./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/chl-node-symm.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 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:45:38,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:45:38,547 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:45:38,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:45:38,552 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:45:38,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:45:38,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:45:38,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:45:38,589 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:45:38,589 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:45:38,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:45:38,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:45:38,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:45:38,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:45:38,593 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:45:38,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:45:38,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:45:38,594 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:45:38,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:45:38,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:45:38,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:45:38,599 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:45:38,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:45:38,600 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:45:38,600 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:45:38,600 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:45:38,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:45:38,601 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:45:38,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:45:38,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:45:38,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:45:38,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:45:38,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:45:38,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:45:38,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:45:38,608 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:45:38,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:45:38,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:45:38,608 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:45:38,609 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:45:38,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:45:38,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:45:38,612 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2024-11-19 01:45:38,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:45:38,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:45:38,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:45:38,912 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:45:38,913 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:45:38,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-11-19 01:45:40,396 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:45:40,624 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:45:40,625 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-11-19 01:45:40,633 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00b86c0f0/641e987618c24e68987d7171168ffd7a/FLAG7c4e9e1a1 [2024-11-19 01:45:40,652 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00b86c0f0/641e987618c24e68987d7171168ffd7a [2024-11-19 01:45:40,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:45:40,657 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:45:40,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:45:40,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:45:40,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:45:40,666 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:40,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4fa0a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40, skipping insertion in model container [2024-11-19 01:45:40,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:40,699 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:45:40,906 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/chl-node-symm.wvr.c[3331,3344] [2024-11-19 01:45:40,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:45:40,931 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:45:40,961 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/chl-node-symm.wvr.c[3331,3344] [2024-11-19 01:45:40,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:45:40,991 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:45:40,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40 WrapperNode [2024-11-19 01:45:40,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:45:40,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:45:40,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:45:40,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:45:41,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:41,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:41,057 INFO L138 Inliner]: procedures = 25, calls = 40, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 289 [2024-11-19 01:45:41,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:45:41,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:45:41,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:45:41,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:45:41,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:41,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:41,082 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:41,105 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 10, 6]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-11-19 01:45:41,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:41,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:41,120 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:41,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:41,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:41,137 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:41,143 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:45:41,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:45:41,144 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:45:41,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:45:41,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40" (1/1) ... [2024-11-19 01:45:41,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:45:41,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:41,178 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) [2024-11-19 01:45:41,181 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 [2024-11-19 01:45:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:45:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:45:41,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:45:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:45:41,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:45:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:45:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:45:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 01:45:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:45:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:45:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 01:45:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:45:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:45:41,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:45:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:45:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:45:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 01:45:41,280 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:45:41,384 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:45:41,386 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:45:41,881 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:45:41,882 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:45:42,302 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:45:42,303 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 01:45:42,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:45:42 BoogieIcfgContainer [2024-11-19 01:45:42,303 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:45:42,305 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:45:42,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:45:42,310 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:45:42,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:45:40" (1/3) ... [2024-11-19 01:45:42,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145f578f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:45:42, skipping insertion in model container [2024-11-19 01:45:42,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:40" (2/3) ... [2024-11-19 01:45:42,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145f578f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:45:42, skipping insertion in model container [2024-11-19 01:45:42,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:45:42" (3/3) ... [2024-11-19 01:45:42,315 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2024-11-19 01:45:42,334 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:45:42,335 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:45:42,335 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:45:42,427 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:45:42,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 22 transitions, 58 flow [2024-11-19 01:45:42,501 INFO L124 PetriNetUnfolderBase]: 4/20 cut-off events. [2024-11-19 01:45:42,501 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:45:42,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 4/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-11-19 01:45:42,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 22 transitions, 58 flow [2024-11-19 01:45:42,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 19 transitions, 50 flow [2024-11-19 01:45:42,519 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:45:42,529 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;@4e65cee5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:45:42,529 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 01:45:42,542 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:45:42,542 INFO L124 PetriNetUnfolderBase]: 4/18 cut-off events. [2024-11-19 01:45:42,542 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:45:42,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:42,543 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:42,544 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:42,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:42,550 INFO L85 PathProgramCache]: Analyzing trace with hash -318978629, now seen corresponding path program 1 times [2024-11-19 01:45:42,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:42,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084592269] [2024-11-19 01:45:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:42,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:45:43,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:43,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084592269] [2024-11-19 01:45:43,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084592269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:43,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:43,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:45:43,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136440299] [2024-11-19 01:45:43,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:43,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:45:43,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:43,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:45:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:45:43,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:45:43,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2024-11-19 01:45:43,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:43,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:45:43,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:43,274 INFO L124 PetriNetUnfolderBase]: 12/35 cut-off events. [2024-11-19 01:45:43,274 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 01:45:43,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 35 events. 12/35 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 8 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 40. Up to 34 conditions per place. [2024-11-19 01:45:43,276 INFO L140 encePairwiseOnDemand]: 19/22 looper letters, 17 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2024-11-19 01:45:43,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 20 transitions, 90 flow [2024-11-19 01:45:43,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:45:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:45:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 29 transitions. [2024-11-19 01:45:43,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-11-19 01:45:43,290 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 50 flow. Second operand 3 states and 29 transitions. [2024-11-19 01:45:43,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 20 transitions, 90 flow [2024-11-19 01:45:43,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 82 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:45:43,295 INFO L231 Difference]: Finished difference. Result has 21 places, 20 transitions, 54 flow [2024-11-19 01:45:43,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=21, PETRI_TRANSITIONS=20} [2024-11-19 01:45:43,303 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2024-11-19 01:45:43,303 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 20 transitions, 54 flow [2024-11-19 01:45:43,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2024-11-19 01:45:43,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:43,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:43,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:45:43,304 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:43,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:43,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1630832821, now seen corresponding path program 1 times [2024-11-19 01:45:43,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:43,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626416357] [2024-11-19 01:45:43,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:43,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:45:43,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:43,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626416357] [2024-11-19 01:45:43,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626416357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:43,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:43,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:45:43,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087714453] [2024-11-19 01:45:43,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:43,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:45:43,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:43,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:45:43,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:45:43,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:45:43,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 20 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-19 01:45:43,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:43,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:45:43,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:43,677 INFO L124 PetriNetUnfolderBase]: 12/36 cut-off events. [2024-11-19 01:45:43,677 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:45:43,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 36 events. 12/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 8 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 72. Up to 33 conditions per place. [2024-11-19 01:45:43,678 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 16 selfloop transitions, 4 changer transitions 0/21 dead transitions. [2024-11-19 01:45:43,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 96 flow [2024-11-19 01:45:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:45:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:45:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2024-11-19 01:45:43,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-19 01:45:43,681 INFO L175 Difference]: Start difference. First operand has 21 places, 20 transitions, 54 flow. Second operand 4 states and 33 transitions. [2024-11-19 01:45:43,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 96 flow [2024-11-19 01:45:43,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 92 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 01:45:43,683 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 68 flow [2024-11-19 01:45:43,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2024-11-19 01:45:43,685 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2024-11-19 01:45:43,685 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 68 flow [2024-11-19 01:45:43,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-19 01:45:43,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:43,686 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:43,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:45:43,686 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:43,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:43,687 INFO L85 PathProgramCache]: Analyzing trace with hash -563317027, now seen corresponding path program 1 times [2024-11-19 01:45:43,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:43,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811400930] [2024-11-19 01:45:43,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:43,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:43,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:43,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811400930] [2024-11-19 01:45:43,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811400930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:43,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:43,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:45:43,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220643453] [2024-11-19 01:45:43,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:43,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:45:43,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:43,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:45:43,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:45:43,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:45:43,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-19 01:45:43,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:43,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:45:43,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:43,992 INFO L124 PetriNetUnfolderBase]: 12/37 cut-off events. [2024-11-19 01:45:43,993 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:45:43,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 37 events. 12/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 8 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 72. Up to 35 conditions per place. [2024-11-19 01:45:43,994 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 18 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2024-11-19 01:45:43,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 112 flow [2024-11-19 01:45:43,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:45:43,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:45:43,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2024-11-19 01:45:43,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-19 01:45:43,997 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 68 flow. Second operand 4 states and 32 transitions. [2024-11-19 01:45:43,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 112 flow [2024-11-19 01:45:43,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 111 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:45:43,998 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 81 flow [2024-11-19 01:45:43,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2024-11-19 01:45:43,999 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 5 predicate places. [2024-11-19 01:45:43,999 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 81 flow [2024-11-19 01:45:43,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-19 01:45:44,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:44,000 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:44,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:45:44,000 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:44,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:44,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1455415385, now seen corresponding path program 1 times [2024-11-19 01:45:44,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:44,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345405307] [2024-11-19 01:45:44,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:44,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:45:44,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:44,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345405307] [2024-11-19 01:45:44,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345405307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:44,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:44,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:45:44,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971759725] [2024-11-19 01:45:44,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:44,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:45:44,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:44,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:45:44,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:45:44,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:45:44,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-11-19 01:45:44,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:44,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:45:44,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:44,209 INFO L124 PetriNetUnfolderBase]: 12/38 cut-off events. [2024-11-19 01:45:44,210 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 01:45:44,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 38 events. 12/38 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 8 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 79. Up to 36 conditions per place. [2024-11-19 01:45:44,211 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 19 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2024-11-19 01:45:44,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 127 flow [2024-11-19 01:45:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:45:44,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:45:44,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2024-11-19 01:45:44,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-19 01:45:44,213 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 81 flow. Second operand 4 states and 32 transitions. [2024-11-19 01:45:44,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 127 flow [2024-11-19 01:45:44,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 121 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 01:45:44,217 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 89 flow [2024-11-19 01:45:44,218 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-11-19 01:45:44,219 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2024-11-19 01:45:44,219 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 89 flow [2024-11-19 01:45:44,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-11-19 01:45:44,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:44,220 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:44,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:45:44,220 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:44,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:44,221 INFO L85 PathProgramCache]: Analyzing trace with hash -242675451, now seen corresponding path program 1 times [2024-11-19 01:45:44,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:44,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320056070] [2024-11-19 01:45:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:44,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:46,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:45:46,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:46,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320056070] [2024-11-19 01:45:46,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320056070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:46,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:46,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:45:46,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497960417] [2024-11-19 01:45:46,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:46,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:45:46,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:46,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:45:46,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:45:46,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:45:46,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-19 01:45:46,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:46,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:45:46,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:46,335 INFO L124 PetriNetUnfolderBase]: 11/41 cut-off events. [2024-11-19 01:45:46,335 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 01:45:46,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 41 events. 11/41 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 1 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 88. Up to 21 conditions per place. [2024-11-19 01:45:46,337 INFO L140 encePairwiseOnDemand]: 19/22 looper letters, 22 selfloop transitions, 1 changer transitions 6/30 dead transitions. [2024-11-19 01:45:46,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 164 flow [2024-11-19 01:45:46,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:45:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:45:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2024-11-19 01:45:46,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-11-19 01:45:46,339 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 89 flow. Second operand 4 states and 38 transitions. [2024-11-19 01:45:46,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 164 flow [2024-11-19 01:45:46,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 158 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 01:45:46,341 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 90 flow [2024-11-19 01:45:46,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2024-11-19 01:45:46,344 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 10 predicate places. [2024-11-19 01:45:46,344 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 90 flow [2024-11-19 01:45:46,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-19 01:45:46,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:46,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:46,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:45:46,348 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:45:46,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:46,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1168259515, now seen corresponding path program 2 times [2024-11-19 01:45:46,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:46,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802417262] [2024-11-19 01:45:46,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:45:46,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:46,413 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:45:46,417 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:47,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:45:47,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:47,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802417262] [2024-11-19 01:45:47,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802417262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:47,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:47,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:45:47,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796847097] [2024-11-19 01:45:47,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:47,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:45:47,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:47,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:45:47,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:45:47,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:45:47,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-19 01:45:47,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:47,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:45:47,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:47,372 INFO L124 PetriNetUnfolderBase]: 9/33 cut-off events. [2024-11-19 01:45:47,372 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-19 01:45:47,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 33 events. 9/33 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 3 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 94. Up to 26 conditions per place. [2024-11-19 01:45:47,373 INFO L140 encePairwiseOnDemand]: 19/22 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2024-11-19 01:45:47,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 146 flow [2024-11-19 01:45:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:45:47,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:45:47,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2024-11-19 01:45:47,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-11-19 01:45:47,376 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 90 flow. Second operand 4 states and 34 transitions. [2024-11-19 01:45:47,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 146 flow [2024-11-19 01:45:47,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:45:47,378 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2024-11-19 01:45:47,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2024-11-19 01:45:47,379 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 9 predicate places. [2024-11-19 01:45:47,380 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2024-11-19 01:45:47,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-19 01:45:47,383 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-19 01:45:47,384 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-19 01:45:47,384 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-19 01:45:47,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:45:47,385 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-11-19 01:45:47,387 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 01:45:47,388 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 01:45:47,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:45:47 BasicIcfg [2024-11-19 01:45:47,393 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 01:45:47,393 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 01:45:47,393 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 01:45:47,393 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 01:45:47,394 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:45:42" (3/4) ... [2024-11-19 01:45:47,397 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 01:45:47,401 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-19 01:45:47,401 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-19 01:45:47,415 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 226 nodes and edges [2024-11-19 01:45:47,416 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2024-11-19 01:45:47,416 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-19 01:45:47,416 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 01:45:47,537 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 01:45:47,539 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 01:45:47,539 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 01:45:47,540 INFO L158 Benchmark]: Toolchain (without parser) took 6883.09ms. Allocated memory was 192.9MB in the beginning and 358.6MB in the end (delta: 165.7MB). Free memory was 124.8MB in the beginning and 299.5MB in the end (delta: -174.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 01:45:47,541 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 192.9MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 01:45:47,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.10ms. Allocated memory is still 192.9MB. Free memory was 124.5MB in the beginning and 110.0MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-19 01:45:47,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.80ms. Allocated memory is still 192.9MB. Free memory was 110.0MB in the beginning and 107.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 01:45:47,541 INFO L158 Benchmark]: Boogie Preprocessor took 85.27ms. Allocated memory is still 192.9MB. Free memory was 107.3MB in the beginning and 104.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 01:45:47,542 INFO L158 Benchmark]: RCFGBuilder took 1159.04ms. Allocated memory is still 192.9MB. Free memory was 103.8MB in the beginning and 62.8MB in the end (delta: 41.0MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2024-11-19 01:45:47,542 INFO L158 Benchmark]: TraceAbstraction took 5087.72ms. Allocated memory was 192.9MB in the beginning and 358.6MB in the end (delta: 165.7MB). Free memory was 61.8MB in the beginning and 306.9MB in the end (delta: -245.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 01:45:47,542 INFO L158 Benchmark]: Witness Printer took 146.02ms. Allocated memory is still 358.6MB. Free memory was 306.9MB in the beginning and 299.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-19 01:45:47,544 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 192.9MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.10ms. Allocated memory is still 192.9MB. Free memory was 124.5MB in the beginning and 110.0MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.80ms. Allocated memory is still 192.9MB. Free memory was 110.0MB in the beginning and 107.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.27ms. Allocated memory is still 192.9MB. Free memory was 107.3MB in the beginning and 104.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1159.04ms. Allocated memory is still 192.9MB. Free memory was 103.8MB in the beginning and 62.8MB in the end (delta: 41.0MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5087.72ms. Allocated memory was 192.9MB in the beginning and 358.6MB in the end (delta: 165.7MB). Free memory was 61.8MB in the beginning and 306.9MB in the end (delta: -245.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 146.02ms. Allocated memory is still 358.6MB. Free memory was 306.9MB in the beginning and 299.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 25 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 55 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 252 IncrementalHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 252 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 104 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 685 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 01:45:47,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE