./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.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/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.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-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.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 02:43:15,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:43:15,249 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:43:15,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:43:15,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:43:15,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:43:15,268 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:43:15,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:43:15,269 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:43:15,269 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:43:15,270 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:43:15,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:43:15,271 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:43:15,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:43:15,271 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:43:15,272 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:43:15,272 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:43:15,272 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:43:15,273 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:43:15,273 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:43:15,273 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:43:15,274 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:43:15,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:43:15,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:43:15,274 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:43:15,275 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:43:15,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:43:15,275 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:43:15,276 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:43:15,276 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:43:15,276 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:43:15,276 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:43:15,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:43:15,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:43:15,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:43:15,277 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:43:15,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:43:15,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:43:15,278 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:43:15,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:43:15,279 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:43:15,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:43:15,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:43:15,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:43:15,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:43:15,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:43:15,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:43:15,543 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:43:15,543 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:43:15,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-28 02:43:16,672 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:43:16,942 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:43:16,947 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-28 02:43:16,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c6df30f6/f6d0ce3fd0d04a54819abb093c889b44/FLAGcd6ccb0d3 [2024-06-28 02:43:16,974 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c6df30f6/f6d0ce3fd0d04a54819abb093c889b44 [2024-06-28 02:43:16,976 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:43:16,976 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:43:16,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 02:43:17,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:43:17,101 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:43:17,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:43:17,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:43:17,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:43:17,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:43:16" (1/2) ... [2024-06-28 02:43:17,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc38f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:43:17, skipping insertion in model container [2024-06-28 02:43:17,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:43:16" (1/2) ... [2024-06-28 02:43:17,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ca8e422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:43:17, skipping insertion in model container [2024-06-28 02:43:17,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:43:17" (2/2) ... [2024-06-28 02:43:17,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc38f7c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:17, skipping insertion in model container [2024-06-28 02:43:17,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:43:17" (2/2) ... [2024-06-28 02:43:17,119 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:43:17,179 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:43:17,180 INFO L97 edCorrectnessWitness]: Location invariant before [L808-L808] (((((((((! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((((((((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1))) [2024-06-28 02:43:17,180 INFO L97 edCorrectnessWitness]: Location invariant before [L803-L803] (((((((((! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((((((((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1))) [2024-06-28 02:43:17,181 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] (((((((((! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((((((((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1))) [2024-06-28 02:43:17,181 INFO L97 edCorrectnessWitness]: Location invariant before [L807-L807] (((((((((! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((((((((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1))) [2024-06-28 02:43:17,181 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:43:17,182 INFO L106 edCorrectnessWitness]: ghost_update [L801-L801] multithreaded = 1; [2024-06-28 02:43:17,227 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:43:17,538 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:43:17,546 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 02:43:17,664 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:43:17,701 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:43:17,702 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:17 WrapperNode [2024-06-28 02:43:17,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:43:17,703 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:43:17,703 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:43:17,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:43:17,710 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 02:43:17" (1/1) ... [2024-06-28 02:43:17,722 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 02:43:17" (1/1) ... [2024-06-28 02:43:17,773 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2024-06-28 02:43:17,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:43:17,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:43:17,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:43:17,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:43:17,787 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 02:43:17" (1/1) ... [2024-06-28 02:43:17,787 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 02:43:17" (1/1) ... [2024-06-28 02:43:17,804 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 02:43:17" (1/1) ... [2024-06-28 02:43:17,822 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 02:43:17,832 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 02:43:17" (1/1) ... [2024-06-28 02:43:17,832 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 02:43:17" (1/1) ... [2024-06-28 02:43:17,840 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 02:43:17" (1/1) ... [2024-06-28 02:43:17,842 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 02:43:17" (1/1) ... [2024-06-28 02:43:17,843 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 02:43:17" (1/1) ... [2024-06-28 02:43:17,844 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 02:43:17" (1/1) ... [2024-06-28 02:43:17,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:43:17,848 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:43:17,848 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:43:17,848 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:43:17,849 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 02:43:17" (1/1) ... [2024-06-28 02:43:17,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:43:17,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:43:17,881 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 02:43:17,884 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 02:43:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:43:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:43:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:43:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:43:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:43:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:43:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:43:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:43:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 02:43:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 02:43:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:43:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:43:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:43:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:43:17,913 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 02:43:18,041 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:43:18,043 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:43:18,324 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:43:18,324 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:43:18,423 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:43:18,423 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:43:18,423 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:43:18 BoogieIcfgContainer [2024-06-28 02:43:18,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:43:18,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:43:18,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:43:18,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:43:18,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:43:16" (1/4) ... [2024-06-28 02:43:18,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545b359e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:43:18, skipping insertion in model container [2024-06-28 02:43:18,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:43:17" (2/4) ... [2024-06-28 02:43:18,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545b359e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:43:18, skipping insertion in model container [2024-06-28 02:43:18,429 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 02:43:17" (3/4) ... [2024-06-28 02:43:18,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545b359e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:43:18, skipping insertion in model container [2024-06-28 02:43:18,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:43:18" (4/4) ... [2024-06-28 02:43:18,430 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-28 02:43:18,447 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:43:18,447 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 02:43:18,448 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:43:18,517 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:43:18,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 02:43:18,585 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-28 02:43:18,586 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:43:18,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:43:18,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 02:43:18,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-28 02:43:18,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:43:18,606 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;@2450fbab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:43:18,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 02:43:18,609 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:43:18,609 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:43:18,610 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:43:18,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:18,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:43:18,611 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 02:43:18,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:18,615 INFO L85 PathProgramCache]: Analyzing trace with hash 237074108, now seen corresponding path program 1 times [2024-06-28 02:43:18,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:18,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500649824] [2024-06-28 02:43:18,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:18,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:43:19,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:19,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500649824] [2024-06-28 02:43:19,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500649824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:19,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:19,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:43:19,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508064040] [2024-06-28 02:43:19,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:19,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:43:19,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:19,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:43:19,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:43:19,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-06-28 02:43:19,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:19,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:19,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-06-28 02:43:19,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:19,789 INFO L124 PetriNetUnfolderBase]: 2723/4077 cut-off events. [2024-06-28 02:43:19,789 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-06-28 02:43:19,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8077 conditions, 4077 events. 2723/4077 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 22522 event pairs, 1898 based on Foata normal form. 1/3991 useless extension candidates. Maximal degree in co-relation 8064. Up to 3813 conditions per place. [2024-06-28 02:43:19,826 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 37 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-28 02:43:19,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 215 flow [2024-06-28 02:43:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:43:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:43:19,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-06-28 02:43:19,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7124183006535948 [2024-06-28 02:43:19,840 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 109 transitions. [2024-06-28 02:43:19,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 215 flow [2024-06-28 02:43:19,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:43:19,848 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-28 02:43:19,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 02:43:19,853 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-28 02:43:19,853 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-28 02:43:19,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:19,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:19,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:19,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:43:19,855 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 02:43:19,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:19,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1772714873, now seen corresponding path program 1 times [2024-06-28 02:43:19,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:19,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461452960] [2024-06-28 02:43:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:19,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:20,197 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 02:43:20,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:20,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461452960] [2024-06-28 02:43:20,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461452960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:20,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:20,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:43:20,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262775923] [2024-06-28 02:43:20,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:20,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:43:20,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:20,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:43:20,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:43:20,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:20,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:20,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:20,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:20,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:20,833 INFO L124 PetriNetUnfolderBase]: 4389/6481 cut-off events. [2024-06-28 02:43:20,834 INFO L125 PetriNetUnfolderBase]: For 1055/1075 co-relation queries the response was YES. [2024-06-28 02:43:20,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14771 conditions, 6481 events. 4389/6481 cut-off events. For 1055/1075 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 36508 event pairs, 2308 based on Foata normal form. 10/6482 useless extension candidates. Maximal degree in co-relation 14759. Up to 6039 conditions per place. [2024-06-28 02:43:20,881 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 54 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-28 02:43:20,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 74 transitions, 338 flow [2024-06-28 02:43:20,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:43:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:43:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-06-28 02:43:20,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6813725490196079 [2024-06-28 02:43:20,889 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 139 transitions. [2024-06-28 02:43:20,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 74 transitions, 338 flow [2024-06-28 02:43:20,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:43:20,892 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 200 flow [2024-06-28 02:43:20,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-06-28 02:43:20,893 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 02:43:20,894 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 200 flow [2024-06-28 02:43:20,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:20,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:20,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:20,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:43:20,898 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 02:43:20,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:20,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1522984968, now seen corresponding path program 1 times [2024-06-28 02:43:20,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:20,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816747512] [2024-06-28 02:43:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:20,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:21,200 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 02:43:21,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:21,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816747512] [2024-06-28 02:43:21,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816747512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:21,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:21,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:43:21,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708116216] [2024-06-28 02:43:21,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:21,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:43:21,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:21,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:43:21,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:43:21,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:21,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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 02:43:21,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:21,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:21,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:21,859 INFO L124 PetriNetUnfolderBase]: 4373/6453 cut-off events. [2024-06-28 02:43:21,859 INFO L125 PetriNetUnfolderBase]: For 3044/3123 co-relation queries the response was YES. [2024-06-28 02:43:21,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16579 conditions, 6453 events. 4373/6453 cut-off events. For 3044/3123 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 36299 event pairs, 1831 based on Foata normal form. 32/6476 useless extension candidates. Maximal degree in co-relation 16564. Up to 5973 conditions per place. [2024-06-28 02:43:21,906 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 61 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2024-06-28 02:43:21,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 430 flow [2024-06-28 02:43:21,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:43:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:43:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-06-28 02:43:21,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6588235294117647 [2024-06-28 02:43:21,908 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 200 flow. Second operand 5 states and 168 transitions. [2024-06-28 02:43:21,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 430 flow [2024-06-28 02:43:21,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 426 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 02:43:21,912 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 246 flow [2024-06-28 02:43:21,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-28 02:43:21,913 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-28 02:43:21,913 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 246 flow [2024-06-28 02:43:21,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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 02:43:21,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:21,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:21,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:43:21,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:21,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1039655761, now seen corresponding path program 1 times [2024-06-28 02:43:21,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:21,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431361053] [2024-06-28 02:43:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:21,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:22,151 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 02:43:22,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:22,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431361053] [2024-06-28 02:43:22,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431361053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:22,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:22,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:43:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958709502] [2024-06-28 02:43:22,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:22,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:43:22,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:43:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:43:22,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:22,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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 02:43:22,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:22,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:22,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:22,893 INFO L124 PetriNetUnfolderBase]: 4310/6334 cut-off events. [2024-06-28 02:43:22,894 INFO L125 PetriNetUnfolderBase]: For 5513/5523 co-relation queries the response was YES. [2024-06-28 02:43:22,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17797 conditions, 6334 events. 4310/6334 cut-off events. For 5513/5523 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 36114 event pairs, 2266 based on Foata normal form. 6/6330 useless extension candidates. Maximal degree in co-relation 17779. Up to 5934 conditions per place. [2024-06-28 02:43:22,936 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 61 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2024-06-28 02:43:22,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 83 transitions, 494 flow [2024-06-28 02:43:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:43:22,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:43:22,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-06-28 02:43:22,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-06-28 02:43:22,939 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 246 flow. Second operand 4 states and 134 transitions. [2024-06-28 02:43:22,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 83 transitions, 494 flow [2024-06-28 02:43:22,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 83 transitions, 458 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:43:22,944 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 323 flow [2024-06-28 02:43:22,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-28 02:43:22,945 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-28 02:43:22,945 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 323 flow [2024-06-28 02:43:22,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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 02:43:22,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:22,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:22,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:43:22,946 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 02:43:22,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:22,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1795643978, now seen corresponding path program 1 times [2024-06-28 02:43:22,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:22,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447731789] [2024-06-28 02:43:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:22,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:23,242 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 02:43:23,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:23,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447731789] [2024-06-28 02:43:23,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447731789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:23,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:23,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:43:23,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960718] [2024-06-28 02:43:23,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:23,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:43:23,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:23,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:43:23,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:43:23,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:23,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 323 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:43:23,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:23,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:23,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:24,065 INFO L124 PetriNetUnfolderBase]: 5207/7676 cut-off events. [2024-06-28 02:43:24,065 INFO L125 PetriNetUnfolderBase]: For 11019/11281 co-relation queries the response was YES. [2024-06-28 02:43:24,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23680 conditions, 7676 events. 5207/7676 cut-off events. For 11019/11281 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 44169 event pairs, 2250 based on Foata normal form. 57/7678 useless extension candidates. Maximal degree in co-relation 23660. Up to 7050 conditions per place. [2024-06-28 02:43:24,109 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 66 selfloop transitions, 25 changer transitions 0/104 dead transitions. [2024-06-28 02:43:24,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 104 transitions, 659 flow [2024-06-28 02:43:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:43:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:43:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 172 transitions. [2024-06-28 02:43:24,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6745098039215687 [2024-06-28 02:43:24,112 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 323 flow. Second operand 5 states and 172 transitions. [2024-06-28 02:43:24,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 104 transitions, 659 flow [2024-06-28 02:43:24,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 104 transitions, 651 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 02:43:24,123 INFO L231 Difference]: Finished difference. Result has 68 places, 73 transitions, 436 flow [2024-06-28 02:43:24,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=68, PETRI_TRANSITIONS=73} [2024-06-28 02:43:24,124 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 02:43:24,124 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 73 transitions, 436 flow [2024-06-28 02:43:24,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:43:24,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:24,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:24,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:43:24,125 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 02:43:24,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:24,126 INFO L85 PathProgramCache]: Analyzing trace with hash 738796918, now seen corresponding path program 2 times [2024-06-28 02:43:24,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:24,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149733851] [2024-06-28 02:43:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:24,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:24,383 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 02:43:24,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:24,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149733851] [2024-06-28 02:43:24,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149733851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:24,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:24,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:43:24,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37547806] [2024-06-28 02:43:24,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:24,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:43:24,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:24,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:43:24,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:43:24,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:24,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 436 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:43:24,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:24,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:24,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:25,211 INFO L124 PetriNetUnfolderBase]: 5198/7664 cut-off events. [2024-06-28 02:43:25,211 INFO L125 PetriNetUnfolderBase]: For 17217/17499 co-relation queries the response was YES. [2024-06-28 02:43:25,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26018 conditions, 7664 events. 5198/7664 cut-off events. For 17217/17499 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 44083 event pairs, 2250 based on Foata normal form. 65/7676 useless extension candidates. Maximal degree in co-relation 25995. Up to 7056 conditions per place. [2024-06-28 02:43:25,375 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 60 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2024-06-28 02:43:25,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 94 transitions, 652 flow [2024-06-28 02:43:25,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:43:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:43:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-06-28 02:43:25,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6813725490196079 [2024-06-28 02:43:25,381 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 436 flow. Second operand 4 states and 139 transitions. [2024-06-28 02:43:25,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 94 transitions, 652 flow [2024-06-28 02:43:25,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 94 transitions, 609 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-28 02:43:25,398 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 453 flow [2024-06-28 02:43:25,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=453, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-28 02:43:25,399 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-28 02:43:25,399 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 453 flow [2024-06-28 02:43:25,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:43:25,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:25,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:25,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:43:25,399 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 02:43:25,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:25,400 INFO L85 PathProgramCache]: Analyzing trace with hash 458586734, now seen corresponding path program 1 times [2024-06-28 02:43:25,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:25,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403094095] [2024-06-28 02:43:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:25,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:25,681 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 02:43:25,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:25,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403094095] [2024-06-28 02:43:25,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403094095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:25,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:25,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:43:25,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823848399] [2024-06-28 02:43:25,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:25,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:43:25,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:25,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:43:25,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:43:25,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:25,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:43:25,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:25,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:25,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:26,383 INFO L124 PetriNetUnfolderBase]: 4317/6352 cut-off events. [2024-06-28 02:43:26,383 INFO L125 PetriNetUnfolderBase]: For 15952/15988 co-relation queries the response was YES. [2024-06-28 02:43:26,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22022 conditions, 6352 events. 4317/6352 cut-off events. For 15952/15988 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 36240 event pairs, 2074 based on Foata normal form. 19/6359 useless extension candidates. Maximal degree in co-relation 21997. Up to 5913 conditions per place. [2024-06-28 02:43:26,428 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 77 selfloop transitions, 14 changer transitions 0/102 dead transitions. [2024-06-28 02:43:26,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 102 transitions, 726 flow [2024-06-28 02:43:26,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:43:26,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:43:26,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-06-28 02:43:26,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6431372549019608 [2024-06-28 02:43:26,430 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 453 flow. Second operand 5 states and 164 transitions. [2024-06-28 02:43:26,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 102 transitions, 726 flow [2024-06-28 02:43:26,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 102 transitions, 684 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:43:26,444 INFO L231 Difference]: Finished difference. Result has 73 places, 76 transitions, 477 flow [2024-06-28 02:43:26,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=477, PETRI_PLACES=73, PETRI_TRANSITIONS=76} [2024-06-28 02:43:26,446 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-28 02:43:26,446 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 76 transitions, 477 flow [2024-06-28 02:43:26,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:43:26,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:26,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:26,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:43:26,447 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 02:43:26,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1080064308, now seen corresponding path program 1 times [2024-06-28 02:43:26,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:26,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111345260] [2024-06-28 02:43:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:26,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:26,762 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 02:43:26,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:26,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111345260] [2024-06-28 02:43:26,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111345260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:26,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:26,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:43:26,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435265231] [2024-06-28 02:43:26,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:26,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:43:26,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:43:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:43:26,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:43:26,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 477 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 02:43:26,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:26,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:43:26,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:27,649 INFO L124 PetriNetUnfolderBase]: 5487/8007 cut-off events. [2024-06-28 02:43:27,649 INFO L125 PetriNetUnfolderBase]: For 24555/24726 co-relation queries the response was YES. [2024-06-28 02:43:27,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28817 conditions, 8007 events. 5487/8007 cut-off events. For 24555/24726 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 45383 event pairs, 2351 based on Foata normal form. 40/8023 useless extension candidates. Maximal degree in co-relation 28791. Up to 7366 conditions per place. [2024-06-28 02:43:27,696 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 96 selfloop transitions, 27 changer transitions 0/133 dead transitions. [2024-06-28 02:43:27,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 133 transitions, 993 flow [2024-06-28 02:43:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:43:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:43:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-06-28 02:43:27,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6503267973856209 [2024-06-28 02:43:27,698 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 477 flow. Second operand 6 states and 199 transitions. [2024-06-28 02:43:27,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 133 transitions, 993 flow [2024-06-28 02:43:27,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 133 transitions, 953 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 02:43:27,718 INFO L231 Difference]: Finished difference. Result has 78 places, 93 transitions, 665 flow [2024-06-28 02:43:27,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=665, PETRI_PLACES=78, PETRI_TRANSITIONS=93} [2024-06-28 02:43:27,721 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-06-28 02:43:27,721 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 93 transitions, 665 flow [2024-06-28 02:43:27,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 02:43:27,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:27,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:27,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:43:27,722 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 02:43:27,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:27,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1427875008, now seen corresponding path program 2 times [2024-06-28 02:43:27,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:27,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039988939] [2024-06-28 02:43:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:27,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:27,946 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 02:43:27,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:27,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039988939] [2024-06-28 02:43:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039988939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:27,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:27,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:43:27,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022661426] [2024-06-28 02:43:27,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:27,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:43:27,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:27,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:43:27,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:43:28,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:43:28,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 93 transitions, 665 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 02:43:28,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:28,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:43:28,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:28,847 INFO L124 PetriNetUnfolderBase]: 5509/8053 cut-off events. [2024-06-28 02:43:28,847 INFO L125 PetriNetUnfolderBase]: For 32033/32350 co-relation queries the response was YES. [2024-06-28 02:43:28,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31088 conditions, 8053 events. 5509/8053 cut-off events. For 32033/32350 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 45641 event pairs, 2329 based on Foata normal form. 81/8117 useless extension candidates. Maximal degree in co-relation 31059. Up to 7419 conditions per place. [2024-06-28 02:43:28,894 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 110 selfloop transitions, 26 changer transitions 0/146 dead transitions. [2024-06-28 02:43:28,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 146 transitions, 1162 flow [2024-06-28 02:43:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:43:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:43:28,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-06-28 02:43:28,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6358543417366946 [2024-06-28 02:43:28,895 INFO L175 Difference]: Start difference. First operand has 78 places, 93 transitions, 665 flow. Second operand 7 states and 227 transitions. [2024-06-28 02:43:28,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 146 transitions, 1162 flow [2024-06-28 02:43:28,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 146 transitions, 1108 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 02:43:28,921 INFO L231 Difference]: Finished difference. Result has 84 places, 99 transitions, 741 flow [2024-06-28 02:43:28,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=741, PETRI_PLACES=84, PETRI_TRANSITIONS=99} [2024-06-28 02:43:28,922 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2024-06-28 02:43:28,922 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 99 transitions, 741 flow [2024-06-28 02:43:28,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 02:43:28,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:28,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:28,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:43:28,923 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:28,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:28,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1427869428, now seen corresponding path program 3 times [2024-06-28 02:43:28,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:28,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880374475] [2024-06-28 02:43:28,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:28,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:29,153 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 02:43:29,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:29,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880374475] [2024-06-28 02:43:29,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880374475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:29,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:29,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:43:29,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525812823] [2024-06-28 02:43:29,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:29,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:43:29,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:29,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:43:29,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:43:29,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:43:29,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 99 transitions, 741 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 02:43:29,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:29,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:43:29,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:29,988 INFO L124 PetriNetUnfolderBase]: 5500/8033 cut-off events. [2024-06-28 02:43:29,988 INFO L125 PetriNetUnfolderBase]: For 36437/36676 co-relation queries the response was YES. [2024-06-28 02:43:30,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31393 conditions, 8033 events. 5500/8033 cut-off events. For 36437/36676 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 45539 event pairs, 2351 based on Foata normal form. 65/8074 useless extension candidates. Maximal degree in co-relation 31362. Up to 7410 conditions per place. [2024-06-28 02:43:30,042 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 93 selfloop transitions, 25 changer transitions 0/128 dead transitions. [2024-06-28 02:43:30,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 128 transitions, 1054 flow [2024-06-28 02:43:30,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:43:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:43:30,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-06-28 02:43:30,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6549019607843137 [2024-06-28 02:43:30,044 INFO L175 Difference]: Start difference. First operand has 84 places, 99 transitions, 741 flow. Second operand 5 states and 167 transitions. [2024-06-28 02:43:30,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 128 transitions, 1054 flow [2024-06-28 02:43:30,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 128 transitions, 962 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 02:43:30,096 INFO L231 Difference]: Finished difference. Result has 85 places, 99 transitions, 710 flow [2024-06-28 02:43:30,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=710, PETRI_PLACES=85, PETRI_TRANSITIONS=99} [2024-06-28 02:43:30,098 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-28 02:43:30,101 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 99 transitions, 710 flow [2024-06-28 02:43:30,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 02:43:30,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:30,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:30,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:43:30,102 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:30,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:30,102 INFO L85 PathProgramCache]: Analyzing trace with hash -763144331, now seen corresponding path program 1 times [2024-06-28 02:43:30,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:30,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830526310] [2024-06-28 02:43:30,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:30,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:30,467 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 02:43:30,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:30,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830526310] [2024-06-28 02:43:30,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830526310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:30,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:30,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:43:30,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978217039] [2024-06-28 02:43:30,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:30,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:43:30,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:30,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:43:30,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:43:30,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:30,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 99 transitions, 710 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 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 02:43:30,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:30,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:30,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:31,212 INFO L124 PetriNetUnfolderBase]: 4998/7361 cut-off events. [2024-06-28 02:43:31,212 INFO L125 PetriNetUnfolderBase]: For 40862/40885 co-relation queries the response was YES. [2024-06-28 02:43:31,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29608 conditions, 7361 events. 4998/7361 cut-off events. For 40862/40885 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 42808 event pairs, 2470 based on Foata normal form. 27/7357 useless extension candidates. Maximal degree in co-relation 29576. Up to 6752 conditions per place. [2024-06-28 02:43:31,251 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 98 selfloop transitions, 14 changer transitions 0/127 dead transitions. [2024-06-28 02:43:31,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 1082 flow [2024-06-28 02:43:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:43:31,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:43:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-06-28 02:43:31,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6372549019607843 [2024-06-28 02:43:31,252 INFO L175 Difference]: Start difference. First operand has 85 places, 99 transitions, 710 flow. Second operand 4 states and 130 transitions. [2024-06-28 02:43:31,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 1082 flow [2024-06-28 02:43:31,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 127 transitions, 1026 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:43:31,298 INFO L231 Difference]: Finished difference. Result has 86 places, 112 transitions, 833 flow [2024-06-28 02:43:31,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=833, PETRI_PLACES=86, PETRI_TRANSITIONS=112} [2024-06-28 02:43:31,298 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-28 02:43:31,298 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 112 transitions, 833 flow [2024-06-28 02:43:31,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 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 02:43:31,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:31,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:31,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:43:31,299 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 02:43:31,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:31,299 INFO L85 PathProgramCache]: Analyzing trace with hash 960174645, now seen corresponding path program 1 times [2024-06-28 02:43:31,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:31,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015249674] [2024-06-28 02:43:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:31,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:31,533 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 02:43:31,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:31,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015249674] [2024-06-28 02:43:31,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015249674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:31,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:31,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:43:31,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929822247] [2024-06-28 02:43:31,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:31,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:43:31,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:31,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:43:31,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:43:31,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:31,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 112 transitions, 833 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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 02:43:31,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:31,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:31,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:32,370 INFO L124 PetriNetUnfolderBase]: 6095/8923 cut-off events. [2024-06-28 02:43:32,371 INFO L125 PetriNetUnfolderBase]: For 64984/65217 co-relation queries the response was YES. [2024-06-28 02:43:32,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39578 conditions, 8923 events. 6095/8923 cut-off events. For 64984/65217 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 52107 event pairs, 1804 based on Foata normal form. 62/8746 useless extension candidates. Maximal degree in co-relation 39544. Up to 7908 conditions per place. [2024-06-28 02:43:32,429 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 88 selfloop transitions, 49 changer transitions 0/158 dead transitions. [2024-06-28 02:43:32,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 158 transitions, 1339 flow [2024-06-28 02:43:32,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:43:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:43:32,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-06-28 02:43:32,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6633986928104575 [2024-06-28 02:43:32,433 INFO L175 Difference]: Start difference. First operand has 86 places, 112 transitions, 833 flow. Second operand 6 states and 203 transitions. [2024-06-28 02:43:32,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 158 transitions, 1339 flow [2024-06-28 02:43:32,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 158 transitions, 1329 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 02:43:32,516 INFO L231 Difference]: Finished difference. Result has 92 places, 118 transitions, 1005 flow [2024-06-28 02:43:32,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1005, PETRI_PLACES=92, PETRI_TRANSITIONS=118} [2024-06-28 02:43:32,517 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-28 02:43:32,517 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 118 transitions, 1005 flow [2024-06-28 02:43:32,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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 02:43:32,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:32,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:32,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:43:32,518 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 02:43:32,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:32,518 INFO L85 PathProgramCache]: Analyzing trace with hash -877748299, now seen corresponding path program 2 times [2024-06-28 02:43:32,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:32,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899245385] [2024-06-28 02:43:32,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:32,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:32,764 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 02:43:32,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:32,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899245385] [2024-06-28 02:43:32,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899245385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:32,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:32,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:43:32,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076529325] [2024-06-28 02:43:32,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:32,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:43:32,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:32,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:43:32,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:43:32,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:32,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 118 transitions, 1005 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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 02:43:32,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:32,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:32,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:33,565 INFO L124 PetriNetUnfolderBase]: 6167/9016 cut-off events. [2024-06-28 02:43:33,565 INFO L125 PetriNetUnfolderBase]: For 82163/82469 co-relation queries the response was YES. [2024-06-28 02:43:33,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42538 conditions, 9016 events. 6167/9016 cut-off events. For 82163/82469 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 52672 event pairs, 2204 based on Foata normal form. 75/8849 useless extension candidates. Maximal degree in co-relation 42501. Up to 8137 conditions per place. [2024-06-28 02:43:33,616 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 91 selfloop transitions, 45 changer transitions 0/157 dead transitions. [2024-06-28 02:43:33,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 157 transitions, 1409 flow [2024-06-28 02:43:33,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:43:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:43:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-06-28 02:43:33,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6503267973856209 [2024-06-28 02:43:33,617 INFO L175 Difference]: Start difference. First operand has 92 places, 118 transitions, 1005 flow. Second operand 6 states and 199 transitions. [2024-06-28 02:43:33,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 157 transitions, 1409 flow [2024-06-28 02:43:33,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 157 transitions, 1325 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 02:43:33,683 INFO L231 Difference]: Finished difference. Result has 96 places, 121 transitions, 1068 flow [2024-06-28 02:43:33,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1068, PETRI_PLACES=96, PETRI_TRANSITIONS=121} [2024-06-28 02:43:33,683 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-28 02:43:33,684 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 121 transitions, 1068 flow [2024-06-28 02:43:33,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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 02:43:33,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:33,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:33,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:43:33,684 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:33,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1314275829, now seen corresponding path program 3 times [2024-06-28 02:43:33,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:33,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129861695] [2024-06-28 02:43:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:33,901 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 02:43:33,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:33,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129861695] [2024-06-28 02:43:33,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129861695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:33,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:33,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:43:33,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478173422] [2024-06-28 02:43:33,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:33,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:43:33,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:33,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:43:33,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:43:34,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:34,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 121 transitions, 1068 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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 02:43:34,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:34,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:34,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:34,952 INFO L124 PetriNetUnfolderBase]: 6133/8979 cut-off events. [2024-06-28 02:43:34,952 INFO L125 PetriNetUnfolderBase]: For 89869/90141 co-relation queries the response was YES. [2024-06-28 02:43:34,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42958 conditions, 8979 events. 6133/8979 cut-off events. For 89869/90141 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 52379 event pairs, 1794 based on Foata normal form. 108/8850 useless extension candidates. Maximal degree in co-relation 42919. Up to 8052 conditions per place. [2024-06-28 02:43:35,025 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 88 selfloop transitions, 41 changer transitions 0/150 dead transitions. [2024-06-28 02:43:35,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 150 transitions, 1400 flow [2024-06-28 02:43:35,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:43:35,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:43:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-06-28 02:43:35,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 02:43:35,026 INFO L175 Difference]: Start difference. First operand has 96 places, 121 transitions, 1068 flow. Second operand 5 states and 170 transitions. [2024-06-28 02:43:35,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 150 transitions, 1400 flow [2024-06-28 02:43:35,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 150 transitions, 1283 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 02:43:35,120 INFO L231 Difference]: Finished difference. Result has 97 places, 121 transitions, 1049 flow [2024-06-28 02:43:35,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1049, PETRI_PLACES=97, PETRI_TRANSITIONS=121} [2024-06-28 02:43:35,120 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-28 02:43:35,121 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 121 transitions, 1049 flow [2024-06-28 02:43:35,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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 02:43:35,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:35,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:35,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:43:35,121 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:35,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:35,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1528957803, now seen corresponding path program 1 times [2024-06-28 02:43:35,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:35,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122256079] [2024-06-28 02:43:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:35,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:35,366 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 02:43:35,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:35,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122256079] [2024-06-28 02:43:35,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122256079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:35,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:35,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:43:35,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620403434] [2024-06-28 02:43:35,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:35,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:43:35,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:35,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:43:35,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:43:35,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:43:35,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 121 transitions, 1049 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:35,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:35,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:43:35,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:36,358 INFO L124 PetriNetUnfolderBase]: 6715/9772 cut-off events. [2024-06-28 02:43:36,358 INFO L125 PetriNetUnfolderBase]: For 94949/95245 co-relation queries the response was YES. [2024-06-28 02:43:36,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45970 conditions, 9772 events. 6715/9772 cut-off events. For 94949/95245 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 56618 event pairs, 1908 based on Foata normal form. 117/9841 useless extension candidates. Maximal degree in co-relation 45930. Up to 8482 conditions per place. [2024-06-28 02:43:36,432 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 133 selfloop transitions, 43 changer transitions 0/188 dead transitions. [2024-06-28 02:43:36,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 188 transitions, 1759 flow [2024-06-28 02:43:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:43:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:43:36,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-06-28 02:43:36,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6526610644257703 [2024-06-28 02:43:36,434 INFO L175 Difference]: Start difference. First operand has 97 places, 121 transitions, 1049 flow. Second operand 7 states and 233 transitions. [2024-06-28 02:43:36,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 188 transitions, 1759 flow [2024-06-28 02:43:36,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 188 transitions, 1652 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 02:43:36,533 INFO L231 Difference]: Finished difference. Result has 102 places, 132 transitions, 1189 flow [2024-06-28 02:43:36,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1189, PETRI_PLACES=102, PETRI_TRANSITIONS=132} [2024-06-28 02:43:36,534 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-28 02:43:36,534 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 132 transitions, 1189 flow [2024-06-28 02:43:36,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:36,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:36,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:36,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:43:36,535 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:36,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:36,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1440392043, now seen corresponding path program 2 times [2024-06-28 02:43:36,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:36,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236586507] [2024-06-28 02:43:36,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:36,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:36,775 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 02:43:36,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:36,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236586507] [2024-06-28 02:43:36,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236586507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:36,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:36,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:43:36,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989404934] [2024-06-28 02:43:36,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:36,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:43:36,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:36,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:43:36,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:43:36,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:43:36,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 132 transitions, 1189 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:36,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:36,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:43:36,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:37,893 INFO L124 PetriNetUnfolderBase]: 6989/10198 cut-off events. [2024-06-28 02:43:37,894 INFO L125 PetriNetUnfolderBase]: For 112749/113103 co-relation queries the response was YES. [2024-06-28 02:43:37,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49943 conditions, 10198 events. 6989/10198 cut-off events. For 112749/113103 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 59767 event pairs, 2353 based on Foata normal form. 127/10277 useless extension candidates. Maximal degree in co-relation 49900. Up to 9096 conditions per place. [2024-06-28 02:43:37,985 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 139 selfloop transitions, 39 changer transitions 0/190 dead transitions. [2024-06-28 02:43:37,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 190 transitions, 1845 flow [2024-06-28 02:43:37,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:43:37,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:43:37,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-06-28 02:43:37,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6526610644257703 [2024-06-28 02:43:37,986 INFO L175 Difference]: Start difference. First operand has 102 places, 132 transitions, 1189 flow. Second operand 7 states and 233 transitions. [2024-06-28 02:43:37,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 190 transitions, 1845 flow [2024-06-28 02:43:38,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 190 transitions, 1786 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 02:43:38,096 INFO L231 Difference]: Finished difference. Result has 108 places, 137 transitions, 1295 flow [2024-06-28 02:43:38,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1295, PETRI_PLACES=108, PETRI_TRANSITIONS=137} [2024-06-28 02:43:38,096 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2024-06-28 02:43:38,097 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 137 transitions, 1295 flow [2024-06-28 02:43:38,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:38,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:38,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:38,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:43:38,097 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:38,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:38,098 INFO L85 PathProgramCache]: Analyzing trace with hash -625968093, now seen corresponding path program 3 times [2024-06-28 02:43:38,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:38,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432156380] [2024-06-28 02:43:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:38,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:38,353 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 02:43:38,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:38,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432156380] [2024-06-28 02:43:38,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432156380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:38,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:38,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:43:38,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459023658] [2024-06-28 02:43:38,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:38,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:43:38,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:38,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:43:38,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:43:38,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:43:38,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 137 transitions, 1295 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:38,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:38,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:43:38,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:39,430 INFO L124 PetriNetUnfolderBase]: 6935/10120 cut-off events. [2024-06-28 02:43:39,430 INFO L125 PetriNetUnfolderBase]: For 122442/122792 co-relation queries the response was YES. [2024-06-28 02:43:39,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50414 conditions, 10120 events. 6935/10120 cut-off events. For 122442/122792 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 59132 event pairs, 2358 based on Foata normal form. 133/10205 useless extension candidates. Maximal degree in co-relation 50368. Up to 9216 conditions per place. [2024-06-28 02:43:39,517 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 137 selfloop transitions, 36 changer transitions 0/185 dead transitions. [2024-06-28 02:43:39,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 185 transitions, 1784 flow [2024-06-28 02:43:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:43:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:43:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-06-28 02:43:39,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6358543417366946 [2024-06-28 02:43:39,518 INFO L175 Difference]: Start difference. First operand has 108 places, 137 transitions, 1295 flow. Second operand 7 states and 227 transitions. [2024-06-28 02:43:39,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 185 transitions, 1784 flow [2024-06-28 02:43:39,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 185 transitions, 1715 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 02:43:39,680 INFO L231 Difference]: Finished difference. Result has 112 places, 138 transitions, 1322 flow [2024-06-28 02:43:39,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1322, PETRI_PLACES=112, PETRI_TRANSITIONS=138} [2024-06-28 02:43:39,680 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-28 02:43:39,681 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 138 transitions, 1322 flow [2024-06-28 02:43:39,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:39,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:39,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:39,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:43:39,681 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:39,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2093356735, now seen corresponding path program 4 times [2024-06-28 02:43:39,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:39,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611531641] [2024-06-28 02:43:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:39,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:39,918 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 02:43:39,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:39,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611531641] [2024-06-28 02:43:39,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611531641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:39,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:39,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:43:39,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087315882] [2024-06-28 02:43:39,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:39,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:43:39,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:39,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:43:39,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:43:40,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:43:40,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 138 transitions, 1322 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:40,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:40,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:43:40,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:40,930 INFO L124 PetriNetUnfolderBase]: 6968/10191 cut-off events. [2024-06-28 02:43:40,930 INFO L125 PetriNetUnfolderBase]: For 131117/131479 co-relation queries the response was YES. [2024-06-28 02:43:40,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51080 conditions, 10191 events. 6968/10191 cut-off events. For 131117/131479 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 59612 event pairs, 2338 based on Foata normal form. 142/10295 useless extension candidates. Maximal degree in co-relation 51032. Up to 9310 conditions per place. [2024-06-28 02:43:41,034 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 152 selfloop transitions, 31 changer transitions 0/195 dead transitions. [2024-06-28 02:43:41,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 195 transitions, 1873 flow [2024-06-28 02:43:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:43:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:43:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-06-28 02:43:41,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 02:43:41,036 INFO L175 Difference]: Start difference. First operand has 112 places, 138 transitions, 1322 flow. Second operand 8 states and 255 transitions. [2024-06-28 02:43:41,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 195 transitions, 1873 flow [2024-06-28 02:43:41,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 195 transitions, 1801 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 02:43:41,193 INFO L231 Difference]: Finished difference. Result has 115 places, 140 transitions, 1360 flow [2024-06-28 02:43:41,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1360, PETRI_PLACES=115, PETRI_TRANSITIONS=140} [2024-06-28 02:43:41,194 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-28 02:43:41,194 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 140 transitions, 1360 flow [2024-06-28 02:43:41,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:41,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:41,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:41,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:43:41,195 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:41,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:41,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2087850205, now seen corresponding path program 5 times [2024-06-28 02:43:41,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:41,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233026299] [2024-06-28 02:43:41,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:41,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:41,446 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 02:43:41,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:41,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233026299] [2024-06-28 02:43:41,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233026299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:41,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:41,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:43:41,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791169140] [2024-06-28 02:43:41,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:41,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:43:41,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:41,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:43:41,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:43:41,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:43:41,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 140 transitions, 1360 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:41,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:41,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:43:41,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:42,621 INFO L124 PetriNetUnfolderBase]: 7114/10415 cut-off events. [2024-06-28 02:43:42,622 INFO L125 PetriNetUnfolderBase]: For 145226/145580 co-relation queries the response was YES. [2024-06-28 02:43:42,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53030 conditions, 10415 events. 7114/10415 cut-off events. For 145226/145580 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 61253 event pairs, 2394 based on Foata normal form. 127/10496 useless extension candidates. Maximal degree in co-relation 52981. Up to 9523 conditions per place. [2024-06-28 02:43:42,803 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 141 selfloop transitions, 29 changer transitions 0/182 dead transitions. [2024-06-28 02:43:42,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 182 transitions, 1851 flow [2024-06-28 02:43:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:43:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:43:42,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-06-28 02:43:42,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-06-28 02:43:42,805 INFO L175 Difference]: Start difference. First operand has 115 places, 140 transitions, 1360 flow. Second operand 6 states and 198 transitions. [2024-06-28 02:43:42,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 182 transitions, 1851 flow [2024-06-28 02:43:42,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 182 transitions, 1779 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 02:43:42,997 INFO L231 Difference]: Finished difference. Result has 115 places, 142 transitions, 1398 flow [2024-06-28 02:43:42,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1398, PETRI_PLACES=115, PETRI_TRANSITIONS=142} [2024-06-28 02:43:42,997 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-28 02:43:42,998 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 142 transitions, 1398 flow [2024-06-28 02:43:42,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:42,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:42,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:42,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:43:42,998 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:42,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:42,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2087846485, now seen corresponding path program 6 times [2024-06-28 02:43:42,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:42,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818971722] [2024-06-28 02:43:42,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:42,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:43,241 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 02:43:43,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:43,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818971722] [2024-06-28 02:43:43,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818971722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:43,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:43,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:43:43,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359696581] [2024-06-28 02:43:43,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:43,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:43:43,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:43,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:43:43,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:43:43,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:43:43,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 142 transitions, 1398 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:43,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:43,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:43:43,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:44,478 INFO L124 PetriNetUnfolderBase]: 7075/10354 cut-off events. [2024-06-28 02:43:44,478 INFO L125 PetriNetUnfolderBase]: For 152801/153157 co-relation queries the response was YES. [2024-06-28 02:43:44,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52976 conditions, 10354 events. 7075/10354 cut-off events. For 152801/153157 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 60771 event pairs, 1958 based on Foata normal form. 141/10449 useless extension candidates. Maximal degree in co-relation 52926. Up to 9116 conditions per place. [2024-06-28 02:43:44,574 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 138 selfloop transitions, 37 changer transitions 0/187 dead transitions. [2024-06-28 02:43:44,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 187 transitions, 1891 flow [2024-06-28 02:43:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:43:44,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:43:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-06-28 02:43:44,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-06-28 02:43:44,575 INFO L175 Difference]: Start difference. First operand has 115 places, 142 transitions, 1398 flow. Second operand 6 states and 201 transitions. [2024-06-28 02:43:44,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 187 transitions, 1891 flow [2024-06-28 02:43:44,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 187 transitions, 1809 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 02:43:44,783 INFO L231 Difference]: Finished difference. Result has 118 places, 144 transitions, 1436 flow [2024-06-28 02:43:44,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1436, PETRI_PLACES=118, PETRI_TRANSITIONS=144} [2024-06-28 02:43:44,784 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-28 02:43:44,784 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 144 transitions, 1436 flow [2024-06-28 02:43:44,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:44,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:44,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:44,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:43:44,784 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:44,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:44,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2093571937, now seen corresponding path program 1 times [2024-06-28 02:43:44,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:44,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893215701] [2024-06-28 02:43:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:44,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:45,054 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 02:43:45,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:45,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893215701] [2024-06-28 02:43:45,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893215701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:45,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:45,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:43:45,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893771878] [2024-06-28 02:43:45,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:45,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:43:45,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:45,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:43:45,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:43:45,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:43:45,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 144 transitions, 1436 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:45,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:45,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:43:45,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:46,407 INFO L124 PetriNetUnfolderBase]: 6967/10208 cut-off events. [2024-06-28 02:43:46,407 INFO L125 PetriNetUnfolderBase]: For 159710/160054 co-relation queries the response was YES. [2024-06-28 02:43:46,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52527 conditions, 10208 events. 6967/10208 cut-off events. For 159710/160054 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 59815 event pairs, 2179 based on Foata normal form. 144/10314 useless extension candidates. Maximal degree in co-relation 52475. Up to 8973 conditions per place. [2024-06-28 02:43:46,500 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 154 selfloop transitions, 38 changer transitions 0/204 dead transitions. [2024-06-28 02:43:46,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 204 transitions, 1973 flow [2024-06-28 02:43:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:43:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:43:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 257 transitions. [2024-06-28 02:43:46,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6299019607843137 [2024-06-28 02:43:46,503 INFO L175 Difference]: Start difference. First operand has 118 places, 144 transitions, 1436 flow. Second operand 8 states and 257 transitions. [2024-06-28 02:43:46,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 204 transitions, 1973 flow [2024-06-28 02:43:46,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 204 transitions, 1838 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:43:46,753 INFO L231 Difference]: Finished difference. Result has 120 places, 145 transitions, 1376 flow [2024-06-28 02:43:46,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1376, PETRI_PLACES=120, PETRI_TRANSITIONS=145} [2024-06-28 02:43:46,754 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-06-28 02:43:46,754 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 145 transitions, 1376 flow [2024-06-28 02:43:46,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 02:43:46,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:46,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:46,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:43:46,755 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:46,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:46,755 INFO L85 PathProgramCache]: Analyzing trace with hash -211475054, now seen corresponding path program 1 times [2024-06-28 02:43:46,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:46,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121905073] [2024-06-28 02:43:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:46,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:46,949 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 02:43:46,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:46,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121905073] [2024-06-28 02:43:46,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121905073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:46,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:46,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:43:46,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152977295] [2024-06-28 02:43:46,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:46,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:43:46,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:46,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:43:46,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:43:47,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:47,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 145 transitions, 1376 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 02:43:47,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:47,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:47,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:47,751 INFO L124 PetriNetUnfolderBase]: 5676/8388 cut-off events. [2024-06-28 02:43:47,751 INFO L125 PetriNetUnfolderBase]: For 138569/138811 co-relation queries the response was YES. [2024-06-28 02:43:47,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44550 conditions, 8388 events. 5676/8388 cut-off events. For 138569/138811 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 49270 event pairs, 2029 based on Foata normal form. 32/8394 useless extension candidates. Maximal degree in co-relation 44498. Up to 7824 conditions per place. [2024-06-28 02:43:48,003 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 130 selfloop transitions, 33 changer transitions 0/176 dead transitions. [2024-06-28 02:43:48,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 176 transitions, 1944 flow [2024-06-28 02:43:48,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:43:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:43:48,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-06-28 02:43:48,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6392156862745098 [2024-06-28 02:43:48,005 INFO L175 Difference]: Start difference. First operand has 120 places, 145 transitions, 1376 flow. Second operand 5 states and 163 transitions. [2024-06-28 02:43:48,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 176 transitions, 1944 flow [2024-06-28 02:43:48,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 176 transitions, 1855 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:43:48,114 INFO L231 Difference]: Finished difference. Result has 119 places, 153 transitions, 1470 flow [2024-06-28 02:43:48,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1470, PETRI_PLACES=119, PETRI_TRANSITIONS=153} [2024-06-28 02:43:48,115 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-06-28 02:43:48,115 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 153 transitions, 1470 flow [2024-06-28 02:43:48,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 02:43:48,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:48,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:48,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:43:48,115 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:48,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash -210490184, now seen corresponding path program 2 times [2024-06-28 02:43:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:48,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59606325] [2024-06-28 02:43:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:48,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:43:48,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:48,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59606325] [2024-06-28 02:43:48,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59606325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:48,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:48,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:43:48,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27378365] [2024-06-28 02:43:48,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:48,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:43:48,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:48,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:43:48,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:43:48,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:48,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 153 transitions, 1470 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 02:43:48,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:48,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:48,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:49,161 INFO L124 PetriNetUnfolderBase]: 5669/8371 cut-off events. [2024-06-28 02:43:49,161 INFO L125 PetriNetUnfolderBase]: For 154303/154559 co-relation queries the response was YES. [2024-06-28 02:43:49,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46122 conditions, 8371 events. 5669/8371 cut-off events. For 154303/154559 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 49122 event pairs, 2029 based on Foata normal form. 34/8380 useless extension candidates. Maximal degree in co-relation 46069. Up to 7826 conditions per place. [2024-06-28 02:43:49,223 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 128 selfloop transitions, 29 changer transitions 0/170 dead transitions. [2024-06-28 02:43:49,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 170 transitions, 1828 flow [2024-06-28 02:43:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:43:49,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:43:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-06-28 02:43:49,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-06-28 02:43:49,225 INFO L175 Difference]: Start difference. First operand has 119 places, 153 transitions, 1470 flow. Second operand 4 states and 134 transitions. [2024-06-28 02:43:49,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 170 transitions, 1828 flow [2024-06-28 02:43:49,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 170 transitions, 1735 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-06-28 02:43:49,383 INFO L231 Difference]: Finished difference. Result has 122 places, 153 transitions, 1451 flow [2024-06-28 02:43:49,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1451, PETRI_PLACES=122, PETRI_TRANSITIONS=153} [2024-06-28 02:43:49,384 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-06-28 02:43:49,384 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 153 transitions, 1451 flow [2024-06-28 02:43:49,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 02:43:49,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:49,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:49,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:43:49,384 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:49,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:49,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1999758960, now seen corresponding path program 1 times [2024-06-28 02:43:49,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:49,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909823686] [2024-06-28 02:43:49,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:49,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:49,563 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 02:43:49,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:49,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909823686] [2024-06-28 02:43:49,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909823686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:49,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:49,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:43:49,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28817749] [2024-06-28 02:43:49,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:49,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:43:49,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:49,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:43:49,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:43:49,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:49,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 153 transitions, 1451 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 02:43:49,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:49,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:49,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:50,353 INFO L124 PetriNetUnfolderBase]: 5840/8643 cut-off events. [2024-06-28 02:43:50,353 INFO L125 PetriNetUnfolderBase]: For 160704/160759 co-relation queries the response was YES. [2024-06-28 02:43:50,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45627 conditions, 8643 events. 5840/8643 cut-off events. For 160704/160759 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 51313 event pairs, 2282 based on Foata normal form. 63/8679 useless extension candidates. Maximal degree in co-relation 45572. Up to 7977 conditions per place. [2024-06-28 02:43:50,422 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 143 selfloop transitions, 17 changer transitions 0/176 dead transitions. [2024-06-28 02:43:50,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 176 transitions, 1851 flow [2024-06-28 02:43:50,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:43:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:43:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-28 02:43:50,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.611764705882353 [2024-06-28 02:43:50,424 INFO L175 Difference]: Start difference. First operand has 122 places, 153 transitions, 1451 flow. Second operand 5 states and 156 transitions. [2024-06-28 02:43:50,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 176 transitions, 1851 flow [2024-06-28 02:43:50,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 176 transitions, 1793 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:43:50,576 INFO L231 Difference]: Finished difference. Result has 124 places, 156 transitions, 1467 flow [2024-06-28 02:43:50,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1467, PETRI_PLACES=124, PETRI_TRANSITIONS=156} [2024-06-28 02:43:50,576 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-28 02:43:50,577 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 156 transitions, 1467 flow [2024-06-28 02:43:50,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 02:43:50,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:50,577 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 02:43:50,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:43:50,577 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:50,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:50,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2144125132, now seen corresponding path program 1 times [2024-06-28 02:43:50,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:50,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516325099] [2024-06-28 02:43:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:50,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:50,766 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 02:43:50,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:50,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516325099] [2024-06-28 02:43:50,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516325099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:50,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:50,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:43:50,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468729106] [2024-06-28 02:43:50,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:50,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:43:50,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:50,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:43:50,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:43:50,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:43:50,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 156 transitions, 1467 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 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 02:43:50,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:50,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:43:50,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:51,741 INFO L124 PetriNetUnfolderBase]: 7463/10908 cut-off events. [2024-06-28 02:43:51,741 INFO L125 PetriNetUnfolderBase]: For 207787/207797 co-relation queries the response was YES. [2024-06-28 02:43:51,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57860 conditions, 10908 events. 7463/10908 cut-off events. For 207787/207797 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 63724 event pairs, 2649 based on Foata normal form. 10/10913 useless extension candidates. Maximal degree in co-relation 57804. Up to 10181 conditions per place. [2024-06-28 02:43:51,827 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 177 selfloop transitions, 26 changer transitions 0/212 dead transitions. [2024-06-28 02:43:51,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 212 transitions, 2255 flow [2024-06-28 02:43:51,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:43:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:43:51,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-28 02:43:51,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6045751633986928 [2024-06-28 02:43:51,828 INFO L175 Difference]: Start difference. First operand has 124 places, 156 transitions, 1467 flow. Second operand 6 states and 185 transitions. [2024-06-28 02:43:51,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 212 transitions, 2255 flow [2024-06-28 02:43:52,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 212 transitions, 2198 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 02:43:52,133 INFO L231 Difference]: Finished difference. Result has 130 places, 179 transitions, 1720 flow [2024-06-28 02:43:52,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1720, PETRI_PLACES=130, PETRI_TRANSITIONS=179} [2024-06-28 02:43:52,134 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-28 02:43:52,134 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 179 transitions, 1720 flow [2024-06-28 02:43:52,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 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 02:43:52,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:52,134 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 02:43:52,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:43:52,134 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:52,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:52,135 INFO L85 PathProgramCache]: Analyzing trace with hash 3712110, now seen corresponding path program 2 times [2024-06-28 02:43:52,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:52,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123169405] [2024-06-28 02:43:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:52,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:52,324 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 02:43:52,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:52,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123169405] [2024-06-28 02:43:52,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123169405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:52,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:52,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:43:52,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859408919] [2024-06-28 02:43:52,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:43:52,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:43:52,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:43:52,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:43:52,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 179 transitions, 1720 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 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 02:43:52,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:52,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:43:52,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:53,381 INFO L124 PetriNetUnfolderBase]: 7479/10932 cut-off events. [2024-06-28 02:43:53,381 INFO L125 PetriNetUnfolderBase]: For 226157/226173 co-relation queries the response was YES. [2024-06-28 02:43:53,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60283 conditions, 10932 events. 7479/10932 cut-off events. For 226157/226173 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 63918 event pairs, 2654 based on Foata normal form. 9/10937 useless extension candidates. Maximal degree in co-relation 60223. Up to 10198 conditions per place. [2024-06-28 02:43:53,474 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 169 selfloop transitions, 30 changer transitions 0/208 dead transitions. [2024-06-28 02:43:53,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 208 transitions, 2334 flow [2024-06-28 02:43:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:43:53,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:43:53,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2024-06-28 02:43:53,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6039215686274509 [2024-06-28 02:43:53,476 INFO L175 Difference]: Start difference. First operand has 130 places, 179 transitions, 1720 flow. Second operand 5 states and 154 transitions. [2024-06-28 02:43:53,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 208 transitions, 2334 flow [2024-06-28 02:43:53,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 208 transitions, 2302 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-06-28 02:43:53,720 INFO L231 Difference]: Finished difference. Result has 136 places, 185 transitions, 1829 flow [2024-06-28 02:43:53,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1829, PETRI_PLACES=136, PETRI_TRANSITIONS=185} [2024-06-28 02:43:53,721 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-28 02:43:53,721 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 185 transitions, 1829 flow [2024-06-28 02:43:53,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 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 02:43:53,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:53,722 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 02:43:53,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:43:53,722 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:53,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:53,722 INFO L85 PathProgramCache]: Analyzing trace with hash 3700950, now seen corresponding path program 3 times [2024-06-28 02:43:53,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:53,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779527912] [2024-06-28 02:43:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:53,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:53,909 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 02:43:53,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:53,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779527912] [2024-06-28 02:43:53,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779527912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:53,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:53,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:43:53,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462798076] [2024-06-28 02:43:53,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:53,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:43:53,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:53,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:43:53,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:43:53,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:43:53,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 185 transitions, 1829 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 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 02:43:53,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:53,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:43:53,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:54,908 INFO L124 PetriNetUnfolderBase]: 7472/10925 cut-off events. [2024-06-28 02:43:54,909 INFO L125 PetriNetUnfolderBase]: For 241100/241120 co-relation queries the response was YES. [2024-06-28 02:43:54,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61037 conditions, 10925 events. 7472/10925 cut-off events. For 241100/241120 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 63760 event pairs, 2649 based on Foata normal form. 18/10938 useless extension candidates. Maximal degree in co-relation 60973. Up to 10191 conditions per place. [2024-06-28 02:43:55,004 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 171 selfloop transitions, 31 changer transitions 0/211 dead transitions. [2024-06-28 02:43:55,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 211 transitions, 2303 flow [2024-06-28 02:43:55,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:43:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:43:55,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-06-28 02:43:55,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6196078431372549 [2024-06-28 02:43:55,005 INFO L175 Difference]: Start difference. First operand has 136 places, 185 transitions, 1829 flow. Second operand 5 states and 158 transitions. [2024-06-28 02:43:55,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 211 transitions, 2303 flow [2024-06-28 02:43:55,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 211 transitions, 2243 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-28 02:43:55,330 INFO L231 Difference]: Finished difference. Result has 140 places, 185 transitions, 1845 flow [2024-06-28 02:43:55,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1845, PETRI_PLACES=140, PETRI_TRANSITIONS=185} [2024-06-28 02:43:55,331 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2024-06-28 02:43:55,331 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 185 transitions, 1845 flow [2024-06-28 02:43:55,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 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 02:43:55,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:55,331 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 02:43:55,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:43:55,331 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:55,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash -936754310, now seen corresponding path program 1 times [2024-06-28 02:43:55,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:55,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121824633] [2024-06-28 02:43:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:55,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:55,513 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 02:43:55,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:55,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121824633] [2024-06-28 02:43:55,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121824633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:55,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:55,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:43:55,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507901862] [2024-06-28 02:43:55,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:55,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:43:55,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:55,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:43:55,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:43:55,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:43:55,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 185 transitions, 1845 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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 02:43:55,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:55,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:43:55,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:56,399 INFO L124 PetriNetUnfolderBase]: 6148/8990 cut-off events. [2024-06-28 02:43:56,399 INFO L125 PetriNetUnfolderBase]: For 216254/216258 co-relation queries the response was YES. [2024-06-28 02:43:56,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51951 conditions, 8990 events. 6148/8990 cut-off events. For 216254/216258 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 51752 event pairs, 2307 based on Foata normal form. 6/8992 useless extension candidates. Maximal degree in co-relation 51885. Up to 8422 conditions per place. [2024-06-28 02:43:56,482 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 188 selfloop transitions, 33 changer transitions 0/231 dead transitions. [2024-06-28 02:43:56,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 231 transitions, 2616 flow [2024-06-28 02:43:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:43:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:43:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-28 02:43:56,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-28 02:43:56,483 INFO L175 Difference]: Start difference. First operand has 140 places, 185 transitions, 1845 flow. Second operand 6 states and 187 transitions. [2024-06-28 02:43:56,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 231 transitions, 2616 flow [2024-06-28 02:43:56,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 231 transitions, 2568 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:43:56,713 INFO L231 Difference]: Finished difference. Result has 145 places, 202 transitions, 2059 flow [2024-06-28 02:43:56,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2059, PETRI_PLACES=145, PETRI_TRANSITIONS=202} [2024-06-28 02:43:56,714 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 91 predicate places. [2024-06-28 02:43:56,714 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 202 transitions, 2059 flow [2024-06-28 02:43:56,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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 02:43:56,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:56,714 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 02:43:56,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:43:56,715 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:56,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:56,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2064740794, now seen corresponding path program 2 times [2024-06-28 02:43:56,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:56,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644588646] [2024-06-28 02:43:56,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:56,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:56,918 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 02:43:56,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:56,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644588646] [2024-06-28 02:43:56,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644588646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:56,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:56,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:43:56,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703834527] [2024-06-28 02:43:56,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:56,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:43:56,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:56,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:43:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:43:56,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:43:56,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 202 transitions, 2059 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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 02:43:56,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:56,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:43:56,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:57,846 INFO L124 PetriNetUnfolderBase]: 6164/9016 cut-off events. [2024-06-28 02:43:57,846 INFO L125 PetriNetUnfolderBase]: For 221429/221435 co-relation queries the response was YES. [2024-06-28 02:43:57,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53712 conditions, 9016 events. 6164/9016 cut-off events. For 221429/221435 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 51950 event pairs, 2307 based on Foata normal form. 8/9020 useless extension candidates. Maximal degree in co-relation 53644. Up to 8457 conditions per place. [2024-06-28 02:43:57,926 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 191 selfloop transitions, 30 changer transitions 0/231 dead transitions. [2024-06-28 02:43:57,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 231 transitions, 2726 flow [2024-06-28 02:43:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:43:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:43:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-06-28 02:43:57,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6313725490196078 [2024-06-28 02:43:57,928 INFO L175 Difference]: Start difference. First operand has 145 places, 202 transitions, 2059 flow. Second operand 5 states and 161 transitions. [2024-06-28 02:43:57,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 231 transitions, 2726 flow [2024-06-28 02:43:58,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 231 transitions, 2646 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-28 02:43:58,189 INFO L231 Difference]: Finished difference. Result has 149 places, 207 transitions, 2116 flow [2024-06-28 02:43:58,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2116, PETRI_PLACES=149, PETRI_TRANSITIONS=207} [2024-06-28 02:43:58,190 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 95 predicate places. [2024-06-28 02:43:58,191 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 207 transitions, 2116 flow [2024-06-28 02:43:58,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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 02:43:58,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:58,191 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 02:43:58,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:43:58,191 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:58,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:58,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2064746374, now seen corresponding path program 3 times [2024-06-28 02:43:58,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:58,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504768000] [2024-06-28 02:43:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:58,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:58,379 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 02:43:58,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:58,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504768000] [2024-06-28 02:43:58,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504768000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:58,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:58,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:43:58,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545805113] [2024-06-28 02:43:58,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:58,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:43:58,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:58,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:43:58,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:43:58,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:43:58,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 207 transitions, 2116 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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 02:43:58,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:58,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:43:58,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:59,301 INFO L124 PetriNetUnfolderBase]: 6157/9008 cut-off events. [2024-06-28 02:43:59,301 INFO L125 PetriNetUnfolderBase]: For 233071/233079 co-relation queries the response was YES. [2024-06-28 02:43:59,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53823 conditions, 9008 events. 6157/9008 cut-off events. For 233071/233079 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 51964 event pairs, 2299 based on Foata normal form. 10/9015 useless extension candidates. Maximal degree in co-relation 53753. Up to 8450 conditions per place. [2024-06-28 02:43:59,386 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 195 selfloop transitions, 33 changer transitions 0/238 dead transitions. [2024-06-28 02:43:59,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 238 transitions, 2662 flow [2024-06-28 02:43:59,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:43:59,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:43:59,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-06-28 02:43:59,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-06-28 02:43:59,387 INFO L175 Difference]: Start difference. First operand has 149 places, 207 transitions, 2116 flow. Second operand 7 states and 210 transitions. [2024-06-28 02:43:59,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 238 transitions, 2662 flow [2024-06-28 02:43:59,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 238 transitions, 2566 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 02:43:59,669 INFO L231 Difference]: Finished difference. Result has 153 places, 208 transitions, 2105 flow [2024-06-28 02:43:59,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2105, PETRI_PLACES=153, PETRI_TRANSITIONS=208} [2024-06-28 02:43:59,670 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-28 02:43:59,670 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 208 transitions, 2105 flow [2024-06-28 02:43:59,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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 02:43:59,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:59,671 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 02:43:59,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:43:59,671 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:43:59,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:59,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1689405949, now seen corresponding path program 1 times [2024-06-28 02:43:59,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:59,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986868183] [2024-06-28 02:43:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:59,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:59,834 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 02:43:59,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:59,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986868183] [2024-06-28 02:43:59,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986868183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:59,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:59,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:43:59,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911891165] [2024-06-28 02:43:59,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:59,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:43:59,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:43:59,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:43:59,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:43:59,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 208 transitions, 2105 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 02:43:59,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:59,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:43:59,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:00,849 INFO L124 PetriNetUnfolderBase]: 6897/10157 cut-off events. [2024-06-28 02:44:00,849 INFO L125 PetriNetUnfolderBase]: For 318619/318786 co-relation queries the response was YES. [2024-06-28 02:44:00,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62405 conditions, 10157 events. 6897/10157 cut-off events. For 318619/318786 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 60290 event pairs, 2392 based on Foata normal form. 45/9977 useless extension candidates. Maximal degree in co-relation 62334. Up to 9062 conditions per place. [2024-06-28 02:44:01,135 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 176 selfloop transitions, 18 changer transitions 0/238 dead transitions. [2024-06-28 02:44:01,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 238 transitions, 2743 flow [2024-06-28 02:44:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:44:01,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:44:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-28 02:44:01,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6127450980392157 [2024-06-28 02:44:01,136 INFO L175 Difference]: Start difference. First operand has 153 places, 208 transitions, 2105 flow. Second operand 4 states and 125 transitions. [2024-06-28 02:44:01,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 238 transitions, 2743 flow [2024-06-28 02:44:01,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 238 transitions, 2655 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:44:01,396 INFO L231 Difference]: Finished difference. Result has 153 places, 225 transitions, 2314 flow [2024-06-28 02:44:01,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2029, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2314, PETRI_PLACES=153, PETRI_TRANSITIONS=225} [2024-06-28 02:44:01,397 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-28 02:44:01,397 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 225 transitions, 2314 flow [2024-06-28 02:44:01,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 02:44:01,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:01,397 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 02:44:01,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:44:01,397 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:01,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:01,398 INFO L85 PathProgramCache]: Analyzing trace with hash 244224183, now seen corresponding path program 1 times [2024-06-28 02:44:01,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:01,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951166965] [2024-06-28 02:44:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:01,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:01,610 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 02:44:01,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:01,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951166965] [2024-06-28 02:44:01,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951166965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:01,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:01,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:44:01,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577208836] [2024-06-28 02:44:01,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:01,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:44:01,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:01,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:44:01,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:44:01,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:44:01,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 225 transitions, 2314 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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 02:44:01,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:01,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:44:01,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:02,864 INFO L124 PetriNetUnfolderBase]: 6790/10087 cut-off events. [2024-06-28 02:44:02,864 INFO L125 PetriNetUnfolderBase]: For 343108/343678 co-relation queries the response was YES. [2024-06-28 02:44:02,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65955 conditions, 10087 events. 6790/10087 cut-off events. For 343108/343678 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 60430 event pairs, 2033 based on Foata normal form. 73/9793 useless extension candidates. Maximal degree in co-relation 65882. Up to 8986 conditions per place. [2024-06-28 02:44:02,957 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 174 selfloop transitions, 61 changer transitions 0/263 dead transitions. [2024-06-28 02:44:02,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 263 transitions, 3094 flow [2024-06-28 02:44:02,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:44:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:44:02,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-06-28 02:44:02,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2024-06-28 02:44:02,958 INFO L175 Difference]: Start difference. First operand has 153 places, 225 transitions, 2314 flow. Second operand 6 states and 194 transitions. [2024-06-28 02:44:02,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 263 transitions, 3094 flow [2024-06-28 02:44:03,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 263 transitions, 3074 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-06-28 02:44:03,322 INFO L231 Difference]: Finished difference. Result has 159 places, 231 transitions, 2542 flow [2024-06-28 02:44:03,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2294, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2542, PETRI_PLACES=159, PETRI_TRANSITIONS=231} [2024-06-28 02:44:03,322 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 105 predicate places. [2024-06-28 02:44:03,322 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 231 transitions, 2542 flow [2024-06-28 02:44:03,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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 02:44:03,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:03,323 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 02:44:03,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:44:03,323 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:03,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash 247081143, now seen corresponding path program 2 times [2024-06-28 02:44:03,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:03,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576345114] [2024-06-28 02:44:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:03,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:03,536 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 02:44:03,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:03,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576345114] [2024-06-28 02:44:03,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576345114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:03,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:03,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:44:03,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933103766] [2024-06-28 02:44:03,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:03,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:44:03,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:03,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:44:03,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:44:03,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:44:03,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 231 transitions, 2542 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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 02:44:03,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:03,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:44:03,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:04,721 INFO L124 PetriNetUnfolderBase]: 6833/10150 cut-off events. [2024-06-28 02:44:04,721 INFO L125 PetriNetUnfolderBase]: For 373165/373803 co-relation queries the response was YES. [2024-06-28 02:44:04,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68476 conditions, 10150 events. 6833/10150 cut-off events. For 373165/373803 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 60935 event pairs, 2203 based on Foata normal form. 58/9833 useless extension candidates. Maximal degree in co-relation 68400. Up to 9189 conditions per place. [2024-06-28 02:44:04,833 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 175 selfloop transitions, 57 changer transitions 0/260 dead transitions. [2024-06-28 02:44:04,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 260 transitions, 3134 flow [2024-06-28 02:44:04,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:44:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:44:04,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-06-28 02:44:04,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6143790849673203 [2024-06-28 02:44:04,834 INFO L175 Difference]: Start difference. First operand has 159 places, 231 transitions, 2542 flow. Second operand 6 states and 188 transitions. [2024-06-28 02:44:04,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 260 transitions, 3134 flow [2024-06-28 02:44:05,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 260 transitions, 2992 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-06-28 02:44:05,300 INFO L231 Difference]: Finished difference. Result has 163 places, 234 transitions, 2591 flow [2024-06-28 02:44:05,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2591, PETRI_PLACES=163, PETRI_TRANSITIONS=234} [2024-06-28 02:44:05,301 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2024-06-28 02:44:05,301 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 234 transitions, 2591 flow [2024-06-28 02:44:05,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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 02:44:05,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:05,301 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 02:44:05,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:44:05,301 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:05,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:05,301 INFO L85 PathProgramCache]: Analyzing trace with hash -417547849, now seen corresponding path program 3 times [2024-06-28 02:44:05,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:05,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966258874] [2024-06-28 02:44:05,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:05,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:05,507 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 02:44:05,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:05,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966258874] [2024-06-28 02:44:05,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966258874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:05,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:05,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:44:05,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101046889] [2024-06-28 02:44:05,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:05,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:44:05,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:05,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:44:05,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:44:05,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:44:05,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 234 transitions, 2591 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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 02:44:05,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:05,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:44:05,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:06,682 INFO L124 PetriNetUnfolderBase]: 6808/10117 cut-off events. [2024-06-28 02:44:06,682 INFO L125 PetriNetUnfolderBase]: For 387415/388045 co-relation queries the response was YES. [2024-06-28 02:44:06,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68334 conditions, 10117 events. 6808/10117 cut-off events. For 387415/388045 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 60573 event pairs, 2023 based on Foata normal form. 84/9830 useless extension candidates. Maximal degree in co-relation 68256. Up to 9116 conditions per place. [2024-06-28 02:44:06,791 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 178 selfloop transitions, 53 changer transitions 0/259 dead transitions. [2024-06-28 02:44:06,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 259 transitions, 3117 flow [2024-06-28 02:44:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:44:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:44:06,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-06-28 02:44:06,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-06-28 02:44:06,792 INFO L175 Difference]: Start difference. First operand has 163 places, 234 transitions, 2591 flow. Second operand 5 states and 165 transitions. [2024-06-28 02:44:06,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 259 transitions, 3117 flow [2024-06-28 02:44:07,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 259 transitions, 2956 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 02:44:07,312 INFO L231 Difference]: Finished difference. Result has 164 places, 234 transitions, 2550 flow [2024-06-28 02:44:07,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2550, PETRI_PLACES=164, PETRI_TRANSITIONS=234} [2024-06-28 02:44:07,313 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 110 predicate places. [2024-06-28 02:44:07,313 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 234 transitions, 2550 flow [2024-06-28 02:44:07,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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 02:44:07,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:07,313 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 02:44:07,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:44:07,314 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:07,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:07,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1483325819, now seen corresponding path program 1 times [2024-06-28 02:44:07,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:07,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979743005] [2024-06-28 02:44:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:07,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:07,509 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 02:44:07,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:07,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979743005] [2024-06-28 02:44:07,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979743005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:07,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:07,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:07,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345504498] [2024-06-28 02:44:07,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:07,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:07,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:07,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:44:07,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 234 transitions, 2550 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:07,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:07,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:44:07,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:08,678 INFO L124 PetriNetUnfolderBase]: 7307/10733 cut-off events. [2024-06-28 02:44:08,678 INFO L125 PetriNetUnfolderBase]: For 405443/406269 co-relation queries the response was YES. [2024-06-28 02:44:08,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71258 conditions, 10733 events. 7307/10733 cut-off events. For 405443/406269 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 63826 event pairs, 2253 based on Foata normal form. 123/10438 useless extension candidates. Maximal degree in co-relation 71179. Up to 9459 conditions per place. [2024-06-28 02:44:08,787 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 171 selfloop transitions, 93 changer transitions 0/289 dead transitions. [2024-06-28 02:44:08,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 289 transitions, 3640 flow [2024-06-28 02:44:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:44:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:44:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-06-28 02:44:08,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6386554621848739 [2024-06-28 02:44:08,788 INFO L175 Difference]: Start difference. First operand has 164 places, 234 transitions, 2550 flow. Second operand 7 states and 228 transitions. [2024-06-28 02:44:08,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 289 transitions, 3640 flow [2024-06-28 02:44:09,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 289 transitions, 3523 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:44:09,240 INFO L231 Difference]: Finished difference. Result has 167 places, 246 transitions, 2828 flow [2024-06-28 02:44:09,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2433, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2828, PETRI_PLACES=167, PETRI_TRANSITIONS=246} [2024-06-28 02:44:09,241 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 113 predicate places. [2024-06-28 02:44:09,241 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 246 transitions, 2828 flow [2024-06-28 02:44:09,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:09,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:09,241 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 02:44:09,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:44:09,241 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:09,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:09,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1483445975, now seen corresponding path program 1 times [2024-06-28 02:44:09,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:09,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011919538] [2024-06-28 02:44:09,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:09,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:09,439 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 02:44:09,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:09,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011919538] [2024-06-28 02:44:09,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011919538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:09,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:09,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:09,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551147910] [2024-06-28 02:44:09,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:09,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:09,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:09,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:09,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:09,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:44:09,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 246 transitions, 2828 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:09,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:09,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:44:09,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:10,719 INFO L124 PetriNetUnfolderBase]: 7736/11316 cut-off events. [2024-06-28 02:44:10,719 INFO L125 PetriNetUnfolderBase]: For 392948/392980 co-relation queries the response was YES. [2024-06-28 02:44:10,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72992 conditions, 11316 events. 7736/11316 cut-off events. For 392948/392980 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 66408 event pairs, 2556 based on Foata normal form. 30/11342 useless extension candidates. Maximal degree in co-relation 72912. Up to 10323 conditions per place. [2024-06-28 02:44:10,831 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 244 selfloop transitions, 63 changer transitions 0/316 dead transitions. [2024-06-28 02:44:10,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 316 transitions, 4116 flow [2024-06-28 02:44:10,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:44:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:44:10,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 219 transitions. [2024-06-28 02:44:10,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6134453781512605 [2024-06-28 02:44:10,832 INFO L175 Difference]: Start difference. First operand has 167 places, 246 transitions, 2828 flow. Second operand 7 states and 219 transitions. [2024-06-28 02:44:10,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 316 transitions, 4116 flow [2024-06-28 02:44:11,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 316 transitions, 3970 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-06-28 02:44:11,341 INFO L231 Difference]: Finished difference. Result has 175 places, 271 transitions, 3166 flow [2024-06-28 02:44:11,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3166, PETRI_PLACES=175, PETRI_TRANSITIONS=271} [2024-06-28 02:44:11,341 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 121 predicate places. [2024-06-28 02:44:11,342 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 271 transitions, 3166 flow [2024-06-28 02:44:11,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:11,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:11,342 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 02:44:11,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:44:11,342 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:11,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:11,343 INFO L85 PathProgramCache]: Analyzing trace with hash -255980241, now seen corresponding path program 2 times [2024-06-28 02:44:11,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:11,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138602160] [2024-06-28 02:44:11,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:11,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:11,551 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 02:44:11,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:11,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138602160] [2024-06-28 02:44:11,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138602160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:11,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:11,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:11,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228178503] [2024-06-28 02:44:11,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:11,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:11,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:11,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:11,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:11,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:44:11,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 271 transitions, 3166 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:11,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:11,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:44:11,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:12,860 INFO L124 PetriNetUnfolderBase]: 7379/10849 cut-off events. [2024-06-28 02:44:12,861 INFO L125 PetriNetUnfolderBase]: For 468696/469896 co-relation queries the response was YES. [2024-06-28 02:44:12,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76813 conditions, 10849 events. 7379/10849 cut-off events. For 468696/469896 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 64711 event pairs, 2208 based on Foata normal form. 68/10529 useless extension candidates. Maximal degree in co-relation 76728. Up to 9742 conditions per place. [2024-06-28 02:44:12,976 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 202 selfloop transitions, 83 changer transitions 0/314 dead transitions. [2024-06-28 02:44:12,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 314 transitions, 3919 flow [2024-06-28 02:44:12,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:44:12,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:44:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-06-28 02:44:12,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6106442577030813 [2024-06-28 02:44:12,977 INFO L175 Difference]: Start difference. First operand has 175 places, 271 transitions, 3166 flow. Second operand 7 states and 218 transitions. [2024-06-28 02:44:12,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 314 transitions, 3919 flow [2024-06-28 02:44:13,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 314 transitions, 3843 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-06-28 02:44:13,710 INFO L231 Difference]: Finished difference. Result has 181 places, 279 transitions, 3367 flow [2024-06-28 02:44:13,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3090, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3367, PETRI_PLACES=181, PETRI_TRANSITIONS=279} [2024-06-28 02:44:13,710 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 127 predicate places. [2024-06-28 02:44:13,710 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 279 transitions, 3367 flow [2024-06-28 02:44:13,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:13,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:13,711 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 02:44:13,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:44:13,711 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:13,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:13,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1660814645, now seen corresponding path program 2 times [2024-06-28 02:44:13,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:13,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602106630] [2024-06-28 02:44:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:13,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:13,920 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 02:44:13,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:13,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602106630] [2024-06-28 02:44:13,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602106630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:13,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:13,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:13,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419791194] [2024-06-28 02:44:13,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:13,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:13,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:13,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:13,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:13,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:44:13,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 279 transitions, 3367 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:13,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:13,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:44:13,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:15,497 INFO L124 PetriNetUnfolderBase]: 7860/11493 cut-off events. [2024-06-28 02:44:15,497 INFO L125 PetriNetUnfolderBase]: For 444228/444263 co-relation queries the response was YES. [2024-06-28 02:44:15,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77636 conditions, 11493 events. 7860/11493 cut-off events. For 444228/444263 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 67412 event pairs, 2556 based on Foata normal form. 33/11522 useless extension candidates. Maximal degree in co-relation 77549. Up to 10451 conditions per place. [2024-06-28 02:44:15,602 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 251 selfloop transitions, 81 changer transitions 0/341 dead transitions. [2024-06-28 02:44:15,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 341 transitions, 4689 flow [2024-06-28 02:44:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:44:15,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:44:15,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-06-28 02:44:15,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6050420168067226 [2024-06-28 02:44:15,603 INFO L175 Difference]: Start difference. First operand has 181 places, 279 transitions, 3367 flow. Second operand 7 states and 216 transitions. [2024-06-28 02:44:15,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 341 transitions, 4689 flow [2024-06-28 02:44:16,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 341 transitions, 4473 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 02:44:16,334 INFO L231 Difference]: Finished difference. Result has 186 places, 300 transitions, 3632 flow [2024-06-28 02:44:16,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3632, PETRI_PLACES=186, PETRI_TRANSITIONS=300} [2024-06-28 02:44:16,334 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 132 predicate places. [2024-06-28 02:44:16,334 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 300 transitions, 3632 flow [2024-06-28 02:44:16,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:16,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:16,335 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 02:44:16,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:44:16,335 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:16,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:16,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1488087419, now seen corresponding path program 3 times [2024-06-28 02:44:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:16,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432668977] [2024-06-28 02:44:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:16,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:16,657 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 02:44:16,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:16,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432668977] [2024-06-28 02:44:16,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432668977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:16,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:16,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:16,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783534009] [2024-06-28 02:44:16,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:16,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:16,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:16,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:16,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:16,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:44:16,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 300 transitions, 3632 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:16,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:16,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:44:16,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:18,045 INFO L124 PetriNetUnfolderBase]: 7530/11075 cut-off events. [2024-06-28 02:44:18,046 INFO L125 PetriNetUnfolderBase]: For 521368/522540 co-relation queries the response was YES. [2024-06-28 02:44:18,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80258 conditions, 11075 events. 7530/11075 cut-off events. For 521368/522540 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 66201 event pairs, 2209 based on Foata normal form. 70/10758 useless extension candidates. Maximal degree in co-relation 80168. Up to 9888 conditions per place. [2024-06-28 02:44:18,173 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 216 selfloop transitions, 108 changer transitions 0/358 dead transitions. [2024-06-28 02:44:18,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 358 transitions, 4792 flow [2024-06-28 02:44:18,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:44:18,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:44:18,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 243 transitions. [2024-06-28 02:44:18,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5955882352941176 [2024-06-28 02:44:18,174 INFO L175 Difference]: Start difference. First operand has 186 places, 300 transitions, 3632 flow. Second operand 8 states and 243 transitions. [2024-06-28 02:44:18,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 358 transitions, 4792 flow [2024-06-28 02:44:18,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 358 transitions, 4651 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-28 02:44:18,997 INFO L231 Difference]: Finished difference. Result has 194 places, 320 transitions, 4043 flow [2024-06-28 02:44:18,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3491, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4043, PETRI_PLACES=194, PETRI_TRANSITIONS=320} [2024-06-28 02:44:18,997 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 140 predicate places. [2024-06-28 02:44:18,997 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 320 transitions, 4043 flow [2024-06-28 02:44:18,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:18,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:18,998 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 02:44:18,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:44:18,998 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:18,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:18,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1660577495, now seen corresponding path program 3 times [2024-06-28 02:44:18,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:18,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277546849] [2024-06-28 02:44:18,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:18,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:19,181 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 02:44:19,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:19,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277546849] [2024-06-28 02:44:19,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277546849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:19,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:19,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:19,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008022700] [2024-06-28 02:44:19,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:19,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:19,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:19,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:19,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:19,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:44:19,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 320 transitions, 4043 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:19,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:19,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:44:19,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:20,596 INFO L124 PetriNetUnfolderBase]: 7931/11595 cut-off events. [2024-06-28 02:44:20,596 INFO L125 PetriNetUnfolderBase]: For 490753/490790 co-relation queries the response was YES. [2024-06-28 02:44:20,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79960 conditions, 11595 events. 7931/11595 cut-off events. For 490753/490790 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 68076 event pairs, 2557 based on Foata normal form. 35/11626 useless extension candidates. Maximal degree in co-relation 79867. Up to 10545 conditions per place. [2024-06-28 02:44:20,734 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 273 selfloop transitions, 79 changer transitions 0/361 dead transitions. [2024-06-28 02:44:20,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 361 transitions, 5177 flow [2024-06-28 02:44:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:44:20,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:44:20,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-06-28 02:44:20,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-06-28 02:44:20,736 INFO L175 Difference]: Start difference. First operand has 194 places, 320 transitions, 4043 flow. Second operand 7 states and 217 transitions. [2024-06-28 02:44:20,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 361 transitions, 5177 flow [2024-06-28 02:44:21,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 361 transitions, 4964 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-28 02:44:21,717 INFO L231 Difference]: Finished difference. Result has 198 places, 320 transitions, 4003 flow [2024-06-28 02:44:21,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3836, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4003, PETRI_PLACES=198, PETRI_TRANSITIONS=320} [2024-06-28 02:44:21,718 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2024-06-28 02:44:21,718 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 320 transitions, 4003 flow [2024-06-28 02:44:21,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:21,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:21,719 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 02:44:21,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:44:21,719 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:21,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:21,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1394787959, now seen corresponding path program 1 times [2024-06-28 02:44:21,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:21,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446668704] [2024-06-28 02:44:21,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:21,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:21,933 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 02:44:21,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:21,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446668704] [2024-06-28 02:44:21,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446668704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:21,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:21,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:21,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453271427] [2024-06-28 02:44:21,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:21,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:21,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:21,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:21,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:22,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:44:22,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 320 transitions, 4003 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:22,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:22,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:44:22,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:23,520 INFO L124 PetriNetUnfolderBase]: 8132/11898 cut-off events. [2024-06-28 02:44:23,520 INFO L125 PetriNetUnfolderBase]: For 530486/530508 co-relation queries the response was YES. [2024-06-28 02:44:23,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82080 conditions, 11898 events. 8132/11898 cut-off events. For 530486/530508 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 70129 event pairs, 2067 based on Foata normal form. 30/11924 useless extension candidates. Maximal degree in co-relation 81987. Up to 10767 conditions per place. [2024-06-28 02:44:23,659 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 331 selfloop transitions, 39 changer transitions 0/379 dead transitions. [2024-06-28 02:44:23,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 379 transitions, 5155 flow [2024-06-28 02:44:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:44:23,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:44:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-06-28 02:44:23,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6106442577030813 [2024-06-28 02:44:23,661 INFO L175 Difference]: Start difference. First operand has 198 places, 320 transitions, 4003 flow. Second operand 7 states and 218 transitions. [2024-06-28 02:44:23,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 379 transitions, 5155 flow [2024-06-28 02:44:24,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 379 transitions, 5022 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 02:44:24,700 INFO L231 Difference]: Finished difference. Result has 204 places, 330 transitions, 4083 flow [2024-06-28 02:44:24,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3870, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4083, PETRI_PLACES=204, PETRI_TRANSITIONS=330} [2024-06-28 02:44:24,701 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 150 predicate places. [2024-06-28 02:44:24,701 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 330 transitions, 4083 flow [2024-06-28 02:44:24,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:24,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:24,702 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 02:44:24,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:44:24,702 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:24,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:24,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1402197269, now seen corresponding path program 2 times [2024-06-28 02:44:24,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:24,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107435659] [2024-06-28 02:44:24,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:24,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:24,903 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 02:44:24,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:24,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107435659] [2024-06-28 02:44:24,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107435659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:24,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:24,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:24,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243591417] [2024-06-28 02:44:24,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:24,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:24,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:24,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:24,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:24,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:44:24,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 330 transitions, 4083 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:24,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:24,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:44:24,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:26,492 INFO L124 PetriNetUnfolderBase]: 8372/12234 cut-off events. [2024-06-28 02:44:26,493 INFO L125 PetriNetUnfolderBase]: For 571665/571687 co-relation queries the response was YES. [2024-06-28 02:44:26,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85844 conditions, 12234 events. 8372/12234 cut-off events. For 571665/571687 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 72216 event pairs, 2557 based on Foata normal form. 30/12260 useless extension candidates. Maximal degree in co-relation 85748. Up to 11203 conditions per place. [2024-06-28 02:44:26,632 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 335 selfloop transitions, 36 changer transitions 0/380 dead transitions. [2024-06-28 02:44:26,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 380 transitions, 5196 flow [2024-06-28 02:44:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:44:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:44:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-06-28 02:44:26,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6022408963585434 [2024-06-28 02:44:26,634 INFO L175 Difference]: Start difference. First operand has 204 places, 330 transitions, 4083 flow. Second operand 7 states and 215 transitions. [2024-06-28 02:44:26,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 380 transitions, 5196 flow [2024-06-28 02:44:27,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 380 transitions, 5142 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 02:44:27,821 INFO L231 Difference]: Finished difference. Result has 210 places, 336 transitions, 4193 flow [2024-06-28 02:44:27,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4033, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4193, PETRI_PLACES=210, PETRI_TRANSITIONS=336} [2024-06-28 02:44:27,822 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-28 02:44:27,822 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 336 transitions, 4193 flow [2024-06-28 02:44:27,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:27,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:27,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:44:27,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:44:27,823 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:27,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:27,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1660811669, now seen corresponding path program 3 times [2024-06-28 02:44:27,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:27,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257694795] [2024-06-28 02:44:27,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:27,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:28,051 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 02:44:28,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:28,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257694795] [2024-06-28 02:44:28,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257694795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:28,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:28,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:28,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146545394] [2024-06-28 02:44:28,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:28,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:28,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:28,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:28,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:28,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:44:28,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 336 transitions, 4193 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:28,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:28,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:44:28,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:29,617 INFO L124 PetriNetUnfolderBase]: 8328/12174 cut-off events. [2024-06-28 02:44:29,617 INFO L125 PetriNetUnfolderBase]: For 587577/587599 co-relation queries the response was YES. [2024-06-28 02:44:29,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85833 conditions, 12174 events. 8328/12174 cut-off events. For 587577/587599 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 71868 event pairs, 2556 based on Foata normal form. 34/12204 useless extension candidates. Maximal degree in co-relation 85734. Up to 11266 conditions per place. [2024-06-28 02:44:29,774 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 334 selfloop transitions, 33 changer transitions 0/376 dead transitions. [2024-06-28 02:44:29,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 376 transitions, 5068 flow [2024-06-28 02:44:29,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:44:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:44:29,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-06-28 02:44:29,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-06-28 02:44:29,775 INFO L175 Difference]: Start difference. First operand has 210 places, 336 transitions, 4193 flow. Second operand 7 states and 210 transitions. [2024-06-28 02:44:29,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 376 transitions, 5068 flow [2024-06-28 02:44:31,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 376 transitions, 5022 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 02:44:31,371 INFO L231 Difference]: Finished difference. Result has 214 places, 337 transitions, 4239 flow [2024-06-28 02:44:31,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4149, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4239, PETRI_PLACES=214, PETRI_TRANSITIONS=337} [2024-06-28 02:44:31,371 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 160 predicate places. [2024-06-28 02:44:31,372 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 337 transitions, 4239 flow [2024-06-28 02:44:31,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:31,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:31,372 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 02:44:31,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:44:31,372 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:31,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:31,373 INFO L85 PathProgramCache]: Analyzing trace with hash 767747173, now seen corresponding path program 4 times [2024-06-28 02:44:31,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:31,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532060103] [2024-06-28 02:44:31,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:31,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:31,591 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 02:44:31,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:31,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532060103] [2024-06-28 02:44:31,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532060103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:31,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:31,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:31,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977564727] [2024-06-28 02:44:31,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:31,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:31,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:31,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:31,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:31,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:44:31,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 337 transitions, 4239 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:31,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:31,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:44:31,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:33,156 INFO L124 PetriNetUnfolderBase]: 7928/11675 cut-off events. [2024-06-28 02:44:33,157 INFO L125 PetriNetUnfolderBase]: For 664894/666122 co-relation queries the response was YES. [2024-06-28 02:44:33,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87673 conditions, 11675 events. 7928/11675 cut-off events. For 664894/666122 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 70450 event pairs, 2278 based on Foata normal form. 119/11426 useless extension candidates. Maximal degree in co-relation 87572. Up to 10302 conditions per place. [2024-06-28 02:44:33,302 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 243 selfloop transitions, 112 changer transitions 0/395 dead transitions. [2024-06-28 02:44:33,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 395 transitions, 5549 flow [2024-06-28 02:44:33,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:44:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:44:33,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 257 transitions. [2024-06-28 02:44:33,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6299019607843137 [2024-06-28 02:44:33,304 INFO L175 Difference]: Start difference. First operand has 214 places, 337 transitions, 4239 flow. Second operand 8 states and 257 transitions. [2024-06-28 02:44:33,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 395 transitions, 5549 flow [2024-06-28 02:44:34,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 395 transitions, 5485 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 02:44:34,714 INFO L231 Difference]: Finished difference. Result has 217 places, 345 transitions, 4548 flow [2024-06-28 02:44:34,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4175, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4548, PETRI_PLACES=217, PETRI_TRANSITIONS=345} [2024-06-28 02:44:34,715 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 163 predicate places. [2024-06-28 02:44:34,715 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 345 transitions, 4548 flow [2024-06-28 02:44:34,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:34,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:34,715 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 02:44:34,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:44:34,716 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:34,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:34,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1473818169, now seen corresponding path program 5 times [2024-06-28 02:44:34,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:34,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428461996] [2024-06-28 02:44:34,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:34,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:34,913 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 02:44:34,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:34,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428461996] [2024-06-28 02:44:34,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428461996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:34,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:34,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:34,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244607559] [2024-06-28 02:44:34,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:34,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:34,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:34,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:34,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:34,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:44:34,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 345 transitions, 4548 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:34,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:34,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:44:34,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:36,550 INFO L124 PetriNetUnfolderBase]: 7974/11746 cut-off events. [2024-06-28 02:44:36,550 INFO L125 PetriNetUnfolderBase]: For 697434/698685 co-relation queries the response was YES. [2024-06-28 02:44:36,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89230 conditions, 11746 events. 7974/11746 cut-off events. For 697434/698685 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 70938 event pairs, 2278 based on Foata normal form. 155/11533 useless extension candidates. Maximal degree in co-relation 89128. Up to 10348 conditions per place. [2024-06-28 02:44:36,702 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 242 selfloop transitions, 123 changer transitions 0/405 dead transitions. [2024-06-28 02:44:36,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 405 transitions, 5908 flow [2024-06-28 02:44:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:44:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:44:36,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 280 transitions. [2024-06-28 02:44:36,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6100217864923747 [2024-06-28 02:44:36,703 INFO L175 Difference]: Start difference. First operand has 217 places, 345 transitions, 4548 flow. Second operand 9 states and 280 transitions. [2024-06-28 02:44:36,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 405 transitions, 5908 flow [2024-06-28 02:44:38,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 405 transitions, 5531 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-28 02:44:38,159 INFO L231 Difference]: Finished difference. Result has 221 places, 353 transitions, 4583 flow [2024-06-28 02:44:38,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4215, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4583, PETRI_PLACES=221, PETRI_TRANSITIONS=353} [2024-06-28 02:44:38,159 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 167 predicate places. [2024-06-28 02:44:38,159 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 353 transitions, 4583 flow [2024-06-28 02:44:38,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:38,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:38,160 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 02:44:38,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:44:38,160 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:38,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:38,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1479363759, now seen corresponding path program 6 times [2024-06-28 02:44:38,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:38,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589757967] [2024-06-28 02:44:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:38,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:38,351 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 02:44:38,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:38,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589757967] [2024-06-28 02:44:38,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589757967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:38,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:38,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:38,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146515730] [2024-06-28 02:44:38,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:38,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:38,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:38,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:38,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:38,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:44:38,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 353 transitions, 4583 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:38,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:38,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:44:38,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:39,931 INFO L124 PetriNetUnfolderBase]: 7980/11749 cut-off events. [2024-06-28 02:44:39,932 INFO L125 PetriNetUnfolderBase]: For 722451/723728 co-relation queries the response was YES. [2024-06-28 02:44:40,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89636 conditions, 11749 events. 7980/11749 cut-off events. For 722451/723728 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 70768 event pairs, 2308 based on Foata normal form. 146/11512 useless extension candidates. Maximal degree in co-relation 89533. Up to 10356 conditions per place. [2024-06-28 02:44:40,078 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 237 selfloop transitions, 112 changer transitions 0/389 dead transitions. [2024-06-28 02:44:40,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 389 transitions, 5721 flow [2024-06-28 02:44:40,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:44:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:44:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-06-28 02:44:40,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-06-28 02:44:40,079 INFO L175 Difference]: Start difference. First operand has 221 places, 353 transitions, 4583 flow. Second operand 6 states and 198 transitions. [2024-06-28 02:44:40,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 389 transitions, 5721 flow [2024-06-28 02:44:41,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 389 transitions, 5449 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 02:44:41,637 INFO L231 Difference]: Finished difference. Result has 222 places, 353 transitions, 4544 flow [2024-06-28 02:44:41,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4311, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4544, PETRI_PLACES=222, PETRI_TRANSITIONS=353} [2024-06-28 02:44:41,637 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 168 predicate places. [2024-06-28 02:44:41,637 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 353 transitions, 4544 flow [2024-06-28 02:44:41,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:41,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:41,638 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 02:44:41,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:44:41,638 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:41,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1479358923, now seen corresponding path program 4 times [2024-06-28 02:44:41,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:41,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723364661] [2024-06-28 02:44:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:41,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:41,814 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 02:44:41,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:41,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723364661] [2024-06-28 02:44:41,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723364661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:41,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:41,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:41,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542118054] [2024-06-28 02:44:41,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:41,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:41,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:41,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:41,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:41,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:44:41,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 353 transitions, 4544 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:41,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:41,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:44:41,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:43,511 INFO L124 PetriNetUnfolderBase]: 8424/12321 cut-off events. [2024-06-28 02:44:43,511 INFO L125 PetriNetUnfolderBase]: For 682070/682107 co-relation queries the response was YES. [2024-06-28 02:44:43,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89466 conditions, 12321 events. 8424/12321 cut-off events. For 682070/682107 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 72845 event pairs, 2609 based on Foata normal form. 35/12352 useless extension candidates. Maximal degree in co-relation 89362. Up to 11321 conditions per place. [2024-06-28 02:44:43,676 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 321 selfloop transitions, 57 changer transitions 0/387 dead transitions. [2024-06-28 02:44:43,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 387 transitions, 5581 flow [2024-06-28 02:44:43,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:44:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:44:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-28 02:44:43,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2024-06-28 02:44:43,677 INFO L175 Difference]: Start difference. First operand has 222 places, 353 transitions, 4544 flow. Second operand 6 states and 189 transitions. [2024-06-28 02:44:43,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 387 transitions, 5581 flow [2024-06-28 02:44:45,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 387 transitions, 5333 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:44:45,285 INFO L231 Difference]: Finished difference. Result has 223 places, 353 transitions, 4426 flow [2024-06-28 02:44:45,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4298, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4426, PETRI_PLACES=223, PETRI_TRANSITIONS=353} [2024-06-28 02:44:45,286 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 169 predicate places. [2024-06-28 02:44:45,286 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 353 transitions, 4426 flow [2024-06-28 02:44:45,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:45,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:45,286 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 02:44:45,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:44:45,286 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:45,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:45,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1479359109, now seen corresponding path program 7 times [2024-06-28 02:44:45,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:45,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627954627] [2024-06-28 02:44:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:45,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:45,473 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 02:44:45,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:45,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627954627] [2024-06-28 02:44:45,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627954627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:45,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:45,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:45,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681549363] [2024-06-28 02:44:45,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:45,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:45,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:45,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:45,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:45,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:44:45,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 353 transitions, 4426 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:45,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:45,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:44:45,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:47,254 INFO L124 PetriNetUnfolderBase]: 7953/11717 cut-off events. [2024-06-28 02:44:47,255 INFO L125 PetriNetUnfolderBase]: For 775205/776485 co-relation queries the response was YES. [2024-06-28 02:44:47,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90142 conditions, 11717 events. 7953/11717 cut-off events. For 775205/776485 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 70685 event pairs, 2276 based on Foata normal form. 97/11446 useless extension candidates. Maximal degree in co-relation 90037. Up to 10522 conditions per place. [2024-06-28 02:44:47,385 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 264 selfloop transitions, 77 changer transitions 0/381 dead transitions. [2024-06-28 02:44:47,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 381 transitions, 5180 flow [2024-06-28 02:44:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:44:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:44:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-28 02:44:47,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2024-06-28 02:44:47,386 INFO L175 Difference]: Start difference. First operand has 223 places, 353 transitions, 4426 flow. Second operand 6 states and 189 transitions. [2024-06-28 02:44:47,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 381 transitions, 5180 flow [2024-06-28 02:44:49,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 381 transitions, 5006 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:44:49,108 INFO L231 Difference]: Finished difference. Result has 224 places, 353 transitions, 4416 flow [2024-06-28 02:44:49,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4252, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4416, PETRI_PLACES=224, PETRI_TRANSITIONS=353} [2024-06-28 02:44:49,108 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-06-28 02:44:49,108 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 353 transitions, 4416 flow [2024-06-28 02:44:49,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:49,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:49,109 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 02:44:49,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:44:49,109 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:49,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:49,109 INFO L85 PathProgramCache]: Analyzing trace with hash -525431883, now seen corresponding path program 5 times [2024-06-28 02:44:49,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:49,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924591211] [2024-06-28 02:44:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:49,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:49,292 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 02:44:49,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924591211] [2024-06-28 02:44:49,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924591211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:49,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:49,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:49,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968611852] [2024-06-28 02:44:49,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:49,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:49,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:49,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:49,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:49,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:44:49,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 353 transitions, 4416 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:49,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:49,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:44:49,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:50,949 INFO L124 PetriNetUnfolderBase]: 8429/12328 cut-off events. [2024-06-28 02:44:50,950 INFO L125 PetriNetUnfolderBase]: For 732957/732994 co-relation queries the response was YES. [2024-06-28 02:44:51,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90330 conditions, 12328 events. 8429/12328 cut-off events. For 732957/732994 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 72924 event pairs, 2608 based on Foata normal form. 35/12359 useless extension candidates. Maximal degree in co-relation 90224. Up to 11324 conditions per place. [2024-06-28 02:44:51,101 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 317 selfloop transitions, 61 changer transitions 0/387 dead transitions. [2024-06-28 02:44:51,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 387 transitions, 5509 flow [2024-06-28 02:44:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:44:51,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:44:51,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-06-28 02:44:51,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6392156862745098 [2024-06-28 02:44:51,102 INFO L175 Difference]: Start difference. First operand has 224 places, 353 transitions, 4416 flow. Second operand 5 states and 163 transitions. [2024-06-28 02:44:51,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 387 transitions, 5509 flow [2024-06-28 02:44:52,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 387 transitions, 5299 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 02:44:52,964 INFO L231 Difference]: Finished difference. Result has 224 places, 358 transitions, 4457 flow [2024-06-28 02:44:52,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4208, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4457, PETRI_PLACES=224, PETRI_TRANSITIONS=358} [2024-06-28 02:44:52,965 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-06-28 02:44:52,965 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 358 transitions, 4457 flow [2024-06-28 02:44:52,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:52,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:52,965 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 02:44:52,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:44:52,965 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:52,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:52,966 INFO L85 PathProgramCache]: Analyzing trace with hash -525432069, now seen corresponding path program 8 times [2024-06-28 02:44:52,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:52,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44665227] [2024-06-28 02:44:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:52,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:44:53,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:53,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44665227] [2024-06-28 02:44:53,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44665227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:53,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:53,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:53,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139003311] [2024-06-28 02:44:53,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:53,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:53,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:53,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:44:53,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 358 transitions, 4457 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:53,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:53,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:44:53,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:54,846 INFO L124 PetriNetUnfolderBase]: 7953/11724 cut-off events. [2024-06-28 02:44:54,846 INFO L125 PetriNetUnfolderBase]: For 829183/830446 co-relation queries the response was YES. [2024-06-28 02:44:54,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91404 conditions, 11724 events. 7953/11724 cut-off events. For 829183/830446 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 70886 event pairs, 2275 based on Foata normal form. 128/11484 useless extension candidates. Maximal degree in co-relation 91297. Up to 10388 conditions per place. [2024-06-28 02:44:55,012 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 256 selfloop transitions, 105 changer transitions 0/402 dead transitions. [2024-06-28 02:44:55,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 402 transitions, 5483 flow [2024-06-28 02:44:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:44:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:44:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-06-28 02:44:55,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6414565826330533 [2024-06-28 02:44:55,013 INFO L175 Difference]: Start difference. First operand has 224 places, 358 transitions, 4457 flow. Second operand 7 states and 229 transitions. [2024-06-28 02:44:55,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 402 transitions, 5483 flow [2024-06-28 02:44:56,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 402 transitions, 5330 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 02:44:56,882 INFO L231 Difference]: Finished difference. Result has 227 places, 358 transitions, 4544 flow [2024-06-28 02:44:56,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4312, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4544, PETRI_PLACES=227, PETRI_TRANSITIONS=358} [2024-06-28 02:44:56,882 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 173 predicate places. [2024-06-28 02:44:56,883 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 358 transitions, 4544 flow [2024-06-28 02:44:56,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:44:56,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:44:56,883 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 02:44:56,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:44:56,883 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:44:56,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:44:56,883 INFO L85 PathProgramCache]: Analyzing trace with hash -525420723, now seen corresponding path program 6 times [2024-06-28 02:44:56,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:44:56,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055654667] [2024-06-28 02:44:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:44:56,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:44:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:44:57,077 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 02:44:57,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:44:57,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055654667] [2024-06-28 02:44:57,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055654667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:44:57,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:44:57,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:44:57,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159338848] [2024-06-28 02:44:57,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:44:57,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:44:57,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:44:57,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:44:57,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:44:57,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:44:57,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 358 transitions, 4544 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:44:57,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:44:57,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:44:57,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:44:58,780 INFO L124 PetriNetUnfolderBase]: 8411/12306 cut-off events. [2024-06-28 02:44:58,781 INFO L125 PetriNetUnfolderBase]: For 728748/728787 co-relation queries the response was YES. [2024-06-28 02:44:58,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90208 conditions, 12306 events. 8411/12306 cut-off events. For 728748/728787 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 72925 event pairs, 2591 based on Foata normal form. 37/12340 useless extension candidates. Maximal degree in co-relation 90102. Up to 11303 conditions per place. [2024-06-28 02:44:58,935 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 319 selfloop transitions, 66 changer transitions 0/394 dead transitions. [2024-06-28 02:44:58,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 394 transitions, 5424 flow [2024-06-28 02:44:58,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:44:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:44:58,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-06-28 02:44:58,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5938375350140056 [2024-06-28 02:44:58,936 INFO L175 Difference]: Start difference. First operand has 227 places, 358 transitions, 4544 flow. Second operand 7 states and 212 transitions. [2024-06-28 02:44:58,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 394 transitions, 5424 flow [2024-06-28 02:45:01,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 394 transitions, 5144 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 02:45:01,076 INFO L231 Difference]: Finished difference. Result has 225 places, 359 transitions, 4423 flow [2024-06-28 02:45:01,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4266, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4423, PETRI_PLACES=225, PETRI_TRANSITIONS=359} [2024-06-28 02:45:01,077 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 171 predicate places. [2024-06-28 02:45:01,077 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 359 transitions, 4423 flow [2024-06-28 02:45:01,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:01,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:01,077 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 02:45:01,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:45:01,077 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:01,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:01,077 INFO L85 PathProgramCache]: Analyzing trace with hash -525426489, now seen corresponding path program 9 times [2024-06-28 02:45:01,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:01,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241373514] [2024-06-28 02:45:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:01,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:01,256 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 02:45:01,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:01,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241373514] [2024-06-28 02:45:01,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241373514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:01,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:01,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:01,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443250734] [2024-06-28 02:45:01,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:01,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:01,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:01,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:01,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:01,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:45:01,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 359 transitions, 4423 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:45:01,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:01,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:45:01,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:02,857 INFO L124 PetriNetUnfolderBase]: 7935/11701 cut-off events. [2024-06-28 02:45:02,857 INFO L125 PetriNetUnfolderBase]: For 763983/765239 co-relation queries the response was YES. [2024-06-28 02:45:02,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89592 conditions, 11701 events. 7935/11701 cut-off events. For 763983/765239 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 70692 event pairs, 2275 based on Foata normal form. 128/11461 useless extension candidates. Maximal degree in co-relation 89487. Up to 10370 conditions per place. [2024-06-28 02:45:03,019 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 247 selfloop transitions, 105 changer transitions 0/394 dead transitions. [2024-06-28 02:45:03,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 394 transitions, 5219 flow [2024-06-28 02:45:03,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:45:03,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:45:03,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-06-28 02:45:03,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-06-28 02:45:03,020 INFO L175 Difference]: Start difference. First operand has 225 places, 359 transitions, 4423 flow. Second operand 6 states and 198 transitions. [2024-06-28 02:45:03,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 394 transitions, 5219 flow [2024-06-28 02:45:04,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 394 transitions, 5042 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 02:45:04,693 INFO L231 Difference]: Finished difference. Result has 225 places, 359 transitions, 4472 flow [2024-06-28 02:45:04,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4246, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4472, PETRI_PLACES=225, PETRI_TRANSITIONS=359} [2024-06-28 02:45:04,693 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 171 predicate places. [2024-06-28 02:45:04,694 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 359 transitions, 4472 flow [2024-06-28 02:45:04,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:45:04,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:04,694 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 02:45:04,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:45:04,694 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:04,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:04,695 INFO L85 PathProgramCache]: Analyzing trace with hash -727576499, now seen corresponding path program 7 times [2024-06-28 02:45:04,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:04,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338610813] [2024-06-28 02:45:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:04,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:04,892 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 02:45:04,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:04,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338610813] [2024-06-28 02:45:04,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338610813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:04,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:04,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:04,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388307704] [2024-06-28 02:45:04,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:04,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:04,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:04,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:04,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:45:04,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 359 transitions, 4472 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:04,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:04,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:45:04,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:06,632 INFO L124 PetriNetUnfolderBase]: 8416/12313 cut-off events. [2024-06-28 02:45:06,632 INFO L125 PetriNetUnfolderBase]: For 698896/698922 co-relation queries the response was YES. [2024-06-28 02:45:06,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89377 conditions, 12313 events. 8416/12313 cut-off events. For 698896/698922 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 72999 event pairs, 2643 based on Foata normal form. 19/12328 useless extension candidates. Maximal degree in co-relation 89272. Up to 11216 conditions per place. [2024-06-28 02:45:06,769 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 292 selfloop transitions, 91 changer transitions 0/392 dead transitions. [2024-06-28 02:45:06,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 392 transitions, 5564 flow [2024-06-28 02:45:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:45:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:45:06,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-06-28 02:45:06,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947712418300654 [2024-06-28 02:45:06,770 INFO L175 Difference]: Start difference. First operand has 225 places, 359 transitions, 4472 flow. Second operand 6 states and 182 transitions. [2024-06-28 02:45:06,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 392 transitions, 5564 flow [2024-06-28 02:45:08,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 392 transitions, 5340 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:45:08,363 INFO L231 Difference]: Finished difference. Result has 226 places, 365 transitions, 4556 flow [2024-06-28 02:45:08,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4252, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4556, PETRI_PLACES=226, PETRI_TRANSITIONS=365} [2024-06-28 02:45:08,364 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-28 02:45:08,364 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 365 transitions, 4556 flow [2024-06-28 02:45:08,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:08,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:08,365 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 02:45:08,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:45:08,365 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:08,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:08,365 INFO L85 PathProgramCache]: Analyzing trace with hash -738538409, now seen corresponding path program 8 times [2024-06-28 02:45:08,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:08,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131935537] [2024-06-28 02:45:08,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:08,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:08,544 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 02:45:08,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:08,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131935537] [2024-06-28 02:45:08,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131935537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:08,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:08,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:08,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788743078] [2024-06-28 02:45:08,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:08,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:08,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:08,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:08,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:08,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:45:08,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 365 transitions, 4556 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:08,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:08,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:45:08,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:10,206 INFO L124 PetriNetUnfolderBase]: 8432/12338 cut-off events. [2024-06-28 02:45:10,206 INFO L125 PetriNetUnfolderBase]: For 697043/697080 co-relation queries the response was YES. [2024-06-28 02:45:10,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89745 conditions, 12338 events. 8432/12338 cut-off events. For 697043/697080 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 73043 event pairs, 2607 based on Foata normal form. 35/12369 useless extension candidates. Maximal degree in co-relation 89639. Up to 11233 conditions per place. [2024-06-28 02:45:10,376 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 300 selfloop transitions, 96 changer transitions 0/405 dead transitions. [2024-06-28 02:45:10,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 405 transitions, 5689 flow [2024-06-28 02:45:10,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:45:10,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:45:10,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-06-28 02:45:10,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-06-28 02:45:10,378 INFO L175 Difference]: Start difference. First operand has 226 places, 365 transitions, 4556 flow. Second operand 6 states and 192 transitions. [2024-06-28 02:45:10,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 405 transitions, 5689 flow [2024-06-28 02:45:12,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 405 transitions, 5552 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-28 02:45:12,431 INFO L231 Difference]: Finished difference. Result has 230 places, 369 transitions, 4690 flow [2024-06-28 02:45:12,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4433, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4690, PETRI_PLACES=230, PETRI_TRANSITIONS=369} [2024-06-28 02:45:12,432 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 176 predicate places. [2024-06-28 02:45:12,432 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 369 transitions, 4690 flow [2024-06-28 02:45:12,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:12,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:12,432 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 02:45:12,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:45:12,432 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:12,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:12,432 INFO L85 PathProgramCache]: Analyzing trace with hash -738301259, now seen corresponding path program 9 times [2024-06-28 02:45:12,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:12,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494787435] [2024-06-28 02:45:12,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:12,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:12,591 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 02:45:12,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:12,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494787435] [2024-06-28 02:45:12,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494787435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:12,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:12,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:12,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499119911] [2024-06-28 02:45:12,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:12,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:12,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:12,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:12,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:12,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:45:12,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 369 transitions, 4690 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:12,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:12,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:45:12,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:14,253 INFO L124 PetriNetUnfolderBase]: 8425/12329 cut-off events. [2024-06-28 02:45:14,253 INFO L125 PetriNetUnfolderBase]: For 723892/723929 co-relation queries the response was YES. [2024-06-28 02:45:14,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90207 conditions, 12329 events. 8425/12329 cut-off events. For 723892/723929 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 72976 event pairs, 2607 based on Foata normal form. 35/12360 useless extension candidates. Maximal degree in co-relation 90099. Up to 11226 conditions per place. [2024-06-28 02:45:14,414 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 295 selfloop transitions, 96 changer transitions 0/400 dead transitions. [2024-06-28 02:45:14,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 400 transitions, 5559 flow [2024-06-28 02:45:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:45:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:45:14,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-06-28 02:45:14,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-06-28 02:45:14,415 INFO L175 Difference]: Start difference. First operand has 230 places, 369 transitions, 4690 flow. Second operand 6 states and 186 transitions. [2024-06-28 02:45:14,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 400 transitions, 5559 flow [2024-06-28 02:45:16,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 400 transitions, 5368 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 02:45:16,213 INFO L231 Difference]: Finished difference. Result has 231 places, 369 transitions, 4705 flow [2024-06-28 02:45:16,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4499, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4705, PETRI_PLACES=231, PETRI_TRANSITIONS=369} [2024-06-28 02:45:16,214 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 177 predicate places. [2024-06-28 02:45:16,214 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 369 transitions, 4705 flow [2024-06-28 02:45:16,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:16,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:16,214 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 02:45:16,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:45:16,214 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:16,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:16,215 INFO L85 PathProgramCache]: Analyzing trace with hash -738538595, now seen corresponding path program 10 times [2024-06-28 02:45:16,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:16,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325912013] [2024-06-28 02:45:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:16,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:16,400 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 02:45:16,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:16,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325912013] [2024-06-28 02:45:16,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325912013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:16,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:16,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:16,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923436784] [2024-06-28 02:45:16,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:16,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:16,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:16,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:16,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:45:16,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 369 transitions, 4705 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:45:16,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:16,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:45:16,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:18,066 INFO L124 PetriNetUnfolderBase]: 7951/11727 cut-off events. [2024-06-28 02:45:18,067 INFO L125 PetriNetUnfolderBase]: For 760410/761666 co-relation queries the response was YES. [2024-06-28 02:45:18,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89787 conditions, 11727 events. 7951/11727 cut-off events. For 760410/761666 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 70823 event pairs, 2274 based on Foata normal form. 151/11510 useless extension candidates. Maximal degree in co-relation 89680. Up to 10289 conditions per place. [2024-06-28 02:45:18,220 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 226 selfloop transitions, 147 changer transitions 0/418 dead transitions. [2024-06-28 02:45:18,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 418 transitions, 5579 flow [2024-06-28 02:45:18,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:45:18,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:45:18,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 257 transitions. [2024-06-28 02:45:18,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6299019607843137 [2024-06-28 02:45:18,221 INFO L175 Difference]: Start difference. First operand has 231 places, 369 transitions, 4705 flow. Second operand 8 states and 257 transitions. [2024-06-28 02:45:18,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 418 transitions, 5579 flow [2024-06-28 02:45:20,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 418 transitions, 5360 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 02:45:20,077 INFO L231 Difference]: Finished difference. Result has 234 places, 369 transitions, 4808 flow [2024-06-28 02:45:20,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4486, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4808, PETRI_PLACES=234, PETRI_TRANSITIONS=369} [2024-06-28 02:45:20,077 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 180 predicate places. [2024-06-28 02:45:20,077 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 369 transitions, 4808 flow [2024-06-28 02:45:20,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:45:20,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:20,078 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 02:45:20,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:45:20,078 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:20,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:20,078 INFO L85 PathProgramCache]: Analyzing trace with hash -738304235, now seen corresponding path program 4 times [2024-06-28 02:45:20,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:20,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236866357] [2024-06-28 02:45:20,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:20,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:20,280 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 02:45:20,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:20,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236866357] [2024-06-28 02:45:20,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236866357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:20,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:20,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:20,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119040725] [2024-06-28 02:45:20,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:20,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:20,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:20,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:20,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:20,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:45:20,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 369 transitions, 4808 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:20,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:20,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:45:20,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:22,130 INFO L124 PetriNetUnfolderBase]: 8512/12465 cut-off events. [2024-06-28 02:45:22,131 INFO L125 PetriNetUnfolderBase]: For 708843/708865 co-relation queries the response was YES. [2024-06-28 02:45:22,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90264 conditions, 12465 events. 8512/12465 cut-off events. For 708843/708865 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 73881 event pairs, 2564 based on Foata normal form. 34/12495 useless extension candidates. Maximal degree in co-relation 90157. Up to 11426 conditions per place. [2024-06-28 02:45:22,268 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 362 selfloop transitions, 35 changer transitions 0/406 dead transitions. [2024-06-28 02:45:22,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 406 transitions, 5743 flow [2024-06-28 02:45:22,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:45:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:45:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-28 02:45:22,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6045751633986928 [2024-06-28 02:45:22,269 INFO L175 Difference]: Start difference. First operand has 234 places, 369 transitions, 4808 flow. Second operand 6 states and 185 transitions. [2024-06-28 02:45:22,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 406 transitions, 5743 flow [2024-06-28 02:45:23,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 406 transitions, 5431 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 02:45:23,738 INFO L231 Difference]: Finished difference. Result has 232 places, 371 transitions, 4608 flow [2024-06-28 02:45:23,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4496, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4608, PETRI_PLACES=232, PETRI_TRANSITIONS=371} [2024-06-28 02:45:23,739 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 178 predicate places. [2024-06-28 02:45:23,739 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 371 transitions, 4608 flow [2024-06-28 02:45:23,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:23,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:23,739 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 02:45:23,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:45:23,739 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:23,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:23,739 INFO L85 PathProgramCache]: Analyzing trace with hash -738630665, now seen corresponding path program 5 times [2024-06-28 02:45:23,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:23,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909419901] [2024-06-28 02:45:23,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:23,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:23,937 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 02:45:23,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:23,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909419901] [2024-06-28 02:45:23,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909419901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:23,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:23,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:23,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314962261] [2024-06-28 02:45:23,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:23,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:23,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:23,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:23,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:45:23,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 371 transitions, 4608 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:23,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:23,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:45:23,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:25,653 INFO L124 PetriNetUnfolderBase]: 8583/12566 cut-off events. [2024-06-28 02:45:25,653 INFO L125 PetriNetUnfolderBase]: For 650917/650939 co-relation queries the response was YES. [2024-06-28 02:45:25,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89405 conditions, 12566 events. 8583/12566 cut-off events. For 650917/650939 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 74574 event pairs, 2086 based on Foata normal form. 30/12592 useless extension candidates. Maximal degree in co-relation 89298. Up to 11091 conditions per place. [2024-06-28 02:45:25,813 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 358 selfloop transitions, 50 changer transitions 0/417 dead transitions. [2024-06-28 02:45:25,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 417 transitions, 5780 flow [2024-06-28 02:45:25,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:45:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:45:25,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-06-28 02:45:25,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.630718954248366 [2024-06-28 02:45:25,815 INFO L175 Difference]: Start difference. First operand has 232 places, 371 transitions, 4608 flow. Second operand 6 states and 193 transitions. [2024-06-28 02:45:25,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 417 transitions, 5780 flow [2024-06-28 02:45:27,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 417 transitions, 5714 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:45:27,150 INFO L231 Difference]: Finished difference. Result has 235 places, 374 transitions, 4722 flow [2024-06-28 02:45:27,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4542, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4722, PETRI_PLACES=235, PETRI_TRANSITIONS=374} [2024-06-28 02:45:27,151 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 181 predicate places. [2024-06-28 02:45:27,151 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 374 transitions, 4722 flow [2024-06-28 02:45:27,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:27,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:27,151 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 02:45:27,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:45:27,152 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:27,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:27,152 INFO L85 PathProgramCache]: Analyzing trace with hash -727579475, now seen corresponding path program 6 times [2024-06-28 02:45:27,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:27,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973747145] [2024-06-28 02:45:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:27,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:27,332 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 02:45:27,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:27,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973747145] [2024-06-28 02:45:27,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973747145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:27,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:27,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:27,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586420140] [2024-06-28 02:45:27,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:27,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:27,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:27,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:27,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:27,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:45:27,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 374 transitions, 4722 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:27,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:27,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:45:27,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:29,017 INFO L124 PetriNetUnfolderBase]: 8539/12503 cut-off events. [2024-06-28 02:45:29,017 INFO L125 PetriNetUnfolderBase]: For 668344/668358 co-relation queries the response was YES. [2024-06-28 02:45:29,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89590 conditions, 12503 events. 8539/12503 cut-off events. For 668344/668358 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 74159 event pairs, 2576 based on Foata normal form. 21/12520 useless extension candidates. Maximal degree in co-relation 89481. Up to 11559 conditions per place. [2024-06-28 02:45:29,186 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 362 selfloop transitions, 33 changer transitions 0/404 dead transitions. [2024-06-28 02:45:29,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 404 transitions, 5631 flow [2024-06-28 02:45:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:45:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:45:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-06-28 02:45:29,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849673202614379 [2024-06-28 02:45:29,187 INFO L175 Difference]: Start difference. First operand has 235 places, 374 transitions, 4722 flow. Second operand 6 states and 179 transitions. [2024-06-28 02:45:29,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 404 transitions, 5631 flow [2024-06-28 02:45:30,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 404 transitions, 5529 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 02:45:30,589 INFO L231 Difference]: Finished difference. Result has 236 places, 375 transitions, 4716 flow [2024-06-28 02:45:30,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4623, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4716, PETRI_PLACES=236, PETRI_TRANSITIONS=375} [2024-06-28 02:45:30,590 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 182 predicate places. [2024-06-28 02:45:30,590 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 375 transitions, 4716 flow [2024-06-28 02:45:30,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:30,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:30,590 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 02:45:30,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:45:30,591 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:30,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:30,591 INFO L85 PathProgramCache]: Analyzing trace with hash -727179761, now seen corresponding path program 1 times [2024-06-28 02:45:30,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:30,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288016389] [2024-06-28 02:45:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:30,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:30,762 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 02:45:30,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:30,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288016389] [2024-06-28 02:45:30,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288016389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:30,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:30,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:30,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512086602] [2024-06-28 02:45:30,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:30,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:30,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:30,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:30,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:30,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2024-06-28 02:45:30,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 375 transitions, 4716 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:30,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:30,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2024-06-28 02:45:30,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:32,438 INFO L124 PetriNetUnfolderBase]: 8507/12459 cut-off events. [2024-06-28 02:45:32,438 INFO L125 PetriNetUnfolderBase]: For 626382/626396 co-relation queries the response was YES. [2024-06-28 02:45:32,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87892 conditions, 12459 events. 8507/12459 cut-off events. For 626382/626396 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 73841 event pairs, 2505 based on Foata normal form. 17/12472 useless extension candidates. Maximal degree in co-relation 87784. Up to 11216 conditions per place. [2024-06-28 02:45:32,592 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 363 selfloop transitions, 41 changer transitions 0/413 dead transitions. [2024-06-28 02:45:32,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 413 transitions, 5685 flow [2024-06-28 02:45:32,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:45:32,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:45:32,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-06-28 02:45:32,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947712418300654 [2024-06-28 02:45:32,593 INFO L175 Difference]: Start difference. First operand has 236 places, 375 transitions, 4716 flow. Second operand 6 states and 182 transitions. [2024-06-28 02:45:32,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 413 transitions, 5685 flow [2024-06-28 02:45:34,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 413 transitions, 5613 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 02:45:34,267 INFO L231 Difference]: Finished difference. Result has 239 places, 380 transitions, 4797 flow [2024-06-28 02:45:34,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4797, PETRI_PLACES=239, PETRI_TRANSITIONS=380} [2024-06-28 02:45:34,269 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 185 predicate places. [2024-06-28 02:45:34,270 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 380 transitions, 4797 flow [2024-06-28 02:45:34,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 02:45:34,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:34,270 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 02:45:34,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:45:34,271 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:34,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:34,271 INFO L85 PathProgramCache]: Analyzing trace with hash -900760962, now seen corresponding path program 1 times [2024-06-28 02:45:34,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:34,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764037298] [2024-06-28 02:45:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:34,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:34,452 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 02:45:34,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:34,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764037298] [2024-06-28 02:45:34,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764037298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:34,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:34,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:45:34,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546468740] [2024-06-28 02:45:34,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:34,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:45:34,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:34,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:45:34,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:45:34,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:45:34,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 380 transitions, 4797 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 02:45:34,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:34,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:45:34,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:36,035 INFO L124 PetriNetUnfolderBase]: 7752/11548 cut-off events. [2024-06-28 02:45:36,035 INFO L125 PetriNetUnfolderBase]: For 693240/693397 co-relation queries the response was YES. [2024-06-28 02:45:36,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86244 conditions, 11548 events. 7752/11548 cut-off events. For 693240/693397 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 70789 event pairs, 2364 based on Foata normal form. 65/11387 useless extension candidates. Maximal degree in co-relation 86134. Up to 10124 conditions per place. [2024-06-28 02:45:36,186 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 294 selfloop transitions, 41 changer transitions 0/395 dead transitions. [2024-06-28 02:45:36,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 395 transitions, 5553 flow [2024-06-28 02:45:36,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:45:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:45:36,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-28 02:45:36,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6225490196078431 [2024-06-28 02:45:36,187 INFO L175 Difference]: Start difference. First operand has 239 places, 380 transitions, 4797 flow. Second operand 4 states and 127 transitions. [2024-06-28 02:45:36,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 395 transitions, 5553 flow [2024-06-28 02:45:37,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 395 transitions, 5503 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 02:45:37,798 INFO L231 Difference]: Finished difference. Result has 241 places, 384 transitions, 4913 flow [2024-06-28 02:45:37,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4747, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4913, PETRI_PLACES=241, PETRI_TRANSITIONS=384} [2024-06-28 02:45:37,799 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 187 predicate places. [2024-06-28 02:45:37,799 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 384 transitions, 4913 flow [2024-06-28 02:45:37,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 02:45:37,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:37,800 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 02:45:37,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:45:37,800 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:37,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:37,800 INFO L85 PathProgramCache]: Analyzing trace with hash 738876346, now seen corresponding path program 2 times [2024-06-28 02:45:37,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:37,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965426443] [2024-06-28 02:45:37,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:37,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:37,944 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 02:45:37,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:37,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965426443] [2024-06-28 02:45:37,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965426443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:37,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:37,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:45:37,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134290707] [2024-06-28 02:45:37,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:37,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:45:37,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:37,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:45:37,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:45:38,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:45:38,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 384 transitions, 4913 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 02:45:38,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:38,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:45:38,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:39,624 INFO L124 PetriNetUnfolderBase]: 7736/11488 cut-off events. [2024-06-28 02:45:39,624 INFO L125 PetriNetUnfolderBase]: For 716309/716466 co-relation queries the response was YES. [2024-06-28 02:45:39,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87873 conditions, 11488 events. 7736/11488 cut-off events. For 716309/716466 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 69996 event pairs, 2364 based on Foata normal form. 65/11327 useless extension candidates. Maximal degree in co-relation 87761. Up to 10096 conditions per place. [2024-06-28 02:45:39,767 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 295 selfloop transitions, 45 changer transitions 0/400 dead transitions. [2024-06-28 02:45:39,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 400 transitions, 5689 flow [2024-06-28 02:45:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:45:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:45:39,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-06-28 02:45:39,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592156862745098 [2024-06-28 02:45:39,769 INFO L175 Difference]: Start difference. First operand has 241 places, 384 transitions, 4913 flow. Second operand 5 states and 151 transitions. [2024-06-28 02:45:39,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 400 transitions, 5689 flow [2024-06-28 02:45:41,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 400 transitions, 5569 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-28 02:45:41,164 INFO L231 Difference]: Finished difference. Result has 244 places, 388 transitions, 4964 flow [2024-06-28 02:45:41,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4799, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4964, PETRI_PLACES=244, PETRI_TRANSITIONS=388} [2024-06-28 02:45:41,165 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 190 predicate places. [2024-06-28 02:45:41,165 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 388 transitions, 4964 flow [2024-06-28 02:45:41,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 02:45:41,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:41,165 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 02:45:41,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:45:41,165 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:41,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:41,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1659691711, now seen corresponding path program 1 times [2024-06-28 02:45:41,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:41,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987069936] [2024-06-28 02:45:41,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:41,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:41,329 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 02:45:41,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:41,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987069936] [2024-06-28 02:45:41,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987069936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:41,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:41,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:41,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622682105] [2024-06-28 02:45:41,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:41,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:41,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:41,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:41,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:41,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:45:41,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 388 transitions, 4964 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:45:41,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:41,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:45:41,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:43,080 INFO L124 PetriNetUnfolderBase]: 8299/12372 cut-off events. [2024-06-28 02:45:43,080 INFO L125 PetriNetUnfolderBase]: For 713728/713734 co-relation queries the response was YES. [2024-06-28 02:45:43,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92844 conditions, 12372 events. 8299/12372 cut-off events. For 713728/713734 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 75510 event pairs, 2377 based on Foata normal form. 30/12397 useless extension candidates. Maximal degree in co-relation 92731. Up to 10750 conditions per place. [2024-06-28 02:45:43,248 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 383 selfloop transitions, 49 changer transitions 0/444 dead transitions. [2024-06-28 02:45:43,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 444 transitions, 6289 flow [2024-06-28 02:45:43,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:45:43,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:45:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-06-28 02:45:43,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-06-28 02:45:43,249 INFO L175 Difference]: Start difference. First operand has 244 places, 388 transitions, 4964 flow. Second operand 7 states and 221 transitions. [2024-06-28 02:45:43,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 444 transitions, 6289 flow [2024-06-28 02:45:45,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 444 transitions, 6156 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 02:45:45,051 INFO L231 Difference]: Finished difference. Result has 250 places, 399 transitions, 5108 flow [2024-06-28 02:45:45,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=4831, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5108, PETRI_PLACES=250, PETRI_TRANSITIONS=399} [2024-06-28 02:45:45,051 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 196 predicate places. [2024-06-28 02:45:45,052 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 399 transitions, 5108 flow [2024-06-28 02:45:45,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:45:45,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:45,052 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 02:45:45,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:45:45,052 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:45,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:45,052 INFO L85 PathProgramCache]: Analyzing trace with hash -930269383, now seen corresponding path program 2 times [2024-06-28 02:45:45,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:45,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582441748] [2024-06-28 02:45:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:45,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:45,229 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 02:45:45,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:45,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582441748] [2024-06-28 02:45:45,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582441748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:45,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:45,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:45,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580793749] [2024-06-28 02:45:45,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:45,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:45,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:45,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:45,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:45,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:45:45,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 399 transitions, 5108 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:45:45,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:45,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:45:45,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:47,040 INFO L124 PetriNetUnfolderBase]: 8455/12628 cut-off events. [2024-06-28 02:45:47,040 INFO L125 PetriNetUnfolderBase]: For 757393/757399 co-relation queries the response was YES. [2024-06-28 02:45:47,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96027 conditions, 12628 events. 8455/12628 cut-off events. For 757393/757399 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 77605 event pairs, 2617 based on Foata normal form. 38/12661 useless extension candidates. Maximal degree in co-relation 95911. Up to 11454 conditions per place. [2024-06-28 02:45:47,210 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 381 selfloop transitions, 42 changer transitions 0/435 dead transitions. [2024-06-28 02:45:47,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 435 transitions, 6102 flow [2024-06-28 02:45:47,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:45:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:45:47,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-06-28 02:45:47,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5966386554621849 [2024-06-28 02:45:47,211 INFO L175 Difference]: Start difference. First operand has 250 places, 399 transitions, 5108 flow. Second operand 7 states and 213 transitions. [2024-06-28 02:45:47,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 435 transitions, 6102 flow [2024-06-28 02:45:48,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 435 transitions, 6017 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-28 02:45:48,711 INFO L231 Difference]: Finished difference. Result has 255 places, 401 transitions, 5161 flow [2024-06-28 02:45:48,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=5025, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5161, PETRI_PLACES=255, PETRI_TRANSITIONS=401} [2024-06-28 02:45:48,712 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 201 predicate places. [2024-06-28 02:45:48,712 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 401 transitions, 5161 flow [2024-06-28 02:45:48,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:45:48,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:48,712 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 02:45:48,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:45:48,713 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:48,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:48,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1017109063, now seen corresponding path program 3 times [2024-06-28 02:45:48,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:48,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080954070] [2024-06-28 02:45:48,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:48,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:48,912 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 02:45:48,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:48,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080954070] [2024-06-28 02:45:48,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080954070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:48,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:48,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:48,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121755478] [2024-06-28 02:45:48,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:48,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:48,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:48,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:48,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:48,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:45:48,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 401 transitions, 5161 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:45:48,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:48,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:45:48,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:50,792 INFO L124 PetriNetUnfolderBase]: 8567/12800 cut-off events. [2024-06-28 02:45:50,792 INFO L125 PetriNetUnfolderBase]: For 779786/779792 co-relation queries the response was YES. [2024-06-28 02:45:50,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97687 conditions, 12800 events. 8567/12800 cut-off events. For 779786/779792 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 78932 event pairs, 2603 based on Foata normal form. 30/12825 useless extension candidates. Maximal degree in co-relation 97569. Up to 11452 conditions per place. [2024-06-28 02:45:50,976 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 384 selfloop transitions, 46 changer transitions 0/442 dead transitions. [2024-06-28 02:45:50,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 442 transitions, 6207 flow [2024-06-28 02:45:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:45:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:45:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-06-28 02:45:50,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6050420168067226 [2024-06-28 02:45:50,978 INFO L175 Difference]: Start difference. First operand has 255 places, 401 transitions, 5161 flow. Second operand 7 states and 216 transitions. [2024-06-28 02:45:50,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 442 transitions, 6207 flow [2024-06-28 02:45:52,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 442 transitions, 6107 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 02:45:52,393 INFO L231 Difference]: Finished difference. Result has 258 places, 405 transitions, 5240 flow [2024-06-28 02:45:52,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=5061, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5240, PETRI_PLACES=258, PETRI_TRANSITIONS=405} [2024-06-28 02:45:52,400 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 204 predicate places. [2024-06-28 02:45:52,401 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 405 transitions, 5240 flow [2024-06-28 02:45:52,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:45:52,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:52,401 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 02:45:52,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:45:52,401 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:52,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:52,402 INFO L85 PathProgramCache]: Analyzing trace with hash -53569275, now seen corresponding path program 4 times [2024-06-28 02:45:52,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:52,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832628455] [2024-06-28 02:45:52,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:52,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:52,580 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 02:45:52,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:52,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832628455] [2024-06-28 02:45:52,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832628455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:52,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:52,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:52,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543844339] [2024-06-28 02:45:52,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:52,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:52,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:52,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:52,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:52,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:45:52,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 405 transitions, 5240 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:45:52,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:52,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:45:52,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:54,689 INFO L124 PetriNetUnfolderBase]: 8725/13040 cut-off events. [2024-06-28 02:45:54,689 INFO L125 PetriNetUnfolderBase]: For 822064/822072 co-relation queries the response was YES. [2024-06-28 02:45:54,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99901 conditions, 13040 events. 8725/13040 cut-off events. For 822064/822072 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 80666 event pairs, 2645 based on Foata normal form. 40/13077 useless extension candidates. Maximal degree in co-relation 99781. Up to 11898 conditions per place. [2024-06-28 02:45:54,864 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 394 selfloop transitions, 39 changer transitions 0/445 dead transitions. [2024-06-28 02:45:54,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 445 transitions, 6270 flow [2024-06-28 02:45:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:45:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:45:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 238 transitions. [2024-06-28 02:45:54,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 02:45:54,865 INFO L175 Difference]: Start difference. First operand has 258 places, 405 transitions, 5240 flow. Second operand 8 states and 238 transitions. [2024-06-28 02:45:54,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 445 transitions, 6270 flow [2024-06-28 02:45:56,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 445 transitions, 6195 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 02:45:56,490 INFO L231 Difference]: Finished difference. Result has 263 places, 407 transitions, 5303 flow [2024-06-28 02:45:56,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=5165, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5303, PETRI_PLACES=263, PETRI_TRANSITIONS=407} [2024-06-28 02:45:56,491 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 209 predicate places. [2024-06-28 02:45:56,491 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 407 transitions, 5303 flow [2024-06-28 02:45:56,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:45:56,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:56,491 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 02:45:56,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:45:56,491 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:45:56,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:56,492 INFO L85 PathProgramCache]: Analyzing trace with hash -58931655, now seen corresponding path program 5 times [2024-06-28 02:45:56,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:56,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197448943] [2024-06-28 02:45:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:56,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:56,677 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 02:45:56,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:56,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197448943] [2024-06-28 02:45:56,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197448943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:56,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:56,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:45:56,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197963584] [2024-06-28 02:45:56,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:56,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:45:56,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:56,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:45:56,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:45:56,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:45:56,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 407 transitions, 5303 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:45:56,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:56,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:45:56,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:58,686 INFO L124 PetriNetUnfolderBase]: 8815/13200 cut-off events. [2024-06-28 02:45:58,686 INFO L125 PetriNetUnfolderBase]: For 845136/845142 co-relation queries the response was YES. [2024-06-28 02:45:58,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101165 conditions, 13200 events. 8815/13200 cut-off events. For 845136/845142 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 81999 event pairs, 2687 based on Foata normal form. 38/13233 useless extension candidates. Maximal degree in co-relation 101043. Up to 12042 conditions per place. [2024-06-28 02:45:58,873 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 392 selfloop transitions, 35 changer transitions 0/439 dead transitions. [2024-06-28 02:45:58,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 439 transitions, 6305 flow [2024-06-28 02:45:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:45:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:45:58,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-28 02:45:58,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-28 02:45:58,874 INFO L175 Difference]: Start difference. First operand has 263 places, 407 transitions, 5303 flow. Second operand 6 states and 187 transitions. [2024-06-28 02:45:58,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 439 transitions, 6305 flow [2024-06-28 02:46:00,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 439 transitions, 6205 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:46:00,560 INFO L231 Difference]: Finished difference. Result has 263 places, 409 transitions, 5337 flow [2024-06-28 02:46:00,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=5203, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5337, PETRI_PLACES=263, PETRI_TRANSITIONS=409} [2024-06-28 02:46:00,561 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 209 predicate places. [2024-06-28 02:46:00,561 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 409 transitions, 5337 flow [2024-06-28 02:46:00,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:46:00,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:46:00,561 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 02:46:00,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:46:00,561 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:46:00,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:46:00,561 INFO L85 PathProgramCache]: Analyzing trace with hash -59079525, now seen corresponding path program 6 times [2024-06-28 02:46:00,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:46:00,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771993720] [2024-06-28 02:46:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:46:00,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:46:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:46:00,734 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 02:46:00,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:46:00,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771993720] [2024-06-28 02:46:00,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771993720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:46:00,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:46:00,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:46:00,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351435850] [2024-06-28 02:46:00,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:46:00,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:46:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:46:00,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:46:00,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:46:00,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:46:00,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 409 transitions, 5337 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:46:00,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:46:00,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:46:00,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:46:02,726 INFO L124 PetriNetUnfolderBase]: 8763/13124 cut-off events. [2024-06-28 02:46:02,726 INFO L125 PetriNetUnfolderBase]: For 832109/832115 co-relation queries the response was YES. [2024-06-28 02:46:02,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99756 conditions, 13124 events. 8763/13124 cut-off events. For 832109/832115 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 81405 event pairs, 2439 based on Foata normal form. 30/13149 useless extension candidates. Maximal degree in co-relation 99633. Up to 11548 conditions per place. [2024-06-28 02:46:02,910 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 392 selfloop transitions, 43 changer transitions 0/447 dead transitions. [2024-06-28 02:46:02,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 447 transitions, 6353 flow [2024-06-28 02:46:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:46:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:46:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-06-28 02:46:02,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.630718954248366 [2024-06-28 02:46:02,911 INFO L175 Difference]: Start difference. First operand has 263 places, 409 transitions, 5337 flow. Second operand 6 states and 193 transitions. [2024-06-28 02:46:02,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 447 transitions, 6353 flow [2024-06-28 02:46:04,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 447 transitions, 6241 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 02:46:04,530 INFO L231 Difference]: Finished difference. Result has 266 places, 411 transitions, 5363 flow [2024-06-28 02:46:04,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=5229, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5363, PETRI_PLACES=266, PETRI_TRANSITIONS=411} [2024-06-28 02:46:04,531 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 212 predicate places. [2024-06-28 02:46:04,531 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 411 transitions, 5363 flow [2024-06-28 02:46:04,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:46:04,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:46:04,531 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 02:46:04,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:46:04,531 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:46:04,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:46:04,531 INFO L85 PathProgramCache]: Analyzing trace with hash -53354073, now seen corresponding path program 1 times [2024-06-28 02:46:04,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:46:04,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223992702] [2024-06-28 02:46:04,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:46:04,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:46:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:46:04,700 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 02:46:04,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:46:04,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223992702] [2024-06-28 02:46:04,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223992702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:46:04,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:46:04,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:46:04,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427461386] [2024-06-28 02:46:04,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:46:04,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:46:04,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:46:04,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:46:04,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:46:04,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-06-28 02:46:04,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 411 transitions, 5363 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:46:04,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:46:04,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-06-28 02:46:04,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:46:06,752 INFO L124 PetriNetUnfolderBase]: 8713/13044 cut-off events. [2024-06-28 02:46:06,752 INFO L125 PetriNetUnfolderBase]: For 824867/824875 co-relation queries the response was YES. [2024-06-28 02:46:06,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98460 conditions, 13044 events. 8713/13044 cut-off events. For 824867/824875 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 80694 event pairs, 2522 based on Foata normal form. 32/13073 useless extension candidates. Maximal degree in co-relation 98335. Up to 11476 conditions per place. [2024-06-28 02:46:06,943 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 394 selfloop transitions, 48 changer transitions 0/454 dead transitions. [2024-06-28 02:46:06,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 454 transitions, 6419 flow [2024-06-28 02:46:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:46:06,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:46:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 241 transitions. [2024-06-28 02:46:06,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5906862745098039 [2024-06-28 02:46:06,945 INFO L175 Difference]: Start difference. First operand has 266 places, 411 transitions, 5363 flow. Second operand 8 states and 241 transitions. [2024-06-28 02:46:06,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 454 transitions, 6419 flow [2024-06-28 02:46:08,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 454 transitions, 6260 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 02:46:08,452 INFO L231 Difference]: Finished difference. Result has 269 places, 413 transitions, 5351 flow [2024-06-28 02:46:08,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=5204, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5351, PETRI_PLACES=269, PETRI_TRANSITIONS=413} [2024-06-28 02:46:08,453 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 215 predicate places. [2024-06-28 02:46:08,453 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 413 transitions, 5351 flow [2024-06-28 02:46:08,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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 02:46:08,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:46:08,453 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 02:46:08,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:46:08,453 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:46:08,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:46:08,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1085796766, now seen corresponding path program 1 times [2024-06-28 02:46:08,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:46:08,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101008441] [2024-06-28 02:46:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:46:08,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:46:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:46:08,622 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 02:46:08,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:46:08,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101008441] [2024-06-28 02:46:08,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101008441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:46:08,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:46:08,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:46:08,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618197569] [2024-06-28 02:46:08,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:46:08,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:46:08,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:46:08,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:46:08,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:46:08,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-06-28 02:46:08,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 413 transitions, 5351 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 02:46:08,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:46:08,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-06-28 02:46:08,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand