./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl --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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:14:45,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:14:46,017 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:14:46,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:14:46,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:14:46,061 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:14:46,062 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:14:46,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:14:46,064 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:14:46,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:14:46,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:14:46,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:14:46,070 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:14:46,072 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:14:46,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:14:46,073 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:14:46,073 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:14:46,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:14:46,074 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:14:46,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:14:46,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:14:46,076 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:14:46,076 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:14:46,077 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:14:46,077 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:14:46,078 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:14:46,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:14:46,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:14:46,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:14:46,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:14:46,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:14:46,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:14:46,082 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:14:46,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:14:46,082 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:14:46,082 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:14:46,083 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:14:46,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:14:46,083 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:14:46,083 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_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2023-11-12 02:14:46,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:14:46,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:14:46,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:14:46,437 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:14:46,438 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:14:46,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread/queue.i [2023-11-12 02:14:49,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:14:49,793 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:14:49,793 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/sv-benchmarks/c/pthread/queue.i [2023-11-12 02:14:49,820 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl/data/a22a0e939/70709288b682421da1f1c9ec237662a9/FLAG1cde23fae [2023-11-12 02:14:49,838 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl/data/a22a0e939/70709288b682421da1f1c9ec237662a9 [2023-11-12 02:14:49,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:14:49,847 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:14:49,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:14:49,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:14:49,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:14:49,856 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:14:49" (1/1) ... [2023-11-12 02:14:49,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13de7518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:49, skipping insertion in model container [2023-11-12 02:14:49,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:14:49" (1/1) ... [2023-11-12 02:14:49,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:14:50,566 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_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/sv-benchmarks/c/pthread/queue.i[43284,43297] [2023-11-12 02:14:50,574 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_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/sv-benchmarks/c/pthread/queue.i[43491,43504] [2023-11-12 02:14:50,578 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_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/sv-benchmarks/c/pthread/queue.i[43772,43785] [2023-11-12 02:14:50,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:14:50,596 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:14:50,678 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_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/sv-benchmarks/c/pthread/queue.i[43284,43297] [2023-11-12 02:14:50,680 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_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/sv-benchmarks/c/pthread/queue.i[43491,43504] [2023-11-12 02:14:50,683 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_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/sv-benchmarks/c/pthread/queue.i[43772,43785] [2023-11-12 02:14:50,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:14:50,776 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:14:50,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:50 WrapperNode [2023-11-12 02:14:50,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:14:50,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:14:50,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:14:50,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:14:50,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:50" (1/1) ... [2023-11-12 02:14:50,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:50" (1/1) ... [2023-11-12 02:14:50,883 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 251 [2023-11-12 02:14:50,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:14:50,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:14:50,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:14:50,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:14:50,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:50" (1/1) ... [2023-11-12 02:14:50,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:50" (1/1) ... [2023-11-12 02:14:50,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:50" (1/1) ... [2023-11-12 02:14:50,901 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:50" (1/1) ... [2023-11-12 02:14:50,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:50" (1/1) ... [2023-11-12 02:14:50,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:50" (1/1) ... [2023-11-12 02:14:50,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:50" (1/1) ... [2023-11-12 02:14:50,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:50" (1/1) ... [2023-11-12 02:14:50,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:14:50,928 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:14:50,929 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:14:50,929 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:14:50,930 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:50" (1/1) ... [2023-11-12 02:14:50,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:14:50,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:14:51,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:14:51,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5f08b7c-09cc-412c-ba9a-f1cb777a5361/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:14:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 02:14:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 02:14:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 02:14:51,075 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 02:14:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:14:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:14:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:14:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:14:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:14:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:14:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:14:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:14:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:14:51,078 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:14:51,237 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:14:51,239 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:14:51,625 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:14:51,637 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:14:51,637 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:14:51,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:14:51 BoogieIcfgContainer [2023-11-12 02:14:51,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:14:51,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:14:51,643 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:14:51,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:14:51,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:14:49" (1/3) ... [2023-11-12 02:14:51,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4973f8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:14:51, skipping insertion in model container [2023-11-12 02:14:51,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:50" (2/3) ... [2023-11-12 02:14:51,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4973f8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:14:51, skipping insertion in model container [2023-11-12 02:14:51,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:14:51" (3/3) ... [2023-11-12 02:14:51,650 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-11-12 02:14:51,659 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:14:51,671 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:14:51,671 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-12 02:14:51,671 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:14:51,812 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:14:51,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 278 transitions, 570 flow [2023-11-12 02:14:51,985 INFO L124 PetriNetUnfolderBase]: 15/276 cut-off events. [2023-11-12 02:14:51,986 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:14:51,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 276 events. 15/276 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 357 event pairs, 0 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 202. Up to 2 conditions per place. [2023-11-12 02:14:51,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 278 transitions, 570 flow [2023-11-12 02:14:52,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 266 transitions, 541 flow [2023-11-12 02:14:52,007 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:14:52,017 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 266 transitions, 541 flow [2023-11-12 02:14:52,021 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 266 transitions, 541 flow [2023-11-12 02:14:52,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 266 transitions, 541 flow [2023-11-12 02:14:52,104 INFO L124 PetriNetUnfolderBase]: 15/266 cut-off events. [2023-11-12 02:14:52,104 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:14:52,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 266 events. 15/266 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 321 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 202. Up to 2 conditions per place. [2023-11-12 02:14:52,153 INFO L119 LiptonReduction]: Number of co-enabled transitions 17164 [2023-11-12 02:15:01,508 INFO L134 LiptonReduction]: Checked pairs total: 34415 [2023-11-12 02:15:01,509 INFO L136 LiptonReduction]: Total number of compositions: 229 [2023-11-12 02:15:01,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:15:01,533 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;@389695c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:15:01,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-12 02:15:01,535 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:15:01,535 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-12 02:15:01,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:15:01,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:01,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:15:01,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:15:01,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:01,543 INFO L85 PathProgramCache]: Analyzing trace with hash 33444, now seen corresponding path program 1 times [2023-11-12 02:15:01,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:01,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917948551] [2023-11-12 02:15:01,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:01,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:01,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:01,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917948551] [2023-11-12 02:15:01,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917948551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:01,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:01,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:15:01,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859291843] [2023-11-12 02:15:01,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:01,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:15:01,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:01,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:15:01,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:15:01,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 507 [2023-11-12 02:15:01,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 145 flow. Second operand has 2 states, 2 states have (on average 265.5) internal successors, (531), 2 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:01,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:01,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 507 [2023-11-12 02:15:01,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:02,268 INFO L124 PetriNetUnfolderBase]: 1665/2832 cut-off events. [2023-11-12 02:15:02,268 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-12 02:15:02,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5499 conditions, 2832 events. 1665/2832 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13326 event pairs, 1323 based on Foata normal form. 90/2478 useless extension candidates. Maximal degree in co-relation 5328. Up to 2593 conditions per place. [2023-11-12 02:15:02,294 INFO L140 encePairwiseOnDemand]: 504/507 looper letters, 54 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2023-11-12 02:15:02,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 243 flow [2023-11-12 02:15:02,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:15:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:15:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 587 transitions. [2023-11-12 02:15:02,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5788954635108481 [2023-11-12 02:15:02,323 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 587 transitions. [2023-11-12 02:15:02,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 587 transitions. [2023-11-12 02:15:02,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:02,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 587 transitions. [2023-11-12 02:15:02,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 293.5) internal successors, (587), 2 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:02,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 507.0) internal successors, (1521), 3 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:02,348 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 507.0) internal successors, (1521), 3 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:02,350 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 145 flow. Second operand 2 states and 587 transitions. [2023-11-12 02:15:02,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 243 flow [2023-11-12 02:15:02,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:15:02,361 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 130 flow [2023-11-12 02:15:02,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2023-11-12 02:15:02,368 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2023-11-12 02:15:02,368 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 130 flow [2023-11-12 02:15:02,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 265.5) internal successors, (531), 2 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:02,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:02,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:02,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:15:02,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:15:02,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:02,372 INFO L85 PathProgramCache]: Analyzing trace with hash -140322023, now seen corresponding path program 1 times [2023-11-12 02:15:02,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:02,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119775898] [2023-11-12 02:15:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:02,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:02,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:02,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119775898] [2023-11-12 02:15:02,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119775898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:02,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:02,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:02,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830634905] [2023-11-12 02:15:02,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:02,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:02,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:02,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:02,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:02,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 507 [2023-11-12 02:15:02,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:02,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:02,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 507 [2023-11-12 02:15:02,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:03,125 INFO L124 PetriNetUnfolderBase]: 1629/2796 cut-off events. [2023-11-12 02:15:03,125 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:15:03,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5408 conditions, 2796 events. 1629/2796 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 13340 event pairs, 1272 based on Foata normal form. 0/2388 useless extension candidates. Maximal degree in co-relation 5405. Up to 2428 conditions per place. [2023-11-12 02:15:03,147 INFO L140 encePairwiseOnDemand]: 503/507 looper letters, 71 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-11-12 02:15:03,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 320 flow [2023-11-12 02:15:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:03,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 855 transitions. [2023-11-12 02:15:03,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5621301775147929 [2023-11-12 02:15:03,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 855 transitions. [2023-11-12 02:15:03,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 855 transitions. [2023-11-12 02:15:03,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:03,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 855 transitions. [2023-11-12 02:15:03,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:03,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:03,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:03,168 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 130 flow. Second operand 3 states and 855 transitions. [2023-11-12 02:15:03,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 320 flow [2023-11-12 02:15:03,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:15:03,175 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 134 flow [2023-11-12 02:15:03,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-11-12 02:15:03,176 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2023-11-12 02:15:03,183 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 134 flow [2023-11-12 02:15:03,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:03,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:03,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:03,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:15:03,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:15:03,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:03,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1704464279, now seen corresponding path program 1 times [2023-11-12 02:15:03,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:03,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231558987] [2023-11-12 02:15:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:03,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:03,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:03,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231558987] [2023-11-12 02:15:03,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231558987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:03,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:03,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:15:03,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728374931] [2023-11-12 02:15:03,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:03,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:15:03,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:03,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:15:03,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:15:04,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 507 [2023-11-12 02:15:04,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 242.4) internal successors, (1212), 5 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:04,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:04,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 507 [2023-11-12 02:15:04,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:04,529 INFO L124 PetriNetUnfolderBase]: 1741/2947 cut-off events. [2023-11-12 02:15:04,529 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-11-12 02:15:04,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5854 conditions, 2947 events. 1741/2947 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13756 event pairs, 1364 based on Foata normal form. 0/2527 useless extension candidates. Maximal degree in co-relation 5850. Up to 2731 conditions per place. [2023-11-12 02:15:04,550 INFO L140 encePairwiseOnDemand]: 500/507 looper letters, 58 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-11-12 02:15:04,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 294 flow [2023-11-12 02:15:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:15:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:15:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1508 transitions. [2023-11-12 02:15:04,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2023-11-12 02:15:04,557 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1508 transitions. [2023-11-12 02:15:04,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1508 transitions. [2023-11-12 02:15:04,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:04,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1508 transitions. [2023-11-12 02:15:04,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.33333333333334) internal successors, (1508), 6 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:04,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:04,575 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:04,575 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 134 flow. Second operand 6 states and 1508 transitions. [2023-11-12 02:15:04,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 294 flow [2023-11-12 02:15:04,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:15:04,580 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 186 flow [2023-11-12 02:15:04,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-11-12 02:15:04,581 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2023-11-12 02:15:04,581 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 186 flow [2023-11-12 02:15:04,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 242.4) internal successors, (1212), 5 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:04,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:04,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:04,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:15:04,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:15:04,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:04,584 INFO L85 PathProgramCache]: Analyzing trace with hash 907106335, now seen corresponding path program 1 times [2023-11-12 02:15:04,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:04,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818583685] [2023-11-12 02:15:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:04,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:04,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:04,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818583685] [2023-11-12 02:15:04,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818583685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:04,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:04,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:15:04,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997636285] [2023-11-12 02:15:04,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:04,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:15:04,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:04,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:15:04,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:15:05,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 507 [2023-11-12 02:15:05,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 236.16666666666666) internal successors, (1417), 6 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:05,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:05,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 507 [2023-11-12 02:15:05,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:05,995 INFO L124 PetriNetUnfolderBase]: 2151/3627 cut-off events. [2023-11-12 02:15:05,995 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2023-11-12 02:15:06,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7462 conditions, 3627 events. 2151/3627 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 17772 event pairs, 448 based on Foata normal form. 17/3226 useless extension candidates. Maximal degree in co-relation 7454. Up to 2819 conditions per place. [2023-11-12 02:15:06,026 INFO L140 encePairwiseOnDemand]: 497/507 looper letters, 95 selfloop transitions, 17 changer transitions 0/119 dead transitions. [2023-11-12 02:15:06,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 119 transitions, 530 flow [2023-11-12 02:15:06,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:15:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:15:06,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1278 transitions. [2023-11-12 02:15:06,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041420118343195 [2023-11-12 02:15:06,032 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1278 transitions. [2023-11-12 02:15:06,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1278 transitions. [2023-11-12 02:15:06,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:06,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1278 transitions. [2023-11-12 02:15:06,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 255.6) internal successors, (1278), 5 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,048 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,049 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 186 flow. Second operand 5 states and 1278 transitions. [2023-11-12 02:15:06,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 119 transitions, 530 flow [2023-11-12 02:15:06,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 119 transitions, 530 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:15:06,056 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 290 flow [2023-11-12 02:15:06,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2023-11-12 02:15:06,057 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2023-11-12 02:15:06,058 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 290 flow [2023-11-12 02:15:06,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 236.16666666666666) internal successors, (1417), 6 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:06,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:06,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:15:06,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:15:06,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:06,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1631786936, now seen corresponding path program 1 times [2023-11-12 02:15:06,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:06,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185368611] [2023-11-12 02:15:06,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:06,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:06,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185368611] [2023-11-12 02:15:06,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185368611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:06,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:06,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:06,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196206935] [2023-11-12 02:15:06,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:06,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:06,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:06,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:06,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:06,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 507 [2023-11-12 02:15:06,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:06,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 507 [2023-11-12 02:15:06,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:06,575 INFO L124 PetriNetUnfolderBase]: 1450/2499 cut-off events. [2023-11-12 02:15:06,575 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2023-11-12 02:15:06,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5331 conditions, 2499 events. 1450/2499 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 10278 event pairs, 701 based on Foata normal form. 76/2222 useless extension candidates. Maximal degree in co-relation 5319. Up to 1338 conditions per place. [2023-11-12 02:15:06,595 INFO L140 encePairwiseOnDemand]: 503/507 looper letters, 82 selfloop transitions, 3 changer transitions 5/100 dead transitions. [2023-11-12 02:15:06,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 100 transitions, 502 flow [2023-11-12 02:15:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:06,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 859 transitions. [2023-11-12 02:15:06,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647600262984879 [2023-11-12 02:15:06,600 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 859 transitions. [2023-11-12 02:15:06,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 859 transitions. [2023-11-12 02:15:06,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:06,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 859 transitions. [2023-11-12 02:15:06,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,611 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 290 flow. Second operand 3 states and 859 transitions. [2023-11-12 02:15:06,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 100 transitions, 502 flow [2023-11-12 02:15:06,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 100 transitions, 496 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-12 02:15:06,617 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 276 flow [2023-11-12 02:15:06,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2023-11-12 02:15:06,619 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 15 predicate places. [2023-11-12 02:15:06,619 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 276 flow [2023-11-12 02:15:06,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:06,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:06,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:06,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:15:06,621 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:15:06,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:06,621 INFO L85 PathProgramCache]: Analyzing trace with hash -792092821, now seen corresponding path program 2 times [2023-11-12 02:15:06,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:06,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856629757] [2023-11-12 02:15:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:06,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:07,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:07,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856629757] [2023-11-12 02:15:07,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856629757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:07,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:07,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:15:07,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335182776] [2023-11-12 02:15:07,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:07,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:15:07,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:07,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:15:07,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:15:08,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 507 [2023-11-12 02:15:08,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 276 flow. Second operand has 9 states, 9 states have (on average 224.44444444444446) internal successors, (2020), 9 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:08,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:08,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 507 [2023-11-12 02:15:08,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:08,991 INFO L124 PetriNetUnfolderBase]: 1421/2483 cut-off events. [2023-11-12 02:15:08,991 INFO L125 PetriNetUnfolderBase]: For 302/302 co-relation queries the response was YES. [2023-11-12 02:15:08,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5303 conditions, 2483 events. 1421/2483 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10120 event pairs, 395 based on Foata normal form. 18/2185 useless extension candidates. Maximal degree in co-relation 5289. Up to 1904 conditions per place. [2023-11-12 02:15:09,012 INFO L140 encePairwiseOnDemand]: 502/507 looper letters, 73 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2023-11-12 02:15:09,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 91 transitions, 469 flow [2023-11-12 02:15:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:15:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:15:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1189 transitions. [2023-11-12 02:15:09,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4690335305719921 [2023-11-12 02:15:09,018 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1189 transitions. [2023-11-12 02:15:09,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1189 transitions. [2023-11-12 02:15:09,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:09,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1189 transitions. [2023-11-12 02:15:09,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 237.8) internal successors, (1189), 5 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,032 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,032 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 276 flow. Second operand 5 states and 1189 transitions. [2023-11-12 02:15:09,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 91 transitions, 469 flow [2023-11-12 02:15:09,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 91 transitions, 457 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-12 02:15:09,041 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 269 flow [2023-11-12 02:15:09,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-11-12 02:15:09,044 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 15 predicate places. [2023-11-12 02:15:09,044 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 269 flow [2023-11-12 02:15:09,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 224.44444444444446) internal successors, (2020), 9 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:09,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:09,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:09,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:15:09,047 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:15:09,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:09,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1098156896, now seen corresponding path program 1 times [2023-11-12 02:15:09,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:09,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129941822] [2023-11-12 02:15:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:09,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:09,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:09,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129941822] [2023-11-12 02:15:09,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129941822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:09,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:09,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:15:09,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371542886] [2023-11-12 02:15:09,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:09,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:15:09,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:09,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:15:09,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:15:10,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 507 [2023-11-12 02:15:10,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 269 flow. Second operand has 9 states, 9 states have (on average 224.44444444444446) internal successors, (2020), 9 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:10,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:10,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 507 [2023-11-12 02:15:10,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:11,417 INFO L124 PetriNetUnfolderBase]: 1420/2484 cut-off events. [2023-11-12 02:15:11,417 INFO L125 PetriNetUnfolderBase]: For 349/349 co-relation queries the response was YES. [2023-11-12 02:15:11,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5323 conditions, 2484 events. 1420/2484 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10180 event pairs, 1034 based on Foata normal form. 0/2159 useless extension candidates. Maximal degree in co-relation 5310. Up to 2290 conditions per place. [2023-11-12 02:15:11,434 INFO L140 encePairwiseOnDemand]: 497/507 looper letters, 67 selfloop transitions, 15 changer transitions 1/91 dead transitions. [2023-11-12 02:15:11,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 91 transitions, 483 flow [2023-11-12 02:15:11,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:15:11,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:15:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1862 transitions. [2023-11-12 02:15:11,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45907297830374755 [2023-11-12 02:15:11,446 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1862 transitions. [2023-11-12 02:15:11,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1862 transitions. [2023-11-12 02:15:11,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:11,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1862 transitions. [2023-11-12 02:15:11,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 232.75) internal successors, (1862), 8 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,463 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,463 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 269 flow. Second operand 8 states and 1862 transitions. [2023-11-12 02:15:11,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 91 transitions, 483 flow [2023-11-12 02:15:11,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 91 transitions, 463 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:15:11,470 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 326 flow [2023-11-12 02:15:11,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=326, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2023-11-12 02:15:11,474 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 21 predicate places. [2023-11-12 02:15:11,475 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 326 flow [2023-11-12 02:15:11,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 224.44444444444446) internal successors, (2020), 9 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:11,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:11,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:11,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:15:11,477 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:15:11,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:11,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1743846486, now seen corresponding path program 1 times [2023-11-12 02:15:11,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:11,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447462751] [2023-11-12 02:15:11,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:11,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:12,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:12,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447462751] [2023-11-12 02:15:12,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447462751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:12,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:12,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:15:12,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54796669] [2023-11-12 02:15:12,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:12,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:15:12,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:12,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:15:12,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:15:13,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 507 [2023-11-12 02:15:13,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 326 flow. Second operand has 10 states, 10 states have (on average 222.4) internal successors, (2224), 10 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:13,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:13,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 507 [2023-11-12 02:15:13,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:14,436 INFO L124 PetriNetUnfolderBase]: 1567/2737 cut-off events. [2023-11-12 02:15:14,436 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2023-11-12 02:15:14,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5955 conditions, 2737 events. 1567/2737 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 11553 event pairs, 438 based on Foata normal form. 0/2381 useless extension candidates. Maximal degree in co-relation 5939. Up to 1861 conditions per place. [2023-11-12 02:15:14,456 INFO L140 encePairwiseOnDemand]: 497/507 looper letters, 92 selfloop transitions, 20 changer transitions 9/129 dead transitions. [2023-11-12 02:15:14,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 685 flow [2023-11-12 02:15:14,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:15:14,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:15:14,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1876 transitions. [2023-11-12 02:15:14,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625246548323471 [2023-11-12 02:15:14,463 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1876 transitions. [2023-11-12 02:15:14,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1876 transitions. [2023-11-12 02:15:14,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:14,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1876 transitions. [2023-11-12 02:15:14,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 234.5) internal successors, (1876), 8 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,481 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,481 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 326 flow. Second operand 8 states and 1876 transitions. [2023-11-12 02:15:14,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 685 flow [2023-11-12 02:15:14,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 661 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-12 02:15:14,487 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 378 flow [2023-11-12 02:15:14,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=378, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-11-12 02:15:14,489 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 26 predicate places. [2023-11-12 02:15:14,489 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 378 flow [2023-11-12 02:15:14,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 222.4) internal successors, (2224), 10 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:14,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:14,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:14,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:15:14,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:15:14,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:14,492 INFO L85 PathProgramCache]: Analyzing trace with hash 317099910, now seen corresponding path program 2 times [2023-11-12 02:15:14,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:14,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102338754] [2023-11-12 02:15:14,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:14,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:15,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:15,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102338754] [2023-11-12 02:15:15,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102338754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:15,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:15,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:15:15,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862206729] [2023-11-12 02:15:15,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:15,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:15:15,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:15,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:15:15,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:15:16,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 507 [2023-11-12 02:15:16,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 220.4) internal successors, (2204), 10 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:16,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:16,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 507 [2023-11-12 02:15:16,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:17,730 INFO L124 PetriNetUnfolderBase]: 1648/2882 cut-off events. [2023-11-12 02:15:17,731 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2023-11-12 02:15:17,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6468 conditions, 2882 events. 1648/2882 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 12483 event pairs, 529 based on Foata normal form. 0/2493 useless extension candidates. Maximal degree in co-relation 6450. Up to 1699 conditions per place. [2023-11-12 02:15:17,754 INFO L140 encePairwiseOnDemand]: 497/507 looper letters, 91 selfloop transitions, 22 changer transitions 8/129 dead transitions. [2023-11-12 02:15:17,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 129 transitions, 733 flow [2023-11-12 02:15:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:15:17,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:15:17,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1857 transitions. [2023-11-12 02:15:17,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578402366863905 [2023-11-12 02:15:17,762 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1857 transitions. [2023-11-12 02:15:17,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1857 transitions. [2023-11-12 02:15:17,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:17,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1857 transitions. [2023-11-12 02:15:17,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 232.125) internal successors, (1857), 8 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:17,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:17,788 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:17,788 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 378 flow. Second operand 8 states and 1857 transitions. [2023-11-12 02:15:17,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 129 transitions, 733 flow [2023-11-12 02:15:17,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 129 transitions, 697 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-12 02:15:17,796 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 425 flow [2023-11-12 02:15:17,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=425, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2023-11-12 02:15:17,798 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2023-11-12 02:15:17,800 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 425 flow [2023-11-12 02:15:17,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 220.4) internal successors, (2204), 10 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:17,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:17,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:17,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:15:17,802 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:15:17,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:17,803 INFO L85 PathProgramCache]: Analyzing trace with hash 316869270, now seen corresponding path program 3 times [2023-11-12 02:15:17,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:17,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78186145] [2023-11-12 02:15:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:17,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:18,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:18,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78186145] [2023-11-12 02:15:18,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78186145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:18,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:18,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:15:18,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158303892] [2023-11-12 02:15:18,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:18,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:15:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:18,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:15:18,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:15:19,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 507 [2023-11-12 02:15:19,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 425 flow. Second operand has 10 states, 10 states have (on average 220.4) internal successors, (2204), 10 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:19,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:19,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 507 [2023-11-12 02:15:19,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:20,473 INFO L124 PetriNetUnfolderBase]: 1635/2851 cut-off events. [2023-11-12 02:15:20,473 INFO L125 PetriNetUnfolderBase]: For 761/761 co-relation queries the response was YES. [2023-11-12 02:15:20,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6494 conditions, 2851 events. 1635/2851 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 12281 event pairs, 518 based on Foata normal form. 0/2475 useless extension candidates. Maximal degree in co-relation 6474. Up to 1699 conditions per place. [2023-11-12 02:15:20,498 INFO L140 encePairwiseOnDemand]: 498/507 looper letters, 89 selfloop transitions, 22 changer transitions 9/127 dead transitions. [2023-11-12 02:15:20,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 127 transitions, 758 flow [2023-11-12 02:15:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:15:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:15:20,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1855 transitions. [2023-11-12 02:15:20,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573471400394477 [2023-11-12 02:15:20,506 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1855 transitions. [2023-11-12 02:15:20,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1855 transitions. [2023-11-12 02:15:20,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:20,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1855 transitions. [2023-11-12 02:15:20,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 231.875) internal successors, (1855), 8 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:20,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:20,522 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 507.0) internal successors, (4563), 9 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:20,522 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 425 flow. Second operand 8 states and 1855 transitions. [2023-11-12 02:15:20,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 127 transitions, 758 flow [2023-11-12 02:15:20,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 127 transitions, 731 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-12 02:15:20,532 INFO L231 Difference]: Finished difference. Result has 94 places, 83 transitions, 434 flow [2023-11-12 02:15:20,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=434, PETRI_PLACES=94, PETRI_TRANSITIONS=83} [2023-11-12 02:15:20,534 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2023-11-12 02:15:20,535 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 434 flow [2023-11-12 02:15:20,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 220.4) internal successors, (2204), 10 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:20,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:20,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:20,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:15:20,536 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:15:20,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:20,537 INFO L85 PathProgramCache]: Analyzing trace with hash -166419602, now seen corresponding path program 1 times [2023-11-12 02:15:20,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:20,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416263163] [2023-11-12 02:15:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:20,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:20,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:20,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416263163] [2023-11-12 02:15:20,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416263163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:20,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:20,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:20,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643437875] [2023-11-12 02:15:20,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:20,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:20,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:20,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:20,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:20,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 507 [2023-11-12 02:15:20,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 83 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:20,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:20,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 507 [2023-11-12 02:15:20,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:21,049 INFO L124 PetriNetUnfolderBase]: 977/1823 cut-off events. [2023-11-12 02:15:21,050 INFO L125 PetriNetUnfolderBase]: For 715/715 co-relation queries the response was YES. [2023-11-12 02:15:21,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4384 conditions, 1823 events. 977/1823 cut-off events. For 715/715 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7759 event pairs, 223 based on Foata normal form. 2/1684 useless extension candidates. Maximal degree in co-relation 4364. Up to 1347 conditions per place. [2023-11-12 02:15:21,059 INFO L140 encePairwiseOnDemand]: 501/507 looper letters, 76 selfloop transitions, 6 changer transitions 1/95 dead transitions. [2023-11-12 02:15:21,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 95 transitions, 637 flow [2023-11-12 02:15:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 835 transitions. [2023-11-12 02:15:21,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489809335963182 [2023-11-12 02:15:21,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 835 transitions. [2023-11-12 02:15:21,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 835 transitions. [2023-11-12 02:15:21,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:21,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 835 transitions. [2023-11-12 02:15:21,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:21,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:21,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:21,071 INFO L175 Difference]: Start difference. First operand has 94 places, 83 transitions, 434 flow. Second operand 3 states and 835 transitions. [2023-11-12 02:15:21,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 95 transitions, 637 flow [2023-11-12 02:15:21,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 95 transitions, 593 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-12 02:15:21,078 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 402 flow [2023-11-12 02:15:21,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2023-11-12 02:15:21,079 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 25 predicate places. [2023-11-12 02:15:21,080 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 402 flow [2023-11-12 02:15:21,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:21,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:21,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:21,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:15:21,081 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:15:21,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:21,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1037432260, now seen corresponding path program 1 times [2023-11-12 02:15:21,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:21,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919947415] [2023-11-12 02:15:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:21,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:22,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:22,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919947415] [2023-11-12 02:15:22,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919947415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:22,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:22,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 02:15:22,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61857913] [2023-11-12 02:15:22,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:22,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:15:22,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:15:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:15:23,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 507 [2023-11-12 02:15:23,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 402 flow. Second operand has 12 states, 12 states have (on average 222.91666666666666) internal successors, (2675), 12 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:23,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:23,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 507 [2023-11-12 02:15:23,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:24,232 INFO L124 PetriNetUnfolderBase]: 1015/1890 cut-off events. [2023-11-12 02:15:24,232 INFO L125 PetriNetUnfolderBase]: For 541/543 co-relation queries the response was YES. [2023-11-12 02:15:24,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4555 conditions, 1890 events. 1015/1890 cut-off events. For 541/543 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8078 event pairs, 452 based on Foata normal form. 0/1817 useless extension candidates. Maximal degree in co-relation 4535. Up to 1080 conditions per place. [2023-11-12 02:15:24,244 INFO L140 encePairwiseOnDemand]: 494/507 looper letters, 104 selfloop transitions, 26 changer transitions 11/148 dead transitions. [2023-11-12 02:15:24,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 148 transitions, 850 flow [2023-11-12 02:15:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:15:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:15:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2546 transitions. [2023-11-12 02:15:24,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45651784113322574 [2023-11-12 02:15:24,254 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2546 transitions. [2023-11-12 02:15:24,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2546 transitions. [2023-11-12 02:15:24,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:24,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2546 transitions. [2023-11-12 02:15:24,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 231.45454545454547) internal successors, (2546), 11 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:24,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 507.0) internal successors, (6084), 12 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:24,329 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 507.0) internal successors, (6084), 12 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:24,329 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 402 flow. Second operand 11 states and 2546 transitions. [2023-11-12 02:15:24,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 148 transitions, 850 flow [2023-11-12 02:15:24,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 148 transitions, 840 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:24,337 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 496 flow [2023-11-12 02:15:24,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=496, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2023-11-12 02:15:24,339 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 37 predicate places. [2023-11-12 02:15:24,339 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 496 flow [2023-11-12 02:15:24,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 222.91666666666666) internal successors, (2675), 12 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:24,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:24,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:24,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:15:24,341 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:15:24,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:24,342 INFO L85 PathProgramCache]: Analyzing trace with hash 646378870, now seen corresponding path program 2 times [2023-11-12 02:15:24,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:24,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137384971] [2023-11-12 02:15:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:24,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat