./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:53:25,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:53:25,696 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:53:25,709 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:53:25,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:53:25,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:53:25,755 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:53:25,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:53:25,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:53:25,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:53:25,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:53:25,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:53:25,759 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:53:25,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:53:25,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:53:25,760 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:53:25,761 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:53:25,762 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:53:25,762 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:53:25,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:53:25,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:53:25,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:53:25,772 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:53:25,773 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:53:25,773 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:53:25,774 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:53:25,775 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:53:25,775 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:53:25,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:25,776 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:53:25,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:53:25,778 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:53:25,778 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:53:25,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:53:25,779 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:53:25,779 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:53:25,780 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:53:25,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:53:25,780 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:53:25,781 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_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db [2023-11-06 21:53:26,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:53:26,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:53:26,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:53:26,128 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:53:26,129 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:53:26,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2023-11-06 21:53:29,242 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:53:29,621 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:53:29,622 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2023-11-06 21:53:29,656 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/data/d6b75e901/4f41f2f5c7384cef92bc82a4b356e136/FLAGad6ba69cf [2023-11-06 21:53:29,680 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/data/d6b75e901/4f41f2f5c7384cef92bc82a4b356e136 [2023-11-06 21:53:29,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:53:29,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:53:29,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:29,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:53:29,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:53:29,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:29" (1/1) ... [2023-11-06 21:53:29,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3200ad84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:29, skipping insertion in model container [2023-11-06 21:53:29,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:29" (1/1) ... [2023-11-06 21:53:29,778 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:53:30,737 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_11d86150-e3ff-4fe8-b5f1-b615f0d82302/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2023-11-06 21:53:30,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:30,791 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:53:30,843 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_11d86150-e3ff-4fe8-b5f1-b615f0d82302/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2023-11-06 21:53:30,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:31,001 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:53:31,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31 WrapperNode [2023-11-06 21:53:31,002 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:31,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:31,004 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:53:31,004 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:53:31,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,050 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,097 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2023-11-06 21:53:31,098 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:31,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:53:31,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:53:31,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:53:31,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,122 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,143 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,155 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,163 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:53:31,164 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:53:31,164 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:53:31,164 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:53:31,165 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (1/1) ... [2023-11-06 21:53:31,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:31,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:31,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:53:31,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:53:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:53:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:53:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 21:53:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:53:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:53:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:53:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:53:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-06 21:53:31,264 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-06 21:53:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:53:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:53:31,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:53:31,268 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:53:31,599 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:53:31,601 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:53:31,868 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:53:31,878 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:53:31,879 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:53:31,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:31 BoogieIcfgContainer [2023-11-06 21:53:31,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:53:31,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:53:31,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:53:31,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:53:31,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:53:29" (1/3) ... [2023-11-06 21:53:31,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21766382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:31, skipping insertion in model container [2023-11-06 21:53:31,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:31" (2/3) ... [2023-11-06 21:53:31,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21766382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:31, skipping insertion in model container [2023-11-06 21:53:31,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:31" (3/3) ... [2023-11-06 21:53:31,891 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2023-11-06 21:53:31,901 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:53:31,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:53:31,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 21:53:31,913 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:53:32,037 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 21:53:32,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 197 transitions, 408 flow [2023-11-06 21:53:32,183 INFO L124 PetriNetUnfolderBase]: 10/243 cut-off events. [2023-11-06 21:53:32,184 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:53:32,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 243 events. 10/243 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 441 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 139. Up to 4 conditions per place. [2023-11-06 21:53:32,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 197 transitions, 408 flow [2023-11-06 21:53:32,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 181 transitions, 374 flow [2023-11-06 21:53:32,200 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:53:32,211 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 181 transitions, 374 flow [2023-11-06 21:53:32,214 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 181 transitions, 374 flow [2023-11-06 21:53:32,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 181 transitions, 374 flow [2023-11-06 21:53:32,263 INFO L124 PetriNetUnfolderBase]: 7/216 cut-off events. [2023-11-06 21:53:32,263 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:53:32,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 216 events. 7/216 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 366 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 125. Up to 4 conditions per place. [2023-11-06 21:53:32,268 INFO L119 LiptonReduction]: Number of co-enabled transitions 3536 [2023-11-06 21:53:50,337 INFO L134 LiptonReduction]: Checked pairs total: 7349 [2023-11-06 21:53:50,337 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-11-06 21:53:50,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:53:50,362 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@72adef27, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:53:50,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-06 21:53:50,364 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:53:50,364 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 21:53:50,364 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:53:50,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:50,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 21:53:50,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 21:53:50,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:50,372 INFO L85 PathProgramCache]: Analyzing trace with hash 671, now seen corresponding path program 1 times [2023-11-06 21:53:50,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:50,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301387695] [2023-11-06 21:53:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:50,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:50,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:50,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301387695] [2023-11-06 21:53:50,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301387695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:50,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:50,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:53:50,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945310617] [2023-11-06 21:53:50,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:50,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:53:50,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:53:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:53:50,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 395 [2023-11-06 21:53:50,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 181.5) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:50,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:50,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 395 [2023-11-06 21:53:50,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:50,972 INFO L124 PetriNetUnfolderBase]: 217/420 cut-off events. [2023-11-06 21:53:50,972 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-06 21:53:50,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 420 events. 217/420 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1982 event pairs, 216 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 739. Up to 391 conditions per place. [2023-11-06 21:53:50,984 INFO L140 encePairwiseOnDemand]: 392/395 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-11-06 21:53:50,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2023-11-06 21:53:50,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:53:50,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 21:53:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 390 transitions. [2023-11-06 21:53:51,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4936708860759494 [2023-11-06 21:53:51,015 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 390 transitions. [2023-11-06 21:53:51,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 390 transitions. [2023-11-06 21:53:51,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:51,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 390 transitions. [2023-11-06 21:53:51,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 195.0) internal successors, (390), 2 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:51,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:51,039 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:51,041 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 390 transitions. [2023-11-06 21:53:51,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2023-11-06 21:53:51,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 21:53:51,049 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-11-06 21:53:51,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-11-06 21:53:51,057 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-06 21:53:51,058 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-11-06 21:53:51,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 181.5) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:51,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:51,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 21:53:51,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:53:51,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 21:53:51,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:51,062 INFO L85 PathProgramCache]: Analyzing trace with hash 20753102, now seen corresponding path program 1 times [2023-11-06 21:53:51,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:51,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927116438] [2023-11-06 21:53:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:51,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:51,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:51,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927116438] [2023-11-06 21:53:51,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927116438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:51,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:51,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:53:51,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954797172] [2023-11-06 21:53:51,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:51,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:51,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:51,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:51,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:51,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 395 [2023-11-06 21:53:51,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:51,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:51,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 395 [2023-11-06 21:53:51,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:51,907 INFO L124 PetriNetUnfolderBase]: 344/670 cut-off events. [2023-11-06 21:53:51,907 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 21:53:51,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 670 events. 344/670 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3509 event pairs, 183 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 1288. Up to 453 conditions per place. [2023-11-06 21:53:51,912 INFO L140 encePairwiseOnDemand]: 387/395 looper letters, 29 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-11-06 21:53:51,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 154 flow [2023-11-06 21:53:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:53:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2023-11-06 21:53:51,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489451476793249 [2023-11-06 21:53:51,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2023-11-06 21:53:51,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2023-11-06 21:53:51,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:51,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2023-11-06 21:53:51,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:51,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:51,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:51,924 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 532 transitions. [2023-11-06 21:53:51,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 154 flow [2023-11-06 21:53:51,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:53:51,926 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-11-06 21:53:51,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-11-06 21:53:51,927 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-11-06 21:53:51,927 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-11-06 21:53:51,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:51,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:51,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:53:51,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:53:51,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 21:53:51,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:51,929 INFO L85 PathProgramCache]: Analyzing trace with hash 643345843, now seen corresponding path program 1 times [2023-11-06 21:53:51,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:51,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440199323] [2023-11-06 21:53:51,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:51,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:52,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:52,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440199323] [2023-11-06 21:53:52,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440199323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:52,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:52,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:53:52,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108579177] [2023-11-06 21:53:52,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:52,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:52,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:52,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:52,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:52,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 395 [2023-11-06 21:53:52,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:52,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:52,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 395 [2023-11-06 21:53:52,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:52,554 INFO L124 PetriNetUnfolderBase]: 483/889 cut-off events. [2023-11-06 21:53:52,554 INFO L125 PetriNetUnfolderBase]: For 370/379 co-relation queries the response was YES. [2023-11-06 21:53:52,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 889 events. 483/889 cut-off events. For 370/379 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4578 event pairs, 257 based on Foata normal form. 26/907 useless extension candidates. Maximal degree in co-relation 2323. Up to 669 conditions per place. [2023-11-06 21:53:52,562 INFO L140 encePairwiseOnDemand]: 388/395 looper letters, 35 selfloop transitions, 9 changer transitions 2/48 dead transitions. [2023-11-06 21:53:52,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 262 flow [2023-11-06 21:53:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:52,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:53:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2023-11-06 21:53:52,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44978902953586497 [2023-11-06 21:53:52,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2023-11-06 21:53:52,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2023-11-06 21:53:52,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:52,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2023-11-06 21:53:52,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:52,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:52,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:52,575 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 533 transitions. [2023-11-06 21:53:52,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 262 flow [2023-11-06 21:53:52,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:53:52,585 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2023-11-06 21:53:52,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-11-06 21:53:52,587 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-11-06 21:53:52,590 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2023-11-06 21:53:52,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:52,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:52,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:52,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:53:52,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 21:53:52,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:52,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1855865082, now seen corresponding path program 1 times [2023-11-06 21:53:52,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:52,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931136835] [2023-11-06 21:53:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:52,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:52,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:52,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931136835] [2023-11-06 21:53:52,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931136835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:52,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:52,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:53:52,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555297095] [2023-11-06 21:53:52,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:52,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:52,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:52,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:52,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 395 [2023-11-06 21:53:52,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:52,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:52,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 395 [2023-11-06 21:53:52,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:52,958 INFO L124 PetriNetUnfolderBase]: 101/204 cut-off events. [2023-11-06 21:53:52,959 INFO L125 PetriNetUnfolderBase]: For 167/191 co-relation queries the response was YES. [2023-11-06 21:53:52,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 204 events. 101/204 cut-off events. For 167/191 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 731 event pairs, 37 based on Foata normal form. 22/214 useless extension candidates. Maximal degree in co-relation 523. Up to 141 conditions per place. [2023-11-06 21:53:52,961 INFO L140 encePairwiseOnDemand]: 393/395 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-06 21:53:52,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2023-11-06 21:53:52,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:52,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:53:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 549 transitions. [2023-11-06 21:53:52,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46329113924050636 [2023-11-06 21:53:52,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 549 transitions. [2023-11-06 21:53:52,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 549 transitions. [2023-11-06 21:53:52,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:52,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 549 transitions. [2023-11-06 21:53:52,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:52,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:52,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:52,973 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 549 transitions. [2023-11-06 21:53:52,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2023-11-06 21:53:52,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-06 21:53:52,976 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2023-11-06 21:53:52,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-11-06 21:53:52,977 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-06 21:53:52,977 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2023-11-06 21:53:52,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:52,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:52,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:52,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:53:52,979 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 21:53:52,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:52,979 INFO L85 PathProgramCache]: Analyzing trace with hash 377955084, now seen corresponding path program 1 times [2023-11-06 21:53:52,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:52,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459642399] [2023-11-06 21:53:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:52,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:53,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:53,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459642399] [2023-11-06 21:53:53,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459642399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:53,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:53,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:53:53,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925150692] [2023-11-06 21:53:53,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:53,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:53:53,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:53:53,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:53:53,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 395 [2023-11-06 21:53:53,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:53,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:53:53,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 395 [2023-11-06 21:53:53,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:53:54,141 INFO L124 PetriNetUnfolderBase]: 111/230 cut-off events. [2023-11-06 21:53:54,141 INFO L125 PetriNetUnfolderBase]: For 77/85 co-relation queries the response was YES. [2023-11-06 21:53:54,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 230 events. 111/230 cut-off events. For 77/85 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 927 event pairs, 9 based on Foata normal form. 6/231 useless extension candidates. Maximal degree in co-relation 543. Up to 155 conditions per place. [2023-11-06 21:53:54,144 INFO L140 encePairwiseOnDemand]: 388/395 looper letters, 31 selfloop transitions, 10 changer transitions 0/44 dead transitions. [2023-11-06 21:53:54,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 205 flow [2023-11-06 21:53:54,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:53:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:53:54,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1075 transitions. [2023-11-06 21:53:54,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45358649789029537 [2023-11-06 21:53:54,150 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1075 transitions. [2023-11-06 21:53:54,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1075 transitions. [2023-11-06 21:53:54,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:53:54,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1075 transitions. [2023-11-06 21:53:54,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.16666666666666) internal successors, (1075), 6 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:54,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 395.0) internal successors, (2765), 7 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:54,163 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 395.0) internal successors, (2765), 7 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:54,164 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 6 states and 1075 transitions. [2023-11-06 21:53:54,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 205 flow [2023-11-06 21:53:54,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:53:54,166 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 128 flow [2023-11-06 21:53:54,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-06 21:53:54,167 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-11-06 21:53:54,167 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 128 flow [2023-11-06 21:53:54,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:54,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:53:54,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:54,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:53:54,170 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 21:53:54,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash 854321236, now seen corresponding path program 2 times [2023-11-06 21:53:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:54,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127881949] [2023-11-06 21:53:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:54,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:58,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:58,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127881949] [2023-11-06 21:53:58,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127881949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:58,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:58,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-06 21:53:58,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765008602] [2023-11-06 21:53:58,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:58,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:53:58,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:58,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:53:58,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:54:01,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 395 [2023-11-06 21:54:01,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 128 flow. Second operand has 17 states, 17 states have (on average 147.23529411764707) internal successors, (2503), 17 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:01,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:01,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 395 [2023-11-06 21:54:01,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:03,051 INFO L124 PetriNetUnfolderBase]: 219/427 cut-off events. [2023-11-06 21:54:03,052 INFO L125 PetriNetUnfolderBase]: For 257/257 co-relation queries the response was YES. [2023-11-06 21:54:03,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 427 events. 219/427 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1632 event pairs, 33 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 1306. Up to 292 conditions per place. [2023-11-06 21:54:03,056 INFO L140 encePairwiseOnDemand]: 379/395 looper letters, 68 selfloop transitions, 50 changer transitions 0/118 dead transitions. [2023-11-06 21:54:03,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 118 transitions, 724 flow [2023-11-06 21:54:03,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 21:54:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-06 21:54:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3171 transitions. [2023-11-06 21:54:03,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822784810126582 [2023-11-06 21:54:03,069 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3171 transitions. [2023-11-06 21:54:03,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3171 transitions. [2023-11-06 21:54:03,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:03,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3171 transitions. [2023-11-06 21:54:03,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 151.0) internal successors, (3171), 21 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:03,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 395.0) internal successors, (8690), 22 states have internal predecessors, (8690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:03,106 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 395.0) internal successors, (8690), 22 states have internal predecessors, (8690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:03,107 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 128 flow. Second operand 21 states and 3171 transitions. [2023-11-06 21:54:03,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 118 transitions, 724 flow [2023-11-06 21:54:03,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 118 transitions, 724 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:54:03,112 INFO L231 Difference]: Finished difference. Result has 68 places, 83 transitions, 552 flow [2023-11-06 21:54:03,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=552, PETRI_PLACES=68, PETRI_TRANSITIONS=83} [2023-11-06 21:54:03,115 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-11-06 21:54:03,116 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 83 transitions, 552 flow [2023-11-06 21:54:03,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 147.23529411764707) internal successors, (2503), 17 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:03,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:03,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:03,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:54:03,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 21:54:03,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:03,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1136788016, now seen corresponding path program 3 times [2023-11-06 21:54:03,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:03,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426297209] [2023-11-06 21:54:03,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:03,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:05,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:05,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426297209] [2023-11-06 21:54:05,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426297209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:05,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:05,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-06 21:54:05,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899934601] [2023-11-06 21:54:05,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:05,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:54:05,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:05,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:54:05,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:54:08,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 395 [2023-11-06 21:54:08,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 83 transitions, 552 flow. Second operand has 17 states, 17 states have (on average 147.23529411764707) internal successors, (2503), 17 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:08,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:08,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 395 [2023-11-06 21:54:08,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:10,168 INFO L124 PetriNetUnfolderBase]: 266/542 cut-off events. [2023-11-06 21:54:10,168 INFO L125 PetriNetUnfolderBase]: For 937/937 co-relation queries the response was YES. [2023-11-06 21:54:10,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 542 events. 266/542 cut-off events. For 937/937 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2342 event pairs, 41 based on Foata normal form. 1/542 useless extension candidates. Maximal degree in co-relation 2235. Up to 403 conditions per place. [2023-11-06 21:54:10,175 INFO L140 encePairwiseOnDemand]: 379/395 looper letters, 107 selfloop transitions, 51 changer transitions 0/158 dead transitions. [2023-11-06 21:54:10,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 158 transitions, 1338 flow [2023-11-06 21:54:10,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 21:54:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 21:54:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2285 transitions. [2023-11-06 21:54:10,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856540084388186 [2023-11-06 21:54:10,185 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2285 transitions. [2023-11-06 21:54:10,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2285 transitions. [2023-11-06 21:54:10,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:10,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2285 transitions. [2023-11-06 21:54:10,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 152.33333333333334) internal successors, (2285), 15 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:10,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 395.0) internal successors, (6320), 16 states have internal predecessors, (6320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:10,208 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 395.0) internal successors, (6320), 16 states have internal predecessors, (6320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:10,208 INFO L175 Difference]: Start difference. First operand has 68 places, 83 transitions, 552 flow. Second operand 15 states and 2285 transitions. [2023-11-06 21:54:10,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 158 transitions, 1338 flow [2023-11-06 21:54:10,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 158 transitions, 1246 flow, removed 45 selfloop flow, removed 2 redundant places. [2023-11-06 21:54:10,221 INFO L231 Difference]: Finished difference. Result has 87 places, 115 transitions, 897 flow [2023-11-06 21:54:10,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=897, PETRI_PLACES=87, PETRI_TRANSITIONS=115} [2023-11-06 21:54:10,223 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 51 predicate places. [2023-11-06 21:54:10,225 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 115 transitions, 897 flow [2023-11-06 21:54:10,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 147.23529411764707) internal successors, (2503), 17 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:10,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:10,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:10,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:54:10,227 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 21:54:10,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:10,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1288457853, now seen corresponding path program 1 times [2023-11-06 21:54:10,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:10,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857645259] [2023-11-06 21:54:10,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:10,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:11,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:11,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857645259] [2023-11-06 21:54:11,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857645259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:11,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:11,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:54:11,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051836304] [2023-11-06 21:54:11,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:11,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:54:11,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:11,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:54:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:54:11,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 395 [2023-11-06 21:54:11,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 115 transitions, 897 flow. Second operand has 8 states, 8 states have (on average 157.25) internal successors, (1258), 8 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:11,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:11,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 395 [2023-11-06 21:54:11,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:12,299 INFO L124 PetriNetUnfolderBase]: 256/611 cut-off events. [2023-11-06 21:54:12,299 INFO L125 PetriNetUnfolderBase]: For 1334/1344 co-relation queries the response was YES. [2023-11-06 21:54:12,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 611 events. 256/611 cut-off events. For 1334/1344 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3341 event pairs, 11 based on Foata normal form. 8/617 useless extension candidates. Maximal degree in co-relation 2510. Up to 196 conditions per place. [2023-11-06 21:54:12,308 INFO L140 encePairwiseOnDemand]: 385/395 looper letters, 89 selfloop transitions, 83 changer transitions 6/190 dead transitions. [2023-11-06 21:54:12,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 190 transitions, 1758 flow [2023-11-06 21:54:12,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:54:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 21:54:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1619 transitions. [2023-11-06 21:54:12,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409873417721519 [2023-11-06 21:54:12,316 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1619 transitions. [2023-11-06 21:54:12,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1619 transitions. [2023-11-06 21:54:12,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:12,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1619 transitions. [2023-11-06 21:54:12,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.9) internal successors, (1619), 10 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:12,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 395.0) internal successors, (4345), 11 states have internal predecessors, (4345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:12,331 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 395.0) internal successors, (4345), 11 states have internal predecessors, (4345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:12,332 INFO L175 Difference]: Start difference. First operand has 87 places, 115 transitions, 897 flow. Second operand 10 states and 1619 transitions. [2023-11-06 21:54:12,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 190 transitions, 1758 flow [2023-11-06 21:54:12,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 190 transitions, 1727 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-06 21:54:12,355 INFO L231 Difference]: Finished difference. Result has 93 places, 138 transitions, 1291 flow [2023-11-06 21:54:12,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1291, PETRI_PLACES=93, PETRI_TRANSITIONS=138} [2023-11-06 21:54:12,358 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 57 predicate places. [2023-11-06 21:54:12,359 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 138 transitions, 1291 flow [2023-11-06 21:54:12,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 157.25) internal successors, (1258), 8 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:12,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:12,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:12,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:54:12,360 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 21:54:12,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:12,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1488735444, now seen corresponding path program 4 times [2023-11-06 21:54:12,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:12,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150334030] [2023-11-06 21:54:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:12,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:15,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:15,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150334030] [2023-11-06 21:54:15,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150334030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:15,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:15,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-06 21:54:15,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495838010] [2023-11-06 21:54:15,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:15,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:54:15,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:15,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:54:15,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:54:17,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 395 [2023-11-06 21:54:17,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 138 transitions, 1291 flow. Second operand has 17 states, 17 states have (on average 147.23529411764707) internal successors, (2503), 17 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:17,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:17,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 395 [2023-11-06 21:54:17,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:19,372 INFO L124 PetriNetUnfolderBase]: 382/835 cut-off events. [2023-11-06 21:54:19,373 INFO L125 PetriNetUnfolderBase]: For 2526/2526 co-relation queries the response was YES. [2023-11-06 21:54:19,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3879 conditions, 835 events. 382/835 cut-off events. For 2526/2526 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4491 event pairs, 90 based on Foata normal form. 3/837 useless extension candidates. Maximal degree in co-relation 3849. Up to 682 conditions per place. [2023-11-06 21:54:19,385 INFO L140 encePairwiseOnDemand]: 379/395 looper letters, 149 selfloop transitions, 49 changer transitions 2/200 dead transitions. [2023-11-06 21:54:19,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 200 transitions, 2158 flow [2023-11-06 21:54:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 21:54:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 21:54:19,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2418 transitions. [2023-11-06 21:54:19,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38259493670886074 [2023-11-06 21:54:19,396 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2418 transitions. [2023-11-06 21:54:19,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2418 transitions. [2023-11-06 21:54:19,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:19,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2418 transitions. [2023-11-06 21:54:19,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 151.125) internal successors, (2418), 16 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:19,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 395.0) internal successors, (6715), 17 states have internal predecessors, (6715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:19,436 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 395.0) internal successors, (6715), 17 states have internal predecessors, (6715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:19,436 INFO L175 Difference]: Start difference. First operand has 93 places, 138 transitions, 1291 flow. Second operand 16 states and 2418 transitions. [2023-11-06 21:54:19,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 200 transitions, 2158 flow [2023-11-06 21:54:19,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 200 transitions, 2026 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-11-06 21:54:19,461 INFO L231 Difference]: Finished difference. Result has 110 places, 164 transitions, 1572 flow [2023-11-06 21:54:19,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1572, PETRI_PLACES=110, PETRI_TRANSITIONS=164} [2023-11-06 21:54:19,462 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 74 predicate places. [2023-11-06 21:54:19,463 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 164 transitions, 1572 flow [2023-11-06 21:54:19,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 147.23529411764707) internal successors, (2503), 17 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:19,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:19,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:19,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:54:19,464 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 21:54:19,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash 754546922, now seen corresponding path program 5 times [2023-11-06 21:54:19,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:19,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569186769] [2023-11-06 21:54:19,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:19,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:19,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:19,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:19,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569186769] [2023-11-06 21:54:19,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569186769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:19,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:19,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:54:19,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070547229] [2023-11-06 21:54:19,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:19,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:54:19,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:19,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:54:19,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:19,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 395 [2023-11-06 21:54:19,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 164 transitions, 1572 flow. Second operand has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:19,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:19,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 395 [2023-11-06 21:54:19,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:20,333 INFO L124 PetriNetUnfolderBase]: 292/735 cut-off events. [2023-11-06 21:54:20,334 INFO L125 PetriNetUnfolderBase]: For 2466/2490 co-relation queries the response was YES. [2023-11-06 21:54:20,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3548 conditions, 735 events. 292/735 cut-off events. For 2466/2490 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4469 event pairs, 38 based on Foata normal form. 27/756 useless extension candidates. Maximal degree in co-relation 3511. Up to 289 conditions per place. [2023-11-06 21:54:20,345 INFO L140 encePairwiseOnDemand]: 388/395 looper letters, 113 selfloop transitions, 66 changer transitions 0/197 dead transitions. [2023-11-06 21:54:20,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 197 transitions, 2187 flow [2023-11-06 21:54:20,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:54:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:54:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1250 transitions. [2023-11-06 21:54:20,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45207956600361665 [2023-11-06 21:54:20,351 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1250 transitions. [2023-11-06 21:54:20,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1250 transitions. [2023-11-06 21:54:20,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:20,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1250 transitions. [2023-11-06 21:54:20,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.57142857142858) internal successors, (1250), 7 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:20,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:20,362 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:20,362 INFO L175 Difference]: Start difference. First operand has 110 places, 164 transitions, 1572 flow. Second operand 7 states and 1250 transitions. [2023-11-06 21:54:20,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 197 transitions, 2187 flow [2023-11-06 21:54:20,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 197 transitions, 2139 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-11-06 21:54:20,382 INFO L231 Difference]: Finished difference. Result has 116 places, 173 transitions, 1798 flow [2023-11-06 21:54:20,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1798, PETRI_PLACES=116, PETRI_TRANSITIONS=173} [2023-11-06 21:54:20,384 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 80 predicate places. [2023-11-06 21:54:20,385 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 173 transitions, 1798 flow [2023-11-06 21:54:20,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:20,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:20,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:20,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:54:20,386 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 21:54:20,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1028966077, now seen corresponding path program 2 times [2023-11-06 21:54:20,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:20,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360360550] [2023-11-06 21:54:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:20,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:21,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:21,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360360550] [2023-11-06 21:54:21,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360360550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:21,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:21,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:54:21,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142149689] [2023-11-06 21:54:21,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:21,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:54:21,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:21,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:54:21,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:54:21,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 395 [2023-11-06 21:54:21,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 173 transitions, 1798 flow. Second operand has 8 states, 8 states have (on average 159.25) internal successors, (1274), 8 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:21,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 395 [2023-11-06 21:54:21,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:22,326 INFO L124 PetriNetUnfolderBase]: 334/889 cut-off events. [2023-11-06 21:54:22,327 INFO L125 PetriNetUnfolderBase]: For 3464/3480 co-relation queries the response was YES. [2023-11-06 21:54:22,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 889 events. 334/889 cut-off events. For 3464/3480 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5966 event pairs, 54 based on Foata normal form. 20/905 useless extension candidates. Maximal degree in co-relation 4455. Up to 314 conditions per place. [2023-11-06 21:54:22,340 INFO L140 encePairwiseOnDemand]: 386/395 looper letters, 120 selfloop transitions, 87 changer transitions 4/228 dead transitions. [2023-11-06 21:54:22,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 228 transitions, 2604 flow [2023-11-06 21:54:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:54:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 21:54:22,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1476 transitions. [2023-11-06 21:54:22,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4151898734177215 [2023-11-06 21:54:22,347 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1476 transitions. [2023-11-06 21:54:22,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1476 transitions. [2023-11-06 21:54:22,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:22,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1476 transitions. [2023-11-06 21:54:22,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 164.0) internal successors, (1476), 9 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:22,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:22,359 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:22,359 INFO L175 Difference]: Start difference. First operand has 116 places, 173 transitions, 1798 flow. Second operand 9 states and 1476 transitions. [2023-11-06 21:54:22,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 228 transitions, 2604 flow [2023-11-06 21:54:22,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 228 transitions, 2547 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-06 21:54:22,388 INFO L231 Difference]: Finished difference. Result has 124 places, 180 transitions, 2076 flow [2023-11-06 21:54:22,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2076, PETRI_PLACES=124, PETRI_TRANSITIONS=180} [2023-11-06 21:54:22,389 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 88 predicate places. [2023-11-06 21:54:22,389 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 180 transitions, 2076 flow [2023-11-06 21:54:22,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.25) internal successors, (1274), 8 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:22,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:22,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:22,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:54:22,390 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-06 21:54:22,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:22,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1590408898, now seen corresponding path program 6 times [2023-11-06 21:54:22,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:22,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42908773] [2023-11-06 21:54:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:22,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:23,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:54:23,686 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-06 21:54:23,689 INFO L158 Benchmark]: Toolchain (without parser) took 53999.30ms. Allocated memory was 207.6MB in the beginning and 453.0MB in the end (delta: 245.4MB). Free memory was 156.1MB in the beginning and 268.1MB in the end (delta: -112.0MB). Peak memory consumption was 259.8MB. Max. memory is 16.1GB. [2023-11-06 21:54:23,690 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 134.2MB. Free memory was 77.1MB in the beginning and 77.0MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:54:23,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1310.51ms. Allocated memory is still 207.6MB. Free memory was 156.1MB in the beginning and 99.5MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2023-11-06 21:54:23,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.35ms. Allocated memory is still 207.6MB. Free memory was 99.5MB in the beginning and 95.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:54:23,691 INFO L158 Benchmark]: Boogie Preprocessor took 64.87ms. Allocated memory is still 207.6MB. Free memory was 95.3MB in the beginning and 93.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:54:23,691 INFO L158 Benchmark]: RCFGBuilder took 717.72ms. Allocated memory is still 207.6MB. Free memory was 93.2MB in the beginning and 68.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-06 21:54:23,691 INFO L158 Benchmark]: TraceAbstraction took 51803.90ms. Allocated memory was 207.6MB in the beginning and 453.0MB in the end (delta: 245.4MB). Free memory was 68.1MB in the beginning and 268.1MB in the end (delta: -200.0MB). Peak memory consumption was 171.7MB. Max. memory is 16.1GB. [2023-11-06 21:54:23,693 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 134.2MB. Free memory was 77.1MB in the beginning and 77.0MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1310.51ms. Allocated memory is still 207.6MB. Free memory was 156.1MB in the beginning and 99.5MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.35ms. Allocated memory is still 207.6MB. Free memory was 99.5MB in the beginning and 95.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.87ms. Allocated memory is still 207.6MB. Free memory was 95.3MB in the beginning and 93.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 717.72ms. Allocated memory is still 207.6MB. Free memory was 93.2MB in the beginning and 68.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 51803.90ms. Allocated memory was 207.6MB in the beginning and 453.0MB in the end (delta: 245.4MB). Free memory was 68.1MB in the beginning and 268.1MB in the end (delta: -200.0MB). Peak memory consumption was 171.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.1s, 181 PlacesBefore, 36 PlacesAfterwards, 181 TransitionsBefore, 32 TransitionsAfterwards, 3536 CoEnabledTransitionPairs, 9 FixpointIterations, 110 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 198 TotalNumberOfCompositions, 7349 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3602, independent: 3341, independent conditional: 0, independent unconditional: 3341, dependent: 261, dependent conditional: 0, dependent unconditional: 261, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1939, independent: 1897, independent conditional: 0, independent unconditional: 1897, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3602, independent: 1444, independent conditional: 0, independent unconditional: 1444, dependent: 219, dependent conditional: 0, dependent unconditional: 219, unknown: 1939, unknown conditional: 0, unknown unconditional: 1939] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-11-06 21:54:23,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:54:26,442 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:54:26,570 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-06 21:54:26,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:54:26,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:54:26,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:54:26,627 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:54:26,628 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:54:26,629 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:54:26,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:54:26,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:54:26,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:54:26,636 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:54:26,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:54:26,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:54:26,639 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:54:26,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:54:26,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:54:26,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:54:26,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:54:26,642 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:54:26,642 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:54:26,643 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:54:26,643 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:54:26,643 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:54:26,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:54:26,644 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:54:26,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:54:26,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:54:26,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:54:26,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:26,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:54:26,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:54:26,648 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:54:26,648 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 21:54:26,649 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:54:26,649 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:54:26,649 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:54:26,649 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:54:26,650 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:54:26,651 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 21:54:26,651 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:54:26,651 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_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db [2023-11-06 21:54:27,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:54:27,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:54:27,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:54:27,153 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:54:27,153 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:54:27,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2023-11-06 21:54:30,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:54:30,935 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:54:30,937 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2023-11-06 21:54:30,971 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/data/d2732a08e/3ba4d193bab545039347e7627ad93826/FLAGa6ab6a4c5 [2023-11-06 21:54:30,985 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/data/d2732a08e/3ba4d193bab545039347e7627ad93826 [2023-11-06 21:54:30,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:54:30,989 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:54:30,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:30,991 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:54:30,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:54:30,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:54:30" (1/1) ... [2023-11-06 21:54:30,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181a2043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:30, skipping insertion in model container [2023-11-06 21:54:30,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:54:30" (1/1) ... [2023-11-06 21:54:31,075 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:54:31,950 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_11d86150-e3ff-4fe8-b5f1-b615f0d82302/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2023-11-06 21:54:32,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:32,018 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 21:54:32,040 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:54:32,108 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_11d86150-e3ff-4fe8-b5f1-b615f0d82302/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2023-11-06 21:54:32,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:32,148 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:54:32,203 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_11d86150-e3ff-4fe8-b5f1-b615f0d82302/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2023-11-06 21:54:32,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:32,434 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:54:32,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:32 WrapperNode [2023-11-06 21:54:32,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:32,437 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:32,438 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:54:32,438 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:54:32,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:32" (1/1) ... [2023-11-06 21:54:32,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:32" (1/1) ... [2023-11-06 21:54:32,553 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 132 [2023-11-06 21:54:32,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:32,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:54:32,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:54:32,556 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:54:32,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:32" (1/1) ... [2023-11-06 21:54:32,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:32" (1/1) ... [2023-11-06 21:54:32,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:32" (1/1) ... [2023-11-06 21:54:32,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:32" (1/1) ... [2023-11-06 21:54:32,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:32" (1/1) ... [2023-11-06 21:54:32,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:32" (1/1) ... [2023-11-06 21:54:32,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:32" (1/1) ... [2023-11-06 21:54:32,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:32" (1/1) ... [2023-11-06 21:54:32,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:54:32,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:54:32,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:54:32,621 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:54:32,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:32" (1/1) ... [2023-11-06 21:54:32,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:32,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:32,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:54:32,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d86150-e3ff-4fe8-b5f1-b615f0d82302/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:54:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:54:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:54:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-06 21:54:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 21:54:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:54:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:54:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:54:32,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:54:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 21:54:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-06 21:54:32,718 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-06 21:54:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:54:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 21:54:32,720 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:54:33,085 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:54:33,087 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:54:33,563 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:54:33,571 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:54:33,572 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:54:33,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:33 BoogieIcfgContainer [2023-11-06 21:54:33,575 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:54:33,577 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:54:33,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:54:33,581 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:54:33,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:54:30" (1/3) ... [2023-11-06 21:54:33,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a34450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:33, skipping insertion in model container [2023-11-06 21:54:33,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:32" (2/3) ... [2023-11-06 21:54:33,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a34450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:33, skipping insertion in model container [2023-11-06 21:54:33,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:33" (3/3) ... [2023-11-06 21:54:33,584 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2023-11-06 21:54:33,594 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:54:33,605 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:54:33,605 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 21:54:33,605 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:54:33,738 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 21:54:33,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 195 transitions, 404 flow [2023-11-06 21:54:33,931 INFO L124 PetriNetUnfolderBase]: 10/240 cut-off events. [2023-11-06 21:54:33,931 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:54:33,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 240 events. 10/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 441 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 137. Up to 4 conditions per place. [2023-11-06 21:54:33,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 195 transitions, 404 flow [2023-11-06 21:54:33,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 179 transitions, 370 flow [2023-11-06 21:54:33,954 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:54:33,970 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 179 transitions, 370 flow [2023-11-06 21:54:33,974 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 179 transitions, 370 flow [2023-11-06 21:54:33,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 179 transitions, 370 flow [2023-11-06 21:54:34,056 INFO L124 PetriNetUnfolderBase]: 7/213 cut-off events. [2023-11-06 21:54:34,057 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:54:34,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 213 events. 7/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 364 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2023-11-06 21:54:34,063 INFO L119 LiptonReduction]: Number of co-enabled transitions 3468 [2023-11-06 21:54:57,064 WARN L293 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 121 DAG size of output: 109 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:55:43,385 WARN L293 SmtUtils]: Spent 13.97s on a formula simplification that was a NOOP. DAG size: 203 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:55:57,866 WARN L293 SmtUtils]: Spent 14.48s on a formula simplification that was a NOOP. DAG size: 203 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:56:14,173 WARN L293 SmtUtils]: Spent 16.30s on a formula simplification that was a NOOP. DAG size: 210 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:56:29,400 WARN L293 SmtUtils]: Spent 15.23s on a formula simplification that was a NOOP. DAG size: 210 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:56:44,961 WARN L293 SmtUtils]: Spent 14.79s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:56:54,887 WARN L293 SmtUtils]: Spent 9.92s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)