./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/read_write_lock-1.yml/witness.yml --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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/read_write_lock-1.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:21:40,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:21:40,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:21:40,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:21:40,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:21:40,980 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:21:40,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:21:40,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:21:40,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:21:40,985 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:21:40,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:21:40,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:21:40,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:21:40,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:21:40,987 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:21:40,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:21:40,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:21:40,988 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:21:40,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:21:40,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:21:40,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:21:40,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:21:40,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:21:40,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:21:40,990 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:21:40,990 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:21:40,990 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:21:40,990 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:21:40,991 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:21:40,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:21:40,992 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:21:40,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:21:40,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:21:40,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:21:40,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:21:40,993 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:21:40,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:21:40,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:21:40,993 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:21:40,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:21:40,994 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:21:40,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:21:40,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:21:40,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:21:41,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:21:41,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:21:41,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:21:41,246 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:21:41,247 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:21:41,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2024-06-28 02:21:42,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:21:42,515 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:21:42,522 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2024-06-28 02:21:42,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33c0263f4/f126dae2ec2d4b7a840b46ee166e11fa/FLAG8e9ba1775 [2024-06-28 02:21:42,543 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33c0263f4/f126dae2ec2d4b7a840b46ee166e11fa [2024-06-28 02:21:42,548 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:21:42,548 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:21:42,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/read_write_lock-1.yml/witness.yml [2024-06-28 02:21:42,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:21:42,659 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:21:42,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:21:42,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:21:42,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:21:42,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:21:42" (1/2) ... [2024-06-28 02:21:42,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4baa486e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:21:42, skipping insertion in model container [2024-06-28 02:21:42,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:21:42" (1/2) ... [2024-06-28 02:21:42,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f0e0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:21:42, skipping insertion in model container [2024-06-28 02:21:42,669 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:21:42" (2/2) ... [2024-06-28 02:21:42,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4baa486e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:42, skipping insertion in model container [2024-06-28 02:21:42,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:21:42" (2/2) ... [2024-06-28 02:21:42,670 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:21:42,703 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:21:42,705 INFO L97 edCorrectnessWitness]: Location invariant before [L746-L746] (((! multithreaded || (x == 0 || x == 3)) && (! multithreaded || (y == 0 || y == 3))) && (! multithreaded || ((w == 0 || w == 1) && (y == 0 || y == 3)))) && (! multithreaded || (w == 0 || w == 1)) [2024-06-28 02:21:42,705 INFO L97 edCorrectnessWitness]: Location invariant before [L748-L748] (((! multithreaded || (x == 0 || x == 3)) && (! multithreaded || (y == 0 || y == 3))) && (! multithreaded || ((w == 0 || w == 1) && (y == 0 || y == 3)))) && (! multithreaded || (w == 0 || w == 1)) [2024-06-28 02:21:42,705 INFO L97 edCorrectnessWitness]: Location invariant before [L747-L747] (((! multithreaded || (x == 0 || x == 3)) && (! multithreaded || (y == 0 || y == 3))) && (! multithreaded || ((w == 0 || w == 1) && (y == 0 || y == 3)))) && (! multithreaded || (w == 0 || w == 1)) [2024-06-28 02:21:42,705 INFO L97 edCorrectnessWitness]: Location invariant before [L749-L749] (((! multithreaded || (x == 0 || x == 3)) && (! multithreaded || (y == 0 || y == 3))) && (! multithreaded || ((w == 0 || w == 1) && (y == 0 || y == 3)))) && (! multithreaded || (w == 0 || w == 1)) [2024-06-28 02:21:42,705 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:21:42,706 INFO L106 edCorrectnessWitness]: ghost_update [L745-L745] multithreaded = 1; [2024-06-28 02:21:42,750 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:21:43,075 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:21:43,083 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:21:43,163 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:21:43,196 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:21:43,197 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43 WrapperNode [2024-06-28 02:21:43,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:21:43,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:21:43,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:21:43,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:21:43,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43" (1/1) ... [2024-06-28 02:21:43,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43" (1/1) ... [2024-06-28 02:21:43,261 INFO L138 Inliner]: procedures = 173, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 98 [2024-06-28 02:21:43,262 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:21:43,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:21:43,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:21:43,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:21:43,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43" (1/1) ... [2024-06-28 02:21:43,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43" (1/1) ... [2024-06-28 02:21:43,277 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43" (1/1) ... [2024-06-28 02:21:43,296 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]. [2024-06-28 02:21:43,296 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43" (1/1) ... [2024-06-28 02:21:43,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43" (1/1) ... [2024-06-28 02:21:43,311 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43" (1/1) ... [2024-06-28 02:21:43,313 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43" (1/1) ... [2024-06-28 02:21:43,317 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43" (1/1) ... [2024-06-28 02:21:43,318 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43" (1/1) ... [2024-06-28 02:21:43,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:21:43,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:21:43,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:21:43,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:21:43,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43" (1/1) ... [2024-06-28 02:21:43,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:21:43,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:21:43,350 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) [2024-06-28 02:21:43,356 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 [2024-06-28 02:21:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:21:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:21:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-06-28 02:21:43,381 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-06-28 02:21:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:21:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:21:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:21:43,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:21:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-06-28 02:21:43,382 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-06-28 02:21:43,383 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:21:43,473 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:21:43,475 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:21:43,711 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:21:43,711 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:21:43,796 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:21:43,796 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:21:43,797 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:21:43 BoogieIcfgContainer [2024-06-28 02:21:43,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:21:43,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:21:43,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:21:43,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:21:43,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:21:42" (1/4) ... [2024-06-28 02:21:43,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfaa13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:21:43, skipping insertion in model container [2024-06-28 02:21:43,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:21:42" (2/4) ... [2024-06-28 02:21:43,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfaa13d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:21:43, skipping insertion in model container [2024-06-28 02:21:43,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:43" (3/4) ... [2024-06-28 02:21:43,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfaa13d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:21:43, skipping insertion in model container [2024-06-28 02:21:43,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:21:43" (4/4) ... [2024-06-28 02:21:43,805 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2024-06-28 02:21:43,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:21:43,819 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 02:21:43,819 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:21:43,873 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-28 02:21:43,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 55 transitions, 138 flow [2024-06-28 02:21:43,931 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2024-06-28 02:21:43,931 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-28 02:21:43,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 51 events. 0/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-28 02:21:43,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 55 transitions, 138 flow [2024-06-28 02:21:43,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 45 transitions, 102 flow [2024-06-28 02:21:43,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:21:43,950 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=false, 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;@57d51555, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:21:43,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 02:21:43,952 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:21:43,953 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 02:21:43,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:21:43,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:43,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:21:43,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:21:43,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash 237533242, now seen corresponding path program 1 times [2024-06-28 02:21:43,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:43,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60959698] [2024-06-28 02:21:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:43,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:44,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:44,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60959698] [2024-06-28 02:21:44,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60959698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:44,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:44,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:21:44,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353181804] [2024-06-28 02:21:44,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:44,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:21:44,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:44,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:21:44,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:21:44,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-06-28 02:21:44,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-28 02:21:44,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:44,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-06-28 02:21:44,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:45,393 INFO L124 PetriNetUnfolderBase]: 7973/11887 cut-off events. [2024-06-28 02:21:45,393 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-06-28 02:21:45,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23069 conditions, 11887 events. 7973/11887 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 72043 event pairs, 4535 based on Foata normal form. 9/11678 useless extension candidates. Maximal degree in co-relation 23056. Up to 10819 conditions per place. [2024-06-28 02:21:45,512 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 47 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2024-06-28 02:21:45,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 251 flow [2024-06-28 02:21:45,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:21:45,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:21:45,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-28 02:21:45,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6303030303030303 [2024-06-28 02:21:45,523 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 104 transitions. [2024-06-28 02:21:45,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 251 flow [2024-06-28 02:21:45,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 244 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:21:45,529 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 137 flow [2024-06-28 02:21:45,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-28 02:21:45,533 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -1 predicate places. [2024-06-28 02:21:45,533 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 137 flow [2024-06-28 02:21:45,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-28 02:21:45,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:45,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:45,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:21:45,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:21:45,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:45,535 INFO L85 PathProgramCache]: Analyzing trace with hash 637084125, now seen corresponding path program 1 times [2024-06-28 02:21:45,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:45,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968687478] [2024-06-28 02:21:45,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:45,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:45,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:45,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968687478] [2024-06-28 02:21:45,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968687478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:45,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:45,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:21:45,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66252630] [2024-06-28 02:21:45,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:45,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:21:45,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:45,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:21:45,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:21:45,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-28 02:21:45,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-06-28 02:21:45,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:45,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-28 02:21:45,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:46,838 INFO L124 PetriNetUnfolderBase]: 12553/18106 cut-off events. [2024-06-28 02:21:46,839 INFO L125 PetriNetUnfolderBase]: For 2961/2961 co-relation queries the response was YES. [2024-06-28 02:21:46,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39812 conditions, 18106 events. 12553/18106 cut-off events. For 2961/2961 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 106983 event pairs, 6762 based on Foata normal form. 115/18135 useless extension candidates. Maximal degree in co-relation 39800. Up to 16792 conditions per place. [2024-06-28 02:21:46,951 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 61 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2024-06-28 02:21:46,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 353 flow [2024-06-28 02:21:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:21:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:21:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-06-28 02:21:46,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090909090909091 [2024-06-28 02:21:46,957 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 137 flow. Second operand 4 states and 134 transitions. [2024-06-28 02:21:46,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 353 flow [2024-06-28 02:21:46,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:21:46,960 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 192 flow [2024-06-28 02:21:46,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-06-28 02:21:46,962 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2024-06-28 02:21:46,962 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 192 flow [2024-06-28 02:21:46,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-06-28 02:21:46,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:46,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:46,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:21:46,965 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:21:46,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1725227283, now seen corresponding path program 1 times [2024-06-28 02:21:46,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:46,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684684769] [2024-06-28 02:21:46,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:46,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:47,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:47,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684684769] [2024-06-28 02:21:47,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684684769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:47,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:47,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:21:47,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724213851] [2024-06-28 02:21:47,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:47,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:21:47,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:47,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:21:47,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:21:47,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-28 02:21:47,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-06-28 02:21:47,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:47,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-28 02:21:47,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:48,261 INFO L124 PetriNetUnfolderBase]: 11740/17100 cut-off events. [2024-06-28 02:21:48,261 INFO L125 PetriNetUnfolderBase]: For 9422/9422 co-relation queries the response was YES. [2024-06-28 02:21:48,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43890 conditions, 17100 events. 11740/17100 cut-off events. For 9422/9422 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 101943 event pairs, 4126 based on Foata normal form. 339/17270 useless extension candidates. Maximal degree in co-relation 43876. Up to 13739 conditions per place. [2024-06-28 02:21:48,376 INFO L140 encePairwiseOnDemand]: 40/55 looper letters, 81 selfloop transitions, 21 changer transitions 0/111 dead transitions. [2024-06-28 02:21:48,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 111 transitions, 588 flow [2024-06-28 02:21:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:21:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:21:48,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-06-28 02:21:48,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6327272727272727 [2024-06-28 02:21:48,380 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 192 flow. Second operand 5 states and 174 transitions. [2024-06-28 02:21:48,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 111 transitions, 588 flow [2024-06-28 02:21:48,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 111 transitions, 572 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:21:48,386 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 345 flow [2024-06-28 02:21:48,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-06-28 02:21:48,387 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2024-06-28 02:21:48,387 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 345 flow [2024-06-28 02:21:48,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-06-28 02:21:48,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:48,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:48,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:21:48,388 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:21:48,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1913777988, now seen corresponding path program 1 times [2024-06-28 02:21:48,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:48,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187346252] [2024-06-28 02:21:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:48,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:48,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:48,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187346252] [2024-06-28 02:21:48,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187346252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:48,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:48,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:21:48,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057067470] [2024-06-28 02:21:48,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:48,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:21:48,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:48,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:21:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:21:48,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-28 02:21:48,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 345 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-06-28 02:21:48,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:48,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-28 02:21:48,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:49,664 INFO L124 PetriNetUnfolderBase]: 11526/16755 cut-off events. [2024-06-28 02:21:49,664 INFO L125 PetriNetUnfolderBase]: For 27421/27430 co-relation queries the response was YES. [2024-06-28 02:21:49,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53614 conditions, 16755 events. 11526/16755 cut-off events. For 27421/27430 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 99581 event pairs, 3905 based on Foata normal form. 110/16702 useless extension candidates. Maximal degree in co-relation 53597. Up to 13709 conditions per place. [2024-06-28 02:21:49,779 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 81 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-06-28 02:21:49,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 107 transitions, 671 flow [2024-06-28 02:21:49,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:21:49,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:21:49,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-06-28 02:21:49,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.610909090909091 [2024-06-28 02:21:49,781 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 345 flow. Second operand 5 states and 168 transitions. [2024-06-28 02:21:49,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 107 transitions, 671 flow [2024-06-28 02:21:49,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 107 transitions, 663 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 02:21:49,788 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 375 flow [2024-06-28 02:21:49,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=375, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-06-28 02:21:49,789 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2024-06-28 02:21:49,789 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 375 flow [2024-06-28 02:21:49,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-06-28 02:21:49,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:49,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:49,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:21:49,790 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:21:49,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:49,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1287653364, now seen corresponding path program 1 times [2024-06-28 02:21:49,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:49,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643585478] [2024-06-28 02:21:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:49,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:49,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:49,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643585478] [2024-06-28 02:21:49,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643585478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:49,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:49,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:21:49,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449044496] [2024-06-28 02:21:49,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:49,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:21:49,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:49,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:21:49,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:21:49,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-06-28 02:21:49,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 375 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-06-28 02:21:49,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:49,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-06-28 02:21:49,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:51,146 INFO L124 PetriNetUnfolderBase]: 11842/17691 cut-off events. [2024-06-28 02:21:51,147 INFO L125 PetriNetUnfolderBase]: For 36007/36021 co-relation queries the response was YES. [2024-06-28 02:21:51,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58429 conditions, 17691 events. 11842/17691 cut-off events. For 36007/36021 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 111207 event pairs, 4815 based on Foata normal form. 50/17428 useless extension candidates. Maximal degree in co-relation 58409. Up to 15313 conditions per place. [2024-06-28 02:21:51,364 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 92 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-06-28 02:21:51,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 121 transitions, 840 flow [2024-06-28 02:21:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:21:51,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:21:51,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-28 02:21:51,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-06-28 02:21:51,366 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 375 flow. Second operand 6 states and 185 transitions. [2024-06-28 02:21:51,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 121 transitions, 840 flow [2024-06-28 02:21:51,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 121 transitions, 798 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:21:51,391 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 506 flow [2024-06-28 02:21:51,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2024-06-28 02:21:51,393 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2024-06-28 02:21:51,393 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 506 flow [2024-06-28 02:21:51,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-06-28 02:21:51,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:51,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:51,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:21:51,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:21:51,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:51,395 INFO L85 PathProgramCache]: Analyzing trace with hash -469017365, now seen corresponding path program 1 times [2024-06-28 02:21:51,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:51,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700270850] [2024-06-28 02:21:51,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:51,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:51,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:51,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700270850] [2024-06-28 02:21:51,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700270850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:51,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:51,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:21:51,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056790420] [2024-06-28 02:21:51,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:51,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:21:51,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:51,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:21:51,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:21:51,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-28 02:21:51,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 506 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-06-28 02:21:51,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:51,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-28 02:21:51,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:52,810 INFO L124 PetriNetUnfolderBase]: 12933/18999 cut-off events. [2024-06-28 02:21:52,810 INFO L125 PetriNetUnfolderBase]: For 52045/52048 co-relation queries the response was YES. [2024-06-28 02:21:52,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64419 conditions, 18999 events. 12933/18999 cut-off events. For 52045/52048 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 116330 event pairs, 4573 based on Foata normal form. 716/19540 useless extension candidates. Maximal degree in co-relation 64398. Up to 15514 conditions per place. [2024-06-28 02:21:52,926 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 130 selfloop transitions, 25 changer transitions 0/163 dead transitions. [2024-06-28 02:21:52,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 163 transitions, 1152 flow [2024-06-28 02:21:52,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:21:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:21:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2024-06-28 02:21:52,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6484848484848484 [2024-06-28 02:21:52,930 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 506 flow. Second operand 6 states and 214 transitions. [2024-06-28 02:21:52,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 163 transitions, 1152 flow [2024-06-28 02:21:52,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 163 transitions, 1142 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 02:21:52,962 INFO L231 Difference]: Finished difference. Result has 81 places, 89 transitions, 695 flow [2024-06-28 02:21:52,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=695, PETRI_PLACES=81, PETRI_TRANSITIONS=89} [2024-06-28 02:21:52,965 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2024-06-28 02:21:52,965 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 89 transitions, 695 flow [2024-06-28 02:21:52,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-06-28 02:21:52,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:52,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:52,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:21:52,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:21:52,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:52,966 INFO L85 PathProgramCache]: Analyzing trace with hash -484254485, now seen corresponding path program 2 times [2024-06-28 02:21:52,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:52,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250447923] [2024-06-28 02:21:52,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:52,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:53,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:53,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250447923] [2024-06-28 02:21:53,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250447923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:53,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:53,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:21:53,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291719164] [2024-06-28 02:21:53,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:53,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:21:53,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:53,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:21:53,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:21:53,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-28 02:21:53,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 89 transitions, 695 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-06-28 02:21:53,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:53,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-28 02:21:53,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:54,660 INFO L124 PetriNetUnfolderBase]: 13238/19672 cut-off events. [2024-06-28 02:21:54,660 INFO L125 PetriNetUnfolderBase]: For 82162/82169 co-relation queries the response was YES. [2024-06-28 02:21:54,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74943 conditions, 19672 events. 13238/19672 cut-off events. For 82162/82169 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 123676 event pairs, 4519 based on Foata normal form. 74/19568 useless extension candidates. Maximal degree in co-relation 74917. Up to 15670 conditions per place. [2024-06-28 02:21:54,802 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 125 selfloop transitions, 41 changer transitions 0/174 dead transitions. [2024-06-28 02:21:54,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 174 transitions, 1396 flow [2024-06-28 02:21:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:21:54,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:21:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 242 transitions. [2024-06-28 02:21:54,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 02:21:54,804 INFO L175 Difference]: Start difference. First operand has 81 places, 89 transitions, 695 flow. Second operand 8 states and 242 transitions. [2024-06-28 02:21:54,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 174 transitions, 1396 flow [2024-06-28 02:21:54,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 174 transitions, 1355 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-28 02:21:54,886 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 911 flow [2024-06-28 02:21:54,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2024-06-28 02:21:54,887 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2024-06-28 02:21:54,887 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 911 flow [2024-06-28 02:21:54,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-06-28 02:21:54,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:54,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:54,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:21:54,887 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:21:54,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:54,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1654100145, now seen corresponding path program 1 times [2024-06-28 02:21:54,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:54,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707841905] [2024-06-28 02:21:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:54,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:54,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:54,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707841905] [2024-06-28 02:21:54,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707841905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:54,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:54,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:21:54,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567575365] [2024-06-28 02:21:54,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:54,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:21:54,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:54,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:21:54,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:21:54,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2024-06-28 02:21:54,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 911 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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) [2024-06-28 02:21:54,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:54,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2024-06-28 02:21:54,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:55,972 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (= v_~w~0_78 1) (not (= (ite (and (= v_~w~0_79 0) (= v_~r~0_61 0)) 1 0) 0))) InVars {~w~0=v_~w~0_79, ~r~0=v_~r~0_61} OutVars{~w~0=v_~w~0_78, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_61} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][92], [60#L721true, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, 18#L740true, 114#true, 20#L717-1true, writerThread1of1ForFork1InUse, Black: 73#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 94#true, Black: 78#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), Black: 83#(and (= ~w~0 1) (= ~y~0 0)), 49#L740true, Black: 84#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 82#(= ~y~0 0), 128#(= ~r~0 0), 103#true, Black: 92#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0)), Black: 100#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 97#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 80#true, Black: 106#(and (= ~x~0 0) (= ~w~0 1)), Black: 110#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 107#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 123#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 117#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0)), readerThread1of1ForFork3InUse]) [2024-06-28 02:21:55,973 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is cut-off event [2024-06-28 02:21:55,973 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2024-06-28 02:21:55,973 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2024-06-28 02:21:55,973 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2024-06-28 02:21:56,006 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (= v_~w~0_78 1) (not (= (ite (and (= v_~w~0_79 0) (= v_~r~0_61 0)) 1 0) 0))) InVars {~w~0=v_~w~0_79, ~r~0=v_~r~0_61} OutVars{~w~0=v_~w~0_78, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_61} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][92], [60#L721true, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, 18#L740true, 114#true, 20#L717-1true, writerThread1of1ForFork1InUse, Black: 73#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 94#true, Black: 78#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), Black: 83#(and (= ~w~0 1) (= ~y~0 0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 82#(= ~y~0 0), 128#(= ~r~0 0), 103#true, Black: 92#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0)), Black: 100#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 97#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 14#readerEXITtrue, 80#true, Black: 106#(and (= ~x~0 0) (= ~w~0 1)), Black: 110#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 107#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 123#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 117#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0)), readerThread1of1ForFork3InUse]) [2024-06-28 02:21:56,007 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2024-06-28 02:21:56,007 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-28 02:21:56,007 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-28 02:21:56,007 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-28 02:21:56,008 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (= v_~w~0_78 1) (not (= (ite (and (= v_~w~0_79 0) (= v_~r~0_61 0)) 1 0) 0))) InVars {~w~0=v_~w~0_79, ~r~0=v_~r~0_61} OutVars{~w~0=v_~w~0_78, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_61} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][92], [60#L721true, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, 114#true, 20#L717-1true, writerThread1of1ForFork1InUse, Black: 73#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 94#true, Black: 78#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), Black: 83#(and (= ~w~0 1) (= ~y~0 0)), 49#L740true, Black: 84#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 82#(= ~y~0 0), 128#(= ~r~0 0), 103#true, Black: 92#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0)), 26#readerEXITtrue, Black: 100#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 97#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 80#true, Black: 106#(and (= ~x~0 0) (= ~w~0 1)), Black: 110#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 107#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 123#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 117#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0)), readerThread1of1ForFork3InUse]) [2024-06-28 02:21:56,008 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2024-06-28 02:21:56,009 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-28 02:21:56,009 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-28 02:21:56,009 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-28 02:21:56,035 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (= v_~w~0_78 1) (not (= (ite (and (= v_~w~0_79 0) (= v_~r~0_61 0)) 1 0) 0))) InVars {~w~0=v_~w~0_79, ~r~0=v_~r~0_61} OutVars{~w~0=v_~w~0_78, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_61} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][92], [60#L721true, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, 114#true, 20#L717-1true, writerThread1of1ForFork1InUse, Black: 73#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 94#true, Black: 78#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), Black: 83#(and (= ~w~0 1) (= ~y~0 0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 82#(= ~y~0 0), 128#(= ~r~0 0), 103#true, Black: 92#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0)), 26#readerEXITtrue, Black: 100#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 97#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 14#readerEXITtrue, 80#true, Black: 106#(and (= ~x~0 0) (= ~w~0 1)), Black: 110#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 107#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 123#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 117#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0)), readerThread1of1ForFork3InUse]) [2024-06-28 02:21:56,035 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2024-06-28 02:21:56,035 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-28 02:21:56,035 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-28 02:21:56,035 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-28 02:21:56,068 INFO L124 PetriNetUnfolderBase]: 6894/12602 cut-off events. [2024-06-28 02:21:56,068 INFO L125 PetriNetUnfolderBase]: For 83584/85528 co-relation queries the response was YES. [2024-06-28 02:21:56,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47527 conditions, 12602 events. 6894/12602 cut-off events. For 83584/85528 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 103359 event pairs, 2376 based on Foata normal form. 703/12692 useless extension candidates. Maximal degree in co-relation 47498. Up to 4120 conditions per place. [2024-06-28 02:21:56,168 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 61 selfloop transitions, 15 changer transitions 0/125 dead transitions. [2024-06-28 02:21:56,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 125 transitions, 1018 flow [2024-06-28 02:21:56,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:21:56,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:21:56,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-06-28 02:21:56,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2024-06-28 02:21:56,169 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 911 flow. Second operand 4 states and 164 transitions. [2024-06-28 02:21:56,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 125 transitions, 1018 flow [2024-06-28 02:21:56,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 125 transitions, 954 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 02:21:56,241 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 796 flow [2024-06-28 02:21:56,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=796, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2024-06-28 02:21:56,241 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 33 predicate places. [2024-06-28 02:21:56,241 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 796 flow [2024-06-28 02:21:56,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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) [2024-06-28 02:21:56,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:56,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:56,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:21:56,242 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:21:56,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:56,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1542756500, now seen corresponding path program 1 times [2024-06-28 02:21:56,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:56,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175556120] [2024-06-28 02:21:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:56,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:56,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:56,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175556120] [2024-06-28 02:21:56,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175556120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:56,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:56,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:21:56,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656364673] [2024-06-28 02:21:56,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:56,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:21:56,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:56,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:21:56,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:21:56,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-28 02:21:56,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 796 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-06-28 02:21:56,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:56,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-28 02:21:56,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:58,508 INFO L124 PetriNetUnfolderBase]: 16080/24925 cut-off events. [2024-06-28 02:21:58,508 INFO L125 PetriNetUnfolderBase]: For 144284/144290 co-relation queries the response was YES. [2024-06-28 02:21:58,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95964 conditions, 24925 events. 16080/24925 cut-off events. For 144284/144290 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 172839 event pairs, 2297 based on Foata normal form. 468/25290 useless extension candidates. Maximal degree in co-relation 95932. Up to 9441 conditions per place. [2024-06-28 02:21:58,664 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 166 selfloop transitions, 38 changer transitions 0/212 dead transitions. [2024-06-28 02:21:58,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 212 transitions, 2018 flow [2024-06-28 02:21:58,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:21:58,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:21:58,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-06-28 02:21:58,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.693939393939394 [2024-06-28 02:21:58,666 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 796 flow. Second operand 6 states and 229 transitions. [2024-06-28 02:21:58,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 212 transitions, 2018 flow [2024-06-28 02:21:58,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 212 transitions, 1998 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-06-28 02:21:58,875 INFO L231 Difference]: Finished difference. Result has 100 places, 112 transitions, 1276 flow [2024-06-28 02:21:58,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1276, PETRI_PLACES=100, PETRI_TRANSITIONS=112} [2024-06-28 02:21:58,875 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2024-06-28 02:21:58,876 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 112 transitions, 1276 flow [2024-06-28 02:21:58,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-06-28 02:21:58,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:58,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:58,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:21:58,876 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:21:58,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:58,877 INFO L85 PathProgramCache]: Analyzing trace with hash -250988446, now seen corresponding path program 1 times [2024-06-28 02:21:58,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:58,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158452412] [2024-06-28 02:21:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:58,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:58,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:58,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:58,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158452412] [2024-06-28 02:21:58,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158452412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:58,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:58,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:21:58,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394297153] [2024-06-28 02:21:58,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:58,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:21:58,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:58,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:21:58,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:21:58,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-28 02:21:58,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 112 transitions, 1276 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-06-28 02:21:58,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:58,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-28 02:21:58,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:01,023 INFO L124 PetriNetUnfolderBase]: 14991/23653 cut-off events. [2024-06-28 02:22:01,023 INFO L125 PetriNetUnfolderBase]: For 164972/165092 co-relation queries the response was YES. [2024-06-28 02:22:01,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100008 conditions, 23653 events. 14991/23653 cut-off events. For 164972/165092 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 166715 event pairs, 6181 based on Foata normal form. 82/23550 useless extension candidates. Maximal degree in co-relation 99971. Up to 20163 conditions per place. [2024-06-28 02:22:01,248 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 128 selfloop transitions, 12 changer transitions 0/153 dead transitions. [2024-06-28 02:22:01,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 153 transitions, 1772 flow [2024-06-28 02:22:01,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:01,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-06-28 02:22:01,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745454545454546 [2024-06-28 02:22:01,249 INFO L175 Difference]: Start difference. First operand has 100 places, 112 transitions, 1276 flow. Second operand 5 states and 158 transitions. [2024-06-28 02:22:01,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 153 transitions, 1772 flow [2024-06-28 02:22:01,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 153 transitions, 1684 flow, removed 37 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:01,814 INFO L231 Difference]: Finished difference. Result has 104 places, 114 transitions, 1246 flow [2024-06-28 02:22:01,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1246, PETRI_PLACES=104, PETRI_TRANSITIONS=114} [2024-06-28 02:22:01,815 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2024-06-28 02:22:01,815 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 114 transitions, 1246 flow [2024-06-28 02:22:01,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-06-28 02:22:01,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:01,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:01,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:22:01,816 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:22:01,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:01,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1761621262, now seen corresponding path program 1 times [2024-06-28 02:22:01,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:01,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163557534] [2024-06-28 02:22:01,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:01,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:01,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:01,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163557534] [2024-06-28 02:22:01,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163557534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:01,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:01,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:01,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519478146] [2024-06-28 02:22:01,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:01,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:01,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:01,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:01,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:01,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-06-28 02:22:01,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 114 transitions, 1246 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-06-28 02:22:01,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:01,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-06-28 02:22:01,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:03,852 INFO L124 PetriNetUnfolderBase]: 13836/22231 cut-off events. [2024-06-28 02:22:03,852 INFO L125 PetriNetUnfolderBase]: For 152311/152661 co-relation queries the response was YES. [2024-06-28 02:22:03,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93316 conditions, 22231 events. 13836/22231 cut-off events. For 152311/152661 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 162161 event pairs, 6143 based on Foata normal form. 88/21971 useless extension candidates. Maximal degree in co-relation 93277. Up to 18935 conditions per place. [2024-06-28 02:22:04,046 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 130 selfloop transitions, 17 changer transitions 0/167 dead transitions. [2024-06-28 02:22:04,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 167 transitions, 1800 flow [2024-06-28 02:22:04,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-28 02:22:04,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484848484848485 [2024-06-28 02:22:04,047 INFO L175 Difference]: Start difference. First operand has 104 places, 114 transitions, 1246 flow. Second operand 6 states and 181 transitions. [2024-06-28 02:22:04,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 167 transitions, 1800 flow [2024-06-28 02:22:04,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 167 transitions, 1750 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:04,276 INFO L231 Difference]: Finished difference. Result has 107 places, 119 transitions, 1294 flow [2024-06-28 02:22:04,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1294, PETRI_PLACES=107, PETRI_TRANSITIONS=119} [2024-06-28 02:22:04,277 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 49 predicate places. [2024-06-28 02:22:04,277 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 119 transitions, 1294 flow [2024-06-28 02:22:04,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-06-28 02:22:04,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:04,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:04,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:22:04,278 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:22:04,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:04,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1760173171, now seen corresponding path program 1 times [2024-06-28 02:22:04,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:04,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750751836] [2024-06-28 02:22:04,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:04,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:04,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:04,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750751836] [2024-06-28 02:22:04,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750751836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:04,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:04,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104728344] [2024-06-28 02:22:04,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:04,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:04,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:04,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:04,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-28 02:22:04,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 119 transitions, 1294 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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) [2024-06-28 02:22:04,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:04,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-28 02:22:04,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:07,622 INFO L124 PetriNetUnfolderBase]: 21872/33555 cut-off events. [2024-06-28 02:22:07,622 INFO L125 PetriNetUnfolderBase]: For 232258/232416 co-relation queries the response was YES. [2024-06-28 02:22:07,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139653 conditions, 33555 events. 21872/33555 cut-off events. For 232258/232416 co-relation queries the response was YES. Maximal size of possible extension queue 1445. Compared 240379 event pairs, 5396 based on Foata normal form. 392/33775 useless extension candidates. Maximal degree in co-relation 139613. Up to 16003 conditions per place. [2024-06-28 02:22:07,939 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 267 selfloop transitions, 59 changer transitions 0/336 dead transitions. [2024-06-28 02:22:07,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 336 transitions, 3268 flow [2024-06-28 02:22:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 02:22:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 02:22:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 460 transitions. [2024-06-28 02:22:07,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2024-06-28 02:22:07,942 INFO L175 Difference]: Start difference. First operand has 107 places, 119 transitions, 1294 flow. Second operand 15 states and 460 transitions. [2024-06-28 02:22:07,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 336 transitions, 3268 flow [2024-06-28 02:22:08,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 336 transitions, 3246 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:08,263 INFO L231 Difference]: Finished difference. Result has 125 places, 137 transitions, 1764 flow [2024-06-28 02:22:08,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1764, PETRI_PLACES=125, PETRI_TRANSITIONS=137} [2024-06-28 02:22:08,264 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 67 predicate places. [2024-06-28 02:22:08,264 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 137 transitions, 1764 flow [2024-06-28 02:22:08,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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) [2024-06-28 02:22:08,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:08,265 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] [2024-06-28 02:22:08,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:22:08,265 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:22:08,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:08,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1269204984, now seen corresponding path program 1 times [2024-06-28 02:22:08,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:08,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086396060] [2024-06-28 02:22:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:08,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:08,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:08,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086396060] [2024-06-28 02:22:08,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086396060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:08,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:08,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:08,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138875537] [2024-06-28 02:22:08,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:08,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:08,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:08,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:08,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:08,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-28 02:22:08,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 137 transitions, 1764 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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) [2024-06-28 02:22:08,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:08,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-28 02:22:08,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:12,273 INFO L124 PetriNetUnfolderBase]: 23800/36635 cut-off events. [2024-06-28 02:22:12,273 INFO L125 PetriNetUnfolderBase]: For 311882/312044 co-relation queries the response was YES. [2024-06-28 02:22:12,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163094 conditions, 36635 events. 23800/36635 cut-off events. For 311882/312044 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 268241 event pairs, 5439 based on Foata normal form. 392/36839 useless extension candidates. Maximal degree in co-relation 163048. Up to 16003 conditions per place. [2024-06-28 02:22:12,566 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 252 selfloop transitions, 53 changer transitions 0/315 dead transitions. [2024-06-28 02:22:12,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 315 transitions, 3658 flow [2024-06-28 02:22:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:22:12,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:22:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 377 transitions. [2024-06-28 02:22:12,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5712121212121212 [2024-06-28 02:22:12,568 INFO L175 Difference]: Start difference. First operand has 125 places, 137 transitions, 1764 flow. Second operand 12 states and 377 transitions. [2024-06-28 02:22:12,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 315 transitions, 3658 flow [2024-06-28 02:22:13,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 315 transitions, 3499 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-28 02:22:13,253 INFO L231 Difference]: Finished difference. Result has 129 places, 150 transitions, 1987 flow [2024-06-28 02:22:13,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1987, PETRI_PLACES=129, PETRI_TRANSITIONS=150} [2024-06-28 02:22:13,254 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 71 predicate places. [2024-06-28 02:22:13,254 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 150 transitions, 1987 flow [2024-06-28 02:22:13,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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) [2024-06-28 02:22:13,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:13,255 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] [2024-06-28 02:22:13,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:22:13,255 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:22:13,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:13,255 INFO L85 PathProgramCache]: Analyzing trace with hash 712447058, now seen corresponding path program 1 times [2024-06-28 02:22:13,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:13,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322553191] [2024-06-28 02:22:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:13,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:13,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:13,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322553191] [2024-06-28 02:22:13,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322553191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:13,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:13,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:13,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454023729] [2024-06-28 02:22:13,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:13,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:13,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:13,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:13,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:13,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-28 02:22:13,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 150 transitions, 1987 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2024-06-28 02:22:13,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:13,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-28 02:22:13,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:17,112 INFO L124 PetriNetUnfolderBase]: 23813/36280 cut-off events. [2024-06-28 02:22:17,112 INFO L125 PetriNetUnfolderBase]: For 354024/354164 co-relation queries the response was YES. [2024-06-28 02:22:17,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167222 conditions, 36280 events. 23813/36280 cut-off events. For 354024/354164 co-relation queries the response was YES. Maximal size of possible extension queue 1582. Compared 263197 event pairs, 3565 based on Foata normal form. 516/36528 useless extension candidates. Maximal degree in co-relation 167172. Up to 16842 conditions per place. [2024-06-28 02:22:17,467 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 173 selfloop transitions, 62 changer transitions 6/253 dead transitions. [2024-06-28 02:22:17,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 253 transitions, 3286 flow [2024-06-28 02:22:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:17,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-06-28 02:22:17,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-06-28 02:22:17,468 INFO L175 Difference]: Start difference. First operand has 129 places, 150 transitions, 1987 flow. Second operand 6 states and 213 transitions. [2024-06-28 02:22:17,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 253 transitions, 3286 flow [2024-06-28 02:22:18,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 253 transitions, 3174 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 02:22:18,520 INFO L231 Difference]: Finished difference. Result has 129 places, 156 transitions, 2245 flow [2024-06-28 02:22:18,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2245, PETRI_PLACES=129, PETRI_TRANSITIONS=156} [2024-06-28 02:22:18,521 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 71 predicate places. [2024-06-28 02:22:18,521 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 156 transitions, 2245 flow [2024-06-28 02:22:18,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2024-06-28 02:22:18,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:18,522 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] [2024-06-28 02:22:18,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:22:18,522 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:22:18,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:18,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1401074127, now seen corresponding path program 1 times [2024-06-28 02:22:18,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:18,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176104595] [2024-06-28 02:22:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:18,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:18,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:18,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176104595] [2024-06-28 02:22:18,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176104595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:18,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:18,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:18,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825521052] [2024-06-28 02:22:18,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:18,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:18,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:18,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:18,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:18,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-28 02:22:18,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 156 transitions, 2245 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2024-06-28 02:22:18,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:18,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-28 02:22:18,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:22,389 INFO L124 PetriNetUnfolderBase]: 22020/33685 cut-off events. [2024-06-28 02:22:22,389 INFO L125 PetriNetUnfolderBase]: For 368011/368301 co-relation queries the response was YES. [2024-06-28 02:22:22,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165265 conditions, 33685 events. 22020/33685 cut-off events. For 368011/368301 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 243744 event pairs, 9066 based on Foata normal form. 154/33523 useless extension candidates. Maximal degree in co-relation 165213. Up to 30502 conditions per place. [2024-06-28 02:22:22,701 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 187 selfloop transitions, 35 changer transitions 0/234 dead transitions. [2024-06-28 02:22:22,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 234 transitions, 3091 flow [2024-06-28 02:22:22,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:22,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions. [2024-06-28 02:22:22,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204545454545455 [2024-06-28 02:22:22,703 INFO L175 Difference]: Start difference. First operand has 129 places, 156 transitions, 2245 flow. Second operand 8 states and 229 transitions. [2024-06-28 02:22:22,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 234 transitions, 3091 flow [2024-06-28 02:22:23,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 234 transitions, 2907 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:23,858 INFO L231 Difference]: Finished difference. Result has 132 places, 161 transitions, 2234 flow [2024-06-28 02:22:23,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2234, PETRI_PLACES=132, PETRI_TRANSITIONS=161} [2024-06-28 02:22:23,858 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 74 predicate places. [2024-06-28 02:22:23,858 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 161 transitions, 2234 flow [2024-06-28 02:22:23,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2024-06-28 02:22:23,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:23,859 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] [2024-06-28 02:22:23,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:22:23,859 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:22:23,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:23,859 INFO L85 PathProgramCache]: Analyzing trace with hash -856519342, now seen corresponding path program 1 times [2024-06-28 02:22:23,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:23,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822866354] [2024-06-28 02:22:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:23,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:23,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:23,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822866354] [2024-06-28 02:22:23,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822866354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:23,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:23,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:23,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381240880] [2024-06-28 02:22:23,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:23,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:23,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:23,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:23,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:23,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-28 02:22:23,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 161 transitions, 2234 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2024-06-28 02:22:23,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:23,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-28 02:22:23,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand