./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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 ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i -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 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:18:34,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:18:34,119 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:18:34,127 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:18:34,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:18:34,155 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:18:34,155 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:18:34,156 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:18:34,156 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:18:34,156 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:18:34,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:18:34,157 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:18:34,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:18:34,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:18:34,157 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:18:34,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:18:34,172 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:18:34,172 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:18:34,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:18:34,173 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:18:34,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:18:34,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:18:34,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:18:34,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:18:34,174 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:18:34,175 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:18:34,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:18:34,175 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:18:34,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:18:34,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:18:34,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:18:34,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:18:34,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:18:34,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:18:34,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:18:34,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:18:34,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:18:34,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:18:34,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:18:34,178 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:18:34,178 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:18:34,181 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:18:34,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:18:34,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b [2024-06-27 16:18:34,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:18:34,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:18:34,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:18:34,377 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:18:34,378 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:18:34,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2024-06-27 16:18:35,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:18:35,680 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:18:35,682 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2024-06-27 16:18:35,696 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8da32359/83ccbc9cd6874b60b38bf3ffec5e4390/FLAG88a54c550 [2024-06-27 16:18:35,706 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8da32359/83ccbc9cd6874b60b38bf3ffec5e4390 [2024-06-27 16:18:35,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:18:35,709 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:18:35,710 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:18:35,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:18:35,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:18:35,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:18:35" (1/1) ... [2024-06-27 16:18:35,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f9e171f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:35, skipping insertion in model container [2024-06-27 16:18:35,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:18:35" (1/1) ... [2024-06-27 16:18:35,761 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:18:36,006 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i[31246,31259] [2024-06-27 16:18:36,021 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:18:36,029 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:18:36,064 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i[31246,31259] [2024-06-27 16:18:36,069 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:18:36,100 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:18:36,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36 WrapperNode [2024-06-27 16:18:36,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:18:36,102 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:18:36,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:18:36,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:18:36,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36" (1/1) ... [2024-06-27 16:18:36,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36" (1/1) ... [2024-06-27 16:18:36,156 INFO L138 Inliner]: procedures = 173, calls = 25, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 89 [2024-06-27 16:18:36,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:18:36,157 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:18:36,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:18:36,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:18:36,166 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36" (1/1) ... [2024-06-27 16:18:36,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36" (1/1) ... [2024-06-27 16:18:36,168 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36" (1/1) ... [2024-06-27 16:18:36,178 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]. [2024-06-27 16:18:36,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36" (1/1) ... [2024-06-27 16:18:36,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36" (1/1) ... [2024-06-27 16:18:36,181 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36" (1/1) ... [2024-06-27 16:18:36,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36" (1/1) ... [2024-06-27 16:18:36,183 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36" (1/1) ... [2024-06-27 16:18:36,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36" (1/1) ... [2024-06-27 16:18:36,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:18:36,186 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:18:36,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:18:36,186 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:18:36,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36" (1/1) ... [2024-06-27 16:18:36,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:18:36,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:36,214 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) [2024-06-27 16:18:36,226 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 [2024-06-27 16:18:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:18:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:18:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-06-27 16:18:36,277 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-06-27 16:18:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:18:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:18:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:18:36,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:18:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-06-27 16:18:36,278 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-06-27 16:18:36,280 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:18:36,422 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:18:36,429 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:18:36,542 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:18:36,542 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:18:36,616 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:18:36,616 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 16:18:36,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:18:36 BoogieIcfgContainer [2024-06-27 16:18:36,617 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:18:36,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:18:36,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:18:36,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:18:36,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:18:35" (1/3) ... [2024-06-27 16:18:36,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fc983f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:18:36, skipping insertion in model container [2024-06-27 16:18:36,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:36" (2/3) ... [2024-06-27 16:18:36,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fc983f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:18:36, skipping insertion in model container [2024-06-27 16:18:36,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:18:36" (3/3) ... [2024-06-27 16:18:36,623 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2024-06-27 16:18:36,628 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:18:36,635 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:18:36,636 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:18:36,636 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:18:36,689 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 16:18:36,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 52 transitions, 132 flow [2024-06-27 16:18:36,752 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2024-06-27 16:18:36,753 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 16:18:36,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 48 events. 2/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-27 16:18:36,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 52 transitions, 132 flow [2024-06-27 16:18:36,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 46 transitions, 113 flow [2024-06-27 16:18:36,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:18:36,776 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a2f400f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:18:36,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 16:18:36,783 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:18:36,784 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2024-06-27 16:18:36,784 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 16:18:36,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:36,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:36,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:36,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:36,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1265607429, now seen corresponding path program 1 times [2024-06-27 16:18:36,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:36,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928556845] [2024-06-27 16:18:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:36,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:37,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:37,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928556845] [2024-06-27 16:18:37,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928556845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:37,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:37,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:18:37,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828079223] [2024-06-27 16:18:37,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:37,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:18:37,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:37,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:18:37,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:18:37,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-27 16:18:37,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-27 16:18:37,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:37,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-27 16:18:37,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:39,016 INFO L124 PetriNetUnfolderBase]: 14455/23442 cut-off events. [2024-06-27 16:18:39,016 INFO L125 PetriNetUnfolderBase]: For 2172/2172 co-relation queries the response was YES. [2024-06-27 16:18:39,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44974 conditions, 23442 events. 14455/23442 cut-off events. For 2172/2172 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 183900 event pairs, 1527 based on Foata normal form. 1248/23762 useless extension candidates. Maximal degree in co-relation 39553. Up to 6266 conditions per place. [2024-06-27 16:18:39,141 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 152 selfloop transitions, 29 changer transitions 8/200 dead transitions. [2024-06-27 16:18:39,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 200 transitions, 880 flow [2024-06-27 16:18:39,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 16:18:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 16:18:39,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 368 transitions. [2024-06-27 16:18:39,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6433566433566433 [2024-06-27 16:18:39,153 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 113 flow. Second operand 11 states and 368 transitions. [2024-06-27 16:18:39,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 200 transitions, 880 flow [2024-06-27 16:18:39,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 200 transitions, 819 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 16:18:39,171 INFO L231 Difference]: Finished difference. Result has 68 places, 75 transitions, 298 flow [2024-06-27 16:18:39,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=298, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2024-06-27 16:18:39,175 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 11 predicate places. [2024-06-27 16:18:39,175 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 298 flow [2024-06-27 16:18:39,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-27 16:18:39,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:39,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:39,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:18:39,176 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:39,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:39,177 INFO L85 PathProgramCache]: Analyzing trace with hash -635582357, now seen corresponding path program 1 times [2024-06-27 16:18:39,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:39,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988070462] [2024-06-27 16:18:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:39,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:39,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:39,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988070462] [2024-06-27 16:18:39,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988070462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:39,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:39,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:18:39,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922811710] [2024-06-27 16:18:39,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:39,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:18:39,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:39,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:18:39,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:18:39,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 52 [2024-06-27 16:18:39,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 75 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-06-27 16:18:39,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:39,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 52 [2024-06-27 16:18:39,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:40,194 INFO L124 PetriNetUnfolderBase]: 8080/14335 cut-off events. [2024-06-27 16:18:40,194 INFO L125 PetriNetUnfolderBase]: For 2028/2319 co-relation queries the response was YES. [2024-06-27 16:18:40,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29478 conditions, 14335 events. 8080/14335 cut-off events. For 2028/2319 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 118448 event pairs, 3298 based on Foata normal form. 636/14308 useless extension candidates. Maximal degree in co-relation 26446. Up to 5869 conditions per place. [2024-06-27 16:18:40,258 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 39 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2024-06-27 16:18:40,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 92 transitions, 424 flow [2024-06-27 16:18:40,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:18:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:18:40,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-27 16:18:40,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7243589743589743 [2024-06-27 16:18:40,262 INFO L175 Difference]: Start difference. First operand has 68 places, 75 transitions, 298 flow. Second operand 3 states and 113 transitions. [2024-06-27 16:18:40,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 92 transitions, 424 flow [2024-06-27 16:18:40,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 92 transitions, 424 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:18:40,306 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 314 flow [2024-06-27 16:18:40,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2024-06-27 16:18:40,307 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2024-06-27 16:18:40,307 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 314 flow [2024-06-27 16:18:40,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-06-27 16:18:40,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:40,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:40,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:18:40,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:40,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:40,310 INFO L85 PathProgramCache]: Analyzing trace with hash -371689499, now seen corresponding path program 2 times [2024-06-27 16:18:40,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:40,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501482783] [2024-06-27 16:18:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:40,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:40,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:40,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501482783] [2024-06-27 16:18:40,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501482783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:40,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:40,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:18:40,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135366700] [2024-06-27 16:18:40,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:40,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:18:40,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:40,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:18:40,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:18:40,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 52 [2024-06-27 16:18:40,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-06-27 16:18:40,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:40,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 52 [2024-06-27 16:18:40,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:41,163 INFO L124 PetriNetUnfolderBase]: 5102/10153 cut-off events. [2024-06-27 16:18:41,163 INFO L125 PetriNetUnfolderBase]: For 4069/4174 co-relation queries the response was YES. [2024-06-27 16:18:41,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22219 conditions, 10153 events. 5102/10153 cut-off events. For 4069/4174 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 88332 event pairs, 1529 based on Foata normal form. 116/9870 useless extension candidates. Maximal degree in co-relation 18922. Up to 3529 conditions per place. [2024-06-27 16:18:41,205 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 50 selfloop transitions, 9 changer transitions 3/113 dead transitions. [2024-06-27 16:18:41,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 113 transitions, 540 flow [2024-06-27 16:18:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:18:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:18:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-06-27 16:18:41,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7692307692307693 [2024-06-27 16:18:41,208 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 314 flow. Second operand 4 states and 160 transitions. [2024-06-27 16:18:41,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 113 transitions, 540 flow [2024-06-27 16:18:41,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 113 transitions, 528 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:18:41,252 INFO L231 Difference]: Finished difference. Result has 75 places, 81 transitions, 372 flow [2024-06-27 16:18:41,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2024-06-27 16:18:41,254 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-06-27 16:18:41,254 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 372 flow [2024-06-27 16:18:41,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-06-27 16:18:41,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:41,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:41,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:18:41,255 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:41,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash 586943535, now seen corresponding path program 1 times [2024-06-27 16:18:41,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:41,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853073922] [2024-06-27 16:18:41,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:41,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:41,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:41,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853073922] [2024-06-27 16:18:41,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853073922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:41,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:41,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:18:41,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096709968] [2024-06-27 16:18:41,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:41,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:18:41,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:41,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:18:41,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:18:41,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-27 16:18:41,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-06-27 16:18:41,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:41,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-27 16:18:41,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:42,754 INFO L124 PetriNetUnfolderBase]: 12798/20636 cut-off events. [2024-06-27 16:18:42,754 INFO L125 PetriNetUnfolderBase]: For 17833/18171 co-relation queries the response was YES. [2024-06-27 16:18:42,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53371 conditions, 20636 events. 12798/20636 cut-off events. For 17833/18171 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 150738 event pairs, 2069 based on Foata normal form. 217/20557 useless extension candidates. Maximal degree in co-relation 48073. Up to 4446 conditions per place. [2024-06-27 16:18:42,837 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 154 selfloop transitions, 55 changer transitions 43/269 dead transitions. [2024-06-27 16:18:42,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 269 transitions, 1692 flow [2024-06-27 16:18:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 16:18:42,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 16:18:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 347 transitions. [2024-06-27 16:18:42,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6066433566433567 [2024-06-27 16:18:42,839 INFO L175 Difference]: Start difference. First operand has 75 places, 81 transitions, 372 flow. Second operand 11 states and 347 transitions. [2024-06-27 16:18:42,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 269 transitions, 1692 flow [2024-06-27 16:18:42,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 269 transitions, 1692 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:18:42,983 INFO L231 Difference]: Finished difference. Result has 93 places, 123 transitions, 836 flow [2024-06-27 16:18:42,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=836, PETRI_PLACES=93, PETRI_TRANSITIONS=123} [2024-06-27 16:18:42,984 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 36 predicate places. [2024-06-27 16:18:42,984 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 123 transitions, 836 flow [2024-06-27 16:18:42,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-06-27 16:18:42,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:42,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:42,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:18:42,985 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:42,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:42,986 INFO L85 PathProgramCache]: Analyzing trace with hash -664613979, now seen corresponding path program 1 times [2024-06-27 16:18:42,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:42,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468192040] [2024-06-27 16:18:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:42,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:43,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468192040] [2024-06-27 16:18:43,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468192040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:43,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:43,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:18:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668706110] [2024-06-27 16:18:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:18:43,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:18:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:18:43,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-27 16:18:43,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 123 transitions, 836 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-06-27 16:18:43,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:43,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-27 16:18:43,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:44,860 INFO L124 PetriNetUnfolderBase]: 11611/19330 cut-off events. [2024-06-27 16:18:44,869 INFO L125 PetriNetUnfolderBase]: For 27387/27495 co-relation queries the response was YES. [2024-06-27 16:18:44,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57249 conditions, 19330 events. 11611/19330 cut-off events. For 27387/27495 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 146207 event pairs, 2026 based on Foata normal form. 207/19493 useless extension candidates. Maximal degree in co-relation 52497. Up to 5042 conditions per place. [2024-06-27 16:18:45,026 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 149 selfloop transitions, 62 changer transitions 10/238 dead transitions. [2024-06-27 16:18:45,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 238 transitions, 1798 flow [2024-06-27 16:18:45,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 16:18:45,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 16:18:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2024-06-27 16:18:45,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2024-06-27 16:18:45,028 INFO L175 Difference]: Start difference. First operand has 93 places, 123 transitions, 836 flow. Second operand 10 states and 307 transitions. [2024-06-27 16:18:45,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 238 transitions, 1798 flow [2024-06-27 16:18:45,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 238 transitions, 1776 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 16:18:45,276 INFO L231 Difference]: Finished difference. Result has 106 places, 134 transitions, 1111 flow [2024-06-27 16:18:45,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1111, PETRI_PLACES=106, PETRI_TRANSITIONS=134} [2024-06-27 16:18:45,280 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 49 predicate places. [2024-06-27 16:18:45,280 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 134 transitions, 1111 flow [2024-06-27 16:18:45,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-06-27 16:18:45,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:45,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:45,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:18:45,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:45,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:45,282 INFO L85 PathProgramCache]: Analyzing trace with hash -951663205, now seen corresponding path program 1 times [2024-06-27 16:18:45,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:45,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805140535] [2024-06-27 16:18:45,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:45,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:45,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:45,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805140535] [2024-06-27 16:18:45,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805140535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:45,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:45,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:18:45,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100808622] [2024-06-27 16:18:45,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:45,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:18:45,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:45,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:18:45,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:18:45,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-27 16:18:45,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 134 transitions, 1111 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-06-27 16:18:45,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:45,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-27 16:18:45,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:47,201 INFO L124 PetriNetUnfolderBase]: 12202/20141 cut-off events. [2024-06-27 16:18:47,202 INFO L125 PetriNetUnfolderBase]: For 36751/36899 co-relation queries the response was YES. [2024-06-27 16:18:47,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62675 conditions, 20141 events. 12202/20141 cut-off events. For 36751/36899 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 151071 event pairs, 2300 based on Foata normal form. 251/20275 useless extension candidates. Maximal degree in co-relation 57130. Up to 4756 conditions per place. [2024-06-27 16:18:47,306 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 156 selfloop transitions, 68 changer transitions 20/267 dead transitions. [2024-06-27 16:18:47,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 267 transitions, 2213 flow [2024-06-27 16:18:47,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 16:18:47,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 16:18:47,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 320 transitions. [2024-06-27 16:18:47,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-06-27 16:18:47,308 INFO L175 Difference]: Start difference. First operand has 106 places, 134 transitions, 1111 flow. Second operand 10 states and 320 transitions. [2024-06-27 16:18:47,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 267 transitions, 2213 flow [2024-06-27 16:18:47,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 267 transitions, 2204 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 16:18:47,581 INFO L231 Difference]: Finished difference. Result has 119 places, 148 transitions, 1462 flow [2024-06-27 16:18:47,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1462, PETRI_PLACES=119, PETRI_TRANSITIONS=148} [2024-06-27 16:18:47,581 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 62 predicate places. [2024-06-27 16:18:47,582 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 148 transitions, 1462 flow [2024-06-27 16:18:47,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-06-27 16:18:47,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:47,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:47,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:18:47,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:47,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:47,583 INFO L85 PathProgramCache]: Analyzing trace with hash -319968369, now seen corresponding path program 1 times [2024-06-27 16:18:47,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:47,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127166043] [2024-06-27 16:18:47,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:47,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:47,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:47,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127166043] [2024-06-27 16:18:47,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127166043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:47,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:47,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:18:47,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143143116] [2024-06-27 16:18:47,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:47,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:18:47,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:47,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:18:47,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:18:47,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 52 [2024-06-27 16:18:47,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 148 transitions, 1462 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2024-06-27 16:18:47,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:47,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 52 [2024-06-27 16:18:47,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:48,628 INFO L124 PetriNetUnfolderBase]: 4484/10214 cut-off events. [2024-06-27 16:18:48,629 INFO L125 PetriNetUnfolderBase]: For 21832/22147 co-relation queries the response was YES. [2024-06-27 16:18:48,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32491 conditions, 10214 events. 4484/10214 cut-off events. For 21832/22147 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 97862 event pairs, 1402 based on Foata normal form. 407/10468 useless extension candidates. Maximal degree in co-relation 31978. Up to 2636 conditions per place. [2024-06-27 16:18:48,674 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 44 selfloop transitions, 8 changer transitions 32/158 dead transitions. [2024-06-27 16:18:48,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 158 transitions, 1296 flow [2024-06-27 16:18:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:18:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:18:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-06-27 16:18:48,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192307692307692 [2024-06-27 16:18:48,676 INFO L175 Difference]: Start difference. First operand has 119 places, 148 transitions, 1462 flow. Second operand 5 states and 187 transitions. [2024-06-27 16:18:48,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 158 transitions, 1296 flow [2024-06-27 16:18:48,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 158 transitions, 1208 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 16:18:48,822 INFO L231 Difference]: Finished difference. Result has 118 places, 103 transitions, 804 flow [2024-06-27 16:18:48,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=804, PETRI_PLACES=118, PETRI_TRANSITIONS=103} [2024-06-27 16:18:48,823 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 61 predicate places. [2024-06-27 16:18:48,823 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 103 transitions, 804 flow [2024-06-27 16:18:48,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2024-06-27 16:18:48,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:48,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:48,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 16:18:48,823 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:48,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1031734119, now seen corresponding path program 2 times [2024-06-27 16:18:48,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:48,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542318074] [2024-06-27 16:18:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:48,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:48,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:48,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542318074] [2024-06-27 16:18:48,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542318074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:48,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:48,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:18:48,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683448597] [2024-06-27 16:18:48,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:48,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:18:48,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:48,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:18:48,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:18:48,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 52 [2024-06-27 16:18:48,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 103 transitions, 804 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2024-06-27 16:18:48,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:48,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 52 [2024-06-27 16:18:48,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:49,296 INFO L124 PetriNetUnfolderBase]: 2176/4926 cut-off events. [2024-06-27 16:18:49,296 INFO L125 PetriNetUnfolderBase]: For 9994/10002 co-relation queries the response was YES. [2024-06-27 16:18:49,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15918 conditions, 4926 events. 2176/4926 cut-off events. For 9994/10002 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 39676 event pairs, 854 based on Foata normal form. 55/4928 useless extension candidates. Maximal degree in co-relation 15888. Up to 1579 conditions per place. [2024-06-27 16:18:49,312 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 0 selfloop transitions, 0 changer transitions 92/92 dead transitions. [2024-06-27 16:18:49,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 92 transitions, 610 flow [2024-06-27 16:18:49,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:18:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:18:49,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2024-06-27 16:18:49,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6846153846153846 [2024-06-27 16:18:49,315 INFO L175 Difference]: Start difference. First operand has 118 places, 103 transitions, 804 flow. Second operand 5 states and 178 transitions. [2024-06-27 16:18:49,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 92 transitions, 610 flow [2024-06-27 16:18:49,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 506 flow, removed 12 selfloop flow, removed 20 redundant places. [2024-06-27 16:18:49,351 INFO L231 Difference]: Finished difference. Result has 89 places, 0 transitions, 0 flow [2024-06-27 16:18:49,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=89, PETRI_TRANSITIONS=0} [2024-06-27 16:18:49,354 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-06-27 16:18:49,356 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 0 transitions, 0 flow [2024-06-27 16:18:49,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2024-06-27 16:18:49,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-06-27 16:18:49,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2024-06-27 16:18:49,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-06-27 16:18:49,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-06-27 16:18:49,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 16:18:49,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-06-27 16:18:49,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-06-27 16:18:49,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 16:18:49,363 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2024-06-27 16:18:49,367 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 16:18:49,367 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 16:18:49,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 04:18:49 BasicIcfg [2024-06-27 16:18:49,371 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 16:18:49,372 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 16:18:49,372 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 16:18:49,372 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 16:18:49,372 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:18:36" (3/4) ... [2024-06-27 16:18:49,373 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 16:18:49,375 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2024-06-27 16:18:49,376 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2024-06-27 16:18:49,378 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2024-06-27 16:18:49,378 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-06-27 16:18:49,378 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-06-27 16:18:49,378 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-06-27 16:18:49,453 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 16:18:49,453 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 16:18:49,453 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 16:18:49,454 INFO L158 Benchmark]: Toolchain (without parser) took 13744.40ms. Allocated memory was 140.5MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 83.8MB in the beginning and 6.7GB in the end (delta: -6.6GB). Peak memory consumption was 825.8MB. Max. memory is 16.1GB. [2024-06-27 16:18:49,454 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 140.5MB. Free memory is still 101.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 16:18:49,454 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.30ms. Allocated memory is still 140.5MB. Free memory was 83.4MB in the beginning and 62.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-27 16:18:49,454 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.58ms. Allocated memory is still 140.5MB. Free memory was 62.4MB in the beginning and 110.3MB in the end (delta: -47.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2024-06-27 16:18:49,455 INFO L158 Benchmark]: Boogie Preprocessor took 28.28ms. Allocated memory is still 140.5MB. Free memory was 110.3MB in the beginning and 108.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:18:49,455 INFO L158 Benchmark]: RCFGBuilder took 430.83ms. Allocated memory is still 140.5MB. Free memory was 108.2MB in the beginning and 87.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-27 16:18:49,455 INFO L158 Benchmark]: TraceAbstraction took 12752.90ms. Allocated memory was 140.5MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 86.6MB in the beginning and 6.7GB in the end (delta: -6.6GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-06-27 16:18:49,455 INFO L158 Benchmark]: Witness Printer took 81.74ms. Allocated memory is still 7.6GB. Free memory was 6.7GB in the beginning and 6.7GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:18:49,461 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 140.5MB. Free memory is still 101.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.30ms. Allocated memory is still 140.5MB. Free memory was 83.4MB in the beginning and 62.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.58ms. Allocated memory is still 140.5MB. Free memory was 62.4MB in the beginning and 110.3MB in the end (delta: -47.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.28ms. Allocated memory is still 140.5MB. Free memory was 110.3MB in the beginning and 108.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 430.83ms. Allocated memory is still 140.5MB. Free memory was 108.2MB in the beginning and 87.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 12752.90ms. Allocated memory was 140.5MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 86.6MB in the beginning and 6.7GB in the end (delta: -6.6GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 81.74ms. Allocated memory is still 7.6GB. Free memory was 6.7GB in the beginning and 6.7GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 739]: 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 7 procedures, 73 locations, 7 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: 12.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 716 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 679 mSDsluCounter, 151 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1981 IncrementalHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 59 mSDtfsCounter, 1981 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1462occurred in iteration=6, InterpolantAutomatonStates: 59, 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, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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! [2024-06-27 16:18:49,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE