./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/twostage_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/twostage_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:48:08,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:08,832 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:48:08,836 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:08,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:08,861 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:08,862 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:08,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:08,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:48:08,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:48:08,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:08,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:08,866 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:08,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:08,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:48:08,868 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:48:08,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:08,869 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:48:08,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:08,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:48:08,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:48:08,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:48:08,872 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:48:08,872 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:48:08,873 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:48:08,873 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:48:08,874 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:08,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:08,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:08,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:48:08,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:08,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:08,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:48:08,878 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:48:08,878 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:08,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:48:08,879 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:48:08,880 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:48:08,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:48:08,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:48:08,881 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:48:08,882 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_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 [2023-11-19 07:48:09,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:09,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:09,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:09,200 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:09,202 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:09,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/twostage_3.i [2023-11-19 07:48:12,427 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:12,784 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:12,784 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/sv-benchmarks/c/pthread/twostage_3.i [2023-11-19 07:48:12,819 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu/data/d9b3a2158/091fdc31c11f49bc8a498fc309954f4e/FLAG2c039afb1 [2023-11-19 07:48:12,839 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu/data/d9b3a2158/091fdc31c11f49bc8a498fc309954f4e [2023-11-19 07:48:12,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:12,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:12,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:12,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:12,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:12,860 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:12" (1/1) ... [2023-11-19 07:48:12,861 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3001b363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:12, skipping insertion in model container [2023-11-19 07:48:12,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:12" (1/1) ... [2023-11-19 07:48:12,935 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:13,659 WARN L1588 CHandler]: Possible shadowing of function lock [2023-11-19 07:48:13,661 WARN L1588 CHandler]: Possible shadowing of function lock [2023-11-19 07:48:13,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:13,676 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:13,742 WARN L1588 CHandler]: Possible shadowing of function lock [2023-11-19 07:48:13,743 WARN L1588 CHandler]: Possible shadowing of function lock [2023-11-19 07:48:13,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:13,840 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:13,848 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:13,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:13 WrapperNode [2023-11-19 07:48:13,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:13,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:13,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:13,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:13,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:13" (1/1) ... [2023-11-19 07:48:13,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:13" (1/1) ... [2023-11-19 07:48:13,959 INFO L138 Inliner]: procedures = 374, calls = 63, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 228 [2023-11-19 07:48:13,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:13,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:13,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:13,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:13,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:13" (1/1) ... [2023-11-19 07:48:13,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:13" (1/1) ... [2023-11-19 07:48:13,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:13" (1/1) ... [2023-11-19 07:48:13,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:13" (1/1) ... [2023-11-19 07:48:14,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:13" (1/1) ... [2023-11-19 07:48:14,016 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:13" (1/1) ... [2023-11-19 07:48:14,019 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:13" (1/1) ... [2023-11-19 07:48:14,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:13" (1/1) ... [2023-11-19 07:48:14,026 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:14,027 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:14,027 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:14,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:14,028 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:13" (1/1) ... [2023-11-19 07:48:14,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:14,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:14,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:14,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6b9b210-2b87-4a40-b160-0120aefe0773/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:14,122 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2023-11-19 07:48:14,123 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2023-11-19 07:48:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2023-11-19 07:48:14,123 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2023-11-19 07:48:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-19 07:48:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:48:14,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:48:14,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:48:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:48:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:48:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:48:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:48:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:14,149 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:48:14,331 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:14,333 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:14,769 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:14,790 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:14,790 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:48:14,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:14 BoogieIcfgContainer [2023-11-19 07:48:14,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:14,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:14,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:14,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:14,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:12" (1/3) ... [2023-11-19 07:48:14,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b84d7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:14, skipping insertion in model container [2023-11-19 07:48:14,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:13" (2/3) ... [2023-11-19 07:48:14,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b84d7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:14, skipping insertion in model container [2023-11-19 07:48:14,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:14" (3/3) ... [2023-11-19 07:48:14,820 INFO L112 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2023-11-19 07:48:14,830 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:48:14,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:14,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 07:48:14,843 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:48:14,953 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:48:15,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 270 transitions, 560 flow [2023-11-19 07:48:15,194 INFO L124 PetriNetUnfolderBase]: 43/503 cut-off events. [2023-11-19 07:48:15,195 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:48:15,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 503 events. 43/503 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1907 event pairs, 0 based on Foata normal form. 0/430 useless extension candidates. Maximal degree in co-relation 266. Up to 8 conditions per place. [2023-11-19 07:48:15,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 270 transitions, 560 flow [2023-11-19 07:48:15,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 270 transitions, 560 flow [2023-11-19 07:48:15,230 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:48:15,255 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 270 transitions, 560 flow [2023-11-19 07:48:15,266 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 270 transitions, 560 flow [2023-11-19 07:48:15,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 270 transitions, 560 flow [2023-11-19 07:48:15,400 INFO L124 PetriNetUnfolderBase]: 43/503 cut-off events. [2023-11-19 07:48:15,400 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:48:15,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 503 events. 43/503 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1907 event pairs, 0 based on Foata normal form. 0/430 useless extension candidates. Maximal degree in co-relation 266. Up to 8 conditions per place. [2023-11-19 07:48:15,422 INFO L119 LiptonReduction]: Number of co-enabled transitions 11742 [2023-11-19 07:48:39,516 INFO L134 LiptonReduction]: Checked pairs total: 26863 [2023-11-19 07:48:39,517 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-11-19 07:48:39,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:39,540 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@363c053, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:39,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-19 07:48:39,546 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:48:39,547 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-19 07:48:39,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:39,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:39,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:48:39,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 07:48:39,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:39,553 INFO L85 PathProgramCache]: Analyzing trace with hash 30426888, now seen corresponding path program 1 times [2023-11-19 07:48:39,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:39,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892325293] [2023-11-19 07:48:39,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:39,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:39,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:39,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892325293] [2023-11-19 07:48:39,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892325293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:39,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:39,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:39,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746037675] [2023-11-19 07:48:39,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:39,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:40,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:40,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:40,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:40,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 554 [2023-11-19 07:48:40,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:40,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:40,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 554 [2023-11-19 07:48:40,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:40,579 INFO L124 PetriNetUnfolderBase]: 1116/1960 cut-off events. [2023-11-19 07:48:40,579 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-19 07:48:40,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3889 conditions, 1960 events. 1116/1960 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10942 event pairs, 518 based on Foata normal form. 0/1317 useless extension candidates. Maximal degree in co-relation 3424. Up to 1090 conditions per place. [2023-11-19 07:48:40,596 INFO L140 encePairwiseOnDemand]: 537/554 looper letters, 56 selfloop transitions, 9 changer transitions 2/77 dead transitions. [2023-11-19 07:48:40,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 77 transitions, 320 flow [2023-11-19 07:48:40,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 789 transitions. [2023-11-19 07:48:40,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4747292418772563 [2023-11-19 07:48:40,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 789 transitions. [2023-11-19 07:48:40,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 789 transitions. [2023-11-19 07:48:40,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:40,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 789 transitions. [2023-11-19 07:48:40,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:40,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:40,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:40,662 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 124 flow. Second operand 3 states and 789 transitions. [2023-11-19 07:48:40,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 77 transitions, 320 flow [2023-11-19 07:48:40,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:40,671 INFO L231 Difference]: Finished difference. Result has 52 places, 52 transitions, 176 flow [2023-11-19 07:48:40,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=52, PETRI_TRANSITIONS=52} [2023-11-19 07:48:40,679 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2023-11-19 07:48:40,679 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 176 flow [2023-11-19 07:48:40,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:40,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:40,680 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:48:40,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:48:40,681 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 07:48:40,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash -824504496, now seen corresponding path program 1 times [2023-11-19 07:48:40,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:40,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502893591] [2023-11-19 07:48:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:40,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:40,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:40,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:40,931 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:48:40,933 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-19 07:48:40,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-19 07:48:40,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-19 07:48:40,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-19 07:48:40,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-19 07:48:40,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-19 07:48:40,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-19 07:48:40,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-19 07:48:40,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-19 07:48:40,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-11-19 07:48:40,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-19 07:48:40,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2023-11-19 07:48:40,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-19 07:48:40,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-19 07:48:40,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-19 07:48:40,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-19 07:48:40,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-19 07:48:40,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-19 07:48:40,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:48:40,945 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:48:40,949 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:48:40,949 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:48:41,012 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-19 07:48:41,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 329 transitions, 702 flow [2023-11-19 07:48:41,339 INFO L124 PetriNetUnfolderBase]: 163/1539 cut-off events. [2023-11-19 07:48:41,339 INFO L125 PetriNetUnfolderBase]: For 72/73 co-relation queries the response was YES. [2023-11-19 07:48:41,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 1539 events. 163/1539 cut-off events. For 72/73 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9241 event pairs, 2 based on Foata normal form. 0/1297 useless extension candidates. Maximal degree in co-relation 902. Up to 32 conditions per place. [2023-11-19 07:48:41,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 329 transitions, 702 flow [2023-11-19 07:48:41,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 329 transitions, 702 flow [2023-11-19 07:48:41,373 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:48:41,374 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 329 transitions, 702 flow [2023-11-19 07:48:41,374 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 329 transitions, 702 flow [2023-11-19 07:48:41,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 329 transitions, 702 flow [2023-11-19 07:48:41,669 INFO L124 PetriNetUnfolderBase]: 163/1539 cut-off events. [2023-11-19 07:48:41,669 INFO L125 PetriNetUnfolderBase]: For 72/73 co-relation queries the response was YES. [2023-11-19 07:48:41,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 1539 events. 163/1539 cut-off events. For 72/73 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9241 event pairs, 2 based on Foata normal form. 0/1297 useless extension candidates. Maximal degree in co-relation 902. Up to 32 conditions per place. [2023-11-19 07:48:41,745 INFO L119 LiptonReduction]: Number of co-enabled transitions 30136 [2023-11-19 07:49:07,517 WARN L293 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 279 DAG size of output: 273 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)