./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:06:29,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:06:29,226 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:06:29,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:06:29,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:06:29,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:06:29,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:06:29,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:06:29,253 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:06:29,253 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:06:29,253 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:06:29,253 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:06:29,253 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:06:29,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:06:29,254 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:06:29,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:06:29,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:06:29,254 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:06:29,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:06:29,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:06:29,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:06:29,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:06:29,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:06:29,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:06:29,254 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:06:29,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:06:29,255 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:06:29,255 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:06:29,255 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:06:29,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:06:29,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:06:29,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:06:29,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:06:29,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:06:29,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:06:29,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:06:29,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:06:29,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:06:29,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:06:29,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:06:29,256 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:06:29,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:06:29,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:06:29,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:06:29,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:06:29,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:06:29,256 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:06:29,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:06:29,256 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 [2024-12-02 11:06:29,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:06:29,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:06:29,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:06:29,495 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:06:29,495 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:06:29,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2024-12-02 11:06:32,196 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1/data/5b4be80db/c1dedf12a86e4b0088e60bc52fa66b81/FLAG1ec6ebef4 [2024-12-02 11:06:32,441 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:06:32,441 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2024-12-02 11:06:32,453 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1/data/5b4be80db/c1dedf12a86e4b0088e60bc52fa66b81/FLAG1ec6ebef4 [2024-12-02 11:06:32,758 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1/data/5b4be80db/c1dedf12a86e4b0088e60bc52fa66b81 [2024-12-02 11:06:32,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:06:32,761 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:06:32,762 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:06:32,762 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:06:32,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:06:32,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:06:32" (1/1) ... [2024-12-02 11:06:32,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65da5740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:32, skipping insertion in model container [2024-12-02 11:06:32,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:06:32" (1/1) ... [2024-12-02 11:06:32,794 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:06:33,076 WARN L250 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_80b850ea-1c93-428b-9bdd-216a26876d74/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2024-12-02 11:06:33,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:06:33,116 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:06:33,155 WARN L250 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_80b850ea-1c93-428b-9bdd-216a26876d74/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2024-12-02 11:06:33,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:06:33,206 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:06:33,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33 WrapperNode [2024-12-02 11:06:33,207 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:06:33,207 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:06:33,207 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:06:33,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:06:33,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (1/1) ... [2024-12-02 11:06:33,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (1/1) ... [2024-12-02 11:06:33,246 INFO L138 Inliner]: procedures = 272, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 214 [2024-12-02 11:06:33,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:06:33,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:06:33,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:06:33,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:06:33,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (1/1) ... [2024-12-02 11:06:33,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (1/1) ... [2024-12-02 11:06:33,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (1/1) ... [2024-12-02 11:06:33,272 INFO L175 MemorySlicer]: Split 35 memory accesses to 4 slices as follows [2, 5, 2, 26]. 74 percent of accesses are in the largest equivalence class. The 23 initializations are split as follows [2, 5, 0, 16]. The 5 writes are split as follows [0, 0, 1, 4]. [2024-12-02 11:06:33,272 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (1/1) ... [2024-12-02 11:06:33,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (1/1) ... [2024-12-02 11:06:33,280 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (1/1) ... [2024-12-02 11:06:33,281 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (1/1) ... [2024-12-02 11:06:33,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (1/1) ... [2024-12-02 11:06:33,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (1/1) ... [2024-12-02 11:06:33,289 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (1/1) ... [2024-12-02 11:06:33,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:06:33,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:06:33,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:06:33,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:06:33,293 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (1/1) ... [2024-12-02 11:06:33,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:06:33,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:06:33,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:06:33,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b850ea-1c93-428b-9bdd-216a26876d74/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:06:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 11:06:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 11:06:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 11:06:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 11:06:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 11:06:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 11:06:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 11:06:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 11:06:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 11:06:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 11:06:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 11:06:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 11:06:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:06:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 11:06:33,340 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 11:06:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:06:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:06:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 11:06:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 11:06:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:06:33,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:06:33,341 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 11:06:33,451 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:06:33,452 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:06:33,713 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 11:06:33,713 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:06:33,903 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:06:33,903 INFO L312 CfgBuilder]: Removed 12 assume(true) statements. [2024-12-02 11:06:33,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:06:33 BoogieIcfgContainer [2024-12-02 11:06:33,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:06:33,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:06:33,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:06:33,910 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:06:33,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:06:32" (1/3) ... [2024-12-02 11:06:33,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785806a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:06:33, skipping insertion in model container [2024-12-02 11:06:33,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:06:33" (2/3) ... [2024-12-02 11:06:33,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785806a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:06:33, skipping insertion in model container [2024-12-02 11:06:33,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:06:33" (3/3) ... [2024-12-02 11:06:33,912 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing.i [2024-12-02 11:06:33,929 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:06:33,930 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_78-equ_racing.i that has 2 procedures, 68 locations, 1 initial locations, 12 loop locations, and 2 error locations. [2024-12-02 11:06:33,930 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 11:06:33,972 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-12-02 11:06:34,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 94 transitions, 195 flow [2024-12-02 11:06:34,053 INFO L124 PetriNetUnfolderBase]: 38/139 cut-off events. [2024-12-02 11:06:34,055 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 11:06:34,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 139 events. 38/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 550 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 87. Up to 8 conditions per place. [2024-12-02 11:06:34,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 94 transitions, 195 flow [2024-12-02 11:06:34,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 91 transitions, 186 flow [2024-12-02 11:06:34,071 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:06:34,082 INFO L333 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, 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;@61251051, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:06:34,082 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-12-02 11:06:34,091 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 11:06:34,091 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2024-12-02 11:06:34,091 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 11:06:34,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:06:34,091 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-12-02 11:06:34,092 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-12-02 11:06:34,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:06:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1374812890, now seen corresponding path program 1 times [2024-12-02 11:06:34,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:06:34,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214853809] [2024-12-02 11:06:34,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:06:34,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:06:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:06:34,254 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:06:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:06:34,302 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 11:06:34,303 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 11:06:34,304 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-12-02 11:06:34,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-12-02 11:06:34,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-12-02 11:06:34,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-12-02 11:06:34,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:06:34,307 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-02 11:06:34,310 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 11:06:34,310 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 11:06:34,341 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 11:06:34,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 137 transitions, 290 flow [2024-12-02 11:06:34,387 INFO L124 PetriNetUnfolderBase]: 64/235 cut-off events. [2024-12-02 11:06:34,387 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 11:06:34,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 235 events. 64/235 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1099 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 141. Up to 12 conditions per place. [2024-12-02 11:06:34,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 137 transitions, 290 flow [2024-12-02 11:06:34,393 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 136 transitions, 288 flow [2024-12-02 11:06:34,395 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:06:34,396 INFO L333 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, 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;@61251051, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:06:34,396 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-12-02 11:06:34,405 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 11:06:34,406 INFO L124 PetriNetUnfolderBase]: 6/53 cut-off events. [2024-12-02 11:06:34,406 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 11:06:34,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:06:34,406 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-12-02 11:06:34,406 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 11:06:34,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:06:34,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1940448864, now seen corresponding path program 1 times [2024-12-02 11:06:34,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:06:34,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154237924] [2024-12-02 11:06:34,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:06:34,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:06:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:06:34,447 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:06:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:06:34,480 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 11:06:34,480 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 11:06:34,480 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-12-02 11:06:34,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-12-02 11:06:34,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-12-02 11:06:34,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-12-02 11:06:34,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-12-02 11:06:34,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:06:34,481 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-02 11:06:34,482 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 11:06:34,482 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 11:06:34,516 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 11:06:34,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 180 transitions, 387 flow [2024-12-02 11:06:34,571 INFO L124 PetriNetUnfolderBase]: 93/344 cut-off events. [2024-12-02 11:06:34,572 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-12-02 11:06:34,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 344 events. 93/344 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1723 event pairs, 1 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 244. Up to 16 conditions per place. [2024-12-02 11:06:34,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 180 transitions, 387 flow [2024-12-02 11:06:34,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 179 transitions, 385 flow [2024-12-02 11:06:34,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:06:34,581 INFO L333 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, 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;@61251051, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:06:34,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-12-02 11:06:34,592 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 11:06:34,592 INFO L124 PetriNetUnfolderBase]: 12/84 cut-off events. [2024-12-02 11:06:34,592 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 11:06:34,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:06:34,592 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:06:34,592 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-12-02 11:06:34,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:06:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash 79646652, now seen corresponding path program 1 times [2024-12-02 11:06:34,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:06:34,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510403304] [2024-12-02 11:06:34,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:06:34,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:06:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:06:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:06:34,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:06:34,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510403304] [2024-12-02 11:06:34,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510403304] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:06:34,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:06:34,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:06:34,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069750206] [2024-12-02 11:06:34,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:06:34,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:06:34,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:06:34,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:06:34,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:06:34,738 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 180 [2024-12-02 11:06:34,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 179 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2024-12-02 11:06:34,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:06:34,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 180 [2024-12-02 11:06:34,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:07:09,511 INFO L124 PetriNetUnfolderBase]: 352730/576692 cut-off events. [2024-12-02 11:07:09,511 INFO L125 PetriNetUnfolderBase]: For 3263/3263 co-relation queries the response was YES. [2024-12-02 11:07:10,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046399 conditions, 576692 events. 352730/576692 cut-off events. For 3263/3263 co-relation queries the response was YES. Maximal size of possible extension queue 14560. Compared 6273476 event pairs, 218593 based on Foata normal form. 181026/702685 useless extension candidates. Maximal degree in co-relation 64109. Up to 467503 conditions per place. [2024-12-02 11:07:12,008 INFO L140 encePairwiseOnDemand]: 133/180 looper letters, 95 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2024-12-02 11:07:12,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 153 transitions, 527 flow [2024-12-02 11:07:12,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:07:12,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 11:07:12,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2024-12-02 11:07:12,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-12-02 11:07:12,024 INFO L175 Difference]: Start difference. First operand has 135 places, 179 transitions, 385 flow. Second operand 3 states and 321 transitions. [2024-12-02 11:07:12,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 153 transitions, 527 flow [2024-12-02 11:07:12,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 153 transitions, 527 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 11:07:12,038 INFO L231 Difference]: Finished difference. Result has 138 places, 136 transitions, 309 flow [2024-12-02 11:07:12,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=138, PETRI_TRANSITIONS=136} [2024-12-02 11:07:12,042 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2024-12-02 11:07:12,042 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 136 transitions, 309 flow [2024-12-02 11:07:12,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2024-12-02 11:07:12,043 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:07:12,043 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:07:12,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:07:12,043 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-12-02 11:07:12,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:07:12,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1700374586, now seen corresponding path program 1 times [2024-12-02 11:07:12,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:07:12,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973569840] [2024-12-02 11:07:12,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:07:12,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:07:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:07:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:07:12,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:07:12,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973569840] [2024-12-02 11:07:12,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973569840] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:07:12,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:07:12,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:07:12,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463757916] [2024-12-02 11:07:12,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:07:12,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:07:12,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:07:12,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:07:12,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:07:12,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 180 [2024-12-02 11:07:12,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 136 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2024-12-02 11:07:12,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:07:12,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 180 [2024-12-02 11:07:12,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:07:55,103 INFO L124 PetriNetUnfolderBase]: 472790/776196 cut-off events. [2024-12-02 11:07:55,103 INFO L125 PetriNetUnfolderBase]: For 18551/18551 co-relation queries the response was YES. [2024-12-02 11:07:56,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430305 conditions, 776196 events. 472790/776196 cut-off events. For 18551/18551 co-relation queries the response was YES. Maximal size of possible extension queue 19607. Compared 8736520 event pairs, 134313 based on Foata normal form. 0/713190 useless extension candidates. Maximal degree in co-relation 1280761. Up to 453661 conditions per place. [2024-12-02 11:07:58,062 INFO L140 encePairwiseOnDemand]: 171/180 looper letters, 239 selfloop transitions, 12 changer transitions 0/305 dead transitions. [2024-12-02 11:07:58,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 305 transitions, 1219 flow [2024-12-02 11:07:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:07:58,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 11:07:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 520 transitions. [2024-12-02 11:07:58,066 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-12-02 11:07:58,066 INFO L175 Difference]: Start difference. First operand has 138 places, 136 transitions, 309 flow. Second operand 5 states and 520 transitions. [2024-12-02 11:07:58,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 305 transitions, 1219 flow [2024-12-02 11:07:58,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 305 transitions, 1215 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 11:07:58,081 INFO L231 Difference]: Finished difference. Result has 145 places, 146 transitions, 397 flow [2024-12-02 11:07:58,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=397, PETRI_PLACES=145, PETRI_TRANSITIONS=146} [2024-12-02 11:07:58,082 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 10 predicate places. [2024-12-02 11:07:58,083 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 146 transitions, 397 flow [2024-12-02 11:07:58,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2024-12-02 11:07:58,083 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:07:58,083 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2024-12-02 11:07:58,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:07:58,083 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-12-02 11:07:58,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:07:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1476714262, now seen corresponding path program 1 times [2024-12-02 11:07:58,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:07:58,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854802642] [2024-12-02 11:07:58,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:07:58,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:07:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:07:58,108 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:07:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:07:58,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 11:07:58,129 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 11:07:58,129 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-12-02 11:07:58,129 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-12-02 11:07:58,129 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-12-02 11:07:58,129 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-12-02 11:07:58,129 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-12-02 11:07:58,129 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-12-02 11:07:58,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:07:58,130 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-12-02 11:07:58,130 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 11:07:58,130 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-12-02 11:07:58,167 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 11:07:58,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 223 transitions, 486 flow [2024-12-02 11:07:58,217 INFO L124 PetriNetUnfolderBase]: 130/481 cut-off events. [2024-12-02 11:07:58,217 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-12-02 11:07:58,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 481 events. 130/481 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2530 event pairs, 6 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 366. Up to 32 conditions per place. [2024-12-02 11:07:58,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 223 transitions, 486 flow [2024-12-02 11:07:58,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 222 transitions, 484 flow [2024-12-02 11:07:58,227 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:07:58,228 INFO L333 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, 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;@61251051, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:07:58,228 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 11:07:58,233 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 11:07:58,233 INFO L124 PetriNetUnfolderBase]: 12/84 cut-off events. [2024-12-02 11:07:58,234 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 11:07:58,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:07:58,234 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:07:58,234 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 11:07:58,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:07:58,234 INFO L85 PathProgramCache]: Analyzing trace with hash -965156549, now seen corresponding path program 1 times [2024-12-02 11:07:58,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:07:58,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217188552] [2024-12-02 11:07:58,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:07:58,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:07:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:07:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:07:58,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:07:58,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217188552] [2024-12-02 11:07:58,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217188552] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:07:58,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:07:58,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:07:58,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701105363] [2024-12-02 11:07:58,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:07:58,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:07:58,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:07:58,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:07:58,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:07:58,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 223 [2024-12-02 11:07:58,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 222 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2024-12-02 11:07:58,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:07:58,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 223 [2024-12-02 11:07:58,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand