919 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:27,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:27,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1696774191, now seen corresponding path program 4 times [2022-11-20 10:56:27,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:27,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503378812] [2022-11-20 10:56:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:27,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:28,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:28,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503378812] [2022-11-20 10:56:28,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503378812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:28,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:28,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:28,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371187140] [2022-11-20 10:56:28,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:28,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:28,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:28,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:28,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:28,256 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:28,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 286 transitions, 1568 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:28,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:28,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:28,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:29,324 INFO L130 PetriNetUnfolder]: 863/2768 cut-off events. [2022-11-20 10:56:29,324 INFO L131 PetriNetUnfolder]: For 14747/14770 co-relation queries the response was YES. [2022-11-20 10:56:29,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10877 conditions, 2768 events. 863/2768 cut-off events. For 14747/14770 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 23863 event pairs, 417 based on Foata normal form. 1/2559 useless extension candidates. Maximal degree in co-relation 10801. Up to 989 conditions per place. [2022-11-20 10:56:29,383 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 108 selfloop transitions, 65 changer transitions 14/354 dead transitions. [2022-11-20 10:56:29,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 354 transitions, 2563 flow [2022-11-20 10:56:29,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:56:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 10:56:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2959 transitions. [2022-11-20 10:56:29,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.840625 [2022-11-20 10:56:29,390 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2959 transitions. [2022-11-20 10:56:29,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2959 transitions. [2022-11-20 10:56:29,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:29,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2959 transitions. [2022-11-20 10:56:29,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 184.9375) internal successors, (2959), 16 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:29,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:29,407 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:29,408 INFO L175 Difference]: Start difference. First operand has 334 places, 286 transitions, 1568 flow. Second operand 16 states and 2959 transitions. [2022-11-20 10:56:29,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 354 transitions, 2563 flow [2022-11-20 10:56:29,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 354 transitions, 2303 flow, removed 128 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:29,544 INFO L231 Difference]: Finished difference. Result has 353 places, 303 transitions, 1802 flow [2022-11-20 10:56:29,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1802, PETRI_PLACES=353, PETRI_TRANSITIONS=303} [2022-11-20 10:56:29,545 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 151 predicate places. [2022-11-20 10:56:29,545 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 303 transitions, 1802 flow [2022-11-20 10:56:29,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:29,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:29,546 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:29,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:56:29,547 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:29,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:29,548 INFO L85 PathProgramCache]: Analyzing trace with hash -251728005, now seen corresponding path program 5 times [2022-11-20 10:56:29,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:29,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764201386] [2022-11-20 10:56:29,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:29,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:29,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:29,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764201386] [2022-11-20 10:56:29,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764201386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:29,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:29,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:29,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315332068] [2022-11-20 10:56:29,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:29,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:29,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:29,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:29,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:29,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:29,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 303 transitions, 1802 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:29,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:29,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:29,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:31,198 INFO L130 PetriNetUnfolder]: 986/3297 cut-off events. [2022-11-20 10:56:31,198 INFO L131 PetriNetUnfolder]: For 23650/23668 co-relation queries the response was YES. [2022-11-20 10:56:31,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13606 conditions, 3297 events. 986/3297 cut-off events. For 23650/23668 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 29482 event pairs, 591 based on Foata normal form. 1/3057 useless extension candidates. Maximal degree in co-relation 13523. Up to 1063 conditions per place. [2022-11-20 10:56:31,246 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 133 selfloop transitions, 62 changer transitions 22/384 dead transitions. [2022-11-20 10:56:31,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 384 transitions, 3136 flow [2022-11-20 10:56:31,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:56:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 10:56:31,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3691 transitions. [2022-11-20 10:56:31,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8388636363636364 [2022-11-20 10:56:31,253 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3691 transitions. [2022-11-20 10:56:31,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3691 transitions. [2022-11-20 10:56:31,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:31,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3691 transitions. [2022-11-20 10:56:31,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 184.55) internal successors, (3691), 20 states have internal predecessors, (3691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:31,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 220.0) internal successors, (4620), 21 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:31,270 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 220.0) internal successors, (4620), 21 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:31,270 INFO L175 Difference]: Start difference. First operand has 353 places, 303 transitions, 1802 flow. Second operand 20 states and 3691 transitions. [2022-11-20 10:56:31,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 384 transitions, 3136 flow [2022-11-20 10:56:31,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 384 transitions, 2995 flow, removed 58 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:31,442 INFO L231 Difference]: Finished difference. Result has 382 places, 335 transitions, 2444 flow [2022-11-20 10:56:31,443 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2444, PETRI_PLACES=382, PETRI_TRANSITIONS=335} [2022-11-20 10:56:31,443 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 180 predicate places. [2022-11-20 10:56:31,444 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 335 transitions, 2444 flow [2022-11-20 10:56:31,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:31,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:31,445 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:31,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:56:31,445 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:31,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:31,446 INFO L85 PathProgramCache]: Analyzing trace with hash -439169997, now seen corresponding path program 6 times [2022-11-20 10:56:31,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:31,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354253257] [2022-11-20 10:56:31,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:31,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:31,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:31,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354253257] [2022-11-20 10:56:31,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354253257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:31,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:31,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:31,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952887879] [2022-11-20 10:56:31,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:31,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:31,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:31,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:31,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:31,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 335 transitions, 2444 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:31,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:31,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:31,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:33,341 INFO L130 PetriNetUnfolder]: 1025/3433 cut-off events. [2022-11-20 10:56:33,341 INFO L131 PetriNetUnfolder]: For 33153/33366 co-relation queries the response was YES. [2022-11-20 10:56:33,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15644 conditions, 3433 events. 1025/3433 cut-off events. For 33153/33366 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 31076 event pairs, 523 based on Foata normal form. 1/3165 useless extension candidates. Maximal degree in co-relation 15548. Up to 1114 conditions per place. [2022-11-20 10:56:33,400 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 144 selfloop transitions, 86 changer transitions 19/416 dead transitions. [2022-11-20 10:56:33,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 416 transitions, 3937 flow [2022-11-20 10:56:33,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:56:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 10:56:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3688 transitions. [2022-11-20 10:56:33,408 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8381818181818181 [2022-11-20 10:56:33,408 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3688 transitions. [2022-11-20 10:56:33,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3688 transitions. [2022-11-20 10:56:33,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:33,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3688 transitions. [2022-11-20 10:56:33,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 184.4) internal successors, (3688), 20 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:33,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 220.0) internal successors, (4620), 21 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:33,426 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 220.0) internal successors, (4620), 21 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:33,426 INFO L175 Difference]: Start difference. First operand has 382 places, 335 transitions, 2444 flow. Second operand 20 states and 3688 transitions. [2022-11-20 10:56:33,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 416 transitions, 3937 flow [2022-11-20 10:56:33,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 416 transitions, 3545 flow, removed 196 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:33,703 INFO L231 Difference]: Finished difference. Result has 412 places, 367 transitions, 3037 flow [2022-11-20 10:56:33,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3037, PETRI_PLACES=412, PETRI_TRANSITIONS=367} [2022-11-20 10:56:33,704 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 210 predicate places. [2022-11-20 10:56:33,704 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 367 transitions, 3037 flow [2022-11-20 10:56:33,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:33,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:33,705 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:33,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:56:33,706 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:33,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:33,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1288516689, now seen corresponding path program 7 times [2022-11-20 10:56:33,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:33,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477203600] [2022-11-20 10:56:33,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:33,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:34,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:34,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477203600] [2022-11-20 10:56:34,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477203600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:34,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:34,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:34,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826765376] [2022-11-20 10:56:34,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:34,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:34,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:34,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:34,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:34,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:34,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 367 transitions, 3037 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:34,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:34,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:34,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:35,649 INFO L130 PetriNetUnfolder]: 1022/3385 cut-off events. [2022-11-20 10:56:35,650 INFO L131 PetriNetUnfolder]: For 30537/30556 co-relation queries the response was YES. [2022-11-20 10:56:35,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15826 conditions, 3385 events. 1022/3385 cut-off events. For 30537/30556 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 30631 event pairs, 444 based on Foata normal form. 1/3125 useless extension candidates. Maximal degree in co-relation 15716. Up to 1108 conditions per place. [2022-11-20 10:56:35,693 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 139 selfloop transitions, 101 changer transitions 23/430 dead transitions. [2022-11-20 10:56:35,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 430 transitions, 4185 flow [2022-11-20 10:56:35,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:56:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:56:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3324 transitions. [2022-11-20 10:56:35,703 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8393939393939394 [2022-11-20 10:56:35,703 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3324 transitions. [2022-11-20 10:56:35,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3324 transitions. [2022-11-20 10:56:35,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:35,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3324 transitions. [2022-11-20 10:56:35,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.66666666666666) internal successors, (3324), 18 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:35,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:35,725 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:35,725 INFO L175 Difference]: Start difference. First operand has 412 places, 367 transitions, 3037 flow. Second operand 18 states and 3324 transitions. [2022-11-20 10:56:35,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 430 transitions, 4185 flow [2022-11-20 10:56:36,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 430 transitions, 3851 flow, removed 167 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:36,118 INFO L231 Difference]: Finished difference. Result has 433 places, 377 transitions, 3250 flow [2022-11-20 10:56:36,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=2831, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3250, PETRI_PLACES=433, PETRI_TRANSITIONS=377} [2022-11-20 10:56:36,121 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 231 predicate places. [2022-11-20 10:56:36,121 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 377 transitions, 3250 flow [2022-11-20 10:56:36,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:36,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:36,122 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:36,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:56:36,122 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash -941180795, now seen corresponding path program 8 times [2022-11-20 10:56:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:36,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518829070] [2022-11-20 10:56:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:36,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:36,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:36,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:36,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518829070] [2022-11-20 10:56:36,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518829070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:36,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:36,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:36,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855787008] [2022-11-20 10:56:36,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:36,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:36,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:36,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:36,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:36,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:36,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 377 transitions, 3250 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:36,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:36,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:36,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:38,103 INFO L130 PetriNetUnfolder]: 1080/3694 cut-off events. [2022-11-20 10:56:38,103 INFO L131 PetriNetUnfolder]: For 29278/29516 co-relation queries the response was YES. [2022-11-20 10:56:38,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16815 conditions, 3694 events. 1080/3694 cut-off events. For 29278/29516 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 34482 event pairs, 553 based on Foata normal form. 1/3403 useless extension candidates. Maximal degree in co-relation 16698. Up to 1157 conditions per place. [2022-11-20 10:56:38,170 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 158 selfloop transitions, 100 changer transitions 16/441 dead transitions. [2022-11-20 10:56:38,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 441 transitions, 4503 flow [2022-11-20 10:56:38,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:56:38,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 10:56:38,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3143 transitions. [2022-11-20 10:56:38,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8403743315508021 [2022-11-20 10:56:38,176 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3143 transitions. [2022-11-20 10:56:38,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3143 transitions. [2022-11-20 10:56:38,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:38,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3143 transitions. [2022-11-20 10:56:38,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 184.88235294117646) internal successors, (3143), 17 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:38,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:38,191 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:38,191 INFO L175 Difference]: Start difference. First operand has 433 places, 377 transitions, 3250 flow. Second operand 17 states and 3143 transitions. [2022-11-20 10:56:38,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 441 transitions, 4503 flow [2022-11-20 10:56:38,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 441 transitions, 4400 flow, removed 33 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:38,519 INFO L231 Difference]: Finished difference. Result has 453 places, 398 transitions, 3826 flow [2022-11-20 10:56:38,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=3156, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3826, PETRI_PLACES=453, PETRI_TRANSITIONS=398} [2022-11-20 10:56:38,521 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 251 predicate places. [2022-11-20 10:56:38,521 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 398 transitions, 3826 flow [2022-11-20 10:56:38,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:38,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:38,522 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:38,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 10:56:38,522 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:38,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1418743075, now seen corresponding path program 9 times [2022-11-20 10:56:38,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:38,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380593790] [2022-11-20 10:56:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:38,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:39,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:39,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380593790] [2022-11-20 10:56:39,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380593790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:39,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:39,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:39,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943700027] [2022-11-20 10:56:39,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:39,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:39,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:39,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:39,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 398 transitions, 3826 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:39,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:39,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:39,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:40,711 INFO L130 PetriNetUnfolder]: 1114/3786 cut-off events. [2022-11-20 10:56:40,712 INFO L131 PetriNetUnfolder]: For 31924/31943 co-relation queries the response was YES. [2022-11-20 10:56:40,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18422 conditions, 3786 events. 1114/3786 cut-off events. For 31924/31943 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 35613 event pairs, 500 based on Foata normal form. 1/3488 useless extension candidates. Maximal degree in co-relation 18297. Up to 1213 conditions per place. [2022-11-20 10:56:40,794 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 184 selfloop transitions, 92 changer transitions 15/458 dead transitions. [2022-11-20 10:56:40,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 458 transitions, 5128 flow [2022-11-20 10:56:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:56:40,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 10:56:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3143 transitions. [2022-11-20 10:56:40,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8403743315508021 [2022-11-20 10:56:40,800 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3143 transitions. [2022-11-20 10:56:40,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3143 transitions. [2022-11-20 10:56:40,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:40,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3143 transitions. [2022-11-20 10:56:40,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 184.88235294117646) internal successors, (3143), 17 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:40,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:40,815 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:40,815 INFO L175 Difference]: Start difference. First operand has 453 places, 398 transitions, 3826 flow. Second operand 17 states and 3143 transitions. [2022-11-20 10:56:40,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 458 transitions, 5128 flow [2022-11-20 10:56:41,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 458 transitions, 4966 flow, removed 81 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:41,245 INFO L231 Difference]: Finished difference. Result has 475 places, 419 transitions, 4399 flow [2022-11-20 10:56:41,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=3676, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4399, PETRI_PLACES=475, PETRI_TRANSITIONS=419} [2022-11-20 10:56:41,246 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 273 predicate places. [2022-11-20 10:56:41,246 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 419 transitions, 4399 flow [2022-11-20 10:56:41,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:41,246 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:41,247 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:41,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 10:56:41,247 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:41,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:41,247 INFO L85 PathProgramCache]: Analyzing trace with hash -309761931, now seen corresponding path program 10 times [2022-11-20 10:56:41,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:41,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623537866] [2022-11-20 10:56:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:41,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:41,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:41,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623537866] [2022-11-20 10:56:41,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623537866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:41,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:41,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:41,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46476468] [2022-11-20 10:56:41,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:41,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:41,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:41,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:41,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:41,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:41,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 419 transitions, 4399 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:41,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:41,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:41,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:43,099 INFO L130 PetriNetUnfolder]: 1119/3850 cut-off events. [2022-11-20 10:56:43,099 INFO L131 PetriNetUnfolder]: For 34326/34345 co-relation queries the response was YES. [2022-11-20 10:56:43,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19328 conditions, 3850 events. 1119/3850 cut-off events. For 34326/34345 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 37027 event pairs, 460 based on Foata normal form. 1/3543 useless extension candidates. Maximal degree in co-relation 19194. Up to 1235 conditions per place. [2022-11-20 10:56:43,176 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 167 selfloop transitions, 115 changer transitions 20/469 dead transitions. [2022-11-20 10:56:43,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 469 transitions, 5519 flow [2022-11-20 10:56:43,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:56:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:56:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3323 transitions. [2022-11-20 10:56:43,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8391414141414142 [2022-11-20 10:56:43,183 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3323 transitions. [2022-11-20 10:56:43,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3323 transitions. [2022-11-20 10:56:43,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:43,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3323 transitions. [2022-11-20 10:56:43,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.61111111111111) internal successors, (3323), 18 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:43,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:43,197 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:43,198 INFO L175 Difference]: Start difference. First operand has 475 places, 419 transitions, 4399 flow. Second operand 18 states and 3323 transitions. [2022-11-20 10:56:43,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 469 transitions, 5519 flow [2022-11-20 10:56:43,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 469 transitions, 5269 flow, removed 102 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:43,569 INFO L231 Difference]: Finished difference. Result has 494 places, 432 transitions, 4711 flow [2022-11-20 10:56:43,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4711, PETRI_PLACES=494, PETRI_TRANSITIONS=432} [2022-11-20 10:56:43,570 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 292 predicate places. [2022-11-20 10:56:43,570 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 432 transitions, 4711 flow [2022-11-20 10:56:43,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:43,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:43,571 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:43,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 10:56:43,572 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:43,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:43,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1435397627, now seen corresponding path program 11 times [2022-11-20 10:56:43,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:43,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361208046] [2022-11-20 10:56:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:43,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:43,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:43,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361208046] [2022-11-20 10:56:43,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361208046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:43,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:43,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:43,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302366673] [2022-11-20 10:56:43,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:43,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:43,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:43,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:43,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:43,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:43,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 432 transitions, 4711 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:43,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:43,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:43,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:45,620 INFO L130 PetriNetUnfolder]: 1154/4060 cut-off events. [2022-11-20 10:56:45,621 INFO L131 PetriNetUnfolder]: For 36903/36922 co-relation queries the response was YES. [2022-11-20 10:56:45,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20400 conditions, 4060 events. 1154/4060 cut-off events. For 36903/36922 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 39527 event pairs, 478 based on Foata normal form. 1/3752 useless extension candidates. Maximal degree in co-relation 20261. Up to 1150 conditions per place. [2022-11-20 10:56:45,676 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 193 selfloop transitions, 120 changer transitions 23/503 dead transitions. [2022-11-20 10:56:45,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 503 transitions, 6190 flow [2022-11-20 10:56:45,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:56:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 10:56:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3875 transitions. [2022-11-20 10:56:45,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8387445887445888 [2022-11-20 10:56:45,681 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3875 transitions. [2022-11-20 10:56:45,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3875 transitions. [2022-11-20 10:56:45,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:45,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3875 transitions. [2022-11-20 10:56:45,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 184.52380952380952) internal successors, (3875), 21 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:45,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 220.0) internal successors, (4840), 22 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:45,693 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 220.0) internal successors, (4840), 22 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:45,693 INFO L175 Difference]: Start difference. First operand has 494 places, 432 transitions, 4711 flow. Second operand 21 states and 3875 transitions. [2022-11-20 10:56:45,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 503 transitions, 6190 flow [2022-11-20 10:56:46,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 503 transitions, 5985 flow, removed 51 selfloop flow, removed 5 redundant places. [2022-11-20 10:56:46,065 INFO L231 Difference]: Finished difference. Result has 520 places, 455 transitions, 5361 flow [2022-11-20 10:56:46,065 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=4516, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5361, PETRI_PLACES=520, PETRI_TRANSITIONS=455} [2022-11-20 10:56:46,066 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 318 predicate places. [2022-11-20 10:56:46,066 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 455 transitions, 5361 flow [2022-11-20 10:56:46,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:46,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:46,067 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:46,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 10:56:46,067 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:46,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:46,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2111248209, now seen corresponding path program 12 times [2022-11-20 10:56:46,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:46,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133649259] [2022-11-20 10:56:46,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:46,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:46,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:46,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133649259] [2022-11-20 10:56:46,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133649259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:46,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:46,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:46,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527566383] [2022-11-20 10:56:46,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:46,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:46,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:46,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:46,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:46,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:46,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 455 transitions, 5361 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:46,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:46,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:46,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:48,016 INFO L130 PetriNetUnfolder]: 1152/4173 cut-off events. [2022-11-20 10:56:48,016 INFO L131 PetriNetUnfolder]: For 44497/44774 co-relation queries the response was YES. [2022-11-20 10:56:48,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21113 conditions, 4173 events. 1152/4173 cut-off events. For 44497/44774 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 40912 event pairs, 569 based on Foata normal form. 1/3851 useless extension candidates. Maximal degree in co-relation 20964. Up to 1269 conditions per place. [2022-11-20 10:56:48,107 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 195 selfloop transitions, 116 changer transitions 24/502 dead transitions. [2022-11-20 10:56:48,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 502 transitions, 6470 flow [2022-11-20 10:56:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:56:48,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:56:48,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3327 transitions. [2022-11-20 10:56:48,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8401515151515152 [2022-11-20 10:56:48,111 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3327 transitions. [2022-11-20 10:56:48,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3327 transitions. [2022-11-20 10:56:48,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:48,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3327 transitions. [2022-11-20 10:56:48,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.83333333333334) internal successors, (3327), 18 states have internal predecessors, (3327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:48,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:48,122 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:48,123 INFO L175 Difference]: Start difference. First operand has 520 places, 455 transitions, 5361 flow. Second operand 18 states and 3327 transitions. [2022-11-20 10:56:48,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 502 transitions, 6470 flow [2022-11-20 10:56:48,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 502 transitions, 6316 flow, removed 77 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:48,531 INFO L231 Difference]: Finished difference. Result has 540 places, 464 transitions, 5719 flow [2022-11-20 10:56:48,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=5227, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5719, PETRI_PLACES=540, PETRI_TRANSITIONS=464} [2022-11-20 10:56:48,532 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 338 predicate places. [2022-11-20 10:56:48,532 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 464 transitions, 5719 flow [2022-11-20 10:56:48,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:48,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:48,532 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:48,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 10:56:48,533 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:48,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1719473611, now seen corresponding path program 13 times [2022-11-20 10:56:48,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:48,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548717373] [2022-11-20 10:56:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:48,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:48,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548717373] [2022-11-20 10:56:48,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548717373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:48,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:48,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:48,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955686806] [2022-11-20 10:56:48,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:48,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:48,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:48,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:48,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:48,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:48,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 464 transitions, 5719 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:48,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:48,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:48,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:50,507 INFO L130 PetriNetUnfolder]: 1249/4419 cut-off events. [2022-11-20 10:56:50,507 INFO L131 PetriNetUnfolder]: For 50020/50038 co-relation queries the response was YES. [2022-11-20 10:56:50,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23356 conditions, 4419 events. 1249/4419 cut-off events. For 50020/50038 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 44619 event pairs, 491 based on Foata normal form. 1/4086 useless extension candidates. Maximal degree in co-relation 23201. Up to 1304 conditions per place. [2022-11-20 10:56:50,603 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 216 selfloop transitions, 143 changer transitions 23/549 dead transitions. [2022-11-20 10:56:50,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 549 transitions, 7457 flow [2022-11-20 10:56:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:56:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 10:56:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4052 transitions. [2022-11-20 10:56:50,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8371900826446281 [2022-11-20 10:56:50,608 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4052 transitions. [2022-11-20 10:56:50,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4052 transitions. [2022-11-20 10:56:50,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:50,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4052 transitions. [2022-11-20 10:56:50,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 184.1818181818182) internal successors, (4052), 22 states have internal predecessors, (4052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:50,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 220.0) internal successors, (5060), 23 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:50,620 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 220.0) internal successors, (5060), 23 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:50,620 INFO L175 Difference]: Start difference. First operand has 540 places, 464 transitions, 5719 flow. Second operand 22 states and 4052 transitions. [2022-11-20 10:56:50,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 549 transitions, 7457 flow [2022-11-20 10:56:51,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 549 transitions, 7332 flow, removed 61 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:51,123 INFO L231 Difference]: Finished difference. Result has 570 places, 496 transitions, 6633 flow [2022-11-20 10:56:51,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=5596, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6633, PETRI_PLACES=570, PETRI_TRANSITIONS=496} [2022-11-20 10:56:51,124 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 368 predicate places. [2022-11-20 10:56:51,125 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 496 transitions, 6633 flow [2022-11-20 10:56:51,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:51,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:51,126 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:51,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 10:56:51,126 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:51,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:51,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1723597027, now seen corresponding path program 14 times [2022-11-20 10:56:51,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:51,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690215929] [2022-11-20 10:56:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:51,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:51,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:51,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690215929] [2022-11-20 10:56:51,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690215929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:51,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:51,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:51,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076471709] [2022-11-20 10:56:51,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:51,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:51,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:51,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:51,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:51,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:51,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 496 transitions, 6633 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:51,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:51,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:51,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:53,403 INFO L130 PetriNetUnfolder]: 1283/4617 cut-off events. [2022-11-20 10:56:53,403 INFO L131 PetriNetUnfolder]: For 58749/58767 co-relation queries the response was YES. [2022-11-20 10:56:53,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25538 conditions, 4617 events. 1283/4617 cut-off events. For 58749/58767 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 46905 event pairs, 602 based on Foata normal form. 1/4263 useless extension candidates. Maximal degree in co-relation 25371. Up to 1329 conditions per place. [2022-11-20 10:56:53,501 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 270 selfloop transitions, 105 changer transitions 21/563 dead transitions. [2022-11-20 10:56:53,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 563 transitions, 8308 flow [2022-11-20 10:56:53,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:56:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 10:56:53,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3871 transitions. [2022-11-20 10:56:53,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8378787878787879 [2022-11-20 10:56:53,505 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3871 transitions. [2022-11-20 10:56:53,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3871 transitions. [2022-11-20 10:56:53,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:53,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3871 transitions. [2022-11-20 10:56:53,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 184.33333333333334) internal successors, (3871), 21 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:53,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 220.0) internal successors, (4840), 22 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:53,517 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 220.0) internal successors, (4840), 22 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:53,517 INFO L175 Difference]: Start difference. First operand has 570 places, 496 transitions, 6633 flow. Second operand 21 states and 3871 transitions. [2022-11-20 10:56:53,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 563 transitions, 8308 flow [2022-11-20 10:56:54,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 563 transitions, 8128 flow, removed 90 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:54,071 INFO L231 Difference]: Finished difference. Result has 600 places, 520 transitions, 7317 flow [2022-11-20 10:56:54,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=6467, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7317, PETRI_PLACES=600, PETRI_TRANSITIONS=520} [2022-11-20 10:56:54,072 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 398 predicate places. [2022-11-20 10:56:54,072 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 520 transitions, 7317 flow [2022-11-20 10:56:54,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:54,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:54,073 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:54,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 10:56:54,073 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:54,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:54,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1115694345, now seen corresponding path program 15 times [2022-11-20 10:56:54,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:54,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161338847] [2022-11-20 10:56:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:54,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:54,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:54,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161338847] [2022-11-20 10:56:54,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161338847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:54,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:54,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:54,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486933458] [2022-11-20 10:56:54,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:54,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:54,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:54,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:54,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:54,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:54,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 520 transitions, 7317 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:54,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:54,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:54,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:56,373 INFO L130 PetriNetUnfolder]: 1306/4759 cut-off events. [2022-11-20 10:56:56,373 INFO L131 PetriNetUnfolder]: For 64586/64605 co-relation queries the response was YES. [2022-11-20 10:56:56,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26884 conditions, 4759 events. 1306/4759 cut-off events. For 64586/64605 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 48692 event pairs, 487 based on Foata normal form. 2/4403 useless extension candidates. Maximal degree in co-relation 26704. Up to 1400 conditions per place. [2022-11-20 10:56:56,463 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 237 selfloop transitions, 161 changer transitions 18/583 dead transitions. [2022-11-20 10:56:56,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 583 transitions, 8877 flow [2022-11-20 10:56:56,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:56:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:56:56,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3322 transitions. [2022-11-20 10:56:56,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8388888888888889 [2022-11-20 10:56:56,466 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3322 transitions. [2022-11-20 10:56:56,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3322 transitions. [2022-11-20 10:56:56,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:56,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3322 transitions. [2022-11-20 10:56:56,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.55555555555554) internal successors, (3322), 18 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:56,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:56,476 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:56,477 INFO L175 Difference]: Start difference. First operand has 600 places, 520 transitions, 7317 flow. Second operand 18 states and 3322 transitions. [2022-11-20 10:56:56,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 583 transitions, 8877 flow [2022-11-20 10:56:57,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 583 transitions, 8691 flow, removed 93 selfloop flow, removed 2 redundant places. [2022-11-20 10:56:57,121 INFO L231 Difference]: Finished difference. Result has 621 places, 541 transitions, 7979 flow [2022-11-20 10:56:57,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=7133, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7979, PETRI_PLACES=621, PETRI_TRANSITIONS=541} [2022-11-20 10:56:57,123 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 419 predicate places. [2022-11-20 10:56:57,123 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 541 transitions, 7979 flow [2022-11-20 10:56:57,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:57,124 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:57,124 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:57,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 10:56:57,124 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:56:57,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:57,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1606330793, now seen corresponding path program 16 times [2022-11-20 10:56:57,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:57,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479328618] [2022-11-20 10:56:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:57,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:57,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:57,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479328618] [2022-11-20 10:56:57,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479328618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:57,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:57,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:56:57,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834569965] [2022-11-20 10:56:57,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:57,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:57,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:57,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:57,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:57,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:56:57,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 541 transitions, 7979 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:57,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:57,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:56:57,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:00,108 INFO L130 PetriNetUnfolder]: 1361/4838 cut-off events. [2022-11-20 10:57:00,108 INFO L131 PetriNetUnfolder]: For 67152/67171 co-relation queries the response was YES. [2022-11-20 10:57:00,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28831 conditions, 4838 events. 1361/4838 cut-off events. For 67152/67171 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 49782 event pairs, 486 based on Foata normal form. 2/4454 useless extension candidates. Maximal degree in co-relation 28644. Up to 1443 conditions per place. [2022-11-20 10:57:00,234 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 280 selfloop transitions, 134 changer transitions 16/597 dead transitions. [2022-11-20 10:57:00,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 597 transitions, 9583 flow [2022-11-20 10:57:00,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:57:00,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 10:57:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3141 transitions. [2022-11-20 10:57:00,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8398395721925134 [2022-11-20 10:57:00,239 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3141 transitions. [2022-11-20 10:57:00,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3141 transitions. [2022-11-20 10:57:00,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:00,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3141 transitions. [2022-11-20 10:57:00,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 184.76470588235293) internal successors, (3141), 17 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:00,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:00,247 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:00,247 INFO L175 Difference]: Start difference. First operand has 621 places, 541 transitions, 7979 flow. Second operand 17 states and 3141 transitions. [2022-11-20 10:57:00,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 597 transitions, 9583 flow [2022-11-20 10:57:00,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 597 transitions, 9359 flow, removed 112 selfloop flow, removed 2 redundant places. [2022-11-20 10:57:01,005 INFO L231 Difference]: Finished difference. Result has 642 places, 562 transitions, 8611 flow [2022-11-20 10:57:01,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=7799, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8611, PETRI_PLACES=642, PETRI_TRANSITIONS=562} [2022-11-20 10:57:01,007 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 440 predicate places. [2022-11-20 10:57:01,007 INFO L495 AbstractCegarLoop]: Abstraction has has 642 places, 562 transitions, 8611 flow [2022-11-20 10:57:01,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:01,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:01,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:01,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 10:57:01,009 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:57:01,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:01,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1693485741, now seen corresponding path program 17 times [2022-11-20 10:57:01,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:01,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713449060] [2022-11-20 10:57:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:01,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:01,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:01,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713449060] [2022-11-20 10:57:01,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713449060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:01,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:01,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:57:01,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263771838] [2022-11-20 10:57:01,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:01,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:57:01,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:01,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:57:01,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:57:01,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:57:01,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 562 transitions, 8611 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:01,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:01,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:57:01,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:04,027 INFO L130 PetriNetUnfolder]: 1384/5081 cut-off events. [2022-11-20 10:57:04,028 INFO L131 PetriNetUnfolder]: For 73758/73776 co-relation queries the response was YES. [2022-11-20 10:57:04,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30291 conditions, 5081 events. 1384/5081 cut-off events. For 73758/73776 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 53491 event pairs, 529 based on Foata normal form. 1/4688 useless extension candidates. Maximal degree in co-relation 30096. Up to 1478 conditions per place. [2022-11-20 10:57:04,201 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 305 selfloop transitions, 126 changer transitions 17/615 dead transitions. [2022-11-20 10:57:04,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 615 transitions, 10224 flow [2022-11-20 10:57:04,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:57:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:57:04,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3325 transitions. [2022-11-20 10:57:04,205 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8396464646464646 [2022-11-20 10:57:04,205 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3325 transitions. [2022-11-20 10:57:04,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3325 transitions. [2022-11-20 10:57:04,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:04,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3325 transitions. [2022-11-20 10:57:04,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.72222222222223) internal successors, (3325), 18 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:04,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:04,214 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:04,214 INFO L175 Difference]: Start difference. First operand has 642 places, 562 transitions, 8611 flow. Second operand 18 states and 3325 transitions. [2022-11-20 10:57:04,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 615 transitions, 10224 flow [2022-11-20 10:57:04,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 615 transitions, 10084 flow, removed 70 selfloop flow, removed 2 redundant places. [2022-11-20 10:57:04,974 INFO L231 Difference]: Finished difference. Result has 663 places, 581 transitions, 9272 flow [2022-11-20 10:57:04,975 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=8475, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9272, PETRI_PLACES=663, PETRI_TRANSITIONS=581} [2022-11-20 10:57:04,976 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 461 predicate places. [2022-11-20 10:57:04,976 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 581 transitions, 9272 flow [2022-11-20 10:57:04,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:04,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:04,977 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:04,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 10:57:04,978 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:57:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:04,978 INFO L85 PathProgramCache]: Analyzing trace with hash 845720347, now seen corresponding path program 18 times [2022-11-20 10:57:04,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:04,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671768118] [2022-11-20 10:57:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:04,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:05,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:05,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671768118] [2022-11-20 10:57:05,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671768118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:05,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:05,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:57:05,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20220901] [2022-11-20 10:57:05,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:05,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:57:05,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:57:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:57:05,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:57:05,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 581 transitions, 9272 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:05,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:05,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:57:05,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:07,508 INFO L130 PetriNetUnfolder]: 1403/5071 cut-off events. [2022-11-20 10:57:07,508 INFO L131 PetriNetUnfolder]: For 77589/77608 co-relation queries the response was YES. [2022-11-20 10:57:07,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31448 conditions, 5071 events. 1403/5071 cut-off events. For 77589/77608 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 53383 event pairs, 491 based on Foata normal form. 2/4670 useless extension candidates. Maximal degree in co-relation 31246. Up to 1513 conditions per place. [2022-11-20 10:57:07,674 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 287 selfloop transitions, 151 changer transitions 23/628 dead transitions. [2022-11-20 10:57:07,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 628 transitions, 10712 flow [2022-11-20 10:57:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:57:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:57:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3325 transitions. [2022-11-20 10:57:07,678 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8396464646464646 [2022-11-20 10:57:07,678 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3325 transitions. [2022-11-20 10:57:07,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3325 transitions. [2022-11-20 10:57:07,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:07,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3325 transitions. [2022-11-20 10:57:07,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 184.72222222222223) internal successors, (3325), 18 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:07,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:07,685 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:07,685 INFO L175 Difference]: Start difference. First operand has 663 places, 581 transitions, 9272 flow. Second operand 18 states and 3325 transitions. [2022-11-20 10:57:07,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 628 transitions, 10712 flow [2022-11-20 10:57:08,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 676 places, 628 transitions, 10530 flow, removed 91 selfloop flow, removed 2 redundant places. [2022-11-20 10:57:08,573 INFO L231 Difference]: Finished difference. Result has 683 places, 595 transitions, 9802 flow [2022-11-20 10:57:08,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=9096, PETRI_DIFFERENCE_MINUEND_PLACES=659, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9802, PETRI_PLACES=683, PETRI_TRANSITIONS=595} [2022-11-20 10:57:08,573 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 481 predicate places. [2022-11-20 10:57:08,574 INFO L495 AbstractCegarLoop]: Abstraction has has 683 places, 595 transitions, 9802 flow [2022-11-20 10:57:08,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:08,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:08,574 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:08,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 10:57:08,574 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:57:08,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:08,575 INFO L85 PathProgramCache]: Analyzing trace with hash 300571907, now seen corresponding path program 19 times [2022-11-20 10:57:08,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:08,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031531381] [2022-11-20 10:57:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:08,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:08,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:08,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031531381] [2022-11-20 10:57:08,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031531381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:08,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:08,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:57:08,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674476913] [2022-11-20 10:57:08,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:08,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:57:08,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:08,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:57:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:57:08,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:57:08,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 595 transitions, 9802 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:08,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:08,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:57:08,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:11,292 INFO L130 PetriNetUnfolder]: 1406/5265 cut-off events. [2022-11-20 10:57:11,293 INFO L131 PetriNetUnfolder]: For 84671/84689 co-relation queries the response was YES. [2022-11-20 10:57:11,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32347 conditions, 5265 events. 1406/5265 cut-off events. For 84671/84689 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 55773 event pairs, 622 based on Foata normal form. 1/4856 useless extension candidates. Maximal degree in co-relation 32139. Up to 1525 conditions per place. [2022-11-20 10:57:11,408 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 309 selfloop transitions, 137 changer transitions 23/636 dead transitions. [2022-11-20 10:57:11,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 636 transitions, 11114 flow [2022-11-20 10:57:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:57:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 10:57:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3145 transitions. [2022-11-20 10:57:11,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8409090909090909 [2022-11-20 10:57:11,412 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3145 transitions. [2022-11-20 10:57:11,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3145 transitions. [2022-11-20 10:57:11,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:11,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3145 transitions. [2022-11-20 10:57:11,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 185.0) internal successors, (3145), 17 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:11,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:11,417 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 220.0) internal successors, (3960), 18 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:11,417 INFO L175 Difference]: Start difference. First operand has 683 places, 595 transitions, 9802 flow. Second operand 17 states and 3145 transitions. [2022-11-20 10:57:11,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 697 places, 636 transitions, 11114 flow [2022-11-20 10:57:12,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 636 transitions, 10929 flow, removed 55 selfloop flow, removed 4 redundant places. [2022-11-20 10:57:12,257 INFO L231 Difference]: Finished difference. Result has 700 places, 604 transitions, 10162 flow [2022-11-20 10:57:12,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=9624, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10162, PETRI_PLACES=700, PETRI_TRANSITIONS=604} [2022-11-20 10:57:12,258 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 498 predicate places. [2022-11-20 10:57:12,258 INFO L495 AbstractCegarLoop]: Abstraction has has 700 places, 604 transitions, 10162 flow [2022-11-20 10:57:12,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:12,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:12,259 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:12,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-20 10:57:12,259 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:57:12,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:12,259 INFO L85 PathProgramCache]: Analyzing trace with hash 607225479, now seen corresponding path program 20 times [2022-11-20 10:57:12,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:12,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668764635] [2022-11-20 10:57:12,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:12,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:12,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:12,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668764635] [2022-11-20 10:57:12,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668764635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:12,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:12,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:57:12,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143288655] [2022-11-20 10:57:12,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:12,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:57:12,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:12,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:57:12,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:57:12,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 220 [2022-11-20 10:57:12,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 700 places, 604 transitions, 10162 flow. Second operand has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:12,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:12,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 220 [2022-11-20 10:57:12,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:15,062 INFO L130 PetriNetUnfolder]: 1406/5148 cut-off events. [2022-11-20 10:57:15,062 INFO L131 PetriNetUnfolder]: For 81568/81587 co-relation queries the response was YES. [2022-11-20 10:57:15,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32447 conditions, 5148 events. 1406/5148 cut-off events. For 81568/81587 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 54414 event pairs, 474 based on Foata normal form. 2/4753 useless extension candidates. Maximal degree in co-relation 32235. Up to 1521 conditions per place. [2022-11-20 10:57:15,239 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 271 selfloop transitions, 189 changer transitions 22/649 dead transitions. [2022-11-20 10:57:15,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 649 transitions, 11490 flow [2022-11-20 10:57:15,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:57:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 10:57:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2960 transitions. [2022-11-20 10:57:15,242 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8409090909090909 [2022-11-20 10:57:15,242 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2960 transitions. [2022-11-20 10:57:15,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2960 transitions. [2022-11-20 10:57:15,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:15,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2960 transitions. [2022-11-20 10:57:15,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:15,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:15,247 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:15,247 INFO L175 Difference]: Start difference. First operand has 700 places, 604 transitions, 10162 flow. Second operand 16 states and 2960 transitions. [2022-11-20 10:57:15,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 649 transitions, 11490 flow [2022-11-20 10:57:16,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 649 transitions, 11316 flow, removed 51 selfloop flow, removed 3 redundant places. [2022-11-20 10:57:16,378 INFO L231 Difference]: Finished difference. Result has 717 places, 611 transitions, 10579 flow [2022-11-20 10:57:16,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=9992, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10579, PETRI_PLACES=717, PETRI_TRANSITIONS=611} [2022-11-20 10:57:16,380 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 515 predicate places. [2022-11-20 10:57:16,380 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 611 transitions, 10579 flow [2022-11-20 10:57:16,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 181.6) internal successors, (1816), 10 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:16,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:16,381 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:16,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 10:57:16,381 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:57:16,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash -506307202, now seen corresponding path program 1 times [2022-11-20 10:57:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:16,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783181716] [2022-11-20 10:57:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:16,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:16,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:16,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783181716] [2022-11-20 10:57:16,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783181716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:16,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:16,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:16,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942665608] [2022-11-20 10:57:16,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:16,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:16,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:16,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:16,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:16,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 220 [2022-11-20 10:57:16,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 611 transitions, 10579 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:16,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:16,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 220 [2022-11-20 10:57:16,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:17,724 INFO L130 PetriNetUnfolder]: 590/3996 cut-off events. [2022-11-20 10:57:17,725 INFO L131 PetriNetUnfolder]: For 61466/61504 co-relation queries the response was YES. [2022-11-20 10:57:17,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24580 conditions, 3996 events. 590/3996 cut-off events. For 61466/61504 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 41008 event pairs, 14 based on Foata normal form. 0/3922 useless extension candidates. Maximal degree in co-relation 24363. Up to 330 conditions per place. [2022-11-20 10:57:17,852 INFO L137 encePairwiseOnDemand]: 216/220 looper letters, 17 selfloop transitions, 2 changer transitions 1/618 dead transitions. [2022-11-20 10:57:17,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 618 transitions, 10640 flow [2022-11-20 10:57:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:17,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:57:17,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2022-11-20 10:57:17,854 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9287878787878788 [2022-11-20 10:57:17,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2022-11-20 10:57:17,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2022-11-20 10:57:17,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:17,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2022-11-20 10:57:17,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:17,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:17,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:17,856 INFO L175 Difference]: Start difference. First operand has 717 places, 611 transitions, 10579 flow. Second operand 3 states and 613 transitions. [2022-11-20 10:57:17,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 618 transitions, 10640 flow [2022-11-20 10:57:18,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 618 transitions, 10326 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-11-20 10:57:18,588 INFO L231 Difference]: Finished difference. Result has 714 places, 613 transitions, 10285 flow [2022-11-20 10:57:18,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=10265, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=10285, PETRI_PLACES=714, PETRI_TRANSITIONS=613} [2022-11-20 10:57:18,589 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 512 predicate places. [2022-11-20 10:57:18,589 INFO L495 AbstractCegarLoop]: Abstraction has has 714 places, 613 transitions, 10285 flow [2022-11-20 10:57:18,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:18,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:18,589 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:18,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-20 10:57:18,589 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:57:18,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:18,590 INFO L85 PathProgramCache]: Analyzing trace with hash -357576668, now seen corresponding path program 2 times [2022-11-20 10:57:18,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:18,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658190625] [2022-11-20 10:57:18,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:18,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:18,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:18,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:18,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658190625] [2022-11-20 10:57:18,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658190625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:18,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:18,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:18,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846292928] [2022-11-20 10:57:18,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:18,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:18,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:18,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:18,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:18,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 220 [2022-11-20 10:57:18,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 613 transitions, 10285 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:18,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:18,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 220 [2022-11-20 10:57:18,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:19,889 INFO L130 PetriNetUnfolder]: 587/3873 cut-off events. [2022-11-20 10:57:19,889 INFO L131 PetriNetUnfolder]: For 55946/56420 co-relation queries the response was YES. [2022-11-20 10:57:19,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23390 conditions, 3873 events. 587/3873 cut-off events. For 55946/56420 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 39525 event pairs, 10 based on Foata normal form. 8/3829 useless extension candidates. Maximal degree in co-relation 23174. Up to 318 conditions per place. [2022-11-20 10:57:19,989 INFO L137 encePairwiseOnDemand]: 214/220 looper letters, 15 selfloop transitions, 4 changer transitions 4/620 dead transitions. [2022-11-20 10:57:19,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 620 transitions, 10354 flow [2022-11-20 10:57:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:57:19,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2022-11-20 10:57:19,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9287878787878788 [2022-11-20 10:57:19,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2022-11-20 10:57:19,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2022-11-20 10:57:19,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:19,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2022-11-20 10:57:19,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:19,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:19,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:19,993 INFO L175 Difference]: Start difference. First operand has 714 places, 613 transitions, 10285 flow. Second operand 3 states and 613 transitions. [2022-11-20 10:57:19,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 620 transitions, 10354 flow [2022-11-20 10:57:20,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 620 transitions, 10352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:57:20,691 INFO L231 Difference]: Finished difference. Result has 717 places, 614 transitions, 10311 flow [2022-11-20 10:57:20,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=10283, PETRI_DIFFERENCE_MINUEND_PLACES=713, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=10311, PETRI_PLACES=717, PETRI_TRANSITIONS=614} [2022-11-20 10:57:20,692 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 515 predicate places. [2022-11-20 10:57:20,692 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 614 transitions, 10311 flow [2022-11-20 10:57:20,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:20,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:20,692 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:20,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 10:57:20,693 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:57:20,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash 778323887, now seen corresponding path program 1 times [2022-11-20 10:57:20,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:20,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528788089] [2022-11-20 10:57:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:20,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:22,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:22,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528788089] [2022-11-20 10:57:22,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528788089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:22,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:22,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-20 10:57:22,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670873044] [2022-11-20 10:57:22,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:22,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 10:57:22,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:22,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 10:57:22,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=866, Unknown=0, NotChecked=0, Total=930 [2022-11-20 10:57:22,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 220 [2022-11-20 10:57:22,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 614 transitions, 10311 flow. Second operand has 31 states, 31 states have (on average 134.29032258064515) internal successors, (4163), 31 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:22,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:22,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 220 [2022-11-20 10:57:22,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:58:42,599 INFO L130 PetriNetUnfolder]: 27573/62586 cut-off events. [2022-11-20 10:58:42,599 INFO L131 PetriNetUnfolder]: For 688505/688578 co-relation queries the response was YES. [2022-11-20 10:58:45,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229314 conditions, 62586 events. 27573/62586 cut-off events. For 688505/688578 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 677071 event pairs, 1260 based on Foata normal form. 3/60499 useless extension candidates. Maximal degree in co-relation 229097. Up to 6399 conditions per place. [2022-11-20 10:58:45,553 INFO L137 encePairwiseOnDemand]: 181/220 looper letters, 1605 selfloop transitions, 88 changer transitions 5164/6982 dead transitions. [2022-11-20 10:58:45,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 954 places, 6982 transitions, 136222 flow [2022-11-20 10:58:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2022-11-20 10:58:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2022-11-20 10:58:45,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 33316 transitions. [2022-11-20 10:58:45,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6362872421695951 [2022-11-20 10:58:45,575 INFO L72 ComplementDD]: Start complementDD. Operand 238 states and 33316 transitions. [2022-11-20 10:58:45,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 238 states and 33316 transitions. [2022-11-20 10:58:45,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:58:45,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 238 states and 33316 transitions. [2022-11-20 10:58:45,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 239 states, 238 states have (on average 139.98319327731093) internal successors, (33316), 238 states have internal predecessors, (33316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:45,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 239 states, 239 states have (on average 220.0) internal successors, (52580), 239 states have internal predecessors, (52580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:45,690 INFO L81 ComplementDD]: Finished complementDD. Result has 239 states, 239 states have (on average 220.0) internal successors, (52580), 239 states have internal predecessors, (52580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:45,691 INFO L175 Difference]: Start difference. First operand has 717 places, 614 transitions, 10311 flow. Second operand 238 states and 33316 transitions. [2022-11-20 10:58:45,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 954 places, 6982 transitions, 136222 flow [2022-11-20 10:58:48,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 6982 transitions, 136206 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-20 10:58:48,481 INFO L231 Difference]: Finished difference. Result has 1177 places, 691 transitions, 11534 flow [2022-11-20 10:58:48,483 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=10295, PETRI_DIFFERENCE_MINUEND_PLACES=714, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=238, PETRI_FLOW=11534, PETRI_PLACES=1177, PETRI_TRANSITIONS=691} [2022-11-20 10:58:48,484 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 975 predicate places. [2022-11-20 10:58:48,485 INFO L495 AbstractCegarLoop]: Abstraction has has 1177 places, 691 transitions, 11534 flow [2022-11-20 10:58:48,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 134.29032258064515) internal successors, (4163), 31 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:48,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:58:48,492 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:58:48,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-20 10:58:48,492 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 10:58:48,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:48,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2140110117, now seen corresponding path program 2 times [2022-11-20 10:58:48,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:48,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978569046] [2022-11-20 10:58:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:51,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:51,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:51,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978569046] [2022-11-20 10:58:51,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978569046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:58:51,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:58:51,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-20 10:58:51,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382969524] [2022-11-20 10:58:51,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:58:51,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 10:58:51,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:58:51,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 10:58:51,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=858, Unknown=0, NotChecked=0, Total=930 [2022-11-20 10:58:51,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 220 [2022-11-20 10:58:51,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1177 places, 691 transitions, 11534 flow. Second operand has 31 states, 31 states have (on average 134.29032258064515) internal successors, (4163), 31 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:51,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:58:51,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 220 [2022-11-20 10:58:51,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand