./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:51:01,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:51:01,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:51:01,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:51:01,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:51:01,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:51:01,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:51:01,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:51:01,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:51:01,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:51:01,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:51:01,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:51:01,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:51:01,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:51:01,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:51:01,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:51:01,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:51:01,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:51:01,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:51:01,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:51:01,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:51:01,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:51:01,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:51:01,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:51:01,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:51:01,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:51:01,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:51:01,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:51:01,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:51:01,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:51:01,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:51:01,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:51:01,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:51:01,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:51:01,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:51:01,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:51:01,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:51:01,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:51:01,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:51:01,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:51:01,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:51:01,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:51:01,888 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:51:01,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:51:01,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:51:01,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:51:01,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:51:01,893 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:51:01,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:51:01,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:51:01,895 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:51:01,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:51:01,896 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:51:01,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:51:01,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:51:01,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:51:01,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:51:01,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:51:01,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:51:01,898 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:51:01,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:51:01,899 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:51:01,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:51:01,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:51:01,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:51:01,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:51:01,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:51:01,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:51:01,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:51:01,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:51:01,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:51:01,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:51:01,903 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:51:01,904 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:51:01,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:51:01,904 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_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 [2022-11-16 12:51:02,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:51:02,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:51:02,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:51:02,301 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:51:02,302 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:51:02,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2022-11-16 12:51:02,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/data/a2e65342c/de316b4ba72c49c981866ab462ab8415/FLAG6d0690daa [2022-11-16 12:51:03,034 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:51:03,035 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2022-11-16 12:51:03,068 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/data/a2e65342c/de316b4ba72c49c981866ab462ab8415/FLAG6d0690daa [2022-11-16 12:51:03,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/data/a2e65342c/de316b4ba72c49c981866ab462ab8415 [2022-11-16 12:51:03,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:51:03,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:51:03,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:51:03,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:51:03,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:51:03,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:51:03" (1/1) ... [2022-11-16 12:51:03,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b88690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:03, skipping insertion in model container [2022-11-16 12:51:03,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:51:03" (1/1) ... [2022-11-16 12:51:03,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:51:03,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:51:03,601 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:51:04,381 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-11-16 12:51:04,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:51:04,435 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:51:04,452 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:51:04,509 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-11-16 12:51:04,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:51:04,624 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:51:04,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:04 WrapperNode [2022-11-16 12:51:04,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:51:04,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:51:04,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:51:04,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:51:04,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:04" (1/1) ... [2022-11-16 12:51:04,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:04" (1/1) ... [2022-11-16 12:51:04,712 INFO L138 Inliner]: procedures = 468, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-11-16 12:51:04,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:51:04,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:51:04,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:51:04,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:51:04,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:04" (1/1) ... [2022-11-16 12:51:04,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:04" (1/1) ... [2022-11-16 12:51:04,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:04" (1/1) ... [2022-11-16 12:51:04,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:04" (1/1) ... [2022-11-16 12:51:04,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:04" (1/1) ... [2022-11-16 12:51:04,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:04" (1/1) ... [2022-11-16 12:51:04,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:04" (1/1) ... [2022-11-16 12:51:04,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:04" (1/1) ... [2022-11-16 12:51:04,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:51:04,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:51:04,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:51:04,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:51:04,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:04" (1/1) ... [2022-11-16 12:51:04,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:51:04,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:51:04,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:51:04,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d1dde93-7ddc-4e2b-8320-eb2ca278c7d6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:51:04,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:51:04,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:51:04,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:51:04,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:51:04,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:51:04,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:51:04,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:51:04,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:51:04,882 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-16 12:51:04,882 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-16 12:51:04,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:51:04,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:51:04,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:51:04,885 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:51:05,225 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:51:05,227 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:51:05,644 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:51:05,666 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:51:05,666 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:51:05,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:51:05 BoogieIcfgContainer [2022-11-16 12:51:05,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:51:05,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:51:05,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:51:05,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:51:05,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:51:03" (1/3) ... [2022-11-16 12:51:05,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129b2d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:51:05, skipping insertion in model container [2022-11-16 12:51:05,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:51:04" (2/3) ... [2022-11-16 12:51:05,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129b2d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:51:05, skipping insertion in model container [2022-11-16 12:51:05,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:51:05" (3/3) ... [2022-11-16 12:51:05,680 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2022-11-16 12:51:05,690 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:51:05,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:51:05,702 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 12:51:05,702 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:51:05,784 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:51:05,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 186 transitions, 388 flow [2022-11-16 12:51:05,925 INFO L130 PetriNetUnfolder]: 10/231 cut-off events. [2022-11-16 12:51:05,925 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:51:05,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 231 events. 10/231 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 334 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 137. Up to 4 conditions per place. [2022-11-16 12:51:05,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 186 transitions, 388 flow [2022-11-16 12:51:05,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 172 transitions, 356 flow [2022-11-16 12:51:05,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:51:05,954 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;@43cd49f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:51:05,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 12:51:05,966 INFO L130 PetriNetUnfolder]: 0/45 cut-off events. [2022-11-16 12:51:05,966 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:51:05,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:05,967 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] [2022-11-16 12:51:05,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:05,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:05,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1465795188, now seen corresponding path program 1 times [2022-11-16 12:51:05,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:05,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995052257] [2022-11-16 12:51:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:05,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:06,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:06,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995052257] [2022-11-16 12:51:06,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995052257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:06,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:06,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:51:06,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804753225] [2022-11-16 12:51:06,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:06,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:51:06,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:06,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:51:06,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:51:06,845 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2022-11-16 12:51:06,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 172 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:06,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:06,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2022-11-16 12:51:06,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:07,499 INFO L130 PetriNetUnfolder]: 361/968 cut-off events. [2022-11-16 12:51:07,499 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-16 12:51:07,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 968 events. 361/968 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5119 event pairs, 216 based on Foata normal form. 20/935 useless extension candidates. Maximal degree in co-relation 1412. Up to 397 conditions per place. [2022-11-16 12:51:07,516 INFO L137 encePairwiseOnDemand]: 164/186 looper letters, 53 selfloop transitions, 17 changer transitions 1/168 dead transitions. [2022-11-16 12:51:07,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 168 transitions, 490 flow [2022-11-16 12:51:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:51:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:51:07,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1057 transitions. [2022-11-16 12:51:07,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6314217443249701 [2022-11-16 12:51:07,548 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1057 transitions. [2022-11-16 12:51:07,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1057 transitions. [2022-11-16 12:51:07,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:07,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1057 transitions. [2022-11-16 12:51:07,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.44444444444444) internal successors, (1057), 9 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:07,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:07,581 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:07,583 INFO L175 Difference]: Start difference. First operand has 172 places, 172 transitions, 356 flow. Second operand 9 states and 1057 transitions. [2022-11-16 12:51:07,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 168 transitions, 490 flow [2022-11-16 12:51:07,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 168 transitions, 482 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:51:07,598 INFO L231 Difference]: Finished difference. Result has 170 places, 161 transitions, 367 flow [2022-11-16 12:51:07,600 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=367, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2022-11-16 12:51:07,607 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, -2 predicate places. [2022-11-16 12:51:07,608 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 367 flow [2022-11-16 12:51:07,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:07,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:07,609 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] [2022-11-16 12:51:07,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:51:07,610 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:07,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash 193261387, now seen corresponding path program 1 times [2022-11-16 12:51:07,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:07,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671009451] [2022-11-16 12:51:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:07,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:08,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:08,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671009451] [2022-11-16 12:51:08,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671009451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:08,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:08,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:51:08,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866073616] [2022-11-16 12:51:08,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:08,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:51:08,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:08,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:51:08,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:51:08,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2022-11-16 12:51:08,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 161 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:08,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:08,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2022-11-16 12:51:08,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:08,472 INFO L130 PetriNetUnfolder]: 361/972 cut-off events. [2022-11-16 12:51:08,472 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-16 12:51:08,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 972 events. 361/972 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5159 event pairs, 120 based on Foata normal form. 1/940 useless extension candidates. Maximal degree in co-relation 695. Up to 261 conditions per place. [2022-11-16 12:51:08,481 INFO L137 encePairwiseOnDemand]: 167/186 looper letters, 61 selfloop transitions, 18 changer transitions 1/176 dead transitions. [2022-11-16 12:51:08,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 176 transitions, 559 flow [2022-11-16 12:51:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:51:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:51:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1171 transitions. [2022-11-16 12:51:08,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6295698924731182 [2022-11-16 12:51:08,486 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1171 transitions. [2022-11-16 12:51:08,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1171 transitions. [2022-11-16 12:51:08,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:08,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1171 transitions. [2022-11-16 12:51:08,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.1) internal successors, (1171), 10 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:08,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:08,497 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:08,497 INFO L175 Difference]: Start difference. First operand has 170 places, 161 transitions, 367 flow. Second operand 10 states and 1171 transitions. [2022-11-16 12:51:08,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 176 transitions, 559 flow [2022-11-16 12:51:08,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 176 transitions, 530 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 12:51:08,509 INFO L231 Difference]: Finished difference. Result has 171 places, 160 transitions, 378 flow [2022-11-16 12:51:08,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=378, PETRI_PLACES=171, PETRI_TRANSITIONS=160} [2022-11-16 12:51:08,510 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, -1 predicate places. [2022-11-16 12:51:08,510 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 160 transitions, 378 flow [2022-11-16 12:51:08,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:08,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:08,512 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] [2022-11-16 12:51:08,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:51:08,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:08,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1503918419, now seen corresponding path program 1 times [2022-11-16 12:51:08,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:08,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359023678] [2022-11-16 12:51:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:08,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:08,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:08,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359023678] [2022-11-16 12:51:08,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359023678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:08,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:08,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:51:08,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131635832] [2022-11-16 12:51:08,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:08,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:51:08,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:08,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:51:08,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:51:08,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2022-11-16 12:51:08,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 160 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:08,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:08,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2022-11-16 12:51:08,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:09,814 INFO L130 PetriNetUnfolder]: 832/1931 cut-off events. [2022-11-16 12:51:09,814 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-11-16 12:51:09,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3674 conditions, 1931 events. 832/1931 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11832 event pairs, 169 based on Foata normal form. 32/1930 useless extension candidates. Maximal degree in co-relation 968. Up to 499 conditions per place. [2022-11-16 12:51:09,830 INFO L137 encePairwiseOnDemand]: 165/186 looper letters, 100 selfloop transitions, 49 changer transitions 0/245 dead transitions. [2022-11-16 12:51:09,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 245 transitions, 862 flow [2022-11-16 12:51:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:51:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:51:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1540 transitions. [2022-11-16 12:51:09,838 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6368899917287014 [2022-11-16 12:51:09,838 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1540 transitions. [2022-11-16 12:51:09,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1540 transitions. [2022-11-16 12:51:09,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:09,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1540 transitions. [2022-11-16 12:51:09,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.46153846153847) internal successors, (1540), 13 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:09,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:09,858 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:09,859 INFO L175 Difference]: Start difference. First operand has 171 places, 160 transitions, 378 flow. Second operand 13 states and 1540 transitions. [2022-11-16 12:51:09,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 245 transitions, 862 flow [2022-11-16 12:51:09,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 245 transitions, 816 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 12:51:09,873 INFO L231 Difference]: Finished difference. Result has 183 places, 197 transitions, 648 flow [2022-11-16 12:51:09,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=648, PETRI_PLACES=183, PETRI_TRANSITIONS=197} [2022-11-16 12:51:09,876 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 11 predicate places. [2022-11-16 12:51:09,876 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 197 transitions, 648 flow [2022-11-16 12:51:09,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:09,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:09,878 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:09,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:51:09,878 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1628560954, now seen corresponding path program 1 times [2022-11-16 12:51:09,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:09,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182264898] [2022-11-16 12:51:09,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:09,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:10,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:10,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182264898] [2022-11-16 12:51:10,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182264898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:10,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:10,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:51:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917465408] [2022-11-16 12:51:10,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:10,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:51:10,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:10,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:51:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:51:10,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2022-11-16 12:51:10,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 648 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:10,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:10,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2022-11-16 12:51:10,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:11,261 INFO L130 PetriNetUnfolder]: 1085/2496 cut-off events. [2022-11-16 12:51:11,261 INFO L131 PetriNetUnfolder]: For 10877/10945 co-relation queries the response was YES. [2022-11-16 12:51:11,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8992 conditions, 2496 events. 1085/2496 cut-off events. For 10877/10945 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16657 event pairs, 218 based on Foata normal form. 47/2510 useless extension candidates. Maximal degree in co-relation 7714. Up to 732 conditions per place. [2022-11-16 12:51:11,289 INFO L137 encePairwiseOnDemand]: 167/186 looper letters, 74 selfloop transitions, 48 changer transitions 69/286 dead transitions. [2022-11-16 12:51:11,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 286 transitions, 1732 flow [2022-11-16 12:51:11,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:51:11,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:51:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1307 transitions. [2022-11-16 12:51:11,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6388074291300098 [2022-11-16 12:51:11,294 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1307 transitions. [2022-11-16 12:51:11,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1307 transitions. [2022-11-16 12:51:11,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:11,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1307 transitions. [2022-11-16 12:51:11,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 118.81818181818181) internal successors, (1307), 11 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:11,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:11,305 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:11,306 INFO L175 Difference]: Start difference. First operand has 183 places, 197 transitions, 648 flow. Second operand 11 states and 1307 transitions. [2022-11-16 12:51:11,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 286 transitions, 1732 flow [2022-11-16 12:51:11,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 286 transitions, 1732 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:51:11,331 INFO L231 Difference]: Finished difference. Result has 201 places, 203 transitions, 961 flow [2022-11-16 12:51:11,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=961, PETRI_PLACES=201, PETRI_TRANSITIONS=203} [2022-11-16 12:51:11,333 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 29 predicate places. [2022-11-16 12:51:11,333 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 203 transitions, 961 flow [2022-11-16 12:51:11,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:11,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:11,334 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] [2022-11-16 12:51:11,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:51:11,335 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:11,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:11,336 INFO L85 PathProgramCache]: Analyzing trace with hash -377941150, now seen corresponding path program 1 times [2022-11-16 12:51:11,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:11,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157387850] [2022-11-16 12:51:11,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:11,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:11,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:11,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157387850] [2022-11-16 12:51:11,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157387850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:11,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:11,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:51:11,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715262640] [2022-11-16 12:51:11,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:11,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:51:11,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:11,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:51:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:51:11,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 186 [2022-11-16 12:51:11,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 203 transitions, 961 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:11,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:11,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 186 [2022-11-16 12:51:11,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:11,692 INFO L130 PetriNetUnfolder]: 47/289 cut-off events. [2022-11-16 12:51:11,692 INFO L131 PetriNetUnfolder]: For 791/871 co-relation queries the response was YES. [2022-11-16 12:51:11,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 289 events. 47/289 cut-off events. For 791/871 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 963 event pairs, 11 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 633. Up to 31 conditions per place. [2022-11-16 12:51:11,696 INFO L137 encePairwiseOnDemand]: 181/186 looper letters, 19 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2022-11-16 12:51:11,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 139 transitions, 456 flow [2022-11-16 12:51:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:51:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:51:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 966 transitions. [2022-11-16 12:51:11,700 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8655913978494624 [2022-11-16 12:51:11,701 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 966 transitions. [2022-11-16 12:51:11,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 966 transitions. [2022-11-16 12:51:11,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:11,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 966 transitions. [2022-11-16 12:51:11,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:11,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:11,709 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:11,710 INFO L175 Difference]: Start difference. First operand has 201 places, 203 transitions, 961 flow. Second operand 6 states and 966 transitions. [2022-11-16 12:51:11,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 139 transitions, 456 flow [2022-11-16 12:51:11,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 139 transitions, 336 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-11-16 12:51:11,716 INFO L231 Difference]: Finished difference. Result has 144 places, 131 transitions, 282 flow [2022-11-16 12:51:11,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=144, PETRI_TRANSITIONS=131} [2022-11-16 12:51:11,718 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, -28 predicate places. [2022-11-16 12:51:11,718 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 131 transitions, 282 flow [2022-11-16 12:51:11,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:11,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:11,719 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] [2022-11-16 12:51:11,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:51:11,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:11,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash -836619751, now seen corresponding path program 1 times [2022-11-16 12:51:11,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:11,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105484205] [2022-11-16 12:51:11,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:11,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:15,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:15,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105484205] [2022-11-16 12:51:15,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105484205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:15,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:15,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 12:51:15,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905877785] [2022-11-16 12:51:15,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:15,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:51:15,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:15,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:51:15,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:51:15,553 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-16 12:51:15,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 131 transitions, 282 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:15,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:15,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-16 12:51:15,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:18,703 INFO L130 PetriNetUnfolder]: 600/1450 cut-off events. [2022-11-16 12:51:18,704 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2022-11-16 12:51:18,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 1450 events. 600/1450 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8018 event pairs, 109 based on Foata normal form. 0/1409 useless extension candidates. Maximal degree in co-relation 2899. Up to 269 conditions per place. [2022-11-16 12:51:18,713 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 142 selfloop transitions, 42 changer transitions 0/247 dead transitions. [2022-11-16 12:51:18,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 247 transitions, 927 flow [2022-11-16 12:51:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 12:51:18,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-16 12:51:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2448 transitions. [2022-11-16 12:51:18,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5062034739454094 [2022-11-16 12:51:18,721 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2448 transitions. [2022-11-16 12:51:18,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2448 transitions. [2022-11-16 12:51:18,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:18,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2448 transitions. [2022-11-16 12:51:18,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.15384615384616) internal successors, (2448), 26 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:18,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:18,740 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:18,741 INFO L175 Difference]: Start difference. First operand has 144 places, 131 transitions, 282 flow. Second operand 26 states and 2448 transitions. [2022-11-16 12:51:18,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 247 transitions, 927 flow [2022-11-16 12:51:18,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 247 transitions, 920 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:51:18,747 INFO L231 Difference]: Finished difference. Result has 174 places, 161 transitions, 514 flow [2022-11-16 12:51:18,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=514, PETRI_PLACES=174, PETRI_TRANSITIONS=161} [2022-11-16 12:51:18,748 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 2 predicate places. [2022-11-16 12:51:18,748 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 161 transitions, 514 flow [2022-11-16 12:51:18,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:18,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:18,750 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] [2022-11-16 12:51:18,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:51:18,750 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:18,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:18,751 INFO L85 PathProgramCache]: Analyzing trace with hash -769890853, now seen corresponding path program 2 times [2022-11-16 12:51:18,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:18,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831567581] [2022-11-16 12:51:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:18,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:20,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:20,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831567581] [2022-11-16 12:51:20,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831567581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:20,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:20,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:51:20,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781304936] [2022-11-16 12:51:20,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:20,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:51:20,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:20,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:51:20,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:51:20,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-11-16 12:51:20,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 161 transitions, 514 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:20,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:20,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-11-16 12:51:20,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:21,904 INFO L130 PetriNetUnfolder]: 535/1499 cut-off events. [2022-11-16 12:51:21,905 INFO L131 PetriNetUnfolder]: For 1104/1115 co-relation queries the response was YES. [2022-11-16 12:51:21,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 1499 events. 535/1499 cut-off events. For 1104/1115 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9140 event pairs, 160 based on Foata normal form. 4/1466 useless extension candidates. Maximal degree in co-relation 3653. Up to 310 conditions per place. [2022-11-16 12:51:21,917 INFO L137 encePairwiseOnDemand]: 161/186 looper letters, 135 selfloop transitions, 51 changer transitions 0/253 dead transitions. [2022-11-16 12:51:21,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 253 transitions, 1255 flow [2022-11-16 12:51:21,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:51:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:51:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1847 transitions. [2022-11-16 12:51:21,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5226372382569326 [2022-11-16 12:51:21,925 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1847 transitions. [2022-11-16 12:51:21,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1847 transitions. [2022-11-16 12:51:21,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:21,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1847 transitions. [2022-11-16 12:51:21,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.21052631578948) internal successors, (1847), 19 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:21,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:21,940 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:21,941 INFO L175 Difference]: Start difference. First operand has 174 places, 161 transitions, 514 flow. Second operand 19 states and 1847 transitions. [2022-11-16 12:51:21,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 253 transitions, 1255 flow [2022-11-16 12:51:21,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 253 transitions, 1239 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:51:21,950 INFO L231 Difference]: Finished difference. Result has 194 places, 184 transitions, 822 flow [2022-11-16 12:51:21,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=822, PETRI_PLACES=194, PETRI_TRANSITIONS=184} [2022-11-16 12:51:21,952 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 22 predicate places. [2022-11-16 12:51:21,952 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 184 transitions, 822 flow [2022-11-16 12:51:21,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:21,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:21,954 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] [2022-11-16 12:51:21,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:51:21,954 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:21,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:21,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1806083005, now seen corresponding path program 3 times [2022-11-16 12:51:21,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:21,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838470609] [2022-11-16 12:51:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:21,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:23,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:23,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838470609] [2022-11-16 12:51:23,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838470609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:23,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:23,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:51:23,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737777940] [2022-11-16 12:51:23,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:23,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:51:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:23,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:51:23,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:51:23,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-11-16 12:51:23,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 184 transitions, 822 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:23,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:23,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-11-16 12:51:23,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:25,192 INFO L130 PetriNetUnfolder]: 638/1839 cut-off events. [2022-11-16 12:51:25,193 INFO L131 PetriNetUnfolder]: For 2580/2591 co-relation queries the response was YES. [2022-11-16 12:51:25,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5022 conditions, 1839 events. 638/1839 cut-off events. For 2580/2591 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 12233 event pairs, 272 based on Foata normal form. 4/1796 useless extension candidates. Maximal degree in co-relation 4997. Up to 532 conditions per place. [2022-11-16 12:51:25,212 INFO L137 encePairwiseOnDemand]: 163/186 looper letters, 148 selfloop transitions, 50 changer transitions 0/265 dead transitions. [2022-11-16 12:51:25,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 265 transitions, 1632 flow [2022-11-16 12:51:25,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:51:25,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:51:25,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1837 transitions. [2022-11-16 12:51:25,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.519807583474816 [2022-11-16 12:51:25,218 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1837 transitions. [2022-11-16 12:51:25,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1837 transitions. [2022-11-16 12:51:25,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:25,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1837 transitions. [2022-11-16 12:51:25,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 96.6842105263158) internal successors, (1837), 19 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:25,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:25,233 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:25,233 INFO L175 Difference]: Start difference. First operand has 194 places, 184 transitions, 822 flow. Second operand 19 states and 1837 transitions. [2022-11-16 12:51:25,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 265 transitions, 1632 flow [2022-11-16 12:51:25,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 265 transitions, 1603 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-16 12:51:25,310 INFO L231 Difference]: Finished difference. Result has 214 places, 203 transitions, 1130 flow [2022-11-16 12:51:25,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1130, PETRI_PLACES=214, PETRI_TRANSITIONS=203} [2022-11-16 12:51:25,312 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 42 predicate places. [2022-11-16 12:51:25,312 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 203 transitions, 1130 flow [2022-11-16 12:51:25,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:25,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:25,314 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] [2022-11-16 12:51:25,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:51:25,314 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:25,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:25,315 INFO L85 PathProgramCache]: Analyzing trace with hash -318124757, now seen corresponding path program 4 times [2022-11-16 12:51:25,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:25,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025969286] [2022-11-16 12:51:25,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:25,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:26,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:26,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025969286] [2022-11-16 12:51:26,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025969286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:26,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:26,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:51:26,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403964957] [2022-11-16 12:51:26,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:26,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:51:26,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:26,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:51:26,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:51:26,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-11-16 12:51:26,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 203 transitions, 1130 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:26,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:26,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-11-16 12:51:26,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:28,308 INFO L130 PetriNetUnfolder]: 639/1888 cut-off events. [2022-11-16 12:51:28,309 INFO L131 PetriNetUnfolder]: For 3720/3727 co-relation queries the response was YES. [2022-11-16 12:51:28,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5455 conditions, 1888 events. 639/1888 cut-off events. For 3720/3727 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 12634 event pairs, 341 based on Foata normal form. 4/1842 useless extension candidates. Maximal degree in co-relation 5421. Up to 667 conditions per place. [2022-11-16 12:51:28,327 INFO L137 encePairwiseOnDemand]: 164/186 looper letters, 140 selfloop transitions, 55 changer transitions 0/262 dead transitions. [2022-11-16 12:51:28,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 262 transitions, 1848 flow [2022-11-16 12:51:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:51:28,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:51:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1728 transitions. [2022-11-16 12:51:28,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2022-11-16 12:51:28,332 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1728 transitions. [2022-11-16 12:51:28,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1728 transitions. [2022-11-16 12:51:28,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:28,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1728 transitions. [2022-11-16 12:51:28,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 96.0) internal successors, (1728), 18 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:28,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:28,354 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:28,355 INFO L175 Difference]: Start difference. First operand has 214 places, 203 transitions, 1130 flow. Second operand 18 states and 1728 transitions. [2022-11-16 12:51:28,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 262 transitions, 1848 flow [2022-11-16 12:51:28,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 262 transitions, 1811 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 12:51:28,377 INFO L231 Difference]: Finished difference. Result has 236 places, 217 transitions, 1415 flow [2022-11-16 12:51:28,378 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1415, PETRI_PLACES=236, PETRI_TRANSITIONS=217} [2022-11-16 12:51:28,379 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 64 predicate places. [2022-11-16 12:51:28,379 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 217 transitions, 1415 flow [2022-11-16 12:51:28,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:28,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:28,381 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] [2022-11-16 12:51:28,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:51:28,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:28,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash 426904445, now seen corresponding path program 5 times [2022-11-16 12:51:28,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:28,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115749831] [2022-11-16 12:51:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:28,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:30,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:30,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115749831] [2022-11-16 12:51:30,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115749831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:30,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:30,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:51:30,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106733579] [2022-11-16 12:51:30,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:30,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:51:30,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:30,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:51:30,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:51:30,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-16 12:51:30,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 217 transitions, 1415 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:30,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:30,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-16 12:51:30,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:34,078 INFO L130 PetriNetUnfolder]: 1553/4264 cut-off events. [2022-11-16 12:51:34,078 INFO L131 PetriNetUnfolder]: For 12386/12406 co-relation queries the response was YES. [2022-11-16 12:51:34,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13477 conditions, 4264 events. 1553/4264 cut-off events. For 12386/12406 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 35096 event pairs, 423 based on Foata normal form. 16/4157 useless extension candidates. Maximal degree in co-relation 13432. Up to 1076 conditions per place. [2022-11-16 12:51:34,151 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 264 selfloop transitions, 130 changer transitions 0/457 dead transitions. [2022-11-16 12:51:34,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 457 transitions, 4423 flow [2022-11-16 12:51:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 12:51:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-16 12:51:34,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2450 transitions. [2022-11-16 12:51:34,157 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5066170388751033 [2022-11-16 12:51:34,157 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2450 transitions. [2022-11-16 12:51:34,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2450 transitions. [2022-11-16 12:51:34,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:34,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2450 transitions. [2022-11-16 12:51:34,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.23076923076923) internal successors, (2450), 26 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:34,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:34,174 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:34,175 INFO L175 Difference]: Start difference. First operand has 236 places, 217 transitions, 1415 flow. Second operand 26 states and 2450 transitions. [2022-11-16 12:51:34,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 457 transitions, 4423 flow [2022-11-16 12:51:34,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 457 transitions, 4318 flow, removed 46 selfloop flow, removed 5 redundant places. [2022-11-16 12:51:34,259 INFO L231 Difference]: Finished difference. Result has 272 places, 317 transitions, 3031 flow [2022-11-16 12:51:34,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3031, PETRI_PLACES=272, PETRI_TRANSITIONS=317} [2022-11-16 12:51:34,260 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 100 predicate places. [2022-11-16 12:51:34,260 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 317 transitions, 3031 flow [2022-11-16 12:51:34,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:34,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:34,261 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] [2022-11-16 12:51:34,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:51:34,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:34,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:34,263 INFO L85 PathProgramCache]: Analyzing trace with hash 213848133, now seen corresponding path program 6 times [2022-11-16 12:51:34,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:34,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636045750] [2022-11-16 12:51:34,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:34,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:35,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:35,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636045750] [2022-11-16 12:51:35,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636045750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:35,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:35,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:51:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501334227] [2022-11-16 12:51:35,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:35,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:51:35,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:51:35,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:51:35,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-11-16 12:51:35,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 317 transitions, 3031 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:35,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:35,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-11-16 12:51:35,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:37,624 INFO L130 PetriNetUnfolder]: 1581/5024 cut-off events. [2022-11-16 12:51:37,624 INFO L131 PetriNetUnfolder]: For 22554/22720 co-relation queries the response was YES. [2022-11-16 12:51:37,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17741 conditions, 5024 events. 1581/5024 cut-off events. For 22554/22720 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 45882 event pairs, 441 based on Foata normal form. 92/5002 useless extension candidates. Maximal degree in co-relation 17681. Up to 1055 conditions per place. [2022-11-16 12:51:37,709 INFO L137 encePairwiseOnDemand]: 161/186 looper letters, 290 selfloop transitions, 168 changer transitions 0/529 dead transitions. [2022-11-16 12:51:37,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 529 transitions, 6302 flow [2022-11-16 12:51:37,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:51:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:51:37,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1844 transitions. [2022-11-16 12:51:37,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5217883418222977 [2022-11-16 12:51:37,718 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1844 transitions. [2022-11-16 12:51:37,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1844 transitions. [2022-11-16 12:51:37,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:37,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1844 transitions. [2022-11-16 12:51:37,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.05263157894737) internal successors, (1844), 19 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:37,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:37,738 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:37,739 INFO L175 Difference]: Start difference. First operand has 272 places, 317 transitions, 3031 flow. Second operand 19 states and 1844 transitions. [2022-11-16 12:51:37,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 529 transitions, 6302 flow [2022-11-16 12:51:37,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 529 transitions, 6218 flow, removed 31 selfloop flow, removed 6 redundant places. [2022-11-16 12:51:37,877 INFO L231 Difference]: Finished difference. Result has 293 places, 392 transitions, 4714 flow [2022-11-16 12:51:37,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4714, PETRI_PLACES=293, PETRI_TRANSITIONS=392} [2022-11-16 12:51:37,879 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 121 predicate places. [2022-11-16 12:51:37,879 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 392 transitions, 4714 flow [2022-11-16 12:51:37,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:37,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:37,880 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] [2022-11-16 12:51:37,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:51:37,880 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:37,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:37,881 INFO L85 PathProgramCache]: Analyzing trace with hash 414212875, now seen corresponding path program 7 times [2022-11-16 12:51:37,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:37,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420629899] [2022-11-16 12:51:37,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:37,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:39,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:39,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:39,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420629899] [2022-11-16 12:51:39,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420629899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:39,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:39,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:51:39,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104696568] [2022-11-16 12:51:39,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:39,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:51:39,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:39,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:51:39,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:51:39,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-16 12:51:39,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 392 transitions, 4714 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:39,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:39,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-16 12:51:39,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:43,594 INFO L130 PetriNetUnfolder]: 2334/7023 cut-off events. [2022-11-16 12:51:43,595 INFO L131 PetriNetUnfolder]: For 37207/37318 co-relation queries the response was YES. [2022-11-16 12:51:43,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27173 conditions, 7023 events. 2334/7023 cut-off events. For 37207/37318 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 67918 event pairs, 597 based on Foata normal form. 45/6943 useless extension candidates. Maximal degree in co-relation 27103. Up to 2059 conditions per place. [2022-11-16 12:51:43,689 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 314 selfloop transitions, 201 changer transitions 0/578 dead transitions. [2022-11-16 12:51:43,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 578 transitions, 7940 flow [2022-11-16 12:51:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:51:43,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:51:43,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2072 transitions. [2022-11-16 12:51:43,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5063538611925709 [2022-11-16 12:51:43,695 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2072 transitions. [2022-11-16 12:51:43,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2072 transitions. [2022-11-16 12:51:43,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:43,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2072 transitions. [2022-11-16 12:51:43,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.18181818181819) internal successors, (2072), 22 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:43,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 186.0) internal successors, (4278), 23 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:43,709 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 186.0) internal successors, (4278), 23 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:43,709 INFO L175 Difference]: Start difference. First operand has 293 places, 392 transitions, 4714 flow. Second operand 22 states and 2072 transitions. [2022-11-16 12:51:43,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 578 transitions, 7940 flow [2022-11-16 12:51:43,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 578 transitions, 7836 flow, removed 41 selfloop flow, removed 6 redundant places. [2022-11-16 12:51:43,998 INFO L231 Difference]: Finished difference. Result has 319 places, 471 transitions, 6641 flow [2022-11-16 12:51:43,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6641, PETRI_PLACES=319, PETRI_TRANSITIONS=471} [2022-11-16 12:51:44,001 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 147 predicate places. [2022-11-16 12:51:44,002 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 471 transitions, 6641 flow [2022-11-16 12:51:44,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:44,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:44,003 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] [2022-11-16 12:51:44,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:51:44,003 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:44,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:44,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1885893633, now seen corresponding path program 8 times [2022-11-16 12:51:44,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:44,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099056467] [2022-11-16 12:51:44,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:44,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:45,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:45,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099056467] [2022-11-16 12:51:45,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099056467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:45,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:45,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:51:45,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344516165] [2022-11-16 12:51:45,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:45,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:51:45,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:45,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:51:45,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:51:45,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-11-16 12:51:45,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 471 transitions, 6641 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:45,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:45,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-11-16 12:51:45,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:48,905 INFO L130 PetriNetUnfolder]: 2307/7839 cut-off events. [2022-11-16 12:51:48,906 INFO L131 PetriNetUnfolder]: For 54434/54750 co-relation queries the response was YES. [2022-11-16 12:51:48,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31433 conditions, 7839 events. 2307/7839 cut-off events. For 54434/54750 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 81066 event pairs, 1112 based on Foata normal form. 225/7891 useless extension candidates. Maximal degree in co-relation 31352. Up to 2368 conditions per place. [2022-11-16 12:51:48,998 INFO L137 encePairwiseOnDemand]: 163/186 looper letters, 379 selfloop transitions, 223 changer transitions 0/676 dead transitions. [2022-11-16 12:51:48,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 676 transitions, 10619 flow [2022-11-16 12:51:48,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:51:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:51:49,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1836 transitions. [2022-11-16 12:51:49,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5195246179966044 [2022-11-16 12:51:49,003 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1836 transitions. [2022-11-16 12:51:49,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1836 transitions. [2022-11-16 12:51:49,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:49,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1836 transitions. [2022-11-16 12:51:49,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 96.63157894736842) internal successors, (1836), 19 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:49,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:49,015 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:49,015 INFO L175 Difference]: Start difference. First operand has 319 places, 471 transitions, 6641 flow. Second operand 19 states and 1836 transitions. [2022-11-16 12:51:49,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 676 transitions, 10619 flow [2022-11-16 12:51:49,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 676 transitions, 10519 flow, removed 37 selfloop flow, removed 7 redundant places. [2022-11-16 12:51:49,420 INFO L231 Difference]: Finished difference. Result has 339 places, 540 transitions, 8604 flow [2022-11-16 12:51:49,421 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=6553, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8604, PETRI_PLACES=339, PETRI_TRANSITIONS=540} [2022-11-16 12:51:49,422 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 167 predicate places. [2022-11-16 12:51:49,422 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 540 transitions, 8604 flow [2022-11-16 12:51:49,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:49,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:49,423 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] [2022-11-16 12:51:49,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:51:49,424 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:49,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:49,424 INFO L85 PathProgramCache]: Analyzing trace with hash -32776951, now seen corresponding path program 9 times [2022-11-16 12:51:49,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:49,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424032944] [2022-11-16 12:51:49,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:49,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:51,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:51,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424032944] [2022-11-16 12:51:51,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424032944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:51,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:51,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:51:51,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308876004] [2022-11-16 12:51:51,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:51,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:51:51,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:51,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:51:51,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:51:51,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-16 12:51:51,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 540 transitions, 8604 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:51,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:51,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-16 12:51:51,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:57,644 INFO L130 PetriNetUnfolder]: 3598/11107 cut-off events. [2022-11-16 12:51:57,644 INFO L131 PetriNetUnfolder]: For 81305/81437 co-relation queries the response was YES. [2022-11-16 12:51:57,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47034 conditions, 11107 events. 3598/11107 cut-off events. For 81305/81437 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 119550 event pairs, 897 based on Foata normal form. 64/11004 useless extension candidates. Maximal degree in co-relation 46943. Up to 2710 conditions per place. [2022-11-16 12:51:57,845 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 417 selfloop transitions, 287 changer transitions 0/767 dead transitions. [2022-11-16 12:51:57,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 767 transitions, 13115 flow [2022-11-16 12:51:57,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:51:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-16 12:51:57,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2360 transitions. [2022-11-16 12:51:57,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5075268817204301 [2022-11-16 12:51:57,850 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2360 transitions. [2022-11-16 12:51:57,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2360 transitions. [2022-11-16 12:51:57,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:57,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2360 transitions. [2022-11-16 12:51:57,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 94.4) internal successors, (2360), 25 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:57,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:57,865 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:57,866 INFO L175 Difference]: Start difference. First operand has 339 places, 540 transitions, 8604 flow. Second operand 25 states and 2360 transitions. [2022-11-16 12:51:57,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 767 transitions, 13115 flow [2022-11-16 12:51:58,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 767 transitions, 12925 flow, removed 87 selfloop flow, removed 5 redundant places. [2022-11-16 12:51:58,698 INFO L231 Difference]: Finished difference. Result has 374 places, 633 transitions, 11333 flow [2022-11-16 12:51:58,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=8486, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11333, PETRI_PLACES=374, PETRI_TRANSITIONS=633} [2022-11-16 12:51:58,699 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 202 predicate places. [2022-11-16 12:51:58,699 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 633 transitions, 11333 flow [2022-11-16 12:51:58,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:58,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:58,701 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] [2022-11-16 12:51:58,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:51:58,701 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:51:58,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:58,702 INFO L85 PathProgramCache]: Analyzing trace with hash 848283153, now seen corresponding path program 10 times [2022-11-16 12:51:58,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:58,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772005878] [2022-11-16 12:51:58,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:58,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:00,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:00,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772005878] [2022-11-16 12:52:00,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772005878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:00,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:00,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 12:52:00,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583115027] [2022-11-16 12:52:00,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:00,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:52:00,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:00,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:52:00,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:52:00,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-16 12:52:00,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 633 transitions, 11333 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:00,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:52:00,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-16 12:52:00,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:52:08,117 INFO L130 PetriNetUnfolder]: 4082/12635 cut-off events. [2022-11-16 12:52:08,117 INFO L131 PetriNetUnfolder]: For 116506/116656 co-relation queries the response was YES. [2022-11-16 12:52:08,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56996 conditions, 12635 events. 4082/12635 cut-off events. For 116506/116656 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 139122 event pairs, 577 based on Foata normal form. 66/12552 useless extension candidates. Maximal degree in co-relation 56889. Up to 2695 conditions per place. [2022-11-16 12:52:08,369 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 418 selfloop transitions, 395 changer transitions 0/876 dead transitions. [2022-11-16 12:52:08,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 876 transitions, 16216 flow [2022-11-16 12:52:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 12:52:08,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-16 12:52:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2646 transitions. [2022-11-16 12:52:08,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5080645161290323 [2022-11-16 12:52:08,374 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2646 transitions. [2022-11-16 12:52:08,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2646 transitions. [2022-11-16 12:52:08,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:52:08,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2646 transitions. [2022-11-16 12:52:08,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 94.5) internal successors, (2646), 28 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:08,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:08,390 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:08,390 INFO L175 Difference]: Start difference. First operand has 374 places, 633 transitions, 11333 flow. Second operand 28 states and 2646 transitions. [2022-11-16 12:52:08,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 876 transitions, 16216 flow [2022-11-16 12:52:09,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 876 transitions, 16030 flow, removed 84 selfloop flow, removed 5 redundant places. [2022-11-16 12:52:09,434 INFO L231 Difference]: Finished difference. Result has 409 places, 722 transitions, 14397 flow [2022-11-16 12:52:09,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=11165, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14397, PETRI_PLACES=409, PETRI_TRANSITIONS=722} [2022-11-16 12:52:09,435 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 237 predicate places. [2022-11-16 12:52:09,435 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 722 transitions, 14397 flow [2022-11-16 12:52:09,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:09,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:52:09,437 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] [2022-11-16 12:52:09,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:52:09,437 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:52:09,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:09,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1481233283, now seen corresponding path program 11 times [2022-11-16 12:52:09,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:09,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531941401] [2022-11-16 12:52:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:09,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:11,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:11,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531941401] [2022-11-16 12:52:11,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531941401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:11,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:11,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:52:11,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360143216] [2022-11-16 12:52:11,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:11,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:52:11,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:11,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:52:11,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:52:11,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-16 12:52:11,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 722 transitions, 14397 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:11,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:52:11,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-16 12:52:11,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:52:18,397 INFO L130 PetriNetUnfolder]: 4085/13060 cut-off events. [2022-11-16 12:52:18,397 INFO L131 PetriNetUnfolder]: For 153742/153742 co-relation queries the response was YES. [2022-11-16 12:52:18,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61849 conditions, 13060 events. 4085/13060 cut-off events. For 153742/153742 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 144863 event pairs, 2257 based on Foata normal form. 3/12764 useless extension candidates. Maximal degree in co-relation 61729. Up to 5715 conditions per place. [2022-11-16 12:52:18,686 INFO L137 encePairwiseOnDemand]: 162/186 looper letters, 516 selfloop transitions, 321 changer transitions 0/900 dead transitions. [2022-11-16 12:52:18,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 900 transitions, 18989 flow [2022-11-16 12:52:18,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:52:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 12:52:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1893 transitions. [2022-11-16 12:52:18,696 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5088709677419355 [2022-11-16 12:52:18,696 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1893 transitions. [2022-11-16 12:52:18,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1893 transitions. [2022-11-16 12:52:18,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:52:18,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1893 transitions. [2022-11-16 12:52:18,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.65) internal successors, (1893), 20 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:18,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:18,703 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:18,703 INFO L175 Difference]: Start difference. First operand has 409 places, 722 transitions, 14397 flow. Second operand 20 states and 1893 transitions. [2022-11-16 12:52:18,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 900 transitions, 18989 flow [2022-11-16 12:52:20,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 900 transitions, 18628 flow, removed 137 selfloop flow, removed 7 redundant places. [2022-11-16 12:52:20,109 INFO L231 Difference]: Finished difference. Result has 432 places, 773 transitions, 16166 flow [2022-11-16 12:52:20,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=14097, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=16166, PETRI_PLACES=432, PETRI_TRANSITIONS=773} [2022-11-16 12:52:20,111 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 260 predicate places. [2022-11-16 12:52:20,111 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 773 transitions, 16166 flow [2022-11-16 12:52:20,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:20,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:52:20,112 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] [2022-11-16 12:52:20,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:52:20,113 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:52:20,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:20,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1633854285, now seen corresponding path program 12 times [2022-11-16 12:52:20,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:20,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17362501] [2022-11-16 12:52:20,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:20,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:22,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:22,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17362501] [2022-11-16 12:52:22,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17362501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:22,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:22,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 12:52:22,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700982503] [2022-11-16 12:52:22,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:22,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:52:22,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:22,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:52:22,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:52:22,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-16 12:52:22,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 773 transitions, 16166 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:22,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:52:22,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-16 12:52:22,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:52:29,917 INFO L130 PetriNetUnfolder]: 4482/14317 cut-off events. [2022-11-16 12:52:29,917 INFO L131 PetriNetUnfolder]: For 182204/182254 co-relation queries the response was YES. [2022-11-16 12:52:30,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69513 conditions, 14317 events. 4482/14317 cut-off events. For 182204/182254 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 162981 event pairs, 2014 based on Foata normal form. 35/14089 useless extension candidates. Maximal degree in co-relation 69382. Up to 4882 conditions per place. [2022-11-16 12:52:30,266 INFO L137 encePairwiseOnDemand]: 160/186 looper letters, 595 selfloop transitions, 320 changer transitions 0/978 dead transitions. [2022-11-16 12:52:30,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 978 transitions, 21404 flow [2022-11-16 12:52:30,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:52:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:52:30,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1815 transitions. [2022-11-16 12:52:30,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5135823429541596 [2022-11-16 12:52:30,272 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1815 transitions. [2022-11-16 12:52:30,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1815 transitions. [2022-11-16 12:52:30,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:52:30,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1815 transitions. [2022-11-16 12:52:30,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.52631578947368) internal successors, (1815), 19 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:30,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:30,281 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:30,281 INFO L175 Difference]: Start difference. First operand has 432 places, 773 transitions, 16166 flow. Second operand 19 states and 1815 transitions. [2022-11-16 12:52:30,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 978 transitions, 21404 flow [2022-11-16 12:52:32,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 978 transitions, 21135 flow, removed 96 selfloop flow, removed 6 redundant places. [2022-11-16 12:52:32,319 INFO L231 Difference]: Finished difference. Result has 455 places, 841 transitions, 18750 flow [2022-11-16 12:52:32,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=15954, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=18750, PETRI_PLACES=455, PETRI_TRANSITIONS=841} [2022-11-16 12:52:32,320 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 283 predicate places. [2022-11-16 12:52:32,321 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 841 transitions, 18750 flow [2022-11-16 12:52:32,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:32,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:52:32,321 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] [2022-11-16 12:52:32,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:52:32,321 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:52:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash 770623071, now seen corresponding path program 13 times [2022-11-16 12:52:32,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:32,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068431685] [2022-11-16 12:52:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:32,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:34,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:34,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068431685] [2022-11-16 12:52:34,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068431685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:34,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:34,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 12:52:34,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669285404] [2022-11-16 12:52:34,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:34,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:52:34,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:34,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:52:34,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:52:34,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 186 [2022-11-16 12:52:34,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 841 transitions, 18750 flow. Second operand has 21 states, 21 states have (on average 88.95238095238095) internal successors, (1868), 21 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:34,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:52:34,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 186 [2022-11-16 12:52:34,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:52:44,832 INFO L130 PetriNetUnfolder]: 4488/14596 cut-off events. [2022-11-16 12:52:44,832 INFO L131 PetriNetUnfolder]: For 198934/199019 co-relation queries the response was YES. [2022-11-16 12:52:45,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72464 conditions, 14596 events. 4488/14596 cut-off events. For 198934/199019 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 169524 event pairs, 767 based on Foata normal form. 47/14307 useless extension candidates. Maximal degree in co-relation 72324. Up to 3428 conditions per place. [2022-11-16 12:52:45,185 INFO L137 encePairwiseOnDemand]: 158/186 looper letters, 557 selfloop transitions, 485 changer transitions 0/1104 dead transitions. [2022-11-16 12:52:45,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 1104 transitions, 25557 flow [2022-11-16 12:52:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:52:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 12:52:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2940 transitions. [2022-11-16 12:52:45,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4939516129032258 [2022-11-16 12:52:45,191 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2940 transitions. [2022-11-16 12:52:45,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2940 transitions. [2022-11-16 12:52:45,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:52:45,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2940 transitions. [2022-11-16 12:52:45,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 91.875) internal successors, (2940), 32 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:45,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 186.0) internal successors, (6138), 33 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:45,207 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 186.0) internal successors, (6138), 33 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:45,207 INFO L175 Difference]: Start difference. First operand has 455 places, 841 transitions, 18750 flow. Second operand 32 states and 2940 transitions. [2022-11-16 12:52:45,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 1104 transitions, 25557 flow [2022-11-16 12:52:47,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 1104 transitions, 25209 flow, removed 161 selfloop flow, removed 5 redundant places. [2022-11-16 12:52:47,366 INFO L231 Difference]: Finished difference. Result has 493 places, 919 transitions, 22005 flow [2022-11-16 12:52:47,367 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=18442, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=22005, PETRI_PLACES=493, PETRI_TRANSITIONS=919} [2022-11-16 12:52:47,367 INFO L288 CegarLoopForPetriNet]: 172 programPoint places, 321 predicate places. [2022-11-16 12:52:47,367 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 919 transitions, 22005 flow [2022-11-16 12:52:47,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 88.95238095238095) internal successors, (1868), 21 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:47,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:52:47,368 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] [2022-11-16 12:52:47,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:52:47,368 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:52:47,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1564014429, now seen corresponding path program 14 times [2022-11-16 12:52:47,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:47,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934254188] [2022-11-16 12:52:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:47,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:52:49,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:49,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934254188] [2022-11-16 12:52:49,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934254188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:52:49,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:52:49,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:52:49,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229681215] [2022-11-16 12:52:49,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:52:49,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:52:49,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:49,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:52:49,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:52:49,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-11-16 12:52:49,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 919 transitions, 22005 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:49,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:52:49,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-11-16 12:52:49,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand