./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:49:16,721 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:16,873 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:49:16,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:16,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:16,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:16,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:16,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:16,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:49:16,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:49:16,952 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:16,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:16,954 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:16,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:16,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:49:16,957 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:49:16,957 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:16,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:49:16,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:16,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:49:16,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:49:16,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:49:16,961 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:49:16,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:49:16,962 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:16,963 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:16,964 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:16,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:49:16,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:16,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:16,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:49:16,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:49:16,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:49:16,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:49:16,968 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:49:16,969 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:49:16,969 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:49:16,969 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:49:16,970 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:49:16,970 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 [2023-11-19 07:49:17,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:17,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:17,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:17,395 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:17,396 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:17,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2023-11-19 07:49:20,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:21,338 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:21,339 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2023-11-19 07:49:21,377 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu/data/0d125e0d5/1a8082d9596c4f3498800f0785645ee6/FLAG77b8f7e7a [2023-11-19 07:49:21,396 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu/data/0d125e0d5/1a8082d9596c4f3498800f0785645ee6 [2023-11-19 07:49:21,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:21,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:21,409 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:21,409 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:21,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:21,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:21" (1/1) ... [2023-11-19 07:49:21,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd7b635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:21, skipping insertion in model container [2023-11-19 07:49:21,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:21" (1/1) ... [2023-11-19 07:49:21,493 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:22,476 WARN L240 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_5516e735-0eda-4227-aca2-41938c5b1a2b/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-11-19 07:49:22,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:22,569 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:49:22,629 WARN L240 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_5516e735-0eda-4227-aca2-41938c5b1a2b/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2023-11-19 07:49:22,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:22,818 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:49:22,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:22 WrapperNode [2023-11-19 07:49:22,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:22,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:22,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:49:22,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:49:22,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:22" (1/1) ... [2023-11-19 07:49:22,877 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:22" (1/1) ... [2023-11-19 07:49:22,925 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 135 [2023-11-19 07:49:22,926 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:22,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:49:22,927 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:49:22,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:49:22,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:22" (1/1) ... [2023-11-19 07:49:22,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:22" (1/1) ... [2023-11-19 07:49:22,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:22" (1/1) ... [2023-11-19 07:49:22,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:22" (1/1) ... [2023-11-19 07:49:22,969 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:22" (1/1) ... [2023-11-19 07:49:22,972 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:22" (1/1) ... [2023-11-19 07:49:22,979 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:22" (1/1) ... [2023-11-19 07:49:22,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:22" (1/1) ... [2023-11-19 07:49:22,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:49:22,993 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:49:22,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:49:22,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:49:22,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:22" (1/1) ... [2023-11-19 07:49:23,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:23,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:23,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:49:23,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5516e735-0eda-4227-aca2-41938c5b1a2b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:49:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:49:23,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:49:23,090 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:49:23,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:49:23,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:49:23,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:49:23,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:49:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-19 07:49:23,091 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-19 07:49:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:49:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:49:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:49:23,093 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:49:23,444 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:49:23,446 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:49:23,719 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:49:23,731 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:49:23,731 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:49:23,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:23 BoogieIcfgContainer [2023-11-19 07:49:23,737 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:49:23,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:49:23,740 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:49:23,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:49:23,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:21" (1/3) ... [2023-11-19 07:49:23,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c158dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:23, skipping insertion in model container [2023-11-19 07:49:23,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:22" (2/3) ... [2023-11-19 07:49:23,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c158dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:23, skipping insertion in model container [2023-11-19 07:49:23,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:23" (3/3) ... [2023-11-19 07:49:23,748 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2023-11-19 07:49:23,782 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:49:23,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:49:23,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:49:23,795 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:49:23,899 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:49:23,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 196 transitions, 406 flow [2023-11-19 07:49:24,068 INFO L124 PetriNetUnfolderBase]: 10/242 cut-off events. [2023-11-19 07:49:24,068 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:49:24,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 242 events. 10/242 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 431 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 139. Up to 4 conditions per place. [2023-11-19 07:49:24,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 196 transitions, 406 flow [2023-11-19 07:49:24,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 180 transitions, 372 flow [2023-11-19 07:49:24,092 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:49:24,121 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 180 transitions, 372 flow [2023-11-19 07:49:24,125 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 180 transitions, 372 flow [2023-11-19 07:49:24,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 180 transitions, 372 flow [2023-11-19 07:49:24,235 INFO L124 PetriNetUnfolderBase]: 7/215 cut-off events. [2023-11-19 07:49:24,235 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:49:24,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 215 events. 7/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 354 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 125. Up to 4 conditions per place. [2023-11-19 07:49:24,241 INFO L119 LiptonReduction]: Number of co-enabled transitions 3296 [2023-11-19 07:49:40,596 INFO L134 LiptonReduction]: Checked pairs total: 6589 [2023-11-19 07:49:40,596 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-11-19 07:49:40,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:40,622 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=LoopHeads, 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;@e121aed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:40,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:49:40,624 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:49:40,624 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:49:40,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:49:40,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:40,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:49:40,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:40,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash 671, now seen corresponding path program 1 times [2023-11-19 07:49:40,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:40,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461677746] [2023-11-19 07:49:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:40,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:40,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:40,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461677746] [2023-11-19 07:49:40,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461677746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:40,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:40,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:49:40,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034571889] [2023-11-19 07:49:40,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:40,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:49:40,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:40,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:49:40,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:49:40,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 393 [2023-11-19 07:49:40,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 180.5) internal successors, (361), 2 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:40,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:40,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 393 [2023-11-19 07:49:40,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:41,263 INFO L124 PetriNetUnfolderBase]: 217/422 cut-off events. [2023-11-19 07:49:41,264 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-19 07:49:41,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 422 events. 217/422 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1980 event pairs, 216 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 741. Up to 391 conditions per place. [2023-11-19 07:49:41,275 INFO L140 encePairwiseOnDemand]: 390/393 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-11-19 07:49:41,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2023-11-19 07:49:41,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:49:41,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:49:41,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 388 transitions. [2023-11-19 07:49:41,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49363867684478374 [2023-11-19 07:49:41,310 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 388 transitions. [2023-11-19 07:49:41,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 388 transitions. [2023-11-19 07:49:41,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:41,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 388 transitions. [2023-11-19 07:49:41,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 194.0) internal successors, (388), 2 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:41,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 393.0) internal successors, (1179), 3 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:41,336 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 393.0) internal successors, (1179), 3 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:41,339 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 388 transitions. [2023-11-19 07:49:41,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2023-11-19 07:49:41,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:49:41,349 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-11-19 07:49:41,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-11-19 07:49:41,358 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-19 07:49:41,358 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-11-19 07:49:41,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 180.5) internal successors, (361), 2 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:41,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:41,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:49:41,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:49:41,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:41,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:41,362 INFO L85 PathProgramCache]: Analyzing trace with hash 20598346, now seen corresponding path program 1 times [2023-11-19 07:49:41,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:41,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471427664] [2023-11-19 07:49:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:41,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:42,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:42,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471427664] [2023-11-19 07:49:42,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471427664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:42,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:42,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:49:42,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657782755] [2023-11-19 07:49:42,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:42,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:42,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:42,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:42,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:42,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 393 [2023-11-19 07:49:42,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:42,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:42,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 393 [2023-11-19 07:49:42,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:42,477 INFO L124 PetriNetUnfolderBase]: 344/671 cut-off events. [2023-11-19 07:49:42,477 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:49:42,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 671 events. 344/671 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3486 event pairs, 184 based on Foata normal form. 0/619 useless extension candidates. Maximal degree in co-relation 1289. Up to 453 conditions per place. [2023-11-19 07:49:42,486 INFO L140 encePairwiseOnDemand]: 385/393 looper letters, 29 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-11-19 07:49:42,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 154 flow [2023-11-19 07:49:42,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:42,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2023-11-19 07:49:42,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.448685326547922 [2023-11-19 07:49:42,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 529 transitions. [2023-11-19 07:49:42,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 529 transitions. [2023-11-19 07:49:42,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:42,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 529 transitions. [2023-11-19 07:49:42,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:42,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:42,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:42,503 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 529 transitions. [2023-11-19 07:49:42,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 154 flow [2023-11-19 07:49:42,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:42,506 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-11-19 07:49:42,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-11-19 07:49:42,507 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-11-19 07:49:42,508 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-11-19 07:49:42,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:42,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:42,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:49:42,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:49:42,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:42,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:42,511 INFO L85 PathProgramCache]: Analyzing trace with hash 638548372, now seen corresponding path program 1 times [2023-11-19 07:49:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:42,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570870516] [2023-11-19 07:49:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:42,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:42,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:42,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570870516] [2023-11-19 07:49:42,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570870516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:42,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:42,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:49:42,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99923229] [2023-11-19 07:49:42,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:42,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:42,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:42,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:42,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:42,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 393 [2023-11-19 07:49:42,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:42,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:42,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 393 [2023-11-19 07:49:42,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:43,207 INFO L124 PetriNetUnfolderBase]: 483/889 cut-off events. [2023-11-19 07:49:43,208 INFO L125 PetriNetUnfolderBase]: For 370/378 co-relation queries the response was YES. [2023-11-19 07:49:43,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 889 events. 483/889 cut-off events. For 370/378 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4573 event pairs, 259 based on Foata normal form. 26/911 useless extension candidates. Maximal degree in co-relation 2323. Up to 669 conditions per place. [2023-11-19 07:49:43,219 INFO L140 encePairwiseOnDemand]: 386/393 looper letters, 35 selfloop transitions, 9 changer transitions 2/48 dead transitions. [2023-11-19 07:49:43,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 262 flow [2023-11-19 07:49:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-11-19 07:49:43,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4495335029686175 [2023-11-19 07:49:43,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-11-19 07:49:43,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-11-19 07:49:43,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:43,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-11-19 07:49:43,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:43,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:43,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:43,232 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 530 transitions. [2023-11-19 07:49:43,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 262 flow [2023-11-19 07:49:43,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:49:43,239 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2023-11-19 07:49:43,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-11-19 07:49:43,241 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-11-19 07:49:43,241 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2023-11-19 07:49:43,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:43,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:43,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:43,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:49:43,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:43,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:43,244 INFO L85 PathProgramCache]: Analyzing trace with hash 459836077, now seen corresponding path program 1 times [2023-11-19 07:49:43,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:43,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489203713] [2023-11-19 07:49:43,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:43,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:43,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:43,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489203713] [2023-11-19 07:49:43,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489203713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:43,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:43,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:43,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770538240] [2023-11-19 07:49:43,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:43,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:43,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:43,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:43,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:43,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 393 [2023-11-19 07:49:43,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:43,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:43,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 393 [2023-11-19 07:49:43,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:43,686 INFO L124 PetriNetUnfolderBase]: 105/210 cut-off events. [2023-11-19 07:49:43,687 INFO L125 PetriNetUnfolderBase]: For 167/193 co-relation queries the response was YES. [2023-11-19 07:49:43,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 210 events. 105/210 cut-off events. For 167/193 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 792 event pairs, 23 based on Foata normal form. 23/223 useless extension candidates. Maximal degree in co-relation 543. Up to 149 conditions per place. [2023-11-19 07:49:43,689 INFO L140 encePairwiseOnDemand]: 391/393 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-19 07:49:43,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2023-11-19 07:49:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:43,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2023-11-19 07:49:43,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631043256997455 [2023-11-19 07:49:43,693 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2023-11-19 07:49:43,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2023-11-19 07:49:43,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:43,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2023-11-19 07:49:43,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:43,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:43,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:43,702 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 546 transitions. [2023-11-19 07:49:43,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2023-11-19 07:49:43,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-19 07:49:43,704 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2023-11-19 07:49:43,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-11-19 07:49:43,705 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-19 07:49:43,706 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2023-11-19 07:49:43,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:43,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:43,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:43,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:49:43,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:43,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:43,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1460753538, now seen corresponding path program 1 times [2023-11-19 07:49:43,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:43,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764058797] [2023-11-19 07:49:43,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:43,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:44,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:44,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764058797] [2023-11-19 07:49:44,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764058797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:44,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:44,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:44,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162328457] [2023-11-19 07:49:44,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:44,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:44,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:44,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:44,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:44,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 393 [2023-11-19 07:49:44,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:44,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:44,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 393 [2023-11-19 07:49:44,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:44,624 INFO L124 PetriNetUnfolderBase]: 96/227 cut-off events. [2023-11-19 07:49:44,625 INFO L125 PetriNetUnfolderBase]: For 69/70 co-relation queries the response was YES. [2023-11-19 07:49:44,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 227 events. 96/227 cut-off events. For 69/70 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 950 event pairs, 48 based on Foata normal form. 6/230 useless extension candidates. Maximal degree in co-relation 516. Up to 114 conditions per place. [2023-11-19 07:49:44,628 INFO L140 encePairwiseOnDemand]: 389/393 looper letters, 25 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-11-19 07:49:44,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 141 flow [2023-11-19 07:49:44,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2023-11-19 07:49:44,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46225614927905007 [2023-11-19 07:49:44,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2023-11-19 07:49:44,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2023-11-19 07:49:44,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:44,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2023-11-19 07:49:44,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:44,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:44,641 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:44,642 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 3 states and 545 transitions. [2023-11-19 07:49:44,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 141 flow [2023-11-19 07:49:44,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:49:44,644 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 76 flow [2023-11-19 07:49:44,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-11-19 07:49:44,645 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-19 07:49:44,646 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 76 flow [2023-11-19 07:49:44,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:44,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:44,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:44,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:49:44,648 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:44,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:44,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1176763052, now seen corresponding path program 2 times [2023-11-19 07:49:44,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:44,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526499129] [2023-11-19 07:49:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:44,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:47,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:47,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526499129] [2023-11-19 07:49:47,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526499129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:47,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:47,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:49:47,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377589168] [2023-11-19 07:49:47,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:47,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:49:47,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:47,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:49:47,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:49:49,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 393 [2023-11-19 07:49:49,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 76 flow. Second operand has 13 states, 13 states have (on average 148.6153846153846) internal successors, (1932), 13 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:49,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:49,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 393 [2023-11-19 07:49:49,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:50,326 INFO L124 PetriNetUnfolderBase]: 244/488 cut-off events. [2023-11-19 07:49:50,326 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-19 07:49:50,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 488 events. 244/488 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2066 event pairs, 33 based on Foata normal form. 0/486 useless extension candidates. Maximal degree in co-relation 1333. Up to 267 conditions per place. [2023-11-19 07:49:50,332 INFO L140 encePairwiseOnDemand]: 380/393 looper letters, 69 selfloop transitions, 22 changer transitions 0/91 dead transitions. [2023-11-19 07:49:50,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 91 transitions, 459 flow [2023-11-19 07:49:50,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:49:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:49:50,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1852 transitions. [2023-11-19 07:49:50,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3927056827820187 [2023-11-19 07:49:50,342 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1852 transitions. [2023-11-19 07:49:50,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1852 transitions. [2023-11-19 07:49:50,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:50,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1852 transitions. [2023-11-19 07:49:50,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.33333333333334) internal successors, (1852), 12 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:50,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 393.0) internal successors, (5109), 13 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:50,365 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 393.0) internal successors, (5109), 13 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:50,365 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 76 flow. Second operand 12 states and 1852 transitions. [2023-11-19 07:49:50,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 91 transitions, 459 flow [2023-11-19 07:49:50,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 91 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:49:50,370 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 246 flow [2023-11-19 07:49:50,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=246, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2023-11-19 07:49:50,371 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-11-19 07:49:50,372 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 246 flow [2023-11-19 07:49:50,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 148.6153846153846) internal successors, (1932), 13 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:50,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:50,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:50,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:49:50,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:50,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:50,375 INFO L85 PathProgramCache]: Analyzing trace with hash 594830534, now seen corresponding path program 3 times [2023-11-19 07:49:50,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:50,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649087901] [2023-11-19 07:49:50,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:50,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:53,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:53,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:53,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649087901] [2023-11-19 07:49:53,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649087901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:53,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:53,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 07:49:53,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361361509] [2023-11-19 07:49:53,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:53,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:49:53,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:53,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:49:53,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:49:55,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 393 [2023-11-19 07:49:55,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 246 flow. Second operand has 15 states, 15 states have (on average 147.4) internal successors, (2211), 15 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:55,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:55,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 393 [2023-11-19 07:49:55,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:56,652 INFO L124 PetriNetUnfolderBase]: 278/578 cut-off events. [2023-11-19 07:49:56,652 INFO L125 PetriNetUnfolderBase]: For 683/683 co-relation queries the response was YES. [2023-11-19 07:49:56,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2002 conditions, 578 events. 278/578 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2629 event pairs, 109 based on Foata normal form. 1/578 useless extension candidates. Maximal degree in co-relation 1988. Up to 474 conditions per place. [2023-11-19 07:49:56,660 INFO L140 encePairwiseOnDemand]: 381/393 looper letters, 69 selfloop transitions, 28 changer transitions 0/97 dead transitions. [2023-11-19 07:49:56,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 698 flow [2023-11-19 07:49:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:49:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:49:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1819 transitions. [2023-11-19 07:49:56,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38570822731128074 [2023-11-19 07:49:56,671 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1819 transitions. [2023-11-19 07:49:56,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1819 transitions. [2023-11-19 07:49:56,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:56,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1819 transitions. [2023-11-19 07:49:56,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 151.58333333333334) internal successors, (1819), 12 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 393.0) internal successors, (5109), 13 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,737 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 393.0) internal successors, (5109), 13 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,737 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 246 flow. Second operand 12 states and 1819 transitions. [2023-11-19 07:49:56,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 698 flow [2023-11-19 07:49:56,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 670 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:56,747 INFO L231 Difference]: Finished difference. Result has 69 places, 73 transitions, 513 flow [2023-11-19 07:49:56,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=513, PETRI_PLACES=69, PETRI_TRANSITIONS=73} [2023-11-19 07:49:56,749 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-11-19 07:49:56,751 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 73 transitions, 513 flow [2023-11-19 07:49:56,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 147.4) internal successors, (2211), 15 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:56,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:56,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:49:56,755 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:49:56,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:56,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1633580016, now seen corresponding path program 4 times [2023-11-19 07:49:56,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:56,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747752637] [2023-11-19 07:49:56,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:56,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:59,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:59,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747752637] [2023-11-19 07:49:59,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747752637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:59,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:59,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-19 07:49:59,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487502414] [2023-11-19 07:49:59,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:59,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:49:59,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:59,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:49:59,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:50:01,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 393 [2023-11-19 07:50:01,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 73 transitions, 513 flow. Second operand has 15 states, 15 states have (on average 147.4) internal successors, (2211), 15 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:01,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:01,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 393 [2023-11-19 07:50:01,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:03,298 INFO L124 PetriNetUnfolderBase]: 314/670 cut-off events. [2023-11-19 07:50:03,298 INFO L125 PetriNetUnfolderBase]: For 1345/1345 co-relation queries the response was YES. [2023-11-19 07:50:03,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2620 conditions, 670 events. 314/670 cut-off events. For 1345/1345 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3304 event pairs, 70 based on Foata normal form. 1/670 useless extension candidates. Maximal degree in co-relation 2596. Up to 409 conditions per place. [2023-11-19 07:50:03,308 INFO L140 encePairwiseOnDemand]: 379/393 looper letters, 89 selfloop transitions, 45 changer transitions 0/134 dead transitions. [2023-11-19 07:50:03,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 134 transitions, 1096 flow [2023-11-19 07:50:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:50:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:50:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1838 transitions. [2023-11-19 07:50:03,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897370653095844 [2023-11-19 07:50:03,321 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1838 transitions. [2023-11-19 07:50:03,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1838 transitions. [2023-11-19 07:50:03,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:03,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1838 transitions. [2023-11-19 07:50:03,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 153.16666666666666) internal successors, (1838), 12 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:03,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 393.0) internal successors, (5109), 13 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:03,344 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 393.0) internal successors, (5109), 13 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:03,344 INFO L175 Difference]: Start difference. First operand has 69 places, 73 transitions, 513 flow. Second operand 12 states and 1838 transitions. [2023-11-19 07:50:03,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 134 transitions, 1096 flow [2023-11-19 07:50:03,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 134 transitions, 1074 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-11-19 07:50:03,358 INFO L231 Difference]: Finished difference. Result has 85 places, 91 transitions, 772 flow [2023-11-19 07:50:03,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=772, PETRI_PLACES=85, PETRI_TRANSITIONS=91} [2023-11-19 07:50:03,362 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2023-11-19 07:50:03,362 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 91 transitions, 772 flow [2023-11-19 07:50:03,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 147.4) internal successors, (2211), 15 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:03,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:03,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:03,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:50:03,364 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-19 07:50:03,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:03,365 INFO L85 PathProgramCache]: Analyzing trace with hash 800131468, now seen corresponding path program 5 times [2023-11-19 07:50:03,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:03,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152232969] [2023-11-19 07:50:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:03,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat