./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:43:16,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:43:16,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:43:16,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:43:16,905 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:43:16,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:43:16,947 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:43:16,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:43:16,948 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:43:16,949 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:43:16,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:43:16,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:43:16,950 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:43:16,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:43:16,953 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:43:16,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:43:16,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:43:16,954 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:43:16,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:43:16,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:43:16,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:43:16,958 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:43:16,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:43:16,959 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:43:16,959 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:43:16,960 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:43:16,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:43:16,960 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:43:16,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:43:16,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:43:16,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:43:16,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:43:16,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:43:16,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:43:16,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:43:16,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:43:16,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:43:16,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:43:16,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:43:16,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:43:16,976 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:43:16,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:43:16,976 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 [2024-11-22 13:43:17,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:43:17,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:43:17,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:43:17,262 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:43:17,262 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:43:17,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2024-11-22 13:43:18,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:43:18,844 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:43:18,845 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2024-11-22 13:43:18,852 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e696c56d7/2f9a0b5969c4480996f059b8fd9407eb/FLAG221de4740 [2024-11-22 13:43:18,865 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e696c56d7/2f9a0b5969c4480996f059b8fd9407eb [2024-11-22 13:43:18,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:43:18,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:43:18,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:43:18,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:43:18,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:43:18,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:43:18" (1/1) ... [2024-11-22 13:43:18,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b04ab21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:18, skipping insertion in model container [2024-11-22 13:43:18,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:43:18" (1/1) ... [2024-11-22 13:43:18,905 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:43:19,094 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2024-11-22 13:43:19,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:43:19,106 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:43:19,130 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2024-11-22 13:43:19,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:43:19,148 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:43:19,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19 WrapperNode [2024-11-22 13:43:19,149 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:43:19,150 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:43:19,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:43:19,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:43:19,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19" (1/1) ... [2024-11-22 13:43:19,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19" (1/1) ... [2024-11-22 13:43:19,187 INFO L138 Inliner]: procedures = 24, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-11-22 13:43:19,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:43:19,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:43:19,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:43:19,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:43:19,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19" (1/1) ... [2024-11-22 13:43:19,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19" (1/1) ... [2024-11-22 13:43:19,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19" (1/1) ... [2024-11-22 13:43:19,223 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 13:43:19,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19" (1/1) ... [2024-11-22 13:43:19,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19" (1/1) ... [2024-11-22 13:43:19,228 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19" (1/1) ... [2024-11-22 13:43:19,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19" (1/1) ... [2024-11-22 13:43:19,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19" (1/1) ... [2024-11-22 13:43:19,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19" (1/1) ... [2024-11-22 13:43:19,237 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:43:19,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:43:19,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:43:19,238 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:43:19,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19" (1/1) ... [2024-11-22 13:43:19,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:43:19,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:19,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 13:43:19,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 13:43:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:43:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:43:19,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:43:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:43:19,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:43:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:43:19,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:43:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-22 13:43:19,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-22 13:43:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:43:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-22 13:43:19,332 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-22 13:43:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-22 13:43:19,332 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-22 13:43:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:43:19,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:43:19,334 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:43:19,440 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:43:19,442 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:43:19,689 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:43:19,690 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:43:19,849 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:43:19,849 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-22 13:43:19,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:19 BoogieIcfgContainer [2024-11-22 13:43:19,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:43:19,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:43:19,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:43:19,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:43:19,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:43:18" (1/3) ... [2024-11-22 13:43:19,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5ec320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:19, skipping insertion in model container [2024-11-22 13:43:19,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:43:19" (2/3) ... [2024-11-22 13:43:19,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5ec320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:19, skipping insertion in model container [2024-11-22 13:43:19,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:19" (3/3) ... [2024-11-22 13:43:19,860 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2024-11-22 13:43:19,874 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:43:19,874 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:43:19,874 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:43:19,942 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-11-22 13:43:19,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 46 transitions, 134 flow [2024-11-22 13:43:20,021 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-22 13:43:20,021 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 13:43:20,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 40 events. 6/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-22 13:43:20,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 46 transitions, 134 flow [2024-11-22 13:43:20,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 114 flow [2024-11-22 13:43:20,035 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:43:20,041 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;@4044df17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:43:20,042 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-22 13:43:20,085 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:43:20,085 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-22 13:43:20,086 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 13:43:20,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:20,087 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:20,087 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:43:20,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:20,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1273891109, now seen corresponding path program 1 times [2024-11-22 13:43:20,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:20,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185508587] [2024-11-22 13:43:20,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:20,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:43:20,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:20,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185508587] [2024-11-22 13:43:20,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185508587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:20,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:20,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:43:20,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218956885] [2024-11-22 13:43:20,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:20,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:43:20,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:20,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:43:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:43:20,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-22 13:43:20,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-22 13:43:20,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:20,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-22 13:43:20,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:22,845 INFO L124 PetriNetUnfolderBase]: 22467/26032 cut-off events. [2024-11-22 13:43:22,846 INFO L125 PetriNetUnfolderBase]: For 1291/1291 co-relation queries the response was YES. [2024-11-22 13:43:22,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53577 conditions, 26032 events. 22467/26032 cut-off events. For 1291/1291 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 90072 event pairs, 3392 based on Foata normal form. 1/14205 useless extension candidates. Maximal degree in co-relation 44055. Up to 18721 conditions per place. [2024-11-22 13:43:23,044 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 53 selfloop transitions, 3 changer transitions 5/68 dead transitions. [2024-11-22 13:43:23,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 327 flow [2024-11-22 13:43:23,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:43:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:43:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-22 13:43:23,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7318840579710145 [2024-11-22 13:43:23,059 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 114 flow. Second operand 3 states and 101 transitions. [2024-11-22 13:43:23,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 327 flow [2024-11-22 13:43:23,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 281 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-22 13:43:23,123 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 109 flow [2024-11-22 13:43:23,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2024-11-22 13:43:23,130 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2024-11-22 13:43:23,131 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 109 flow [2024-11-22 13:43:23,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-22 13:43:23,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:23,132 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:23,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:43:23,133 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:43:23,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:23,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1632091046, now seen corresponding path program 1 times [2024-11-22 13:43:23,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:23,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831796262] [2024-11-22 13:43:23,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:23,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:43:23,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:23,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831796262] [2024-11-22 13:43:23,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831796262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:23,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:23,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:43:23,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833595967] [2024-11-22 13:43:23,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:23,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:43:23,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:43:23,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:43:23,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-22 13:43:23,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-22 13:43:23,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:23,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-22 13:43:23,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:25,348 INFO L124 PetriNetUnfolderBase]: 28887/33823 cut-off events. [2024-11-22 13:43:25,348 INFO L125 PetriNetUnfolderBase]: For 5242/5242 co-relation queries the response was YES. [2024-11-22 13:43:25,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73953 conditions, 33823 events. 28887/33823 cut-off events. For 5242/5242 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 126061 event pairs, 5370 based on Foata normal form. 1/23088 useless extension candidates. Maximal degree in co-relation 30558. Up to 22060 conditions per place. [2024-11-22 13:43:25,685 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 53 selfloop transitions, 3 changer transitions 1/64 dead transitions. [2024-11-22 13:43:25,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 64 transitions, 286 flow [2024-11-22 13:43:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:43:25,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:43:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-22 13:43:25,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-11-22 13:43:25,687 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 109 flow. Second operand 3 states and 93 transitions. [2024-11-22 13:43:25,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 64 transitions, 286 flow [2024-11-22 13:43:25,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:43:25,693 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 125 flow [2024-11-22 13:43:25,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-22 13:43:25,695 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2024-11-22 13:43:25,695 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 125 flow [2024-11-22 13:43:25,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-22 13:43:25,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:25,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:25,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:43:25,696 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:43:25,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1847200297, now seen corresponding path program 1 times [2024-11-22 13:43:25,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:25,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344470696] [2024-11-22 13:43:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:25,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:43:25,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:25,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344470696] [2024-11-22 13:43:25,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344470696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:25,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:25,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:43:25,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478417465] [2024-11-22 13:43:25,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:25,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:43:25,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:25,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:43:25,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:43:25,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-22 13:43:25,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-22 13:43:25,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:25,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-22 13:43:25,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:28,121 INFO L124 PetriNetUnfolderBase]: 36445/42858 cut-off events. [2024-11-22 13:43:28,121 INFO L125 PetriNetUnfolderBase]: For 12374/12374 co-relation queries the response was YES. [2024-11-22 13:43:28,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100240 conditions, 42858 events. 36445/42858 cut-off events. For 12374/12374 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 168991 event pairs, 5856 based on Foata normal form. 1/35380 useless extension candidates. Maximal degree in co-relation 32750. Up to 31148 conditions per place. [2024-11-22 13:43:28,303 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 59 selfloop transitions, 3 changer transitions 3/72 dead transitions. [2024-11-22 13:43:28,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 340 flow [2024-11-22 13:43:28,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:43:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:43:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-11-22 13:43:28,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028985507246377 [2024-11-22 13:43:28,305 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 125 flow. Second operand 3 states and 97 transitions. [2024-11-22 13:43:28,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 340 flow [2024-11-22 13:43:28,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:43:28,309 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 141 flow [2024-11-22 13:43:28,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-11-22 13:43:28,310 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-11-22 13:43:28,311 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 141 flow [2024-11-22 13:43:28,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-22 13:43:28,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:28,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:28,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:43:28,312 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:43:28,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:28,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1539604524, now seen corresponding path program 1 times [2024-11-22 13:43:28,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:28,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656581453] [2024-11-22 13:43:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:28,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:43:28,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:28,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656581453] [2024-11-22 13:43:28,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656581453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:28,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:28,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:43:28,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543078879] [2024-11-22 13:43:28,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:28,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:43:28,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:28,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:43:28,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:43:28,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-22 13:43:28,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-22 13:43:28,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:28,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-22 13:43:28,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:30,880 INFO L124 PetriNetUnfolderBase]: 41073/48677 cut-off events. [2024-11-22 13:43:30,881 INFO L125 PetriNetUnfolderBase]: For 18456/18456 co-relation queries the response was YES. [2024-11-22 13:43:30,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122495 conditions, 48677 events. 41073/48677 cut-off events. For 18456/18456 co-relation queries the response was YES. Maximal size of possible extension queue 1782. Compared 205151 event pairs, 6124 based on Foata normal form. 981/49144 useless extension candidates. Maximal degree in co-relation 40746. Up to 22914 conditions per place. [2024-11-22 13:43:31,059 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 106 selfloop transitions, 6 changer transitions 11/130 dead transitions. [2024-11-22 13:43:31,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 130 transitions, 643 flow [2024-11-22 13:43:31,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:43:31,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:43:31,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-11-22 13:43:31,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7608695652173914 [2024-11-22 13:43:31,061 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 141 flow. Second operand 5 states and 175 transitions. [2024-11-22 13:43:31,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 130 transitions, 643 flow [2024-11-22 13:43:31,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 130 transitions, 634 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:43:31,072 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 175 flow [2024-11-22 13:43:31,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-11-22 13:43:31,073 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-11-22 13:43:31,074 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 175 flow [2024-11-22 13:43:31,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-22 13:43:31,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:31,075 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:31,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:43:31,075 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:43:31,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:31,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1576941873, now seen corresponding path program 1 times [2024-11-22 13:43:31,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:31,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170923873] [2024-11-22 13:43:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:31,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:43:31,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:31,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170923873] [2024-11-22 13:43:31,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170923873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:31,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:31,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:43:31,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611165108] [2024-11-22 13:43:31,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:31,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:43:31,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:31,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:43:31,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:43:31,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-22 13:43:31,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-22 13:43:31,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:31,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-22 13:43:31,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:33,768 INFO L124 PetriNetUnfolderBase]: 40803/48295 cut-off events. [2024-11-22 13:43:33,769 INFO L125 PetriNetUnfolderBase]: For 30028/30028 co-relation queries the response was YES. [2024-11-22 13:43:33,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132577 conditions, 48295 events. 40803/48295 cut-off events. For 30028/30028 co-relation queries the response was YES. Maximal size of possible extension queue 1743. Compared 202039 event pairs, 973 based on Foata normal form. 562/48727 useless extension candidates. Maximal degree in co-relation 51811. Up to 18355 conditions per place. [2024-11-22 13:43:33,953 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 84 selfloop transitions, 4 changer transitions 35/130 dead transitions. [2024-11-22 13:43:33,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 130 transitions, 679 flow [2024-11-22 13:43:33,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:43:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:43:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-11-22 13:43:33,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7347826086956522 [2024-11-22 13:43:33,955 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 175 flow. Second operand 5 states and 169 transitions. [2024-11-22 13:43:33,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 130 transitions, 679 flow [2024-11-22 13:43:34,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 130 transitions, 673 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 13:43:34,186 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 183 flow [2024-11-22 13:43:34,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-11-22 13:43:34,187 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-11-22 13:43:34,187 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 183 flow [2024-11-22 13:43:34,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-22 13:43:34,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:34,188 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:34,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:43:34,189 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:43:34,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:34,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1386392631, now seen corresponding path program 2 times [2024-11-22 13:43:34,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:34,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602200302] [2024-11-22 13:43:34,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:43:34,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:34,209 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:43:34,209 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:43:34,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:34,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602200302] [2024-11-22 13:43:34,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602200302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:34,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840827529] [2024-11-22 13:43:34,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:43:34,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:34,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:34,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:43:34,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:43:34,426 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:43:34,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:34,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 13:43:34,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:43:34,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:43:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:43:35,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840827529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:43:35,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:43:35,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-22 13:43:35,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871808511] [2024-11-22 13:43:35,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:43:35,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:43:35,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:35,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:43:35,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:43:35,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-22 13:43:35,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 183 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 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) [2024-11-22 13:43:35,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:35,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-22 13:43:35,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:38,833 INFO L124 PetriNetUnfolderBase]: 34490/41414 cut-off events. [2024-11-22 13:43:38,833 INFO L125 PetriNetUnfolderBase]: For 48525/48525 co-relation queries the response was YES. [2024-11-22 13:43:38,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124459 conditions, 41414 events. 34490/41414 cut-off events. For 48525/48525 co-relation queries the response was YES. Maximal size of possible extension queue 1549. Compared 173796 event pairs, 1462 based on Foata normal form. 1953/43100 useless extension candidates. Maximal degree in co-relation 63824. Up to 7106 conditions per place. [2024-11-22 13:43:39,026 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 329 selfloop transitions, 61 changer transitions 41/438 dead transitions. [2024-11-22 13:43:39,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 438 transitions, 2738 flow [2024-11-22 13:43:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 13:43:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-22 13:43:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 612 transitions. [2024-11-22 13:43:39,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.700228832951945 [2024-11-22 13:43:39,029 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 183 flow. Second operand 19 states and 612 transitions. [2024-11-22 13:43:39,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 438 transitions, 2738 flow [2024-11-22 13:43:39,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 438 transitions, 2697 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 13:43:39,066 INFO L231 Difference]: Finished difference. Result has 86 places, 109 transitions, 750 flow [2024-11-22 13:43:39,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=750, PETRI_PLACES=86, PETRI_TRANSITIONS=109} [2024-11-22 13:43:39,067 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-11-22 13:43:39,067 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 109 transitions, 750 flow [2024-11-22 13:43:39,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 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) [2024-11-22 13:43:39,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:39,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:39,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:43:39,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 13:43:39,269 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:43:39,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:39,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1184879999, now seen corresponding path program 1 times [2024-11-22 13:43:39,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:39,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655742278] [2024-11-22 13:43:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:39,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:43:39,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:39,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655742278] [2024-11-22 13:43:39,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655742278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:39,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16733648] [2024-11-22 13:43:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:39,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:39,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:39,375 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:43:39,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:43:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:39,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 13:43:39,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:43:39,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:43:39,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16733648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:39,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:43:39,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-22 13:43:39,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851735596] [2024-11-22 13:43:39,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:39,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:43:39,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:39,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:43:39,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:43:39,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-22 13:43:39,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 109 transitions, 750 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-22 13:43:39,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:39,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-22 13:43:39,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:42,765 INFO L124 PetriNetUnfolderBase]: 33310/40159 cut-off events. [2024-11-22 13:43:42,766 INFO L125 PetriNetUnfolderBase]: For 356612/356630 co-relation queries the response was YES. [2024-11-22 13:43:42,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214169 conditions, 40159 events. 33310/40159 cut-off events. For 356612/356630 co-relation queries the response was YES. Maximal size of possible extension queue 1486. Compared 177296 event pairs, 2093 based on Foata normal form. 1180/41233 useless extension candidates. Maximal degree in co-relation 118023. Up to 30928 conditions per place. [2024-11-22 13:43:43,047 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 237 selfloop transitions, 16 changer transitions 0/260 dead transitions. [2024-11-22 13:43:43,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 260 transitions, 2295 flow [2024-11-22 13:43:43,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:43:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:43:43,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-11-22 13:43:43,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2024-11-22 13:43:43,048 INFO L175 Difference]: Start difference. First operand has 86 places, 109 transitions, 750 flow. Second operand 4 states and 126 transitions. [2024-11-22 13:43:43,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 260 transitions, 2295 flow [2024-11-22 13:43:44,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 260 transitions, 2179 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-11-22 13:43:44,142 INFO L231 Difference]: Finished difference. Result has 88 places, 116 transitions, 830 flow [2024-11-22 13:43:44,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=830, PETRI_PLACES=88, PETRI_TRANSITIONS=116} [2024-11-22 13:43:44,143 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-22 13:43:44,144 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 116 transitions, 830 flow [2024-11-22 13:43:44,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-22 13:43:44,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:44,144 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:44,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 13:43:44,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-22 13:43:44,345 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:43:44,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:44,346 INFO L85 PathProgramCache]: Analyzing trace with hash -578760252, now seen corresponding path program 1 times [2024-11-22 13:43:44,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:44,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694851825] [2024-11-22 13:43:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:44,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:43:44,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:44,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694851825] [2024-11-22 13:43:44,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694851825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:44,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:44,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:43:44,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305432929] [2024-11-22 13:43:44,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:44,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:43:44,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:44,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:43:44,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:43:44,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-22 13:43:44,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 116 transitions, 830 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-22 13:43:44,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:44,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-22 13:43:44,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:47,584 INFO L124 PetriNetUnfolderBase]: 32898/39741 cut-off events. [2024-11-22 13:43:47,584 INFO L125 PetriNetUnfolderBase]: For 292449/292449 co-relation queries the response was YES. [2024-11-22 13:43:47,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218208 conditions, 39741 events. 32898/39741 cut-off events. For 292449/292449 co-relation queries the response was YES. Maximal size of possible extension queue 1475. Compared 171816 event pairs, 1097 based on Foata normal form. 412/40057 useless extension candidates. Maximal degree in co-relation 142560. Up to 16281 conditions per place. [2024-11-22 13:43:47,825 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 161 selfloop transitions, 10 changer transitions 68/246 dead transitions. [2024-11-22 13:43:47,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 246 transitions, 2352 flow [2024-11-22 13:43:47,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:43:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:43:47,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-22 13:43:47,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-22 13:43:47,826 INFO L175 Difference]: Start difference. First operand has 88 places, 116 transitions, 830 flow. Second operand 5 states and 161 transitions. [2024-11-22 13:43:47,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 246 transitions, 2352 flow [2024-11-22 13:43:48,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 246 transitions, 2298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:43:48,668 INFO L231 Difference]: Finished difference. Result has 91 places, 116 transitions, 837 flow [2024-11-22 13:43:48,668 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=837, PETRI_PLACES=91, PETRI_TRANSITIONS=116} [2024-11-22 13:43:48,669 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 39 predicate places. [2024-11-22 13:43:48,669 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 116 transitions, 837 flow [2024-11-22 13:43:48,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-22 13:43:48,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:48,669 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:48,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:43:48,670 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:43:48,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:48,670 INFO L85 PathProgramCache]: Analyzing trace with hash -761884162, now seen corresponding path program 2 times [2024-11-22 13:43:48,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:48,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938831529] [2024-11-22 13:43:48,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:43:48,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:48,692 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:43:48,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:43:48,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:48,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938831529] [2024-11-22 13:43:48,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938831529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:48,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655290167] [2024-11-22 13:43:48,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:43:48,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:48,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:48,833 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:43:48,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:43:48,923 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:43:48,923 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:48,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 13:43:48,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:43:49,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:43:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:43:49,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655290167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:43:49,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:43:49,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-22 13:43:49,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182373275] [2024-11-22 13:43:49,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:43:49,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:43:49,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:43:49,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:43:49,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-22 13:43:49,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 116 transitions, 837 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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) [2024-11-22 13:43:49,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:49,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-22 13:43:49,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:51,415 INFO L124 PetriNetUnfolderBase]: 21549/25939 cut-off events. [2024-11-22 13:43:51,415 INFO L125 PetriNetUnfolderBase]: For 212349/212349 co-relation queries the response was YES. [2024-11-22 13:43:51,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140655 conditions, 25939 events. 21549/25939 cut-off events. For 212349/212349 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 103184 event pairs, 1480 based on Foata normal form. 796/26655 useless extension candidates. Maximal degree in co-relation 92302. Up to 19512 conditions per place. [2024-11-22 13:43:51,577 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 178 selfloop transitions, 12 changer transitions 0/197 dead transitions. [2024-11-22 13:43:51,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 197 transitions, 1827 flow [2024-11-22 13:43:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:43:51,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:43:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-11-22 13:43:51,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6608695652173913 [2024-11-22 13:43:51,579 INFO L175 Difference]: Start difference. First operand has 91 places, 116 transitions, 837 flow. Second operand 5 states and 152 transitions. [2024-11-22 13:43:51,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 197 transitions, 1827 flow [2024-11-22 13:43:52,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 197 transitions, 1808 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-22 13:43:52,531 INFO L231 Difference]: Finished difference. Result has 95 places, 119 transitions, 894 flow [2024-11-22 13:43:52,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=894, PETRI_PLACES=95, PETRI_TRANSITIONS=119} [2024-11-22 13:43:52,532 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 43 predicate places. [2024-11-22 13:43:52,533 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 119 transitions, 894 flow [2024-11-22 13:43:52,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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) [2024-11-22 13:43:52,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:52,533 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:52,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 13:43:52,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:52,734 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:43:52,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:52,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1173889563, now seen corresponding path program 1 times [2024-11-22 13:43:52,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:52,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623353031] [2024-11-22 13:43:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:52,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:43:52,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:52,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623353031] [2024-11-22 13:43:52,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623353031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:43:52,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:43:52,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:43:52,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576774597] [2024-11-22 13:43:52,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:43:52,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:43:52,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:52,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:43:52,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:43:52,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-22 13:43:52,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 119 transitions, 894 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-22 13:43:52,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:52,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-22 13:43:52,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:55,147 INFO L124 PetriNetUnfolderBase]: 21329/25806 cut-off events. [2024-11-22 13:43:55,147 INFO L125 PetriNetUnfolderBase]: For 224040/224256 co-relation queries the response was YES. [2024-11-22 13:43:55,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146742 conditions, 25806 events. 21329/25806 cut-off events. For 224040/224256 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 102558 event pairs, 1031 based on Foata normal form. 220/25736 useless extension candidates. Maximal degree in co-relation 116676. Up to 10681 conditions per place. [2024-11-22 13:43:55,279 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 158 selfloop transitions, 10 changer transitions 75/250 dead transitions. [2024-11-22 13:43:55,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 250 transitions, 2564 flow [2024-11-22 13:43:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:43:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:43:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-11-22 13:43:55,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2024-11-22 13:43:55,281 INFO L175 Difference]: Start difference. First operand has 95 places, 119 transitions, 894 flow. Second operand 5 states and 153 transitions. [2024-11-22 13:43:55,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 250 transitions, 2564 flow [2024-11-22 13:43:55,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 250 transitions, 2523 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-22 13:43:55,871 INFO L231 Difference]: Finished difference. Result has 99 places, 119 transitions, 910 flow [2024-11-22 13:43:55,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=910, PETRI_PLACES=99, PETRI_TRANSITIONS=119} [2024-11-22 13:43:55,871 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 47 predicate places. [2024-11-22 13:43:55,872 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 119 transitions, 910 flow [2024-11-22 13:43:55,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-22 13:43:55,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:55,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:55,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:43:55,873 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:43:55,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:55,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1203795393, now seen corresponding path program 2 times [2024-11-22 13:43:55,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:55,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626508928] [2024-11-22 13:43:55,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:43:55,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:55,890 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:43:55,890 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:43:55,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:55,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626508928] [2024-11-22 13:43:55,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626508928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:55,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819749783] [2024-11-22 13:43:55,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:43:55,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:55,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:55,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:43:55,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:43:56,081 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:43:56,081 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:43:56,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 13:43:56,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:43:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:43:56,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:43:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:43:56,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819749783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:43:56,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:43:56,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-22 13:43:56,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772826676] [2024-11-22 13:43:56,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:43:56,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:43:56,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:43:56,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:43:56,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:43:56,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-22 13:43:56,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 119 transitions, 910 flow. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 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) [2024-11-22 13:43:56,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:43:56,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-22 13:43:56,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:43:57,678 INFO L124 PetriNetUnfolderBase]: 14646/17753 cut-off events. [2024-11-22 13:43:57,679 INFO L125 PetriNetUnfolderBase]: For 157256/157256 co-relation queries the response was YES. [2024-11-22 13:43:57,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99690 conditions, 17753 events. 14646/17753 cut-off events. For 157256/157256 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 66924 event pairs, 1032 based on Foata normal form. 450/18045 useless extension candidates. Maximal degree in co-relation 80055. Up to 12088 conditions per place. [2024-11-22 13:43:57,813 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 190 selfloop transitions, 12 changer transitions 0/209 dead transitions. [2024-11-22 13:43:57,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 209 transitions, 2122 flow [2024-11-22 13:43:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:43:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:43:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-11-22 13:43:57,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6347826086956522 [2024-11-22 13:43:57,814 INFO L175 Difference]: Start difference. First operand has 99 places, 119 transitions, 910 flow. Second operand 5 states and 146 transitions. [2024-11-22 13:43:57,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 209 transitions, 2122 flow [2024-11-22 13:43:58,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 209 transitions, 2107 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-22 13:43:58,487 INFO L231 Difference]: Finished difference. Result has 103 places, 122 transitions, 967 flow [2024-11-22 13:43:58,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=967, PETRI_PLACES=103, PETRI_TRANSITIONS=122} [2024-11-22 13:43:58,488 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 51 predicate places. [2024-11-22 13:43:58,488 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 122 transitions, 967 flow [2024-11-22 13:43:58,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 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) [2024-11-22 13:43:58,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:43:58,488 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:43:58,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 13:43:58,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:58,689 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:43:58,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:43:58,689 INFO L85 PathProgramCache]: Analyzing trace with hash -562003002, now seen corresponding path program 1 times [2024-11-22 13:43:58,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:43:58,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803781525] [2024-11-22 13:43:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:58,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:43:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:43:59,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:43:59,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803781525] [2024-11-22 13:43:59,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803781525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:43:59,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308324825] [2024-11-22 13:43:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:43:59,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:43:59,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:43:59,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:43:59,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 13:43:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:43:59,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 13:43:59,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:44:26,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:44:26,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:44:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:44:27,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308324825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:44:27,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:44:27,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 12 [2024-11-22 13:44:27,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956853501] [2024-11-22 13:44:27,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:44:27,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:44:27,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:44:27,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:44:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=106, Unknown=2, NotChecked=0, Total=156 [2024-11-22 13:44:27,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-22 13:44:27,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 122 transitions, 967 flow. Second operand has 13 states, 13 states have (on average 20.23076923076923) internal successors, (263), 13 states have internal predecessors, (263), 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) [2024-11-22 13:44:27,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:44:27,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-22 13:44:27,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:44:30,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []